SRF309 User Manual U081.0.11 User Manual for SRF309 3 November 2014 2014 Cervis, Inc. Module SRF309 This document is the property of Cervis, Inc. and cannot be copied, modified, e-mailed, or reproduced without the express prior written consent of Cervis, Inc. Cervis, Inc. reserves the right to change this manual or edit, delete, or modify any information without prior notification. FCC Statements 15.19 Two Part Warning This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
(1)
(2) This device may not cause harmful interference and This device must accept any interference received, including interference that may cause undesired operation. 15.21 Unauthorized Modification NOTICE: The manufacturer is not responsible for any unauthorized modifications to this equipment made by the user. Such modifications could void the users authority to operate the equipment. 15.27 Special Accessories This device is supplied with special accessories that include an RF adapter cable and antenna. These special accessories must be used with the device. It is the responsibility of the user to use the needed special accessories supplied with the equipment. 15.105(b) Note:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Industry Canada Statements RSS-GEN 7.1.2 Transmitter Antenna / Antenne de L'metteur Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. Conformment la rglementation d'Industrie Canada, le prsent metteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou infrieur) approuv pour l'metteur par Industrie Canada. Dans le but de rduire les risques de brouillage radiolectrique l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonne quivalente (p.i.r.e.) ne dpasse pas l'intensit ncessaire l'tablissement d'une communication satisfaisante. This radio transmitter 7955A-SRF309 has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Le prsent metteur radio 7955A-SRF309 a t approuv par Industrie Canada pour fonctionner avec les types d'antenne numrs ci-dessous et ayant un gain admissible maximal et l'impdance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est suprieur au gain maximal indiqu, sont strictement interdits pour l'exploitation de l'metteur. Approved Antenna List / Liste Antenne Approuv Manufacturer Antenna-Factor/Linx Tech Nearson Or Equivalent Superpass Or Equivalent Part Number ANT-916-SP S467TR-915S Or Equivalent SPDAC80 Or equivalent Stock Number Gain Impedance 353 BB3-06
+1.49dBipeak
+2dBipeak 50 Ohm 50 Ohm BB3-08
+9dBipeak 50 Ohm RSS-GEN 7.1.3 Notice / Dlai This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (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. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. User Manual Table of Contents Table of Contents .......................................................................................................................... i List of Figures ............................................................................................................................... i List of Tables ................................................................................................................................. i Cervis Inc. Safety Precautions ................................................................................................... 1 1.0 SRF309 Introduction ............................................................................................................ 2 1.1 SRF309 Features ............................................................................................................... 2 1.2 SRF309 Pinouts ................................................................................................................ 3 2.0 SRF309 Installation ............................................................................................................ 11 3.0 SRF309 Tune-up Procedure .............................................................................................. 11 4.0 SRF309 Electrical Characteristics .................................................................................... 11 4.1 Supply Voltage and Current .......................................................................................... 11 4.2 Operating Current ........................................................................................................... 12 4.3 SPI Interface .................................................................................................................... 12 5.0 SRF309 RF Characteristics ............................................................................................... 12 List of Figures Figure 1. SRF309 RF section Front .............................................................................................. 3 Figure 2. SRF309 RF section Back ............................................................................................... 3 Figure 3. 07440305-9H-12R, component side, shield removed ................................................. 5 Figure 4. 07420305-9H-12R, component side .............................................................................. 8 Figure 5. 07610305-9H, component side ...................................................................................... 6 Figure 6. 14001301-9H, component side ...................................................................................... 9 List of Tables Table 1. 07440205 PCB connector HDR1 .................................................................................. 3 Table 2. 07420205 PCB connector HDR1 .................................................................................. 7 Table 3. 07610204 PCB connector J10 ...................................................................................... 6 Table 4. 14001200 PCB connector J1 ........................................................................................ 9 2014Cervis, Inc. i Notes and Observations Module SRF309 ii U081.0.11-SRF309 User Manual User Manual Cervis Inc. Safety Precautions Read and follow all instructions. Failure to abide by Safety Precautions may result in equipment failure, loss of authority to operate the equipment, and personal injury. Use and maintain proper wiring. Follow equipment manufacturer instructions. Improper, loose, and frayed wiring can cause system failure, equipment damage, and intermittent operation. Changes or modifications made to equipment not expressly approved by the manufacturer will void the warranty. Owner/operators of the equipment must abide by all applicable Federal, State, and Local laws concerning installation and operation of the equipment. Failure to comply could result in penalties and could void user authority to operate the equipment. Make sure that the machinery and surrounding area is clear before operating. Do not activate a remote control system until certain that it is safe to do so. Turn off the module power before attempting any maintenance. This will prevent accidental operation of the controlled machinery. Do not allow liquid to enter the module enclosure. Do not use high pressure equipment to clean the module. Operate and store units only within the specified operation and storage temperatures defined in the Specifications of this document. 1.0 SRF309 Introduction Module SRF309 The SRF309 receive/transmit module (RTM) is based on a single-chip radio frequency (RF) transceiver integrated circuit (RFIC), an Atmel AT86RF212B. The SRF309 RTM is intended to be integrated into Cervis Inc. products, providing a wireless RF connectivity option. The SRF309 RTM operates in the 915 MHz ISM band, using spread spectrum modulation with a maximum conducted RF transmit power of +8.60dBm at the antenna port. The RFIC generates RF signals compliant with the Zigbee standard, IEEE 802.15.4-2006. The spread spectrum technique is direct sequence (DSSS), the modulation method is binary phase shift keying (BPSK). The RFIC has internal control registers that the host application can access via a serial peripheral (SPI) bus. These registers control all aspects of how the RFIC is used, which must be compliant with all applicable rules and regulations. The SRF309 RTM is interoperable various other Cervis Inc. RTMs that use the same modulation and message data structure. Interoperability with non-Cervis RTMs, while possible, is not supported. The SRF309 RTM is most commonly applied in half-duplex master/slave systems: the master transmits a message to a slave, the slave transmits a reply to the master. Other operating modes are possible, provided that applicable rules and regulations are not violated. The SRF309 RTM may be realized in various PCB shapes, some with non-RF circuits applicable to the requirements of particular hot applications. Mechanical variations include:
07440305-9H-12R Type 1 (tested, pictured) 07610304-9H Type 2 (not yet tested) 07420305-9H-12R Type 3 (not yet tested) 14001301 Type 4 (not yet tested) 1.1 SRF309 Features FCC Part 15 certified IC Certified CE certified 905-925 MHz Operation 2 MHz Selectable Channels Direct Sequence Spread Spectrum (DSSS) Binary Phase Shift Keying (BPSK) modulation (tested) 40 kbps Data Rate (tested) Up to +8.60dBm Output Power (tested) IEEE 802.15.4-2006 messaging SPI host interface Simple power requirements: 3.0-3.3V low noise regulated, 20mA 2 U081.0.11-SRF309 User Manual User Manual Figure 1. SRF309 RF section Front Figure 2. SRF309 RF section Back 1.2 SRF309 Pinouts Table 1-4 show the pinouts and interface signals on several alternative packaging options for the SRF309 RTM:
Table 1. 07440205 PCB (SRF309 Type 1) connector HDR1 Pin 1 2 3 4 5 Name SPI_CLK GND MISO MOSI RF_SLP_TR Signal SPI data clock in ground SPI data out SPI data in RFIC control 6
/RF_RST RFIC reset Details Clock from SPI master Low impedance ground Data from SPI slave Data from SPI master Multipurpose control signal from master Low from SPI master 2014Cervis, Inc. 3 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
/RF_CS RF_IRQ RF_PAEN RF_HGM/BPA GND GND DISPLAYCS
/RFEE_CS (reserved) DISPLAYRS DISPLAYBLANK reserved reserved DISPLAYRST reserved LED_6 LED_7 LED_4 LED_5 LED_2 LED_3 LED_0 LED_1 GND GND
+24VDC
+5VDC
+3.3VDC RFIC chip select RFIC interrupt output Enable external PA Enable external LNA or Read BPA jumper ground ground Display chip select EE chip select Display register select Display on/off reserved reserved Display reset reserved Indicator Indicator Indicator Indicator Indicator Indicator Indicator Indicator ground ground
+3.0-30V
+3.0-30V
+3.3V REVBAT Not required for SRF309
+3.0-30V Module SRF309 Low from SPI master Input to SPI master High from SPI master Function not used in SRF309 Input to SPI master Low impedance ground Low impedance ground Low from SPI master Low from SPI master From SPI master From SPI master reserved reserved Low from SPI master reserved High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master Low impedance ground Low impedance ground Power indicator LED Power indicator LED Power indicator LED, RF & logic power. Low noise 50mA max. Power indicator LED The 07440305-9H-12R PCB assembly includes all circuits and features required for properly implementing the SRF309 RTM. The PCB also provides circuits and mounting for various optional non-RF features of use to a host application, including:
12 indicator LEDs (default installation) LED/LCD display module (future use) 4 U081.0.11-SRF309 User Manual User Manual Figure 3. 07440305-9H-U-12R, component side, shield, internal label, external antenna connector 2014Cervis, Inc. 5 Table 2. 07610304 PCB (SRF309 Type 2) connector J10 Module SRF309 Pin 1 2 3 4 5 Name SPI_CLK GND MISO MOSI RF_SLP_TR 6 7 8 9 10 11 12 13 14 15 16 17
/RF_RST
/RF_CS RF_IRQ RF1_3VD GND RF1_3VA GND RF_PAEN RF_HGM/BPA GND GND GND Signal SPI data clock in ground SPI data out SPI data in RFIC control RFIC reset RFIC chip select RFIC interrupt output
+3.3V ground
+3.3V ground Enable external PA Enable external LNA or Read BPA jumper ground ground ground Details Clock from SPI master Low impedance ground Data from SPI slave Data from SPI master Multipurpose control signal from master Low from SPI master Low from SPI master Input to SPI master RF & logic power. Low noise 25mA max. Low impedance ground RF analog power. Low noise 25mA max. Low impedance ground High from SPI master Function not used in SRF309 Input to SPI master Low impedance ground Low impedance ground Low impedance ground 6 The 07610304-9H PCB assembly includes all circuits and features required for properly implementing the SRF309 RTM Type 2. Figure 4. 07610304-9H, component side, shield and label not shown U081.0.11-SRF309 User Manual User Manual Table 3. 07440206 PCB (SRF309 Type 3) connector HDR1 Pin 1 2 Name
/RFEE_CS (reserved) RF_SLP_TR Signal EE chip select RFIC control 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
/RF_RST RF_IRQ
/RF_CS RF_PAEN RF_HGM/BPA SPI_CLK MOSI MISO GND GND LED_7 LED_6 LED_5 LED_4 LED_3 LED_2 LED_1 LED_0 GND GND REVBAT
+5VDC
+3.3VDC RFIC reset RFIC interrupt output RFIC chip select Enable external PA Enable external LNA or Read BPA jumper SPI data clock in SPI data in SPI data out ground ground Indicator Indicator Indicator Indicator Indicator Indicator Indicator Indicator ground ground
+3.0-30V
+3.0-30V
+3.3V
+24VDC Not required for SRF309
+3.0-30V Details Low from SPI master Multipurpose control signal from master Low from SPI master Input to SPI master Low from SPI master High from SPI master Function not used in SRF309 Input to SPI master Clock from SPI master Data from SPI master Data from SPI slave Low impedance ground Low impedance ground High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master High from SPI master Low impedance ground Low impedance ground Power indicator LED Power indicator LED Power indicator LED, RF & logic power. Low noise 30mA max. Power indicator LED The 07440306-9H-12R PCB assembly includes all circuits and features required for properly implementing the SRF309 RTM Type 3. The PCB also provides circuits and mounting for various optional non-RF features of use to a host application, including:
12 indicator LEDs (default installation) 2014Cervis, Inc. 7 Module SRF309 Figure 5. 07440306-9H-12R, component side, shield and internal label not shown 8 U081.0.11-SRF309 User Manual User Manual Table 2. 14001200 PCB (SRF309 Type 4) connections Pin 1 2 3 4 5 Name SPI_CLK GND MISO MOSI RF_SLP_TR 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
/RF_RST
/RF_CS RF_IRQ RF1_3VD GND RF1_3VA GND RF_PAEN RF_HGM/BPA GND GND GND GND GND RF Port GND Signal SPI data clock in ground SPI data out SPI data in RFIC control RFIC reset RFIC chip select RFIC interrupt output
+3.0-3.3V ground
+3.0-3.3V ground Enable external PA Enable external LNA or Read BPA jumper ground ground ground ground ground Antenna connection ground Details Clock from SPI master Low impedance ground Data from SPI slave Data from SPI master Multipurpose control signal from master Low from SPI master Low from SPI master Input to SPI master RF & logic power. Low noise 25mA max. Low impedance ground RF analog power. Low noise 25mA max. Low impedance ground Active high from SPI master Function not used in SRF309 Input to SPI master Low impedance ground Low impedance ground Low impedance ground Low impedance ground Low impedance ground 50 Ohm RF In/Out port Low impedance ground The 14001301 PCB assembly includes all circuits and features required for properly implementing the SRF309 RTM Type 4. It is similar in RF operation to the 07440305-9H-12R
(Type 1) RTM. Figure 4. 14001301, component side and with shield+label. 2014Cervis, Inc. 9 Module SRF309 Type 4 Module Application Engineering:
The Type 4 module requires that the host application provide suitable mechanical and electrical mounting, control and power signals, an approved antenna that is properly mounted and a proper RF transmission line to connect the RF port on the module to the antenna feed port. Mounting: This module must be mounted on a ground plane that extends at least 8mm from the RF shield edges. All connections between the host application and the module are to be soldered. Power and Control Signals: All connections listed in Table 4 must be made. RF Transmission Line:
The RF connection between the module RF port and the antenna feed port must have a nominal 50 Ohm impedance, have low insertion loss and be as short as practical. Microstrip transmission line may be implemented as part of the host PCB. Coaxial cable may be used to connect to an external antenna. Coaxial cable can be attached either with a suitable connector or may be directly soldered to where the host PCB attaches to the RF port of the module. If a replaceable external antenna is used the user-accessible external connection must be a unique type such as RP-TNC, RP-SMA, etc. 10 U081.0.11-SRF309 User Manual User Manual 2.0 SRF309 Installation When integrating an SRF309 RTM into a host application, the user must provide all text in the FCC Statements and Industry Canada Statements in the host applications user manual (see Forward Material). The text must not be modified in any way and presented in a conspicuous manner that the end user can be reasonably expected to access. When integrating the SRF309 RTM into host application hardware, the user must properly connect all the circuits identified in Table 1 to suitable host application signals. The host application firmware must properly control the RTM to ensure that emitted RF signals comply with all applicable regulatory approvals. The SRF309 RTM is always provided with an approved type of antenna, either internal fixed or external replaceable. If a fixed internal antenna is provided as part of the RTM, the on-board coaxial cable connectors are not populated. If the module is assembled for use with an external antenna, one of the on-board coaxial cable connector positions will be populated. The choice of the particular type of coaxial connector that is installed will be decided by the designer of the host application. The on-board connector is not accessible to users, so it does not need to be unique. When provided, external replaceable antennas always have a unique connector such as: RP-
N, U.FL/IPEX, RP-SMA, RP-BNC or RP-TNC. A suitable coaxial cable jumper with appropriate connectors must be used to connect the SRF309 RTM external antenna port to the external antenna. The details of a particular host application will affect the design of the jumper coax, but the external connector must always be of an acceptable unique type. The coaxial cable used to make the jumper between the RTM and the external antenna mounting position must be suitable for use at 915 MHz and have 50 Ohm impedance. Low loss cable such as RG-316 is suggested, although signal loss will be small if the jumper length is short. External coaxial cables may be used to help mount the replaceable external antenna in a more useful location. Such cable must have appropriate unique connectors and must be made from low loss 50 Ohm coaxial cable. Cables equivalent to LMR-195 are suitable for lengths up to 30 feet. Longer cables must have suitably lower signal loss, typically using larger cable such as LMR240, LMR-300, or larger (or equivalent). At some point, a practical limit is reached where losses in extension cables negate any gains from relocating the antenna. 3.0 SRF309 Tune-up Procedure There is no tune-up procedure. The module contains no adjustable components. Proper RF operation of the module is verified during the manufacturing process using suitable equipment and methods. 4.0 SRF309 Electrical Characteristics 4.1 Supply Voltage and Current The SRF309 RTM (the components under the RF shield) requires the host application to provide a low noise (linear regulator as opposed to a switching regulator) regulated 3.0-3.3 VDC source that can provide 20mA without losing regulation. The RTM does not provide under-voltage, over-voltage, or reverse polarity protection so use caution when applying power. The RTM contains a low noise linear 2.5V regulator (Fig 1.U2, top-center) that buffers the analog power to the RFIC RF section. The RFIC has another internal low noise 1.8V regulator (see the data sheet for Atmel AT86RF212B). 2014Cervis, Inc. 11 Module SRF309 All external connection pints designate as signal GND should be connected to the host application GND circuit so as to maintain as low a resistive and reactive impedance as practical. The PCB hosting the RTM should be fabricated with low impedance copper floods that connect to GND. The SRF309 RTM can safely operate with a supply voltage over the range of 3.0-3.3V with minimal changes in RF performance. Testing was performed at 3.3V, the preferred supply voltage. Some implementations of the SRF309 module may have additional non-RF functions. The additional circuits may draw current in addition to what the SRF309 RF circuits use. 4.2 Operating Current The SRF309 RTM has four primary operating conditions that draw differing amounts of current from to 3.0-3.3V power source:
Off PLL_ON RX TX PA is reduced because the full +8.60dBm RF output power is not required. RFIC is powered down, minimal load RFIC is ready to transmit or receive, ~5mA RFIC is receiving a message, ~12mA RFIC is transmitting, ~15-20mA, depending on TX output power In TX mode the operating current may be less than the maximum if the drive to the external 4.3 SPI Interface The SPI interface between the RFIC (slave) and the host application (master) microcontroller requires four signals:
SCLK The serial data clock from the SPI master. Must be less than 8 MHz. MOSI Serial data from the SPI master. MISO Serial data from the SPI slave. RF_CS Chip select from the SPI master. The SPI controller setting must be established by the host application microcontroller to be compatible with the SPI interface timing specified by the RFIC data sheet. 5.0 SRF309 RF Characteristics 5.1 General RF Information The RFIC used in the SRF309 RTM implements RF modulation modes and timings in compliance with IEEE 802.15.4-2006. The RFIC implements additional proprietary RF modulation modes. Details may be found in the AT86RF212B RFIC data sheet. The SRF309 general spread spectrum scheme is DSSS. The modulation type is BPSK. The data rate is 40kbps. 5.2 RF Exposure Considerations The antennas used with the SRF309 RT module should be positioned to minimize possible RF exposure hazards. Handheld applications of the SRF309 RT module must maintain an antenna separation distance >15mm when used in a normal operating pose. Mobile applications of the 12 U081.0.11-SRF309 User Manual User Manual SFR309 RT module must maintain an antenna separation distance >20cm away from areas that are likely to be occupied by human body parts. that include an SRF309 RT module. These separation requirements must be included in end-user manuals for host applications 2014Cervis, Inc. 13 Module SRF309 Visit our Web site at: www.cervisinc.com 2014 Cervis, Inc. All rights reserved. Content is subject to change without notice. 14 U081.0.11-SRF309 User Manual