all | frequencies |
|
|
exhibits | applications |
---|---|---|---|---|---|
manuals |
app s | submitted / available | |||||||
---|---|---|---|---|---|---|---|---|
1 |
|
manual | Users Manual | 752.12 KiB | August 01 2001 | |||
1 |
|
page 34 has revised warning statement in manual | Users Manual | 828.48 KiB | ||||
1 | External Photos | native | August 01 2001 | |||||
1 | External Photos | native | August 01 2001 | |||||
1 | Internal Photos | native | August 01 2001 | |||||
1 | Test Report | August 01 2001 | ||||||
1 | Cover Letter(s) | |||||||
1 | External Photos | native | August 01 2001 | |||||
1 | External Photos | native | August 01 2001 | |||||
1 | RF Exposure Info | |||||||
1 | Test Report | August 01 2001 | ||||||
1 | Cover Letter(s) | August 01 2001 | ||||||
1 | Test Report | |||||||
1 | External Photos | native | August 01 2001 | |||||
1 | Cover Letter(s) | August 01 2001 | ||||||
1 | Internal Photos | native | August 01 2001 | |||||
1 | External Photos | native | August 01 2001 | |||||
1 | Internal Photos | native | August 01 2001 | |||||
1 | Internal Photos | native | August 01 2001 | |||||
1 | ID Label/Location Info | August 01 2001 | ||||||
1 | ID Label/Location Info | native | August 01 2001 | |||||
1 | Internal Photos | native | August 01 2001 |
1 | manual | Users Manual | 752.12 KiB | August 01 2001 |
QTM-8524 2.4 GHz RF Radio Modem Module Users Manual WIRELESS MODEM MODULE FOR QTM-8000 SERIES SYSTEMS QUATECH, Inc. 662 Wolf Ledges Pkwy Akron, Ohio 44311
(330) 434-3154
(330) 434-1409 TEL:
FAX:
http://www.quatech.com QTM-8524 Users Manual Revision 1.0 PN Warranty Information Quatech Inc. warrants the QTM-8524 to be free of defects for one
(1) year from the date of purchase. Quatech Inc. will repair or replace any system component that fails to perform under normal operating conditions in accordance with the procedures outlined in this document, provided the failure occurs during the one year warranty period. Any damage resulting from improper installation, operation or general misuse voids all warranty rights. No representation is made regarding the suitability of this product for any particular purpose. Please complete the following information and retain for your records. Date of Purchase:
Model Number:
QTM-8524 Product:
2.4 GHz RF Radio Modem_ Serial Number:
All products returned to Quatech for either warranty or non-
warranty repair MUST be assigned a Returned Material Authorization (RMA) number prior to shipment. This RMA number must be clearly marked on the exterior of the products return packaging and in any correspondence to ensure proper routing and prompt attention. To obtain an RMA number, contact the Quatech Technical Support Department at 1-800-553-1170 or
(330) 434-3154. In order to prevent damage to returned merchandise during shipment, please package electronic components in anti-static/shock proof materials. For warranty repair/returns, please have the following information available when contacting the Technical Support department:
1. Model number and serial number of the product under warranty, 2. Repair instructions and/or specific description of the problem. For non-warranty repairs or upgrades, contact the Technical Support department for current repair charges and please have the following information available:
1. Purchase order number to cover the cost of the service, 2. Model number and serial number of the product, 3. Repair or upgrade instructions relative to the product. Notice The information contained in this document cannot be reproduced in any form without the written consent of Quatech Inc. Any software programs accompanying this document can be used only in accordance with any licensing agreement(s) between the purchaser and Quatech Inc. Quatech Inc. reserves the right to change this documentation or the product to which it refers at any time and without notice. The authors have taken due care in the preparation of this document and any associated software program(s). Every attempt has been made to ensure accuracy and completeness. Under no circumstances will Quatech Inc. be liable for damages of any kind, incidental or consequential, in regard to or arising from the performance or form of the materials presented herein or in any software program(s) that may accompany this document. Quatech Inc. encourages and appreciates feedback concerning this document. Please send any written comments to the Technical Support Department at the address listed on the cover of this manual. Table of Contents 1. Introduction 1.1 Available QTM-8000 Series Modules 1.2 QTM-8000 Series Common Features 1.3 QTM-8000 Series Wireless Networks 1.3.1 Disadvantages of Conventional Two-Wire RS-485 Networks 1.3.2 The QTM-8000 Series Network Advantage 1.3.3 Operation Principle 1.3.4 Supporting Multiple Baud Rates 1.4 QTM-8000 Series Module dimensions 2. QTM-8524 Specifications 2.1 Pin Assignments 2.2 QTM-8524 Module Specifications 2.3 QTM-8524 Block Diagram 2.4 QTM-8524 Disassembly 2.5 QTM-8524 Jumper Settings 2.6 QTM-8524 Basic Wire Connections 2.6.1 RS-232 Connection Between PC and QTM-8524 2.6.2 Connecting QTM-8000 Modules to the QTM-8524 3. Antennas 3.1 QTM-8524 Antenna Options 3.1.1 QTM-24ANT-SW Specifications 3.1.2 QTM-24ANT-C Specifications 3.2 Connecting Antennas to QTM-8524 Modules 3.2.1 Site Selection 3.2.2 Installation 3.2.3 Connection 3.3 Mounting External Antennas 3.3.1 Mounting the QTM-24ANT-SW 3.3.2 Mounting the QTM-24ANT-C 3.3.3 RF Safety 9 10 11 12 13 14 15 16 17 20 20 21 22 22 24 26 26 26 27 27 27 28 29 29 29 29 30 30 32 34 4. Configuration 4.1 RS-232 or RS-485 Configuration 4.2 Half-Duplex and Full-Duplex Operation 4.3 Synchronous and Asynchronous Communication 4.4 Configuration Modes 4.4.1 Mode 1: Full-Duplex, Synchronous 4.4.2 Mode 2: Half-Duplex, Synchronous 4.4.3 Mode 3: Full-Duplex, Asynchronous 5. Application Examples 5.1 Peer-to-Peer Communication (Mode 1) 5.2 Interfacing with QTM-8000 Modules (Mode 1) 5.3 Multiple PC Communication (Mode 2) 5.4 Asynchronous Communication (Mode 3) 6. Approvals 34 34 34 35 36 37 38 39 40 40 41 42 43 44 List of Figures 1.3 QTM-8000 Series Network with Multiple Baud Rates and Multiple Data Formats QTM-8000 Series Front, Side, Rear and Top Views QTM-8000 Series DIN Rail Mounting QTM-8000 Series Panel Mounting QTM-8524 Block Diagram Disassembling the QTM-8524 QTM-8524 Jumper Settings Connecting QTM-8524 to DB-9 Serial Cable Connecting QTM-8524 to QTM-8000 I/O Modules QTM-24ANT-SW Transmission Pattern 1.3.2.1 Single Baud Rate QTM-8000 Wireless Network 1.3.2.2 Multi-Baud Rate Wireless QTM-8000 Network 1.4.1 1.4.2 1.4.3 2.3 2.4 2.5 2.5.1 2.5.2 3.1.1 3..1.2 QTM-24ANT-C Transmission Pattern 3.3.1.1 Mounting the QTM-24ANT-SW Steps 1-6 3.3.1.2 Mounting the QTM-24ANT-SW Step 7 3.3.2.1 3.3.2.2 Connecting the QTM-24ANT-C Antenna to the Bracket 5.1 5.2 5.3 5.4 QTM-8524 Peer-to-Peer Communication QTM-8524 as part of a QTM-8000 Series I/O Network QTM-8524 Modules Used to Network Multiple PCs QTM-8524 Modules in an Asynchronous Network Installing the QTM-24ANT-C Ceiling Mount Bracket 12 13 14 17 18 19 22 23 25 26 26 27 28 30 31 33 33 40 41 42 43 1. Introduction The QTM-8000 Series of modules is comprised of analog and digital I/O modules designed for a wide variety of data ac-
quisition and signal conditioning functions. These modules are designed for an RS-485 communication network, and re-
quire an RS-485 to RS-232 converter in order to be accessed through a standard PC serial port. The QTM-8520/8520R module performs this function. Unlike many other convert-
ers, the versatile QTM-8520 contains a unique self-tuner ASIC that allows it to process signals from multiple serial devices operating at different baud rates and using different data for-
mats. This flexibility makes a QTM-8000 Series network an extremely cost effective solution for remote signal monitoring and control. The QTM-8524 is a radio modem module that can implement QTM-8000 Series modules as a wireless data acquisition and signal conditioning network. The wireless communication modules form RF communication between peer-to-peer or multi-point structures, which eliminates the use of long cables. Like the QTM-8520, the QTM-8524 functions as a RS-485 to RS-232 converter. However, it does not contain the self-tuner ASIC which means that all modules operating in a QTM-8524 wireless network must be functioning at the same baud rate and using the same data format. To implement a wireless net-
work functioning at several different baud rates, a QTM-8520 module must be used in conjunction with multiple pairs of QTM-8524 modules. Quatech QTM-8524 Manual 9 1.1 Available QTM-8000 Series Modules Wireless Radio Modem Modules:
QTM-8524:
2.4 GHz RF to RS-232 or RS-485 converter Bus Conversion and Repeater Modules:
QTM-8520:
RS-232 to RS-485 converter with 3000V isolation QTM-8520R: RS-232 to RS-485 converter with 3000V isolation QTM-8510:
RS-485 to RS-485 repeater with 3000V isolation Digital I/O Modules:
QTM-8050:
QTM-8052:
QTM-8060:
7 digital input s, 8 TTL compatible digital outputs 8 isolated digital input channels 4 isolated digital inputs, 4 digital relay outputs Analog Output Modules:
QTM-8021:
Single channel analog (current or voltage) output Analog Input Modules:
QTM-8013D: Single channel RTD analog input QTM-8014D:
1 analog input, 1 digital input, 2 digital outputs, with LED display. QTM-8017:
QTM-8018:
8 channel analog input module 8 channel thermocouple input module Timer/Counter Modules:
QTM-8080D:
2 independent 32-bit counters, 2 digital output channels 5 Hz to 50kHz frequency measurement range 10 Quatech QTM-8524 Manual 1.2 QTM-8000 Series Common Features Communication :
m Asynchronous half-duplex 2-wire RS-485 network m Maximum network distance without repeater=4000 feet (1.2Km) m Baud Rates: 600,1200,2400,4800,9600,19200,38400,57600 (bps) m A single network can accommodate multiple devices with different baud rates and data formats m QTM-8000 series data format=
1 start + 8 data + 1 stop + no parity = 10-bit m Two extra checksum bytes can be enabled or disabled m Built-in transient voltage suppressor and PTC protector m ASCII command/response protocol m Plug-in screw terminal block Power :
m +10V ~ +30V DC m Power reverse protection, over-voltage brown-out protection System :
m Internal Dual watchdog, power-on start value and safe value for host failure m Operating temperature : -10 to 70C (14 to 185F) m Storage temperature : -25 to 80C (-13 to 185F) m Humidity : 5 to 95%, non-condensing m Isolation voltage : 3000 VDC Quatech QTM-8524 Manual 11 1.3 QTM-8000 Series Wireless Networks Figure 1.3--QTM-8000 Series Network with multiple baud rates and multiple data formats 12 Quatech QTM-8524 Manual 1.3.1 Disadvantages of Conventional Two-Wire RS-485 Networks:
In a standard RS-485 network, a converter is used to adapt the host PCs single wire RS-232 signal to the two-wire RS-485 signal required by the network. However, when using a standard converter, not only must the baud rate and data format for all signals remain fixed, but they must be identical for all incoming signals. This can pose a problem if multiple types of devices are to be used in a single system, such as a QTM module operating at 115200 bps with a 10-bit per channel data format, and a standard PLC operating at 9600 bps with an 11-bit data format. One solution to this problem is to use two independent two-wire RS-485 networks to accommo-
date both devices. However, this can increase overall system cost and de-
crease system reliability. If devices are capable of operating at different baud rates, but share a single data format, a single standard two-wire RS-485 network can be used, provided that all devices are set to use the lowest common baud rate. While this solution may save on system cost, it is at the expense of performance. 1.3.2 The QTM-8000 Series Network Advantage:
The most desirable system is one in which a single RS-485 network can be used to link devices operating at multiple baud rates with different data formats. The QTM-8000 Series can do just that. Using the QTM-8520 con-
verter module to auto-tune the network, up to 256 devices operating between 1200 and 115200 bps can be controlled via a single standard RS-232 serial port. (Using a QTM-8510 repeater expands the network to 2, 048 devices.) For wireless networks, the QTM-8524 can convert and control the RS-485 network. However, a single baud rate, channel, and frequency must be jumper selected for each module pair. This means that if a QTM-8524 is connected directly to the computers serial port, the network can only function at a single baud rate. To support multiple baud rates in a QTM-8000 wireless network, the QTM-8520 must be used in conjunction with a pair of QTM-
8524 RF modules for each desired baud rate. (See figures 1.3.2.1 & 1.3.2.2) Baud Rate=19.2 kbps Figure 1.3.2.1--QTM-8000 Series Network using a single pair of QTM-8524 modules as an interface to the PC. Quatech QTM-8524 Manual 13 m o d u l e i n c o n j u n c t i o n w i t h m u l t i p l e p a i r s o f F i g u r e 1 3
. 2 2
U s i n g a Q T M
8 5 2 0 c o n v e r t e r i n a w i r e l e s s Q T M
8 0 0 0 S e r i e s n e t w o r k Q T M
8 5 2 4 m o d u l e s t o s u p p o r t m u l t i p l e b a u d r a t e s 14 Quatech QTM-8524 Manual 1.3.3 Operation Principle (Refer to Figure 1.3.2.1 & 1.3.2.2):
(1) The Host PC sends out a command via COM1.
(2) The QTM-8520 or upstream QTM-8524 converts the RS-232 signal into a RS-485 signal or a RF signal respectively.
(3) All modules connected to the RS-485 network will simultaneously receive this command. Each module in the network will extract the destination address field and compare this value to its local module address. The receiving wireless module first converts the RF signal to RS-485, then sends the command to the downstream modules.
(4) The module to which the command was addressed will execute it, and the other modules will ignore the command.
(5) After executing the command, the addressed module sends a response back to the host PC over the RS-485 or RS-485/RF network.
(6) The QTM-8520 or upstream QTM-8524 module processes the response and converts it from RF/RS-485 to RS-232 for use by the Host PC
(7) Host PC will interpret this result and take appropriate action. Quatech QTM-8524 Manual 15 1.3.4 Supporting Multiple Baud Rates As noted earlier, QTM-8000 Series networks support devices operating at different baud rates. For example, in Figure 1.3 the diagram depicts a wire-
less modem operating at 19200 bps, QTM-8000 Series modules operating at 2400 bps and a PLC operating at 9600 bps. The QTM-8520 converter module can automatically switch to any baud rate in the 1200 bps to 115,200 bps range. In order to support multiple baud rates in a wireless network, the QTM-8520 must be used to auto tune the network and pairs of QTM-8524 RF modules are jumper configured to match the specific baud rate at which downstream modules are operating. When the host PC sends commands it tailors them to the baud rate at which the target module is operating. The QTM-8520 drives the signal from RS-232 to RS-485 at that given baud rate. The QTM-
8524 that is configured for that same baud rate receives the RS-485 com-
mands and converts them to RF. Any other QTM-8524 set for a different baud rate will ignore the command. The RF signal is transmitted along a set channel as selected on the QTM-8524. The downstream QTM-8524 that is configured for that same channel receives the RF signal and converts the commands to RS-485. These commands are then distributed to all the mod-
ules downstream from the receiving QTM-8524. Each module at the target baud rate will determine whether the command is addressed to it (see step 3 in section 1.3.3) and react appropriately. 16 Quatech QTM-8524 Manual 1.4 QTM-8000 Series Module Dimensions FRONT VIEW SIDE VIEW Figure 1.4.1--QTM-8000 Series Front, Side, Rear, and Top Views Quatech QTM-8524 Manual 17 Figure 1.4.2--QTM-8000 Series Din Rail Mounting 18 Quatech QTM-8524 Manual Plastic Part for Panel Mount Figure 1.4.3--QTM-8000 Series Panel Mounting Quatech QTM-8524 Manual 19 2. QTM-8524 Specifications 2.1 Pin Assignments 0 2 1 1 QTM-8524 Wireless RF Modem Frequency Range: 2.4 GHz Channel Spacing: 2 MHz RF Power Output: 0.707W Interface: RS-232/RS-485 1 0 1
(RS-485) DSR RX TX
(R)+Vs
(G)D-
(Y)D+
Computer GND Power GND 20 Quatech QTM-8524 Manual 2.2 QTM-8524 Module Specifications QTM-8524: 2.4 GHz RS-232/RS-485 to RF Converter RF Communication Transceiver Frequency Band: 2426 to 2458 MHz Channel Spacing: 2.048 MHz (8 Channels jumper select) Peak Output Power: 28.5 dBm 2 dB (.707 watts) Modulation: Gaussian Minimum Shift Keying (GMSK) Time Division Duplexing Transmission Range:
RS-232 Line of Sight: .35 miles Semi-Open: 150 ft. Direct Sequence Spread Spectrum Non-Overlapping Channels: 8 Channels, Jumper selectable
(Full-Duplex Mode Only) Modes of Operation: Full Duplex or Half Duplex, Jumper selectable Communication: Asynchronous or Synchronous, Jumper selectable Serial Communication Interface RS-232 (TxD, RxD, GND) or RS-485 (D+, D-), Jumper selectable Baud Rate: 600 bps to 57.6 kbps, Jumper selectable Environments Operating Temperature: 0 C to 50 C Storage Temperature: -30 C to 70 C Power Supply Vs: +10V to +30V DC Unregulated Power Consumption: 1.5W Note: The QTM-8524 must operate in full-duplex, synchronous mode in order to be used with QTM-8000 Series data acquisition and signal conditioning modules. Quatech QTM-8524 Manual 21 2.3 QTM-8524 Block Diagram TX RX D+
D-
RS-232 Interface RS-485 Interface Transceiver Embedded Controller GMSK RF Module antenna
+Vs GND Power Regulator
+5V QTM-8524 Figure 2.3--QTM-8524 Block Diagram 2.4 QTM-8524 Disassembly Disassembly of the QTM-8524 is required to change the jumper settings. Please refer to figure 2.4 and follow the steps below to disassemble the module:
1. Remove the DIN rail mounting bracket by loosening the screws on the front of the unit. 2. Remove the two (2) small screws that were under the DIN rail mounting bracket. 3. Using a small flat bladed screwdriver, gently pry at the corners to separate the plastic case. 4. Set the jumpers as desired and replace the radio assembly in the case. Use care not to flex the cable too much while setting the jumpers. 22 Quatech QTM-8524 Manual 5. Snap the case back together firmly. 6. Insert the two (2) small screws in the back of the unit. 7. Place the DIN rail bracket back (notice locating pins on the bottom of the bracket) and secure tightly. Remove for disassembly Remove for disassembly REAR VIEW Figure 2.4--Disassembling the QTM-8524 Quatech QTM-8524 Manual 23 2.5 QTM-8524 Jumper Settings Factory default jumper settings are indicated below. Baudrate (bps) = 9600 bps Slave Mode Channel 3 RS-232 Interface Frequency Channel = 2439.936 MHz Full Duplex Mode Synchronous Communication Figure 2.5 on the following page diagrams the other possible jumper set-
tings. See section 4 for more information about how QTM-8524 modules should be configured for different types of QTM-8000 wireless networks. Note that the QTM-8524 must be disassambled before jumper settings can be changed. See section 2.4 for disassembly instructions. 24 Quatech QTM-8524 Manual
(1) Channel Select
(2) Frequency Select
(3) Baud Rate Select Channel0 Channel1 Channel2 Channel3 Channel4 Channel5 Channel6 Channel7 2426.112 MHz 2430.720 MHz 2435.328 MHz 2439.936 MHz 2444.544 MHz 2449.152 MHz 2453.760 MHz 2458.368MHz 600 bps 1200 bps 2400 bps 4800 bps 9600 bps 19200 bps 38400 bps 57600 bps QTM-8524
(4)
(5)
(6) Full-Duplex Half-Duplex Slave Master Synchronous Asynchronous
(7) RS-232 RS-485 Figure 2.5.--QTM-8524 Jumper Settings Quatech QTM-8524 Manual 25 2.6 QTM-8524 Basic Wire Connections 2.6.1 RS-232 connection between PC and QTM-8524 The QTM-8524 includes a cable that will allow you to connect your wireless module directly to a PC. One end of the cable provides a standard D-9 connector that plugs into a computers standard serial port. The other end has exposed wires used for connecting with the QTM-8524. Follow the instructions below to wire the module to the cable.
(1) Position Jumper 7 to RS-232 as shown
(7) RS-232
(2) Connect QTM-8524 GND, TX and RX to CA-0910s corre-
sponding RS-232 GND, TX and RX
(3) Connect CA-9010s DB-9 female connector to the PCs RS-232 DB-9 male connector Figure 2.6.1--Connecting QTM-8524 to DB-9 Serial Cable 2.5.2 Connecting QTM-8000 modules to the QTM-8524
(1) Position Jumper 7 to RS-485 as shown
(7) RS-485
(2) Connect QTM-8524 D+ to D+ of QTM-8000 RS-485 network
(3) Connect QTM-8524 D- to D- of QTM-8000 RS-485 network 26 Figure 2.6.2--Connecting QTM-8524 to QTM-8000 Modules Quatech QTM-8524 Manual 3. Antennas 3.1 QTM-8524 Antenna Options Two antennas are available for use with the QTM-8524. The standard an-
tenna, QTM-24ANT-SW, is for general purpose indoor/outdoor applica-
tions, and can be conveniently wall-mounted on a swivel bracket. The op-
tional monopole antenna, QTM-24ANT-C is ideal for office/lab applica-
tions and can be easily mounted on the ceiling. 3.1.1 QTM-24ANT-SW Specifications Standard Wall-Mount Antenna Type: Patch Mount: Swivel bracket Application: General Purpose Gain: 7.5dBi Frequency: 2.4 GHz Transmission Range: 500 Meters, open line-of-sight (50M with barriers) Included Accessories: cable, hardware and connector Figure 3.1.1--QTM-24ANT-SW Transmission Pattern Quatech QTM-8524 Manual 27 3.1.2 QTM-24ANT-C Specifications Ceiling-Mount Antenna Type: Monopole Mount: Ceiling Frequency: 2.4 GHz Gain: 3dBd Weight: 0.29lb ( 0.64 kg) Height: 9 in (22.9 cm) Nominal Impedance: 50 Ohms VSWR: 1.5:1 nominal Transmission Range: 500 Meters, open line-of-sight (50M with barriers) Radiating Element: Plated copper laminate Enclosure: Polycarbonate Application: Office/lab, drop ceiling, transmission Included Accessories: cable, hardware and connector Figure 3.1.2--QTM-24ANT-C Transmission Pattern 28 Quatech QTM-8524 Manual 3.2 Connecting Antennas to QTM-8524 Modules Your QTM-8524 is issued with a high quality communication antenna. To get the maximum performance form your wireless system, please follow the directions and suggestions that follow. 3.2.1 Site Selection Antenna location is extremely important when installing your system. If possible, try to keep the antenna away from any obstructions. Objects and structures made of metal will reduce the efficiency of the antenna. Also, keep in mind that systems like cellular phone repeaters, other wireless LANs, and microwave ovens may interfere with the QTM-8524. If you encounter problems with one frequency, try changing the frequency at which your QTM-8524 modules are operating. Eight (8) different frequencies can be selected using jumper 2 on the module (see Figure 2.4 for a diagram of QTM-
8524 jumper settings.). 3.2.2 Installation Install the antenna and module as per the directions. See section 3.3.1 for detailed QTM-24ANT-SW installation instructions and section 3.3.2 for de-
tailed QTM-24ANT-C installation instructions. Be sure to mount the an-
tenna BEFORE connecting it to the QTM-8524 module. The QTM wireless system should be professionally installed. 3.2.3 Connection Both antennas are supplied with SMA connectors attached to the antenna cable. These connectors are designed for optimum use at high frequencies. To connect the antenna to the module, carefully press the connectors to-
gether and use your fingers to rotate the coupling net clockwise to tighten. DO NOT over-tighten the connection. A 5/16 open ended wrench can be used to secure the connection just a little past finger-tight, but no more. Over-tightening the connection may damage the mating surfaces of the con-
nector, and reduce the performance of your wireless system. Use care not to cross-thread the connector. If you feel resistance when tightening, back the coupling nut off and try again. If the connectors need to be cleaned, use a clean cotton swab and a little pure alcohol. Let the alcohol dry before reconnecting. DO NOT saturate the connector with any liquid. DO NOT use any lubricants on the connector. Warning: The FCC strictly prohibits connecting any other antenna to the QTM-8524. Only Quatech supplied an-
tennas are approved by the FCC for use with this mod-
ule. Use of any other antenna will void your warranty. Quatech QTM-8524 Manual 29 3.3 Mounting External Antennas To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that the equivalent isotropically radiated power (EIRP) is not more than that required for successful communication. 3.3.1 Mounting the QTM-24ANT-SW Please refer to Figures 3.3.1.1 - 3.3.1.3 and follow the instructions below to mount your QTM-24ANT-SW antenna. Be sure to mount the antenna BEFORE connecting it to the QTM-8524 module. The QTM-24ANT-SW should be professionally installed. Reference Description 1 2 3 4 5 6 7 8 9 Molded Wall/Mast Mount Molded Articulating Arm Molded Antenna Mount
#8-32 x 5/8 Machine Screw
#8-32 SS/Nylon Hex Nut 1/4-20 x 1-1/4 Machine Screw 1/4 SS Split Lock Washer 1/4 SS Flat Washer 1/4-20 SS Hex Nut Figure 3.3.1.1 Mounting the QTM-24ANT-SW Steps 1 - 6 30 Quatech QTM-8524 Manual
(1) Route the antenna cable through the mounting plate as shown in Fig-
ure 3.3.1. DO NOT snap the antenna to the mounting plate yet.
(2) Secure the molded antenna mount to the mounting plate as shown in Figure 3.3.1. 1 Use the #8-32 x 5/8 machine screws and the #8-32 SS/
Nylon hex nut as shown.
(3) Snap the antenna into the mounting plate (dashed lines) as shown in Figure 3.3.1.1
(4) Secure the articulated arm to the molded antenna mount using a 1/4-20 x 1-1/4 machine screw, a 1/4 flat washer. a 1/4 lock washer, and a 1/4-20 SS hex nut as shown in Figure 3.3.1.1.
(5) Secure the molded wall/mast mount to the articulating arm using a 1/4-20 x 1-1/4 machine screw, a 1/4 flat washer, a 1/4 lock washer, and a 1/4-20 SS hex nut as shown in Figure 3.3.1.1.
(6) Adjust the length of the cable to minimize the exposed cable loop.
(7) Place the cable guard over the exposed cable and snap it in place, as shown in Figure 3.3.1.2.
(8) To mount the assembly, drill four (4) 3/16 diameter (M4.75) pilot holes for the wall anchors. Use the molded wall/mast mount as a template to drill your holes. Or, cut out the hole template provided on page 45.
(9) Loosen the screws in the boom arm to adjust the antenna position. Tighten the screws when the optimum position is determined. Figure 3.3.1.2-- Mounting the QTM-24ANT-SW Step 7 Quatech QTM-8524 Manual 31 3.3.2 Mounting the QTM-24ANT-C Safety The QTM-24ANT-C antenna has been designed to attach to and hang from standard ceiling panel runners. To prevent personal injury or equipment damage, the antenna must be securely mounted per the following instruc-
tions. The QTM-24ANT-C should be professionally installed. Location The location at which the QTM-24ANT-C is mounted is very important. Objects such as metal columns, walls, etc. will reduce efficiency. Best perfor-
mance is achieved when transmit and receive antennas are mounted at the same height, and in a direct line of sight with no obstructions. If this is not possible, and reception is poor, it is a good idea to try a few different mount-
ing positions to optimize reception. Mounting The QTM-24ANT-C is suitable for use indoors or outside. The antenna bracket fits ceiling support runners 13/15 to 1-1/4 (2.1 to 3.2 cm) wide. To install the antenna, follow the steps below:
(1) Loosen the 1/4-20 hex nut and position the antenna mount over the support runner. (See Figure 3.3.2.1).
(2) Squeeze the bracket firmly onto the runner (hand-pressure is adequate) and tighten the hex nut securely as shown in Figure 3.3.2.2
(3) Carefully screw the antenna onto the 1/4-20 screw (lightly hand-
tighten) as shown in Figure 3.3.2.2
(4) Secure coaxial cable along the support runner using tape or cable ties. If a different mount is used, limit the depth it is threaded into the mounting hole to .35 inches (.9 cm). For outdoor mounting, install the antenna with the threaded hole down. 32 Quatech QTM-8524 Manual Figure 3.3.2.1-- Installing the QTM-24ANT-C Ceiling Mount Bracket Figure 3.3.2.2-- Connecting the QTM-24ANT-C Antenna to the Ceiling Mount Bracket Quatech QTM-8524 Manual 33 3.3.3 RF Safety The QTM-8524 has been classified by the FCC as a 15.247 Spread Spectrum Mobile Transmitter. According to FCC requirements for MPE compliance, the QTM-8524 must be installed to provide a minimum distance of 2 meters from all persons under normal use. The antennas selected for use with this transmitter were chosen to provide opti-
mum safety when installed properly. Please reference Sections 3.3.3 and 3.3.2 of this manual before installing the antennas. Keep in mind that mounting the anten-
nas higher yields a twofold benefit: better reception and less RF exposure to people in the general vicinity. 4. Configuration 4.1 RS-232 or RS-485 Configuration QTM-8524 modules can be configured for either RS-232 or RS-485 serial communication. This setting is selected using jumper seven on the module as shown:
RS-232
(7) RS-485 When connecting the QTM-8524 directly to a PC, RS-232 mode must be used. (See section 2.5.1 for instructions on how to wire the QTM-8524 for connection to a PC.). To implement a QTM-8000 Series network using a single pair of QTM-8524 modules, the upstream module must be configured as RS-232 and connected to the PCs serial port. The downstream modules should be configured for RS-485 in order to communicate with the QTM-
8000 Series data acquisition and signal conditioning modules. When using multiple pairs of QTM-8524 modules in conjunction with the QTM-8520 converter module, both QTM-8524s should be configured for RS-485. (See section 2.5.2.1 for instructions on how to wire the QTM-8524 for connection to a QTM-8000 Series network.) 4.2 Half-Duplex and Full-Duplex Operation QTM-8524 modules can operate in both Full-Duplex and Half-Duplex modes. In Half Duplex mode communication can take place in only one direction at a time. Each device can communicate information in a single direction only-
- transmit or receive. If more than one module transmits data at the same instant, then the data on the bus will be corrupted and therefore invalid. In 34 Quatech QTM-8524 Manual Half duplex mode, all modules must have the same baudrate and frequency configuration and all modules must be jumper configured for slave. (See Figure 2.4 for a diagram of QTM-8524 jumper settings.) In Full Duplex systems, transmission and reception can occur simultaneously. For example, device A can send information to device B while at the same time receiving data from device C. In order for the QTM-8524 modules to function in Full Duplex mode, the module connected to the PC or to the QTM-
8520 must be jumper configured for master, and the downstream QTM-8524 must be jumper configured for slave mode. Both modules must be set to the same baudrate, frequency and channel. When using QTM-8524 modules with QTM-8000 Series I/O modules, Full Duplex mode must be used. Note 1: In Half Duplex operation, the channel selection jumper setting need not be used. Note 2: For a multi-point application, the network must be configured for Half Duplex operation. Thus, QTM-8000 Series data acquisition and signal conditioning modules can not be used in this network type. 4.3 Synchronous & Asynchronous Communication The QTM-8524 can be jumper configured for two modes of data communica-
tion-- synchronous and asynchronous. (This selection is made using jumper 6, see Figure 2.4 for a diagram of QTM-8524 jumper settings.) In synchronous mode, the QTM-8524 uses an internal system clock to synchronize the data bits. When the QTM-8524 is configured for synchronous communication, the PC or serial communication device to which it is attached must send data in the format specified below:
1 START BIT, 8 DATA BITS, NO PARITY, 1 STOP BIT Whether receiving or transmitting, all QTM-8524 modules configured for synchronous communication can only process data in the above format. When configured for asynchronous mode, QTM-8524 modules can process signals in any data format. To prevent data distortion, the sampling rate and data rate in asynchronous networks should be limited to 32 kS/s and 14.4 kbps respectively. Note: QTM-8524 modules configured for asynchronous mode must also be configured for RS-232 communication. Thus, asynchronous mode can not be used when the QTM-8524 is integrated into a QTM-8000 Series data ac-
quisition and signal conditioning network. Quatech QTM-8524 Manual 35 4.4 Configuration Modes Mode 1 : FULL DUPLEX, SYNCHRONOUS Peer-to-peer communication One QTM-8524 configured for MASTER One QTM-8524 configured for SLAVE. Maximum Baudrate: 19200 bps Fixed Data Format: 1 Start Bit, 8 Data Bits, No Parity, 1 Stop Bit Compatible with QTM-8000 Series I/O Networks Mode 2 : HALF DUPLEX, SYNCHRONOUS Multiple Node Communication All Slave Configuration Maximum Baudrate: 57600 bps Fixed Data Format: 1 Start Bit, 8 Data Bits, No Parity, 1 Stop Bit Time Delay between transmit and receive Channel Selection: Disabled Not Compatible with QTM-8000 Series I/O Networks Mode 3 : FULL DUPLEX, ASYNCHRONOUS Peer to Peer Communication One QTM-8524 configured for MASTER One QTM-8524 configured for SLAVE Maximum Baudrate: 14400 bps Variable Data Format Interface: RS-232 ONLY Not compatible with QTM-8000 Series I/O Networks 36 Quatech QTM-8524 Manual 4.4.1 Mode 1: Full Duplex, Synchronous Mode 1 is the most common form of peer-to-peer communication. In this mode, a module first encodes the input data streams. Then, it transmits the data to the downstream QTM-8524 module. The receiving module decodes the data stream and drives the data onto the serial communication lines. In Mode 1, the QTM-8524 modules are configured for full duplex mode and syn-
chronous communication. As mentioned in the previous section, both modules must be configured for the same baud rate, frequency and channel. Note also that the data must be transmitted using the predefined synchronous data format (see section 4.3). Jumper Configuration:
1. 2. 3. 4. 5. 6. 7. Select Channel from C0 - C7 (Jumper 1) Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) Select Baud Rate from 600 bps to 19200 bps (Jumper 3) Select Full Duplex Mode (Jumper 4) Select Master or Slave (Jumper 5) Select Synchronous Communication (Jumper 6) Select RS-232 or RS-485 (Jumper 7)
(See Figure 2.4 for a diagram of QTM-8524 jumper settings.) Advantages:
1. Decreases communication error rate 2. 3. Can be used with QTM-8000 Series I/O modules Increases communication stability Limitations:
Fixed data format Peer-to-peer communication 1. 2. 3. Maximum baudrate: 19200 bps Note: When QTM-8524 modules are used in Mode 1 with QTM-8000 Series I/O modules, the upstream QTM-
8524 connected to the PC should be configured for RS-
232 communication and set to Master mode, the down-
stream QTM-8524 should be configured for RS-485 com-
munication and set to Slave mode. Quatech QTM-8524 Manual 37 4.4.2 Mode 2: Half-Duplex, Synchronous Mode 2 enables communication between two or more QTM-8524 modules. This allows a single QTM-8524 connected to a PC to communicate with multiple other remote QTM-8524 modules also connected to PCs or PLCs. In mode 2, a single QTM-8524 modules broadcasts signals to every other QTM-
8524 module in the network. These modules receive the information, inter-
pret the data, and respond accordingly. Mode 2 requires all modules to be configured for half-duplex synchronous communication. In a half-duplex system all QTM-8524 modules are jumper configured for Slave State, and all must be configured for the same frequency and baud rate. As in Mode 1, the synchronous network requires that data be configured using the predefined data format noted in section 3.2. Jumper Configuration:
1. No Channel Selection 2. 3. 4. 5. 6. 7. Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) Select Baud Rate from 600 bps to 57600 bps (Jumper 3) Select Half Duplex Mode (Jumper 4) Select Slave State (Jumper 5) Select Synchronous Communication (Jumper 6) Select RS-232 or RS-485 (Jumper 7)
(See Figure 2.4 for a diagram of QTM-8524 jumper settings.) Advantages:
1. Decreases communication error rate 2. Increases communication stability Limitations:
1. Fixed data format 2. Half-Duplex Only 3. Cannot be used with QTM-8000 Series I/O Modules 38 Quatech QTM-8524 Manual 4.4.3 Mode 3: Full Duplex, Asynchronous Using Mode 3, QTM-8524 modules can be used to transmit data in any format. In Mode 3, only point-to-point communication is permitted. Both QTM-8524 modules must be configured for full-duplex mode and RS-232 communication, and must share the same frequency. In this mode channel selection is ignored and baud rate need not be synchronized. However, baud rate must be kept under 14.4 kbps. This is because data waveforms may be distorted using data ratesgreater than 14.4 kbps. The controlling appliation must handle all desired synchronizing and error correction duties. Jumper Configuration:
Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) 1. No Channel Selection 2. 3. No baud rate selection 4. 5. 6. 7. Select Full Duplex Mode (Jumper 4) Set one QTM-8524 to Master and one to Slave (Jumper 5) Select Asynchronous Communication (Jumper 6) Select RS-232 (Jumper 7)
(See Figure 2.5 for a diagram of QTM-8524 jumper settings.) Advantages:
Full duplex communication 1. 2. Variable data formats Limitations:
Peer-to-peer communication 1. 2. Maximum Baud Rate: 14.4 kbps 3. RS-232 Communication only 4. Cannot be used with QTM-8000 Series I/O Modules Quatech QTM-8524 Manual 39 5. Application Examples 5.1 Peer-to-Peer Communication (Mode 1) RS-232 QTM-8524 RS-232 QTM-8524 QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Synchronous Master Baudrate: 19200 bps MAX Channel: 1 Interface: RS-232 Full Duplex Synchronous Slave Baudrate: 19200 bps MAX Channel: 1 Figure 5.1-- Peer-to-Peer Communication Figure 5.1 above depicts a basic serial full-duplex communication applica-
tion. In this type of application, both QTM-8524 modules are configured for the same baud rate, frequency and channel. 40 Quatech QTM-8524 Manual 5.2 Interfacing with QTM-8000 Modules (Mode 1) RS-232 QTM-8524 QTM-8000 Series QTM-8524 RS-485 QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Synchronous Master Baudrate: 19200 bps MAX Channel: 1 Interface: RS-485 Full Duplex Synchronous Slave Baudrate: 19200 bps MAX Channel: 1 Figure 5.2--QTM-8524 as part of a QTM-8000 Series Data Acquisition and Signal Conditioning Network Figure 5.2 above depicts QTM-8000 Series data acquisition and signal con-
ditioning modules integrated into a wireless network. The upstream QTM-
8524 connected to the PC should be set for RS-232 communication, the down-
stream QTM-8524 connected to the module network should be set for RS-
485. Both QTM-8524 modules must be configured for the same frequency, channel and baud rate. The attached QTM-8000 Series I/O modules must also be configured at that same baud rate. (Note that because of the speed limitation imposed by the QTM-8524, communication over this network can not exceed 19.2 kbps, even though QTM-8000 Series I/O Modules are them-
selves capable of speeds up to 115.2 kbps.) Up to 256 QTM-8000 I/O mod-
ules can be configured in a network using one pair of QTM-8524 modules. Quatech QTM-8524 Manual 41 5.3 Multiple PC Communication (Mode 2) RS-232 QTM-8524 QTM-8524 Configuration:
(All Modules) Interface: RS-232 Half Duplex Synchronous Slave Baudrate: 57600 bps MAX RS-232 QTM-8524 RS-232 QTM-8524 Figure 5.3--QTM-8524 modules used to network multiple PCs Figure 5.3 above depicts a basic multi-point application. In this type of application, multiple QTM-8524 modules can operate in a single wireless network. All modules must be configured to Half-Duplex communication and must be set in Slave State. Either RS-232 or RS-485 must be selected for the entire network. All modules must also be configured to operate at the same baud rate, channel and frequency. Note that this mode cannot be used with QTM-8000 Series data acquisition and signal conditioning modules. 42 Quatech QTM-8524 Manual 5.4 Asynchronous Communication (Mode 3) RS-232 RS-232 QTM-8524 QTM-8524 PLC QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Asynchronous Master Baudrate: up to 14.4 kbps Interface: RS-232 Full Duplex Asynchronous Slave Baudrate: up to 14.4 kbps Figure 5.4--QTM-8524 modules in an asynchronous network Figure 5.4 above depicts a basic asynchronous communica-
tion application. In this type of application, both QTM-8524 modules must be configured for Full-Duplex RS-232 commu-
nication, and they must operate at the same frequency. Baud rate need not be the same for both modules, however it must be less than 14.4 kbps. Note that asynchronous mode can not be used with QTM-8000 Series I/O Modules. Quatech QTM-8524 Manual 43 6. Approvals FCC Approvals The QTM-8524 is approved pursuant to FCC Part 15.247 for intentional spread spectrum radiators (47CFR15.247) while being used with the Quat-
ech supplied antennas (QTM-24ANT-SW and the QTM-24ANT-C). This certification is applicable in the United States and all of its territories (Guam, Samoa America, US Virgin Islands and Puerto Rico). FCC ID: F4AQTM85242000 The QTM-8524 is approved pursuant to FCC Part 15 Subpart B limits for unintentional radiators. Operation is subject to the following two condi-
tions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate ra-
dio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. How-
ever, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Additional Antennas Operation of this device with antennas that are not supplied by Quatech is strictly prohibited under FCC regulations. Operation with antennas that are non-compliant will void any warrantee whether explicit or implied. 44 Quatech QTM-8524 Manual DOC Approvals (Canada) The QTM-8524 is approved for use in accordance with RSS-210 and RSS-
139. To prevent radio interference to the licensed service, this device is in-
tended to be operated indoors and away from windows to provide maxi-
mum shielding. Equipment (or its transmit antenna) that is installed out-
doors is subject to licensing. CANXXXXXXXXXXX Additional Antennas This device has been designed for use with an antenna having a maximum gain of 7.5dB. Antennas having higher gain is strictly prohibited per regula-
tions of Industry Canada. The required antenna impedance is 50 ohms. Quatech Inc. will not be responsible or liable for systems or damage caused by systems operated with unapproved antennas, and such operation will void all warrantees whether explicit or implied. Quatech QTM-8524 Manual 45 QTM-24ANT-SW Hole Template Cut this template out of the manual and use it as a guide for drilling the holes needed to install your QTM-24ANT-SW wall-
mount antenna. 46 Quatech QTM-8524 Manual
1 | page 34 has revised warning statement in manual | Users Manual | 828.48 KiB |
QTM-8524 2.4 GHz RF Radio Modem Module Users Manual WIRELESS MODEM MODULE FOR QTM-8000 SERIES SYSTEMS QUATECH, Inc. 662 Wolf Ledges Pkwy Akron, Ohio 44311
(330) 434-3154
(330) 434-1409 TEL:
FAX:
http://www.quatech.com QTM-8524 Users Manual Revision 1.0 PN Warranty Information Quatech Inc. warrants the QTM-8524 to be free of defects for one
(1) year from the date of purchase. Quatech Inc. will repair or replace any system component that fails to perform under normal operating conditions in accordance with the procedures outlined in this document, provided the failure occurs during the one year warranty period. Any damage resulting from improper installation, operation or general misuse voids all warranty rights. No representation is made regarding the suitability of this product for any particular purpose. Please complete the following information and retain for your records. Date of Purchase:
Model Number:
QTM-8524 Product:
2.4 GHz RF Radio Modem_ Serial Number:
All products returned to Quatech for either warranty or non-
warranty repair MUST be assigned a Returned Material Authorization (RMA) number prior to shipment. This RMA number must be clearly marked on the exterior of the products return packaging and in any correspondence to ensure proper routing and prompt attention. To obtain an RMA number, contact the Quatech Technical Support Department at 1-800-553-1170 or
(330) 434-3154. In order to prevent damage to returned merchandise during shipment, please package electronic components in anti-static/shock proof materials. For warranty repair/returns, please have the following information available when contacting the Technical Support department:
1. Model number and serial number of the product under warranty, 2. Repair instructions and/or specific description of the problem. For non-warranty repairs or upgrades, contact the Technical Support department for current repair charges and please have the following information available:
1. Purchase order number to cover the cost of the service, 2. Model number and serial number of the product, 3. Repair or upgrade instructions relative to the product. Notice The information contained in this document cannot be reproduced in any form without the written consent of Quatech Inc. Any software programs accompanying this document can be used only in accordance with any licensing agreement(s) between the purchaser and Quatech Inc. Quatech Inc. reserves the right to change this documentation or the product to which it refers at any time and without notice. The authors have taken due care in the preparation of this document and any associated software program(s). Every attempt has been made to ensure accuracy and completeness. Under no circumstances will Quatech Inc. be liable for damages of any kind, incidental or consequential, in regard to or arising from the performance or form of the materials presented herein or in any software program(s) that may accompany this document. Quatech Inc. encourages and appreciates feedback concerning this document. Please send any written comments to the Technical Support Department at the address listed on the cover of this manual. Table of Contents 1. Introduction 1.1 Available QTM-8000 Series Modules 1.2 QTM-8000 Series Common Features 1.3 QTM-8000 Series Wireless Networks 1.3.1 Disadvantages of Conventional Two-Wire RS-485 Networks 1.3.2 The QTM-8000 Series Network Advantage 1.3.3 Operation Principle 1.3.4 Supporting Multiple Baud Rates 1.4 QTM-8000 Series Module dimensions 2. QTM-8524 Specifications 2.1 Pin Assignments 2.2 QTM-8524 Module Specifications 2.3 QTM-8524 Block Diagram 2.4 QTM-8524 Disassembly 2.5 QTM-8524 Jumper Settings 2.6 QTM-8524 Basic Wire Connections 2.6.1 RS-232 Connection Between PC and QTM-8524 2.6.2 Connecting QTM-8000 Modules to the QTM-8524 3. Antennas 3.1 QTM-8524 Antenna Options 3.1.1 QTM-24ANT-SW Specifications 3.1.2 QTM-24ANT-C Specifications 3.2 Connecting Antennas to QTM-8524 Modules 3.2.1 Site Selection 3.2.2 Installation 3.2.3 Connection 3.3 Mounting External Antennas 3.3.1 Mounting the QTM-24ANT-SW 3.3.2 Mounting the QTM-24ANT-C 3.3.3 RF Safety 9 10 11 12 13 14 15 16 17 20 20 21 22 22 24 26 26 26 27 27 27 28 29 29 29 29 30 30 32 34 4. Configuration 4.1 RS-232 or RS-485 Configuration 4.2 Half-Duplex and Full-Duplex Operation 4.3 Synchronous and Asynchronous Communication 4.4 Configuration Modes 4.4.1 Mode 1: Full-Duplex, Synchronous 4.4.2 Mode 2: Half-Duplex, Synchronous 4.4.3 Mode 3: Full-Duplex, Asynchronous 5. Application Examples Interfacing with QTM-8000 Modules (Mode 1) 5.1 Peer-to-Peer Communication (Mode 1) 5.2 5.3 Multiple PC Communication (Mode 2) 5.4 Asynchronous Communication (Mode 3) 6. Approvals 34 34 34 35 36 37 38 39 40 40 41 42 43 44 List of Figures 1.3 QTM-8000 Series Front, Side, Rear and Top Views QTM-8000 Series DIN Rail Mounting QTM-8000 Series Panel Mounting QTM-8524 Block Diagram Disassembling the QTM-8524 QTM-8524 Jumper Settings Connecting QTM-8524 to DB-9 Serial Cable Connecting QTM-8524 to QTM-8000 I/O Modules QTM-24ANT-SW Transmission Pattern QTM-24ANT-C Transmission Pattern QTM-8000 Series Network with Multiple Baud Rates and Multiple Data Formats Single Baud Rate QTM-8000 Wireless Network 1.3.2.1 1.3.2.2 Multi-Baud Rate Wireless QTM-8000 Network 1.4.1 1.4.2 1.4.3 2.3 2.4 2.5 2.5.1 2.5.2 3.1.1 3..1.2 3.3.1.1 Mounting the QTM-24ANT-SW Steps 1-6 3.3.1.2 Mounting the QTM-24ANT-SW Step 7 3.3.2.1 3.3.2.2 Connecting the QTM-24ANT-C Antenna to the Bracket 5.1 5.2 5.3 5.4 QTM-8524 Peer-to-Peer Communication QTM-8524 as part of a QTM-8000 Series I/O Network QTM-8524 Modules Used to Network Multiple PCs QTM-8524 Modules in an Asynchronous Network Installing the QTM-24ANT-C Ceiling Mount Bracket 12 13 14 17 18 19 22 23 25 26 26 27 28 30 31 33 33 40 41 42 43 1. Introduction The QTM-8000 Series of modules is comprised of analog and digital I/O modules designed for a wide variety of data ac-
quisition and signal conditioning functions. These modules are designed for an RS-485 communication network, and re-
quire an RS-485 to RS-232 converter in order to be accessed through a standard PC serial port. The QTM-8520/8520R module performs this function. Unlike many other convert-
ers, the versatile QTM-8520 contains a unique self-tuner ASIC that allows it to process signals from multiple serial devices operating at different baud rates and using different data for-
mats. This flexibility makes a QTM-8000 Series network an extremely cost effective solution for remote signal monitoring and control. The QTM-8524 is a radio modem module that can implement QTM-8000 Series modules as a wireless data acquisition and signal conditioning network. The wireless communication modules form RF communication between peer-to-peer or multi-point structures, which eliminates the use of long cables. Like the QTM-8520, the QTM-8524 functions as a RS-485 to RS-232 converter. However, it does not contain the self-tuner ASIC which means that all modules operating in a QTM-8524 wireless network must be functioning at the same baud rate and using the same data format. To implement a wireless net-
work functioning at several different baud rates, a QTM-8520 module must be used in conjunction with multiple pairs of QTM-8524 modules. Quatech QTM-8524 Manual 9 1.1 Available QTM-8000 Series Modules Wireless Radio Modem Modules:
QTM-8524:
2.4 GHz RF to RS-232 or RS-485 converter Bus Conversion and Repeater Modules:
QTM-8520:
RS-232 to RS-485 converter with 3000V isolation QTM-8520R: RS-232 to RS-485 converter with 3000V isolation QTM-8510:
RS-485 to RS-485 repeater with 3000V isolation Digital I/O Modules:
QTM-8050:
7 digital input s, 8 TTL compatible digital outputs QTM-8052:
8 isolated digital input channels QTM-8060:
4 isolated digital inputs, 4 digital relay outputs Analog Output Modules:
QTM-8021:
Single channel analog (current or voltage) output Analog Input Modules:
QTM-8013D:
Single channel RTD analog input QTM-8014D:
1 analog input, 1 digital input, 2 digital outputs, with LED display. QTM-8017:
8 channel analog input module QTM-8018:
8 channel thermocouple input module Timer/Counter Modules:
QTM-8080D:
2 independent 32-bit counters, 2 digital output channels 5 Hz to 50kHz frequency measurement range 10 Quatech QTM-8524 Manual 1.2 QTM-8000 Series Common Features Communication :
mAsynchronous half-duplex 2-wire RS-485 network mMaximum network distance without repeater=4000 feet (1.2Km) mBaud Rates: 600,1200,2400,4800,9600,19200,38400,57600 (bps) mA single network can accommodate multiple devices with different baud rates and data formats mQTM-8000 series data format=
1 start + 8 data + 1 stop + no parity = 10-bit mTwo extra checksum bytes can be enabled or disabled mBuilt-in transient voltage suppressor and PTC protector mASCII command/response protocol mPlug-in screw terminal block Power :
m+10V ~ +30V DC mPower reverse protection, over-voltage brown-out protection System :
mInternal Dual watchdog, power-on start value and safe value for host failure mOperating temperature : -10 to 70C (14 to 185F) mStorage temperature : -25 to 80C (-13 to 185F) mHumidity : 5 to 95%, non-condensing mIsolation voltage : 3000 VDC Quatech QTM-8524 Manual 11 1.3 QTM-8000 Series Wireless Networks Figure 1.3--QTM-8000 Series Network with multiple baud rates and multiple data formats 12 Quatech QTM-8524 Manual 1.3.1 Disadvantages of Conventional Two-Wire RS-485 Networks:
In a standard RS-485 network, a converter is used to adapt the host PCs single wire RS-232 signal to the two-wire RS-485 signal required by the network. However, when using a standard converter, not only must the baud rate and data format for all signals remain fixed, but they must be identical for all incoming signals. This can pose a problem if multiple types of devices are to be used in a single system, such as a QTM module operating at 115200 bps with a 10-bit per channel data format, and a standard PLC operating at 9600 bps with an 11-bit data format. One solution to this problem is to use two independent two-wire RS-485 networks to accommo-
date both devices. However, this can increase overall system cost and de-
crease system reliability. If devices are capable of operating at different baud rates, but share a single data format, a single standard two-wire RS-485 network can be used, provided that all devices are set to use the lowest common baud rate. While this solution may save on system cost, it is at the expense of performance. 1.3.2 The QTM-8000 Series Network Advantage:
The most desirable system is one in which a single RS-485 network can be used to link devices operating at multiple baud rates with different data formats. The QTM-8000 Series can do just that. Using the QTM-8520 con-
verter module to auto-tune the network, up to 256 devices operating between 1200 and 115200 bps can be controlled via a single standard RS-232 serial port. (Using a QTM-8510 repeater expands the network to 2, 048 devices.) For wireless networks, the QTM-8524 can convert and control the RS-485 network. However, a single baud rate, channel, and frequency must be jumper selected for each module pair. This means that if a QTM-8524 is connected directly to the computers serial port, the network can only function at a single baud rate. To support multiple baud rates in a QTM-8000 wireless network, the QTM-8520 must be used in conjunction with a pair of QTM-
8524 RF modules for each desired baud rate. (See figures 1.3.2.1 & 1.3.2.2) Baud Rate=19.2 kbps Figure 1.3.2.1--QTM-8000 Series Network using a single pair of QTM-8524 modules as an interface to the PC. Quatech QTM-8524 Manual 13 i n a w i r e l e s s Q T M
8 0 0 0 S e r i e s n e t w o r k Q T M
8 5 2 4 m o d u l e s t o s u p p o r t m u l t i p l e b a u d m o d u l e i j n c o n u n c t i o n w i t h m u l t i p l e p a i r s o f F i g u r e 1
. 3
. 2
. 2
U s i n g a Q T M
8 5 2 0 c o n v e r t e r r a t e s 14 Quatech QTM-8524 Manual 1.3.3 Operation Principle (Refer to Figure 1.3.2.1 & 1.3.2.2):
(1) The Host PC sends out a command via COM1.
(2) The QTM-8520 or upstream QTM-8524 converts the RS-232 signal into a RS-485 signal or a RF signal respectively.
(3) All modules connected to the RS-485 network will simultaneously receive this command. Each module in the network will extract the destination address field and compare this value to its local module address. The receiving wireless module first converts the RF signal to RS-485, then sends the command to the downstream modules.
(4) The module to which the command was addressed will execute it, and the other modules will ignore the command.
(5) After executing the command, the addressed module sends a response back to the host PC over the RS-485 or RS-485/RF network.
(6) The QTM-8520 or upstream QTM-8524 module processes the response and converts it from RF/RS-485 to RS-232 for use by the Host PC
(7) Host PC will interpret this result and take appropriate action. Quatech QTM-8524 Manual 15 1.3.4 Supporting Multiple Baud Rates As noted earlier, QTM-8000 Series networks support devices operating at different baud rates. For example, in Figure 1.3 the diagram depicts a wire-
less modem operating at 19200 bps, QTM-8000 Series modules operating at 2400 bps and a PLC operating at 9600 bps. The QTM-8520 converter module can automatically switch to any baud rate in the 1200 bps to 115,200 bps range. In order to support multiple baud rates in a wireless network, the QTM-8520 must be used to auto tune the network and pairs of QTM-8524 RF modules are jumper configured to match the specific baud rate at which downstream modules are operating. When the host PC sends commands it tailors them to the baud rate at which the target module is operating. The QTM-8520 drives the signal from RS-232 to RS-485 at that given baud rate. The QTM-
8524 that is configured for that same baud rate receives the RS-485 com-
mands and converts them to RF. Any other QTM-8524 set for a different baud rate will ignore the command. The RF signal is transmitted along a set channel as selected on the QTM-8524. The downstream QTM-8524 that is configured for that same channel receives the RF signal and converts the commands to RS-485. These commands are then distributed to all the mod-
ules downstream from the receiving QTM-8524. Each module at the target baud rate will determine whether the command is addressed to it (see step 3 in section 1.3.3) and react appropriately. 16 Quatech QTM-8524 Manual 1.4 QTM-8000 Series Module Dimensions FRONT VIEW SIDE VIEW Figure 1.4.1--QTM-8000 Series Front, Side, Rear, and Top Views Quatech QTM-8524 Manual 17 Figure 1.4.2--QTM-8000 Series Din Rail Mounting 18 Quatech QTM-8524 Manual Plastic Part for Panel Mount Figure 1.4.3--QTM-8000 Series Panel Mounting Quatech QTM-8524 Manual 19 2. QTM-8524 Specifications 2.1 Pin Assignments 0 2 1 1 QTM-8524 Wireless RF Modem Frequency Range: 2.4 GHz Channel Spacing: 2 MHz RF Power Output: 0.707W Interface: RS-232/RS-485 1 0 1
(RS-485) DSR RX TX
(R)+Vs
(G)D-
(Y)D+
Computer GND Power GND 20 Quatech QTM-8524 Manual 2.2 QTM-8524 Module Specifications QTM-8524: 2.4 GHz RS-232/RS-485 to RF Converter RF Communication Transceiver Frequency Band: 2426 to 2458 MHz Channel Spacing: 2.048 MHz (8 Channels jumper select) Peak Output Power: 28.5 dBm 2 dB (.707 watts) Modulation: Gaussian Minimum Shift Keying (GMSK) Time Division Duplexing Transmission Range:
RS-232 Line of Sight: .35 miles Semi-Open: 150 ft. Direct Sequence Spread Spectrum Non-Overlapping Channels: 8 Channels, Jumper selectable
(Full-Duplex Mode Only) Modes of Operation: Full Duplex or Half Duplex, Jumper selectable Communication: Asynchronous or Synchronous, Jumper selectable Serial Communication Interface RS-232 (TxD, RxD, GND) or RS-485 (D+, D-), Jumper selectable Baud Rate: 600 bps to 57.6 kbps, Jumper selectable Environments Operating Temperature: 0 C to 50 C Storage Temperature: -30 C to 70 C Power Supply Vs: +10V to +30V DC Unregulated Power Consumption: 1.5W Note: The QTM-8524 must operate in full-duplex, synchronous mode in order to be used with QTM-8000 Series data acquisition and signal conditioning modules. Quatech QTM-8524 Manual 21 2.3 QTM-8524 Block Diagram TX RX D+
D-
RS-232 Interface RS-485 Interface Transceiver Embedded Controller GMSK RF Module antenna
+Vs GND Power Regulator
+5V QTM-8524 Figure 2.3--QTM-8524 Block Diagram 2.4 QTM-8524 Disassembly Disassembly of the QTM-8524 is required to change the jumper settings. Please refer to figure 2.4 and follow the steps below to disassemble the module:
1. Remove the DIN rail mounting bracket by loosening the screws on the front of the unit. 2. Remove the two (2) small screws that were under the DIN rail mounting bracket. 3. Using a small flat bladed screwdriver, gently pry at the corners to separate the plastic case. 4. Set the jumpers as desired and replace the radio assembly in the case. Use care not to flex the cable too much while setting the jumpers. 22 Quatech QTM-8524 Manual 5. Snap the case back together firmly. 6. Insert the two (2) small screws in the back of the unit. 7. Place the DIN rail bracket back (notice locating pins on the bottom of the bracket) and secure tightly. Remove for disassembly Remove for disassembly REAR VIEW Figure 2.4--Disassembling the QTM-8524 Quatech QTM-8524 Manual 23 2.5 QTM-8524 Jumper Settings Factory default jumper settings are indicated below. Baudrate (bps) = 9600 bps Slave Mode Channel 3 RS-232 Interface Frequency Channel = 2439.936 MHz Full Duplex Mode Synchronous Communication Figure 2.5 on the following page diagrams the other possible jumper set-
tings. See section 4 for more information about how QTM-8524 modules should be configured for different types of QTM-8000 wireless networks. Note that the QTM-8524 must be disassambled before jumper settings can be changed. See section 2.4 for disassembly instructions. 24 Quatech QTM-8524 Manual
(1) Channel Select
(2) Frequency Select
(3) Baud Rate Select Channel0 Channel1 Channel2 Channel3 Channel4 Channel5 Channel6 Channel7 2426.112 MHz 2430.720 MHz 2435.328 MHz 2439.936 MHz 2444.544 MHz 2449.152 MHz 2453.760 MHz 2458.368MHz 600 bps 1200 bps 2400 bps 4800 bps 9600 bps 19200 bps 38400 bps 57600 bps QTM-8524
(4)
(5)
(6) Full-Duplex Half-Duplex Slave Master Synchronous Asynchronous
(7) RS-232 RS-485 Figure 2.5.--QTM-8524 Jumper Settings Quatech QTM-8524 Manual 25 2.6 QTM-8524 Basic Wire Connections 2.6.1 RS-232 connection between PC and QTM-8524 The QTM-8524 includes a cable that will allow you to connect your wireless module directly to a PC. One end of the cable provides a standard D-9 connector that plugs into a computers standard serial port. The other end has exposed wires used for connecting with the QTM-8524. Follow the instructions below to wire the module to the cable.
(1) Position Jumper 7 to RS-232 as shown
(7) RS-232
(2) Connect QTM-8524 GND, TX and RX to CA-0910s corre-
sponding RS-232 GND, TX and RX
(3) Connect CA-9010s DB-9 female connector to the PCs RS-232 DB-9 male connector Figure 2.6.1--Connecting QTM-8524 to DB-9 Serial Cable 2.5.2 Connecting QTM-8000 modules to the QTM-8524
(1) Position Jumper 7 to RS-485 as shown
(7) RS-485
(2) Connect QTM-8524 D+ to D+ of QTM-8000 RS-485 network
(3) Connect QTM-8524 D- to D- of QTM-8000 RS-485 network 26 Figure 2.6.2--Connecting QTM-8524 to QTM-8000 Modules Quatech QTM-8524 Manual 3. Antennas 3.1 QTM-8524 Antenna Options Two antennas are available for use with the QTM-8524. The standard an-
tenna, QTM-24ANT-SW, is for general purpose indoor/outdoor applica-
tions, and can be conveniently wall-mounted on a swivel bracket. The op-
tional monopole antenna, QTM-24ANT-C is ideal for office/lab applica-
tions and can be easily mounted on the ceiling. 3.1.1 QTM-24ANT-SW Specifications Standard Wall-Mount Antenna Type: Patch Mount: Swivel bracket Application: General Purpose Gain: 7.5dBi Frequency: 2.4 GHz Transmission Range: 500 Meters, open line-of-sight (50M with barriers) Included Accessories: cable, hardware and connector Figure 3.1.1--QTM-24ANT-SW Transmission Pattern Quatech QTM-8524 Manual 27 3.1.2 QTM-24ANT-C Specifications Ceiling-Mount Antenna Type: Monopole Mount: Ceiling Frequency: 2.4 GHz Gain: 3dBd Weight: 0.29lb ( 0.64 kg) Height: 9 in (22.9 cm) Nominal Impedance: 50 Ohms VSWR: 1.5:1 nominal Transmission Range: 500 Meters, open line-of-sight (50M with barriers) Radiating Element: Plated copper laminate Enclosure: Polycarbonate Application: Office/lab, drop ceiling, transmission Included Accessories: cable, hardware and connector Figure 3.1.2--QTM-24ANT-C Transmission Pattern 28 Quatech QTM-8524 Manual 3.2 Connecting Antennas to QTM-8524 Modules Your QTM-8524 is issued with a high quality communication antenna. To get the maximum performance form your wireless system, please follow the directions and suggestions that follow. 3.2.1 Site Selection Antenna location is extremely important when installing your system. If possible, try to keep the antenna away from any obstructions. Objects and structures made of metal will reduce the efficiency of the antenna. Also, keep in mind that systems like cellular phone repeaters, other wireless LANs, and microwave ovens may interfere with the QTM-8524. If you encounter problems with one frequency, try changing the frequency at which your QTM-8524 modules are operating. Eight (8) different frequencies can be selected using jumper 2 on the module (see Figure 2.4 for a diagram of QTM-
8524 jumper settings.). 3.2.2 Installation Install the antenna and module as per the directions. See section 3.3.1 for detailed QTM-24ANT-SW installation instructions and section 3.3.2 for de-
tailed QTM-24ANT-C installation instructions. Be sure to mount the an-
tenna BEFORE connecting it to the QTM-8524 module. The QTM wireless system should be professionally installed. 3.2.3 Connection Both antennas are supplied with SMA connectors attached to the antenna cable. These connectors are designed for optimum use at high frequencies. To connect the antenna to the module, carefully press the connectors to-
gether and use your fingers to rotate the coupling net clockwise to tighten. DO NOT over-tighten the connection. A 5/16 open ended wrench can be used to secure the connection just a little past finger-tight, but no more. Over-tightening the connection may damage the mating surfaces of the con-
nector, and reduce the performance of your wireless system. Use care not to cross-thread the connector. If you feel resistance when tightening, back the coupling nut off and try again. If the connectors need to be cleaned, use a clean cotton swab and a little pure alcohol. Let the alcohol dry before reconnecting. DO NOT saturate the connector with any liquid. DO NOT use any lubricants on the connector. Warning: The FCC strictly prohibits connecting any other antenna to the QTM-8524. Only Quatech supplied an-
tennas are approved by the FCC for use with this mod-
ule. Use of any other antenna will void your warranty. Quatech QTM-8524 Manual 29 3.3 Mounting External Antennas To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that the equivalent isotropically radiated power (EIRP) is not more than that required for successful communication. 3.3.1 Mounting the QTM-24ANT-SW Please refer to Figures 3.3.1.1 - 3.3.1.3 and follow the instructions below to mount your QTM-24ANT-SW antenna. Be sure to mount the antenna BEFORE connecting it to the QTM-8524 module. The QTM-24ANT-SW should be professionally installed. Reference Description 1 2 3 4 5 6 7 8 9 Molded Wall/Mast Mount Molded Articulating Arm Molded Antenna Mount
#8-32 x 5/8 Machine Screw
#8-32 SS/Nylon Hex Nut 1/4-20 x 1-1/4 Machine Screw 1/4 SS Split Lock Washer 1/4 SS Flat Washer 1/4-20 SS Hex Nut Figure 3.3.1.1 Mounting the QTM-24ANT-SW Steps 1 - 6 30 Quatech QTM-8524 Manual
(1) Route the antenna cable through the mounting plate as shown in Fig-
ure 3.3.1. DO NOT snap the antenna to the mounting plate yet.
(2) Secure the molded antenna mount to the mounting plate as shown in Figure 3.3.1. 1 Use the #8-32 x 5/8 machine screws and the #8-32 SS/
Nylon hex nut as shown.
(3) Snap the antenna into the mounting plate (dashed lines) as shown in Figure 3.3.1.1
(4) Secure the articulated arm to the molded antenna mount using a 1/4-20 x 1-1/4 machine screw, a 1/4 flat washer. a 1/4 lock washer, and a 1/4-20 SS hex nut as shown in Figure 3.3.1.1.
(5) Secure the molded wall/mast mount to the articulating arm using a 1/4-20 x 1-1/4 machine screw, a 1/4 flat washer, a 1/4 lock washer, and a 1/4-20 SS hex nut as shown in Figure 3.3.1.1.
(6) Adjust the length of the cable to minimize the exposed cable loop.
(7) Place the cable guard over the exposed cable and snap it in place, as shown in Figure 3.3.1.2.
(8) To mount the assembly, drill four (4) 3/16 diameter (M4.75) pilot holes for the wall anchors. Use the molded wall/mast mount as a template to drill your holes. Or, cut out the hole template provided on page 45.
(9) Loosen the screws in the boom arm to adjust the antenna position. Tighten the screws when the optimum position is determined. Figure 3.3.1.2-- Mounting the QTM-24ANT-SW Step 7 Quatech QTM-8524 Manual 31 3.3.2 Mounting the QTM-24ANT-C Safety The QTM-24ANT-C antenna has been designed to attach to and hang from standard ceiling panel runners. To prevent personal injury or equipment damage, the antenna must be securely mounted per the following instruc-
tions. The QTM-24ANT-C should be professionally installed. Location The location at which the QTM-24ANT-C is mounted is very important. Objects such as metal columns, walls, etc. will reduce efficiency. Best perfor-
mance is achieved when transmit and receive antennas are mounted at the same height, and in a direct line of sight with no obstructions. If this is not possible, and reception is poor, it is a good idea to try a few different mount-
ing positions to optimize reception. Mounting The QTM-24ANT-C is suitable for use indoors or outside. The antenna bracket fits ceiling support runners 13/15 to 1-1/4 (2.1 to 3.2 cm) wide. To install the antenna, follow the steps below:
(1) Loosen the 1/4-20 hex nut and position the antenna mount over the support runner. (See Figure 3.3.2.1).
(2) Squeeze the bracket firmly onto the runner (hand-pressure is adequate) and tighten the hex nut securely as shown in Figure 3.3.2.2
(3) Carefully screw the antenna onto the 1/4-20 screw (lightly hand-
tighten) as shown in Figure 3.3.2.2
(4) Secure coaxial cable along the support runner using tape or cable ties. If a different mount is used, limit the depth it is threaded into the mounting hole to .35 inches (.9 cm). For outdoor mounting, install the antenna with the threaded hole down. 32 Quatech QTM-8524 Manual Figure 3.3.2.1-- Installing the QTM-24ANT-C Ceiling Mount Bracket Figure 3.3.2.2-- Connecting the QTM-24ANT-C Antenna to the Ceiling Mount Bracket Quatech QTM-8524 Manual 33 3.3.3 RF Safety The QTM-8524 has been classified by the FCC as a 15.247 Spread Spectrum Mobile Transmitter. The antennas selected for use with this transmitter were cho-
sen to provide optimum safety when installed properly. Please reference Sections 3.3.3 and 3.3.2 of this manual before installing the antennas. Keep in mind that mounting the antennas higher yields a twofold benefit: better reception and less RF exposure to people in the general vicinity. According to FCC requirements for MPE compliance, the antennas must be installed to provide a minimum distance of 20cm from all persons under normal use. 4. Configuration 4.1 RS-232 or RS-485 Configuration QTM-8524 modules can be configured for either RS-232 or RS-485 serial communication. This setting is selected using jumper seven on the module as shown:
RS-232
(7) RS-485 When connecting the QTM-8524 directly to a PC, RS-232 mode must be used. (See section 2.5.1 for instructions on how to wire the QTM-8524 for connection to a PC.). To implement a QTM-8000 Series network using a single pair of QTM-8524 modules, the upstream module must be configured as RS-232 and connected to the PCs serial port. The downstream modules should be configured for RS-485 in order to communicate with the QTM-
8000 Series data acquisition and signal conditioning modules. When using multiple pairs of QTM-8524 modules in conjunction with the QTM-8520 converter module, both QTM-8524s should be configured for RS-485. (See section 2.5.2.1 for instructions on how to wire the QTM-8524 for connection to a QTM-8000 Series network.) 4.2 Half-Duplex and Full-Duplex Operation QTM-8524 modules can operate in both Full-Duplex and Half-Duplex modes. In Half Duplex mode communication can take place in only one direction at a time. Each device can communicate information in a single direction only-
- transmit or receive. If more than one module transmits data at the same instant, then the data on the bus will be corrupted and therefore invalid. In 34 Quatech QTM-8524 Manual Half duplex mode, all modules must have the same baudrate and frequency configuration and all modules must be jumper configured for slave. (See Figure 2.4 for a diagram of QTM-8524 jumper settings.) In Full Duplex systems, transmission and reception can occur simultaneously. For example, device A can send information to device B while at the same time receiving data from device C. In order for the QTM-8524 modules to function in Full Duplex mode, the module connected to the PC or to the QTM-
8520 must be jumper configured for master, and the downstream QTM-8524 must be jumper configured for slave mode. Both modules must be set to the same baudrate, frequency and channel. When using QTM-8524 modules with QTM-8000 Series I/O modules, Full Duplex mode must be used. Note 1: In Half Duplex operation, the channel selection jumper setting need not be used. Note 2: For a multi-point application, the network must be configured for Half Duplex operation. Thus, QTM-8000 Series data acquisition and signal conditioning modules can not be used in this network type. 4.3 Synchronous & Asynchronous Communication The QTM-8524 can be jumper configured for two modes of data communica-
tion-- synchronous and asynchronous. (This selection is made using jumper 6, see Figure 2.4 for a diagram of QTM-8524 jumper settings.) In synchronous mode, the QTM-8524 uses an internal system clock to synchronize the data bits. When the QTM-8524 is configured for synchronous communication, the PC or serial communication device to which it is attached must send data in the format specified below:
1 START BIT, 8 DATA BITS, NO PARITY, 1 STOP BIT Whether receiving or transmitting, all QTM-8524 modules configured for synchronous communication can only process data in the above format. When configured for asynchronous mode, QTM-8524 modules can process signals in any data format. To prevent data distortion, the sampling rate and data rate in asynchronous networks should be limited to 32 kS/s and 14.4 kbps respectively. Note: QTM-8524 modules configured for asynchronous mode must also be configured for RS-232 communication. Thus, asynchronous mode can not be used when the QTM-8524 is integrated into a QTM-8000 Series data ac-
quisition and signal conditioning network. Quatech QTM-8524 Manual 35 4.4 Configuration Modes Mode 1 : FULL DUPLEX, SYNCHRONOUS Peer-to-peer communication One QTM-8524 configured for MASTER One QTM-8524 configured for SLAVE. Maximum Baudrate: 19200 bps Fixed Data Format: 1 Start Bit, 8 Data Bits, No Parity, 1 Stop Bit Compatible with QTM-8000 Series I/O Networks Mode 2 : HALF DUPLEX, SYNCHRONOUS Multiple Node Communication All Slave Configuration Maximum Baudrate: 57600 bps Fixed Data Format: 1 Start Bit, 8 Data Bits, No Parity, 1 Stop Bit Time Delay between transmit and receive Channel Selection: Disabled Not Compatible with QTM-8000 Series I/O Networks Mode 3 : FULL DUPLEX, ASYNCHRONOUS Peer to Peer Communication One QTM-8524 configured for MASTER One QTM-8524 configured for SLAVE Maximum Baudrate: 14400 bps Variable Data Format Interface: RS-232 ONLY Not compatible with QTM-8000 Series I/O Networks 36 Quatech QTM-8524 Manual 4.4.1 Mode 1: Full Duplex, Synchronous Mode 1 is the most common form of peer-to-peer communication. In this mode, a module first encodes the input data streams. Then, it transmits the data to the downstream QTM-8524 module. The receiving module decodes the data stream and drives the data onto the serial communication lines. In Mode 1, the QTM-8524 modules are configured for full duplex mode and syn-
chronous communication. As mentioned in the previous section, both modules must be configured for the same baud rate, frequency and channel. Note also that the data must be transmitted using the predefined synchronous data format (see section 4.3). Jumper Configuration:
1. 2. 3. 4. 5. 6. 7. Select Channel from C0 - C7 (Jumper 1) Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) Select Baud Rate from 600 bps to 19200 bps (Jumper 3) Select Full Duplex Mode (Jumper 4) Select Master or Slave (Jumper 5) Select Synchronous Communication (Jumper 6) Select RS-232 or RS-485 (Jumper 7)
(See Figure 2.4 for a diagram of QTM-8524 jumper settings.) Advantages:
1. Decreases communication error rate 2. 3. Can be used with QTM-8000 Series I/O modules Increases communication stability Limitations:
Fixed data format Peer-to-peer communication 1. 2. 3. Maximum baudrate: 19200 bps Note: When QTM-8524 modules are used in Mode 1 with QTM-8000 Series I/O modules, the upstream QTM-
8524 connected to the PC should be configured for RS-
232 communication and set to Master mode, the down-
stream QTM-8524 should be configured for RS-485 com-
munication and set to Slave mode. Quatech QTM-8524 Manual 37 4.4.2 Mode 2: Half-Duplex, Synchronous Mode 2 enables communication between two or more QTM-8524 modules. This allows a single QTM-8524 connected to a PC to communicate with multiple other remote QTM-8524 modules also connected to PCs or PLCs. In mode 2, a single QTM-8524 modules broadcasts signals to every other QTM-
8524 module in the network. These modules receive the information, inter-
pret the data, and respond accordingly. Mode 2 requires all modules to be configured for half-duplex synchronous communication. In a half-duplex system all QTM-8524 modules are jumper configured for Slave State, and all must be configured for the same frequency and baud rate. As in Mode 1, the synchronous network requires that data be configured using the predefined data format noted in section 3.2. Jumper Configuration:
1. No Channel Selection 2. 3. 4. 5. 6. 7. Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) Select Baud Rate from 600 bps to 57600 bps (Jumper 3) Select Half Duplex Mode (Jumper 4) Select Slave State (Jumper 5) Select Synchronous Communication (Jumper 6) Select RS-232 or RS-485 (Jumper 7)
(See Figure 2.4 for a diagram of QTM-8524 jumper settings.) Advantages:
1. Decreases communication error rate 2. Increases communication stability Limitations:
1. Fixed data format 2. Half-Duplex Only 3. Cannot be used with QTM-8000 Series I/O Modules 38 Quatech QTM-8524 Manual 4.4.3 Mode 3: Full Duplex, Asynchronous Using Mode 3, QTM-8524 modules can be used to transmit data in any format. In Mode 3, only point-to-point communication is permitted. Both QTM-8524 modules must be configured for full-duplex mode and RS-232 communication, and must share the same frequency. In this mode channel selection is ignored and baud rate need not be synchronized. However, baud rate must be kept under 14.4 kbps. This is because data waveforms may be distorted using data ratesgreater than 14.4 kbps. The controlling appliation must handle all desired synchronizing and error correction duties. Jumper Configuration:
Select Frequency from 2426.112 - 2458.26 MHz (Jumper 2) 1. No Channel Selection 2. 3. No baud rate selection 4. 5. 6. 7. Select Full Duplex Mode (Jumper 4) Set one QTM-8524 to Master and one to Slave (Jumper 5) Select Asynchronous Communication (Jumper 6) Select RS-232 (Jumper 7)
(See Figure 2.5 for a diagram of QTM-8524 jumper settings.) Advantages:
Full duplex communication 1. 2. Variable data formats Limitations:
Peer-to-peer communication 1. 2. Maximum Baud Rate: 14.4 kbps 3. RS-232 Communication only 4. Cannot be used with QTM-8000 Series I/O Modules Quatech QTM-8524 Manual 39 5. Application Examples 5.1 Peer-to-Peer Communication (Mode 1) RS-232 QTM-8524 RS-232 QTM-8524 QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Synchronous Master Baudrate: 19200 bps MAX Channel: 1 Interface: RS-232 Full Duplex Synchronous Slave Baudrate: 19200 bps MAX Channel: 1 Figure 5.1-- Peer-to-Peer Communication Figure 5.1 above depicts a basic serial full-duplex communication applica-
tion. In this type of application, both QTM-8524 modules are configured for the same baud rate, frequency and channel. 40 Quatech QTM-8524 Manual 5.2 Interfacing with QTM-8000 Modules (Mode 1) RS-232 QTM-8524 QTM-8000 Series QTM-8524 RS-485 QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Synchronous Master Baudrate: 19200 bps MAX Channel: 1 Interface: RS-485 Full Duplex Synchronous Slave Baudrate: 19200 bps MAX Channel: 1 Figure 5.2--QTM-8524 as part of a QTM-8000 Series Data Acquisition and Signal Conditioning Network Figure 5.2 above depicts QTM-8000 Series data acquisition and signal con-
ditioning modules integrated into a wireless network. The upstream QTM-
8524 connected to the PC should be set for RS-232 communication, the down-
stream QTM-8524 connected to the module network should be set for RS-
485. Both QTM-8524 modules must be configured for the same frequency, channel and baud rate. The attached QTM-8000 Series I/O modules must also be configured at that same baud rate. (Note that because of the speed limitation imposed by the QTM-8524, communication over this network can not exceed 19.2 kbps, even though QTM-8000 Series I/O Modules are them-
selves capable of speeds up to 115.2 kbps.) Up to 256 QTM-8000 I/O mod-
ules can be configured in a network using one pair of QTM-8524 modules. Quatech QTM-8524 Manual 41 5.3 Multiple PC Communication (Mode 2) RS-232 QTM-8524 QTM-8524 Configuration:
(All Modules) Interface: RS-232 Half Duplex Synchronous Slave Baudrate: 57600 bps MAX RS-232 QTM-8524 RS-232 QTM-8524 Figure 5.3--QTM-8524 modules used to network multiple PCs Figure 5.3 above depicts a basic multi-point application. In this type of application, multiple QTM-8524 modules can operate in a single wireless network. All modules must be configured to Half-Duplex communication and must be set in Slave State. Either RS-232 or RS-485 must be selected for the entire network. All modules must also be configured to operate at the same baud rate, channel and frequency. Note that this mode cannot be used with QTM-8000 Series data acquisition and signal conditioning modules. 42 Quatech QTM-8524 Manual 5.4 Asynchronous Communication (Mode 3) RS-232 RS-232 QTM-8524 QTM-8524 PLC QTM-8524 Configuration:
QTM-8524 Configuration:
Interface: RS-232 Full Duplex Asynchronous Master Baudrate: up to 14.4 kbps Interface: RS-232 Full Duplex Asynchronous Slave Baudrate: up to 14.4 kbps Figure 5.4--QTM-8524 modules in an asynchronous network Figure 5.4 above depicts a basic asynchronous communica-
tion application. In this type of application, both QTM-8524 modules must be configured for Full-Duplex RS-232 commu-
nication, and they must operate at the same frequency. Baud rate need not be the same for both modules, however it must be less than 14.4 kbps. Note that asynchronous mode can not be used with QTM-8000 Series I/O Modules. Quatech QTM-8524 Manual 43 6. Approvals FCC Approvals The QTM-8524 is approved pursuant to FCC Part 15.247 for intentional spread spectrum radiators (47CFR15.247) while being used with the Quat-
ech supplied antennas (QTM-24ANT-SW and the QTM-24ANT-C). This certification is applicable in the United States and all of its territories (Guam, Samoa America, US Virgin Islands and Puerto Rico). FCC ID: F4AQTM85242000 The QTM-8524 is approved pursuant to FCC Part 15 Subpart B limits for unintentional radiators. Operation is subject to the following two condi-
tions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate ra-
dio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. How-
ever, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Additional Antennas Operation of this device with antennas that are not supplied by Quatech is strictly prohibited under FCC regulations. Operation with antennas that are non-compliant will void any warrantee whether explicit or implied. 44 Quatech QTM-8524 Manual DOC Approvals (Canada) The QTM-8524 is approved for use in accordance with RSS-210 and RSS-
139. To prevent radio interference to the licensed service, this device is in-
tended to be operated indoors and away from windows to provide maxi-
mum shielding. Equipment (or its transmit antenna) that is installed out-
doors is subject to licensing. CANXXXXXXXXXXX Additional Antennas This device has been designed for use with an antenna having a maximum gain of 7.5dB. Antennas having higher gain is strictly prohibited per regula-
tions of Industry Canada. The required antenna impedance is 50 ohms. Quatech Inc. will not be responsible or liable for systems or damage caused by systems operated with unapproved antennas, and such operation will void all warrantees whether explicit or implied. Quatech QTM-8524 Manual 45 QTM-24ANT-SW Hole Template Cut this template out of the manual and use it as a guide for drilling the holes needed to install your QTM-24ANT-SW wall-
mount antenna. 46 Quatech QTM-8524 Manual
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2001-02-21 | 2426 ~ 2458 | DSS - Part 15 Spread Spectrum Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2001-02-21
|
||||
1 | Applicant's complete, legal business name |
B plus B SmartWorx, Inc.
|
||||
1 | FCC Registration Number (FRN) |
0007106719
|
||||
1 | Physical Address |
707 Dayton Rd.
|
||||
1 |
Ottawa, Illinois 61350
|
|||||
1 |
United States
|
|||||
app s | TCB Information | |||||
n/a | ||||||
app s | FCC ID | |||||
1 | Grantee Code |
F4A
|
||||
1 | Equipment Product Code |
QTM85242000
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
M**** M******
|
||||
1 | Title |
Compliance Engineer
|
||||
1 | Telephone Number |
815-4******** Extension:
|
||||
1 | Fax Number |
815-4********
|
||||
1 |
m******@advantech-bb.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
1 | Firm Name |
CKC Laboratories, Inc.
|
||||
1 | Name |
J****** W******
|
||||
1 | Physical Address |
5473A Clouds Rest
|
||||
1 |
Mariposa
|
|||||
1 |
Mariposa, California 95338
|
|||||
1 |
United States
|
|||||
1 | Telephone Number |
1-800******** Extension:
|
||||
1 | Fax Number |
209-9********
|
||||
1 |
s******@ckc.com
|
|||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | DSS - Part 15 Spread Spectrum Transmitter | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | Radio RF Modem, QTM-8524 | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Grant Comments | Power is conducted. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation and transmitter operating conditions for satisfying RF exposure compliance. | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
CKC Laboratories, Inc.
|
||||
1 | Name |
S******** B****
|
||||
1 | Telephone Number |
209-9******** Extension:
|
||||
1 | Fax Number |
866-7********
|
||||
1 |
r******@ckc.com
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | 2426.00000000 | 2458.00000000 | 0.7070000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC