FCC ID: T5GPT5 PT5 UHF Transmitter , PT5 VHF Transmitter

CTWCTWCTWCTW Paging Paging Paging Paging Transmitter VHF/UHF Transmitter VHF/UHF Transmitter VHF/UHF Transmitter VHF/UHF User's Manual VHF/UHF Paging Transmitter User's Manual Copyright Notice Commtech Wireless Pty Ltd reserves the right to make improvements to the product in this manual at any time without notice. No part of this manual may be produced, copied, translated or transmitted in any form or by any means without the written permission of Commtech Wireless Pty Ltd. Information provided in this manual is intended to be accurate and reliable. However, Commtech Wireless Pty Ltd assumes no responsibility for its use, nor infringements upon the rights of third parties, which may result from its use. Reference No. VHF/UHF Transmitter User's Manual Revision 1.0 November 2005 Table of Contents Introduction ........................................................................................................................ 3 1.1 Purpose of Manual......................................................................................................................3 1.2 Document Overview....................................................................................................................3 1.3 Warnings.........................................................................................................................3 Overview ..........................................................................................................................2-2 Basic System Overview ...........................................................................................................2-2 2.1 2.2 Display Modes..........................................................................................................................2-3 Quick Install Guide..........................................................................................................3-2 VHF/UHF Transmitter Unit.......................................................................................................3-2 3.1 3.2 Step by Step Testing................................................................................................................3-2 Menu System ...................................................................................................................4-2 4.1 Menu Navigation ......................................................................................................................4-3 4.2 Main Menu ...............................................................................................................................4-4 4.3

[R] Radio Configuration Menu..................................................................................................4-4 4.3.1

[C] Radio Characteristics Menu...........................................................................................4-5

[S] Serial Port Configuration ....................................................................................................4-6 4.4 4.4.1

[B] Baud Rate Menu ............................................................................................................4-7 4.5

[P] Radio Personality Menu .....................................................................................................4-8 4.5.1

[T] Set Current Time ............................................................................................................4-8

[D] Diagnostics Menu...............................................................................................................4-9 4.6 Diagrams..........................................................................................................................5-2 5.1 Block Diagram VHF/UHF Transmitter......................................................................................5-2 Hardware Installation VHF/UHF...............................................................................................5-3 5.2 Electrical Connections VHF/UHF.............................................................................................5-4 5.3 Technical Specifications.................................................................................................6-2 VHF/UHF Transmitter General ................................................................................................6-2 6.1 6.2 VHF/UHF Transmitter ..............................................................................................................6-2 6.3 ANCILLARIES and FEATURES ..............................................................................................6-3 Trouble Shooting.............................................................................................................7-2 Glossary...........................................................................................................................8-2 1 2 3 4 5 6 7 8 1 INTRODUCTION 1 Introduction 1.1 Purpose of Manual This manual is supplied with the purchase of a VHF/UHF Transmitter product. It provides an overview, installation and operation instructions as well as technical specifications. The manual is the first port of call for all information for operation and installation. Additional information or technical resources may be obtained from:

CommtechWireless Australia (Head Office) ACN 064 705 924 Box 1037, OPDC, WA 6916 30 Hector Street Osborne Park, Perth. Western Australia 6017 Tel: +61 8 6240 0000 Fax: +61 8 6240 0001 Email Or visit our web site at, www.commtechwireless.com 1.2 Document Overview This document is structured along the following guidelines:

! Chapter One describes the purpose of the document and the layout.

! Chapter Two provides an overview of the VHF/UHF Transmitter, its components and operation.

! Chapter Three provides quick Install instructions on the VHF/UHF Transmitter system.

! Chapter Four provides a detailed overview on the Menu System and navigation.

! Chapter Five gives block diagrams, mechanical references and cable installation drawings.

! Chapter Six the source for the technical specifications of the VHF/UHF Transmitter.

! Chapter Seven helps the user in trouble shooting the system.

! Chapter Eight gives a glossary of all the technical terms used. 1.3 Warnings The VHF/UHF paging transmitter must contain an external 2.5 Amp fuse in the wiring to the input connector in order to provide the correct protection of the internal electronics. If the power is connected the wrong way around or over voltage the product may fail, this will void the warranty. Note: Warning Statements: User must keep 65cm distance from the RF radio device 2 OVERVIEW 2 Overview 2.1 Basic System Overview The VHF/UHF Paging Transmitter is a highly integrated communications radio system that includes Audio and Data paging capability. This product will open up new lines of unparalleled high speed reliable data communications in hostile environments while ensuring quick easy field installation and operation. The VHF/UHF is essentially a transmitter capable of emulating a voice and Pocsag systems. The units can be configured for several types of standard link formats and speeds. The transmitter comes from the factory pre-configured. The Transmitter unit maybe connected a PC, laptop or any RS-232 terminal, to display the menus and control the operation of the Device. In operation the Transmitter maybe connected to any RS-232 device. An external simple computer headset can be wired directly to the input connector for complete voice functionality. The VHF/UHF provides a menu system through the RS232 port of the Device. The menu configuration utility is enabled by connecting to the device with a terminal program and typing the command MENU<cr>, or the Hayes control command AT?<cr>. The operational baud rate is configured using the menu system, the baud rate is only valid for the RS232 menu commands and system control commands. Once the option is chosen from the menu, it will not take effect until the command Submit is used to change and save the current configuration. The menu configuration utility will operate at the units pre-configured baud rate. Commtech Wireless User Manual Rev 1_00 Page 2-2 of 32 Rev 1.1 2 OVERVIEW 2.2 Display Modes The Paging transmitter display contains a dual colour LED display indicator. This indicator provides a complete picture of the operation and status of the Paging transmitter system, at a glance a technician can use this to find problems in the field. In standard standby mode the LED will blink green at one second intervals. When the transmitter is activated the LED will remain on in a green steady state condition. When digital data is presented into the data interface the LED will blink fast from red to green, this will indicated changing data on the interface port. When a PC is connected the and RS232 data is moving in and out of the unit then the LED will also fast blink from one colour to another. If the LED remains on constant RED then the system has developed a fault or recognised a fault condition, the status display in the menu will indicated the type of fault, unless the fault is a intermittent one. Faults of this nature are typically like low power supply voltage that dips when the transmitter is under full operation and the voltage cannot be sustained. Commtech Wireless User Manual Rev 1_00 Page 2-3 of 32 Rev 1.1 3 QUICK INSTALL GUIDE 3 Quick Install Guide 3.1 VHF/UHF Transmitter Unit The Transmitter is set at the factory to standard configurations. The transmitters are shipped from the factory with the second lowest power setting, so that the units may operate in close proximity to each other and with simple whip antenna for testing purposes. 3.2 Step by Step Testing First read the Introduction and Quick Install Guide section. Ensure the correct wiring connection as per the DIAGRAM section of the manual Connect the antenna to the BNC socket on the Radio Modem Power the units and check that the display LEDs indicate power and standby modes DISPLAY MODES section of the manual Connect the test transmitter a RS232 terminal device at 19200,8,N,1 communications settings Type the command AT<cr> and check the Radio Modem responds with OK. Use the command AT?<cr> or MENU<cr> to connect into the menu system. Use a test pager with a cap code of 8 and set the transmitter to match the channel and frequency of Use the Diagnostic menu section to send a test page to the test pager. If the test page is received a full RF and data test transmission has now been performed. The unit may now be configured to suit the required application this may include possible modification of the following settings. this device. RS232 Interface settings RF power levels Data and POCSAG control Inversions Frequency and channel selection and control Audio/Data mode control phase on hardware connector Commtech Wireless User Manual Rev 1_00 Page 3-2 of 32 Rev 1.1 4 MENU SYSTEM 4 Menu System The VHF/UHF Transmitter contains its own internal menu system accessed with any general terminal package. The Transmitter allows you to change several parameters to optimise its performance for your particular application. All adjustments are made through a menu system, which is the user interface programmed into each transmitter. A standard terminal program can be used to access the menu system, which eliminates the need for set-up diskettes, DIP-switch settings, or custom software. Laptop computers or Palm top systems are best suited for this operation in the field. The set-up program is invoked by connecting the transmitter to any terminal program, setting the baud rate for that terminal to 19200, 8, N, 1.. While any terminal which can be set to 19200 baud will work, all examples for this manual were generated using the Hyper-terminal terminal program available from the Website (www.hilgraeve.com) and comes standard with most windows installations. When the set-up Menu program is invoked from the main menu screen for the set-up program will come up on the Terminal screen as shown below. The user can select various options from the menu, such as changing the transmitter power. The changes made to the operation of the transmitter are stored in non-

volatile memory to maintain the latest configuration even with loss of power. NOTE: Users not familiar with this type of system should gain additional help.

### CTW VHF Paging Transmitter MAIN MENU (V1.0) ###

Unit Name : Commtech W Serial Number : 2308050001

(R) Radio Configuration Menu

(S) Serial Port Configuration Menu

(P) Radio Personality Menu

(D) Diagnostics Menu

(Esc) To Exit Menu Enter Choice :

Commtech Wireless User Manual Rev 1_00 Page 4-2 of 32 Rev 1.1 4 MENU SYSTEM 4.1 Menu Navigation The menu system contains a level indicator, which shows the depth that the current menu is away from the master level. The indicator is on the first line on the top left most point as the example below. The Indicator will be activated once the menu system is away from the MAIN MENU screen. The example below is shown after the P for Radio Personality is selected.

(1)--- Radio Personality Menu ---

Unit Name : Commtech W Menu Time Out is 05 Minutes

(U) Set Unit Name

(T) Set Current Time

(M) Set Menu Time out

(Esc) Previous Menu Enter Choice :

Commands are terminated by either entering the correct data with the correct amount of characters or by hitting the ENTER KEY. Sub menu selection only requires a single key press to enter the sub menu sections. The ESC key can be used at any time to terminate functions. Menus are reversed, or backed out by using the ESC key, until the main menu area is reached then the question will be asked:

Are You Sure (Y/N) If the answer is Y, then the system will return to the command prompt stage and if NO, the Main Menu will appear again. The Menu system also contains and automatic timer that will reverse the user out of the menu system after the programmed time. The time is measured from the last active menu display, and the time is programmed from the Personality Menu area. The factory back out default time is 5 minutes. With this automatic back out the menu system can be left in any state without any concerns of the system operating correctly once the menu has exited, this prevents field technicians leaving site just to find out that the transmitter has been left in the wrong mode. Commtech Wireless User Manual Rev 1_00 Page 4-3 of 32 Rev 1.1 4 MENU SYSTEM 4.2 Main Menu To activate the main menu system issue the command AT?<cr> or MENU<cr>, and the menu below will be activated.

### CTW VHF Paging Transmitter MAIN MENU (V1.0) ###

Unit Name : Commtech W Serial Number : 2308050001

(R) Radio Configuration Menu

(S) Serial Port Configuration Menu

(P) Radio Personality Menu

(D) Diagnostics Menu

(Esc) To Exit Menu Enter Choice :

The letters indicated in the brackets are the only letters that the terminal system will respond too. Note: Inputs require upper or lower case character entry. Now we will look at each section of the menu and explain the operation of all the controls. 4.3 [R] Radio Configuration Menu The Radio Configuration menu controls all aspects to do with the radio operation, these include frequencies, protocols, and RF characteristics.

(1)--- Radio Configuration Menu ---

POCSAG Data PHASE Normal is ON Data/Audio Input Select Inversion is ON

(C) Radio Characteristics Menu

(P) Toggle POCSAG Data Inversion

(D) Toggle Data/Audio Inversion

(F) Restore Factory Defaults

(Esc) Previous Menu Enter Choice :

POCSAG data phase is used to invert the data to RF Data relationship, for normal operation this should be ON. Data/Audio Input inversion reverses the control of the hardware pin for this function. Commtech Wireless User Manual Rev 1_00 Page 4-4 of 32 Rev 1.1 4 MENU SYSTEM 4.3.1

[C] Radio Characteristics Menu

(2)--- Radio Characteristics Menu ---

Current Tx RF Channel = 00 Channel Raster 20KHz = OFF Narrow Band Deviation = OFF Tx Power Setting = 01 Tx Time OUT Setting = 30 Sec

(C) Channel Selection Menu

(T) Set Tx Time Out Timer

(1) Set Tx Power 100mW

(2) Set Tx Power 1W

(3) Set Tx Power 5W

(D) Toggle Narrow/Wide Deviation

(Esc) Previous Menu Enter Choice :

4.3.1.1 [C] Channel Selection Menu

(3)--- Channel Control Menu ---

Current Tx RF Channel = 00 External Channel Control = ON Base Frequency Transmit = 148.00000 MHz Transmit Bandwidth = 026.00000 MHz 00 148.00000 MHz 01 152.00000 MHz 02 160.00000 MHz 03 166.00000 MHz 04 173.50000 MHz 05 148.00000 MHz 06 148.00000 MHz 07 148.33750 MHz 08 148.33750 MHz 09 148.00000 MHz 10 148.00000 MHz 11 148.00000 MHz 12 148.00000 MHz 13 148.00000 MHz 14 148.00000 MHz 15 148.00000 MHz

(E) Toggle External Channel Control

(T) Set Current Tx Channel

(2) Change Tx Frequency

(Esc) Previous Menu Enter Choice :

Commtech Wireless User Manual Rev 1_00 Page 4-5 of 32 Rev 1.1 4 MENU SYSTEM 4.4 [S] Serial Port Configuration The serial port controls the flow of information in and out of the VHF/UHF Transmitter. The standard setting is 19200, 8, N, 1. If the baud rate needs to be altered for any reason use this menu and the Submit option to change the settings. The serial port and command structure is directly suited to interface into either simple 3 wire control connections or more advanced systems with both software and hardware flow control options.

(1)--- Serial Port Configuration Menu ---

Baud Rate = 19200 bps Data Bits = 08 Flow Control = OFF Parity = OFF ODD Parity = OFF

(B) Baud Rate Menu

(N) Toggle Parity

(O) Toggle ODD Parity

(D) Set to Defaults

(S) Submit

(Esc) Previous Menu Enter Choice :

Commtech Wireless User Manual Rev 1_00 Page 4-6 of 32 Rev 1.1 4 MENU SYSTEM 4.4.1

[B] Baud Rate Menu

(2)--- Baud Rate Menu ---

Baud Rate = 19200 bps

(2) 38400

(3) 19200

(4) 9600

(5) 4800

(6) 2400

(7) 1200

(S) Submit

(Esc) Previous Menu Enter Choice :

Commtech Wireless User Manual Rev 1_00 Page 4-7 of 32 Rev 1.1 4 MENU SYSTEM 4.5 [P] Radio Personality Menu This allows a user to program 10 characters into memory for their own use. It could serve to identify components of the same system or apply a name to the programmed device. The menu is accessed from the main menu system by pressing the P character and then the U character, a prompt will then appear to enter the required data.

(1)--- Radio Personality Menu ---

Unit Name : Commtech W Menu Time Out is 05 Minutes

(U) Set Unit Name

(T) Set Current Time

(M) Set Menu Time out

(Esc) Previous Menu Enter Choice :

4.5.1

[T] Set Current Time The Real Time Clock is a software feature that can track the operational time of the unit from the last power on reset. It is volatile and will reset each time the power is applied. The time can be set in normal 24 hour format for solar applications or long term system diagnosis. When in this menu system a real time output with a second by second update is also displayed at the bottom of the menu system.

(2)--- Psuedo Real Time Clock Menu ---

(H) Set Hours

(M) Set Minutes

(S) Set Seconds

(Esc) Previous Menu Enter Choice :

00:07:36 Commtech Wireless User Manual Rev 1_00 Page 4-8 of 32 Rev 1.1 MENU SYSTEM 4.6 [D] Diagnostics Menu The diagnostic menu system is used to monitor or help debug the installed system. 4

(1)--- Diagnostics Menu ---

Current Mic Level Setting = 127 Test Pager Cap Code = 08 Test Pager Data Rate = 512 bps Test Page Data = Testing 123

(S) Display Status

(A) Adjust Mic Level

(T) Set Test Page

(1) Set Data Rate 512 bps

(2) Set Data Rate 1200 bps

(3) Set Data Rate 2400 bps

(R) Reset UNIT

(Esc) Previous Menu Enter Choice :

When the S option is selected the following data is output to the terminal screen, it is a snapshot of the current real data on the transmitter. Commtech Wireless VHF V1.0 08/09/2005 Unit Time = 00:14:14 Current Temperature = 029 Supply Voltage = 12.6 Switch Mode Voltage = 36

....Hit any Key to Continue Production testing Commtech Wireless User Manual Rev 1_00 Page 4-9 of 32 Rev 1.1 5 DIAGRAMS 5 Diagrams 5.1 Block Diagram VHF/UHF Transmitter Too be completedwhen product is final. Commtech Wireless User Manual Rev 1_00 Page 5-2 of 32 Rev 1.1 DIAGRAMS 5.2 Hardware Installation VHF/UHF The VHF/UHF Transmitter unit is designed to simply bolt into position inside a cabinet or other similar location. Please refer to the mechanical dimensions to aid in drilling mounting holes for the equipment. Mechanical dimensions to be placed here 5 Commtech Wireless User Manual Rev 1_00 Page 5-3 of 32 Rev 1.1 5 DIAGRAMS 5.3 Electrical Connections VHF/UHF The cable harness is installed as per the user requirements. Detailed electrical interface here Commtech Wireless User Manual Rev 1_00 Page 5-4 of 32 Rev 1.1 6 SPECIFICATIONS 6 Technical Specifications 6.1 VHF/UHF Transmitter General Minimum performance to exceed the Following, for 148MHz to 174MHz*:

440 MHz to 470MHz*:

Conforms but not all approved. AS4295-1995, ETS 300 086 Jan 1991, ETS 300 113, ETS 300 279, CEPT T/R 24-01 E Sept 1988, RFS25, RFS26, RFS32, TIA/EIA-603, BAPT 225 ZV 1/2098 (German soft keying), FCC Part 22, 74, 90, 90.210, 80.475, MIL-STD-810E (Parts thereof), EC Marking, EC EMC Directive 89/336/EEC. Synthesis Method:

Modulation:

Channel Spacing:

Synthesizer Step Size:

Channels:

Supply Voltage:

DC Power Consumption:

Operating Temperature:

Physical Size:

Standard LED indicators:

Standard Switches:

Standard Controls:

6.2 VHF/UHF Transmitter MEASURED IN ACCORDANCE WITH TIA/EIA-603 STANDARDS RF Power Output:

Frequency Stability:

Spurii:

RF Switching Bandwidth:

RF Switching Bandwidth PA:

Duty Cycle:

RF Rise Time:

Non mixing PLL Fractional N synthesizer Direct FM, two point method. 12.5kHz/20kHz option 12.5kHz or 20kHz. 16Tx, PC Software selectable or Internal Dip switch 13.8 +/- 20%

<65 mA standby, typically 60mA.

<1.5A for 5W TX RF, typ 1.2A.

-30 to +60C. 62mm Width x 28mm High x 118mm Long. Power, Alarm, RS232 Data Rx/Tx, paging Data Internal DIP switch for channel selection. External Voice/Data select, PTT and RS232 I/O. 100mW to 5W. 1.0PPM for 30 to 60C. Better than -70dBc. Full Sub band. Full Sub band. 50% for 5W RF output with microprocessor thermally controlled fallback system and lockouts.

<50mS with continuous VCO selected

(Controlled RF envelope transmission) Commtech Wireless User Manual Rev 1_00 Page 6-2 of 32 Rev 1.1 6 SPECIFICATIONS 6.3 ANCILLARIES and FEATURES Data Interface RS232 1200 to 38400 bits/second RF Data speed up to 2400 bits/second with wave shaping Fully Programmable / Configurable via Internal Software Flash Firmware Upgrade Capable VF Audio Radio compatibility Built In Test Equipment (B.I.T.E.) and remote diagnostics Broad Band High Efficiency LDMOS PA module Serial Data Interface Digital alignment and calibration Low RFI and EMI emission design Low current consumption Latest technology, full SMD High performance 8 bit processor Based on proven technology Simple disassembly for service Minimal technician adjusts for future maintenance Design spec 40 to 70C Low aging oscillators Minimal interconnections

** Due to ongoing development we reserve the right to alter specifications without notice. Commtech Wireless User Manual Rev 1_00 Page 6-3 of 32 Rev 1.1 7 TROUBLE SHOOTING 7 Trouble Shooting I have the paging transmitter ready for Menu Configuration but I get no menu on my terminal program The largest cause of programming and set up problems with the VHF/UHF Transmitter is caused by incorrect terminal settings or the wrong hardware set up for the applications. Always ensure that the terminal is at the correct baud rate and the flow control is set correctly. When using the Configuration Menu option ensure the terminal is connected to port on the transmitter. The transmitter contains a LED indicator that can be used as a line break out box, use this to diagnose cable problems such as RxD / TxD or flow control issues. Commtech Wireless User Manual Rev 1_00 Page 7-2 of 32 Rev 1.1 8 GLOSSARY 8 Glossary A Alphanumeric Roman Letters (alphabetic) and Arabic numbers (numeric). ARQ Automatic Request Repeat. A form of error correction protocol. That uses retries to correct bad packets of data. ARQ Retries The number of times the radio modem will try to send a packet of lost information before it gives up. ASCII American Standard Code for Information Interchange. Pronounced as-kee. A code by which alphanumeric, punctuation and control characters, commonly found on computer keyboards, are each assigned a unique value between 0-127 (decimal). Asynchronous A data transmission in which the time between characters may vary. Characters are delimited by start and stop bits. Attention Commands (AT Commands) A group of commands created by HayesTM that are recognised by the modem and that begin with AT (or at). Attenuation The loss of power through transmission equipment, lines or other communication devices. Auto answer A modem capability that allows it to automatically pick-up. B Bandwidth The range of signal frequencies that are accepted or passed by a circuit or network. Base Frequency The frequency band occupied by a signal in its original or unmodulated form. The base frequency for the transmitter is 140MHz or 440MHz. Baud This term represents the number of signal elements per second. In asynchronous communication, 1 block has data bits, start bit(s), stop bit(s) and parity bit(s). This is greater than 1 byte and so the time taken to send this package will be different then the time taken to send a byte. This term is not equivalent to BPS

(bits per second), although it is often used in this way. Compare with bit rate. Baud Rate Number of discrete signalling events per second; not necessarily the same as bits per second. Binary A number system with a base of two, using the digits 0 and 1. Commonly used in computers since the values 0 and 1 can easily be represented as OFF and ON in electrical circuits. Bit The smallest piece of information in a binary number system. The word stands for Binary digIT. Bit rate The speed at which bits are transmitted, usually expressed as bits per second (BPS). Block Group of characters treated as a unit for the purpose of data transmission. Commtech Wireless User Manual Rev 1_00 Page 8-2 of 32 Rev 1.1 8 GLOSSARY BPS An acronym for Bits Per Second. Transmission rate of binary numbers (bits). Bridge Joins dissimilar networks and converts protocols such that data can passed between them. For example, a bridge may allow data to be passed from a TCP/IP network to a ISDN network. Buffer Temporary storage area used to compensate for a difference in the rate of data flow into and out of a device. Byte A grouping of bits to specify a single character usually consisting of eight consecutive bits. See also Bit. C Carrier signal The base frequency which is modulated by another signal containing information to be transmitted. Carriage Return The enter key on a keyboard. Causes the curser to move to the beginning of the next line. Carrier Detect (CD) An RS-232 interface signal from the modem to a terminal or personal computer indicating that the modem is receiving a signal from a remote modem. See also DCD. Character A letter, number or other symbol contained in a message or used in a control function. See Byte and ASCII. Clear to Send (CTS) Control signal sent by the DCE to indicate that the DTE may begin a transmission. Competing System A Leased Line. For example X25, QPSX, ISPN. Connection Commands Commands that enable information to be passed between two modems, after a communications link has been established. Connector A physical devices, such as a plug, socket or jack, used to connect one hardware component of a system to another. A connector may also be called a port. Console Part of a computer system, usually a video display terminal, used by the operator to communicate with the computer. See terminal. Contention Condition arising when two or more devices try to transmit at the same time using the same channel. Control Character Any character assigned as ASCII numeric code less than the SPACE character. These characters are used to initiate a control function on the receiving device. Also a symbol you can create by pressing one of your computer's keys while holding down the Control key. These symbols are not usually printed, and are generally used to control screen formatting and cursor positioning. Clear to Sent (CTS) This signal is generated by a modem in response to RTS to indicate that a communications channel has been established and that data can be sent. Cyclic Redundancy Check (CRC) Commtech Wireless User Manual Rev 1_00 Page 8-3 of 32 Rev 1.1 8 GLOSSARY An error-detection technique in which a data validation value is mathematically derived from a block of data and transmitted at the end of the block. The receiving end recomputes the value and if it matches the value sent, the data is assumed to be valid (error-free). If not, the receiver notifies the transmitter that an error has occurred and the block is retransmitted. D Data Any type of information, such as numbers, letters and symbols, that can be processed by a computer. Data Bits The actual characters being transmitted between two computers when asynchronous communications is being used. Usually 7 or 8 data bits are used. A normal byte has 8 bits. 7 data bits are used for ASCII/alphanumeric data. Data Communications Equipment (DCE) Equipment that is used to access a communications network. The DCE provides all the functions required to establish, maintain and terminate a connection, and provides the signal conversion required for communications between the Data Terminal Equipment (DTE) and the telephone network. With RS-232 connections, the modem is generally the DCE device while the computer or terminal connected to a modem is generally the DTE device. See also Data Terminal Equipment. Data Compression An encoding technique which provides for the transmission of fewer data bits without the loss of information. The receiving end expands the data received to its original form. For example, a ZIP file/drive, ARJ file formats, MPEG/JPEG and Gif formats. Data Latency Time delay between input stream and output data. Data Set Ready (DSR) An RS-232 control signal used to indicate the readiness of the DCE (Usually a modem) to accept data from the DTE (usually a terminal or computer). Data Terminal Equipment (DTE) The equipment which provides the data source and/or receiving end of a data transmission link. The DTE may be a personal computer, a printer, a front-end processor to a large mainframe computer or any other device which can transmit or receive data. With RS-232 connections the designation of DTE or DCE determines which device is responsible for generating certain control signals. See also Data Communications Equipment. Data Terminal Ready (DTR) An RS-232 control signal used to indicate the readiness of the DTE for data transmission. DCD An acronym for Data Carrier Detect. See also Carrier Detect. Dedicated Line A communications line which is not dialed. Also known as a leased or private line. Decibel (dB/dBm) Unit of measure indicating the logarithmic ratio of output signal power to input signal power. dB is relative to Watts while dBm is scaled so that is relative to milli-Watts. Default A value, action or setting that is automatically used by a computer system when no other explicit information has been given. Demodulate To recover the information being transmitted by a modulated signal. For example, a conventional radio receiver demodulates an incoming broadcast signal top convert it into sound emitted by a speaker. See also Modulate and Modem. Dial Tone Commtech Wireless User Manual Rev 1_00 Page 8-4 of 32 Rev 1.1 8 GLOSSARY A call progress signal returned by a telephone switching machine to indicate that it is ready to accept a telephone number. ATDT (HayesTM compands) supported for compatibility. Dial-up Establishing a temporary connection to a remote system or computer. Digital Signal A signal composed of discrete signal levels as opposed to the continuous signal levels of an analogue signal. DIP Switch Acronym for Dual In-line Package. Options chosen by pushing a switch to one of two positions. Distortion Undesired change in a signal's original waveform resulting from the characteristics of the transmission circuits or other external influences. Downloading Refers to the transferring of software from a remote system to your computer. DTE An acronym of Data Terminal Equipment. See Data Terminal Equipment. Dumb Terminal Terminals that do not contain an intelligent microprocessor and usually send data one character at a time. Duplex Transmission Independent, simultaneous, two-way transmission. E Echo The re-transmission of characters received by either the modem or remote system back to the DTE. End Point Radio Radios at the end communication path. The radios that are actually requesting and/or supplying information. As opposed to a repeater. Escape Guard Time The amount of time for which no activity is allowed on the data line before and after the sequence is entered. Otherwise the escape sequence will be ignored. Even Parity Even parity refers to the addition of a 0 value or 1 value bit to the data bits which form a character to cause an even number of 1 value data bits to be sent. See also Parity. Extension Numbers The numbers that must be placed after the destination radios number, to access the required port (internal or external). Only available in Point to Multipoint mode. F Fault Log Contains a list of modem faults since the log was last cleared. Firmware Computer program stored permanently in Flash Memory. Flash Memory Non-volatile memory for storing programs and configuration data. Flow Control Controls the flow according to the readiness of the associated terminals to receive and transmit data. May be controlled with hardware or software. Frame See Block. Commtech Wireless User Manual Rev 1_00 Page 8-5 of 32 Rev 1.1 8 GLOSSARY Frame Time Specifies the maximum length of each packet frame (larger the time, the more information that can be contained within the frame). Forward Error Correction (FEC) Technique of transmitting additional information with the original data so that if small errors are detected the correct information can be recreated by the receiving end without requiring a retransmission. Full Duplex Data transmission which allows data to flow in two directions at the same time. G Gateway An electronic connection that joins similar networks together, for example IP to IP. Generally transparent to the user. H Half Duplex Data transmission in which data may flow in either direction at one time, but not both directions simultaneously. Transmission direction is alternatively switched to allow two way flow of data. Handshake A predetermined interchange of signals between two devices to establish conditions for a transfer of data. Hang-up Termination of the Communications Link. As with a normal phone call, the phone must be hung-up so that you can call and receive other calls. Hang-up on DTR Only available with the Main Port. If activated, will terminate the Communication Link when the Data Terminal Ready pin is low. Hardware The electronic or electro-mechanical devices in a computer system as opposed to the programs or software. Hardware Handshaking The use of special RS-232 signals to halt or commence the flow of data between two computers or terminals, between computers and modems or between facsimile machines. See also Software Handshaking, RTS and CTS. HayesTM Company that designed the AT commands. Hertz (Hz) Unit of frequency, one cycle per second. Hopping Pattern Pattern to which the modem jumps through the frequency spectrum as it transmits and receives information. There are 32 hopping patterns available. Host Computer A computer that manages information for many terminals. A host computer may be mainframe, minicomputer or a microcomputer. I Input Information transferred into a computer from some external source, such as the keyboard, a disk drive, a modem or a scanner. Also, the act or process of transferring such information. Input/Output Device A device that transfers information into or out of a computer. Commtech Wireless User Manual Rev 1_00 Page 8-6 of 32 Rev 1.1 8 GLOSSARY Interface A physical point of interconnection between two devices where electrical signal levels, timing, handshaking and pin numbers are defined. The devices, rules or convention by which one component of a system communicates with another. Interference Undesirable disturbances or distortions in a data transmission signal. I/O Input/Output. The transfer of information into and out of a computer. K Kermit Kermit is a file transfer protocol developed for operating systems which could not support the XModem protocol. Kermit was developed at Columbia University in 1981. L Light Emitting Diode (LED) A diode which glows when a current flows through it. Often used as an indicator light. Link A circuit or transmission path, including all equipment, between a sender and a receiver. Local Echo A method of communication in which your modem or software displays data locally on your screen, without relying on the host computer to echo the characters back. Local Command State Also called Terminal Command State. When a computer is communicating with a local modem. The local mode, assumes all commands are for it and acts on the AT commands. As opposed to being connected to a remote modem (see On-Line State). Local Rx Address 4 digit phone number/address of the modem that you are dialing. Each modem, within a network, must have a unique Rx address. Used when dialing a remote modem. Log List of information concerning the modem. See Fault Log, Physical Layer Log, Serial Layer Log. Loopback Directing signals back toward the source at some point in the communications path. Used in testing all types of modems and data systems. M Master Active Modem that synchronises the slave modems to enable the transmission of information. Can communicate with all slaves. Modbus Timer Sends the packet of information when no information has been received for the specified length of time. Modem Modulator/Demodulator. A device to convert data from a computer or terminal into a form suitable for transmission across a telephone system. Modem Returns Response Codes Suppresses (when activated) the Response Codes, so that they are not displayed on the terminal. Modem Eliminator A usually passive device which takes the place of a modem between a local terminal which requires a modem and a computer. Also called Null Modem. Commtech Wireless User Manual Rev 1_00 Page 8-7 of 32 Rev 1.1 8 GLOSSARY Modulate To modify or alter a signal so as to transmit information. For example, conventional broadcast radio transmits sound by modulating the amplitude or the frequency of a carrier signal. See also Demodulate and Modem. Multiplex To interleave or simultaneously transmit two or more messages on a single channel. N NAK Negative Acknowledgement. This control character indicates that the last block transmitted was in error and that the receiver is expecting a re-transmission. Network Address If the modem is a master, then this is the network identification number. Slaves are synchronised by the master that has the same network address. A radio will ignore messages originating from radios with differing addresses. Must be the same for all radios within a network. Network Fail Timeout The length of time that the system will wait after a signal is lost before trying to re-synchronise. Node A point of interconnection on a circuit. Noise Random electrical signals introduced by components of the circuit or natural disturbances which can produce errors in transmission. Non-Volatile Memory Stores data/programs/configurations without the need for a battery backup. Will not be erased if there is a power failure. Nearly permanent. Null Modem See Modem Eliminator. O Odd Parity Odd parity refers to the appending of a 0 or 1 value bit to the data bits of a character to ensure that an odd number of 1 value bits are sent. See also Even Parity and Parity. Off-line Describes to state of a connection as not in session or not currently connected. There is no communications link between the modems, system has not dialled. On-line Requests Timer Controls the time between slave integrity checks by the master. On-line State When a Communications Link is established and dialogue is between your computer and a remote system. The local modem assumes that all information from your computer is to be sent on to the remote modem. All AT commands are ignored by the local modem but are acted upon by the remote modem. See also Local Command State. On-line Time The amount of time spent on-line with an information service. P PABX Private Automatic Branch Exchange. An automatic switchboard for handling large concentrations of telephones (extensions). Commtech Wireless User Manual Rev 1_00 Page 8-8 of 32 Rev 1.1 8 GLOSSARY Packet Group of bits including data and control elements that are transmitted as a whole. Packet Switched Network System where messages are transmitted in packets, each individually addressed and routed through the network. Parity A simple method of error checking by which the number of data bits received are added together to ensure that the correct number have been received. Password Password protection for the menu to prohibit unauthorised menu access and the ability to alter the radios settings. 12 to 18 Alpha-numeric characters. Peripheral (Peripheral Device) A device, such as a video monitor, disk drive, printer or modem, used in conjunction with a computer. Often (but not necessarily) physically separate from the computer and connected to it by wires, cables or some other form of interface. Physical Layer Logging Shows the modem statistics relating to the quantity of data throughput. Point-to-Multipoint Communication One radio (the master) communicates with more that one slave, while each slave can only talk to the master. As opposed to Point to Point Communication. Port The point of connection, usually a physical connector, between a computer and a peripheral device, another computer or a network. Propagation Delay The time required for a signal to travel from one end of a circuit to another. Protocol A set of conventions controlling the timing and format of data communications between two pieces of communications equipment. Public Switched Telephone Network (PSTN) Telephone system providing circuit switching to many customers. Pulse An abrupt and relatively short change in voltage, either positive or negative, resulting in the conveyance of data in a circuit. R RAM Random Access Memory. Received Line Signal Detector See Carrier Detect. Redundancy Check Technique of error detection involving the transmission of additional data related to the message so that the receiving device can determine if the data transmitted is valid (error-free).

% Registers Registers inside the modem that usually contain string values. Can be read and altered on a remote modem using a Communications Link. Examples include Unit Name, Security Code and Local Address. Remote Configuration The accessing of information from a remote radio and the ability to change the remote radios attributes via a Communications Link. Commtech Wireless User Manual Rev 1_00 Page 8-9 of 32 Rev 1.1 8 GLOSSARY Remote System A another PC or network that can be communicated with via modem. Repeater Radio that receives and repeats the signal in a communications path, to extend the range between the End Point Radios. They do not act on the information, only pass it on. Request to Send (RTS) Control signal by the DTE to inform the DCE that it is ready to transmit data. When used for flow control between the DTE and the modem, this signal indicates to the modem that the DTE is ready to accept data. Used mainly in half-duplex communications. Response Codes Also called Result Codes. Screen messages that indicate what the modem is doing. For example, OK will appear when a command has been executed successfully. RF Channels Steps or intervals of frequency divisions in the frequency spectrum. Router Guides data through a network by the address of the data. RS-232C Frequently shortened to RS-232. A standard which defines the physical and electrical interface between Data Communications Equipment and Data Terminal Equipment. The most commonly used interface between modems and computers. Also known as ITU-T V24. RSSI Trigger Level Signal threshold/trigger level in dBm. RTS/CTS Control characters for hardware handshaking. Rx Abbreviation for Receive. S Serial Data Data transmission in which each bit of information is sent sequentially through a single data path. Serial Logging Shows information regarding the performance of both serial ports. Serial Port Port that receives/transmits serial data. Simplex Data communications in one direction only. Slave Passive modem. Requires a Master to synchronise timing to enable successful transmission. May initiate communication, but can only communicate with the Master. Software Computer program or set of computer programs held in storage, and loaded into RAM for execution. Software Handshaking A method of controlling the flow of data between two computers or terminals. Special control characters are sent from one terminal to the other in order to halt or recommence the flow of data. See also Hardware Handshaking. Spread Spectrum Modem Modem that operates within a frequency band (as opposed to operating at a single, fixed frequency), jumping through the frequencies according to the Hopping Pattern. Commtech Wireless User Manual Rev 1_00 Page 8-10 of 32 Rev 1.1 8 GLOSSARY S Registers Registers, inside the modem, that contain whole number values. These can be read and obtained from remote modems by using a communications link. Examples include Escape Sequence Guard Time, Number of Retries for ARQ. Start Bit When a character is transmitted asynchronously to another computer, a start bit always precedes the actual data. Seven or eight data bits, an optional parity bit and a stop bit will follow. Stop Bit The last bit or element transmitted in asynchronous transmission of a character to return the circuit to an idle state. One or two stop bits are sent at the end of each character of data. Synchronous A data transmission in which the time between characters is fixed by synchronising the transmitting and receiving communications equipment. The clock signal is typically derived from the data stream in order to maintain synchronisation. T Telecommunications The transmission of information across long distances, such as over telephone lines. Terminal An input/output device consisting of a typewriter-like keyboard and a display device, used for communicating with a large computer. Any device capable of sending and/or receiving data over a communications channel. Terminal Emulation Refers to the type of ASCII terminal your software will imitate (the control characters used to perform certain screen and cursor movement tasks vary from one terminal to another). Terminal Program Also called Terminal Software, terminal package, emulator. Computer program that deciphers the information received from the modem and send information to the modem as required. Test Link Margin Displays the average signal and noise the modem is measuring. Text The message portion of a data block in synchronous data transmissions. Transmit Power Power of signal emanating from the antenna. This should be the minimum required to maintain a solid data link. Turnaround Time The time required to reverse the direction of transmission when operating in half duplex mode. Tx Abbreviation for Transmit. U Unit Name User defined name for radio. May be used to indicate radio position or other identifying feature. Upload Refers to sending files or text from the users computer to another user. V Virtual Hayes Connection Interface for communication with and management of a remote radio. W Wait Time for Connect Commtech Wireless User Manual Rev 1_00 Page 8-11 of 32 Rev 1.1 8 GLOSSARY Time the radio will wait for valid connection, before indicating communication unsuccessful. X XModem A communications protocol developed in the late '70s by Ward Christensen to perform error checking on data being sent between two computers. See Kermit. XON/XOFF Special control characters used to control the flow of data between your computer and a remote system. See Software Handshaking. Z ZModem Designed to rectify limitations of previous models as well as providing support for high speed, packet and network communications environments Commtech Wireless User Manual Rev 1_00 Page 8-12 of 32 Rev 1.1

Commtech Wireless Pty Ltd FCC ID: T5GPT5 PT5-UHF: EUT-Component View PT5-UHF: EUT-Solder View Commtech Wireless Pty Ltd FCC ID: T5GPT5 PT5-VHF: EUT-Component View PT5-VHF: EUT-Solder View

Commtech Wireless Pty Ltd FCC ID: T5GPT5 EXHIBIT C - EUT PHOTOGRAPHS PT5-UHF: EUT-Bottom View PT5-UHF: EUT-Top View Commtech Wireless Pty Ltd FCC ID: T5GPT5 PT5-UHF: EUT-Side View PT5-UHF: EUT-Port View Commtech Wireless Pty Ltd FCC ID: T5GPT5 PT5-VHF: EUT-Bottom View PT5-VHF: EUT-Top View Commtech Wireless Pty Ltd FCC ID: T5GPT5 PT5-VHF: EUT-Side View PT5-VHF: EUT-Port View Commtech Wireless Pty Ltd FCC ID: T5GPT5 Power Supply View