SATELLINE 1915 User Guide V1.1
Contents
1. 30 7 8 31 7 9 Long range point to point example with repeater 32 7 10 Long range point to multipoint example with repeater 33 SLEEP MO DES occa de inira 34 9 DIAGNOSTICS AND TESTING gt nn 36 10 APPENDIX 40 SATELLIN E 1915 User Guide version 1 0 INTRODUCTION SATEL is a Finnish electronics and telecommunications company specialised in the design and manufacturing of wireless data communication products SATEL designs manufactures and sells radio modems intended for use in applications ranging from data transfer to alarm relaying systems End users of SATEL products include industrial companies public organisations and private persons SATEL is one of the leading radio modem suppliers worldwide The SATEL radio modems are type approved in most countries globally Primary characteristics of SATELLINE 1915 are listed below SATELLINE 1915 radio has a raw data rate of 9 6 kbps or 115 2 kbps SATELLINE 1915 radio modems DTE interface Data Terminal Equipment user device is electrically compatible with the RS 232 serial interface RD TD RTS CTS DTR DSR lines are implemented o Settings can be changed with AT commands or binary commands SATELLINE 1915 ra2. 0x23 Q uery Set serial data parity 0 0x4 0x0 0 no parity or 7 bit with any parity ATSB 0x37 0 serial data stop bits 0 0 1 1 byte 0 1 stop bit 1 2 stop bits 15 SATELLIN E 1915 User Guide version 1 0 4 3 Serial interface handshake When using the RS 232 serial interface handshake signals can be used to control the data transfer Handshaking is used by the terminal to request a permission to send data to the radio modem Handshaking is used by the radio modem to inform the terminal that the radio modem serial data input buffer is has space or is full By default handshaking is used to stop data flow when there is space for only 17 bytes in input buffer The input buffer size is 2048 bytes SATELLIN E 1915 supports software and hardware handshaking 4 3 1 Software handshaking XON XOFF In software handshaking XO N XO FF the radio modem will transmit XO FF character 0x13 to the terminal when the input buffer is full When the input buffer has space the radio modem will transmit XO N character 0x11 to the terminal to continue transmission 4 3 2 Hardware handshaking RTS CTS In hardware handshaking RTS CTS separate signal lines are used to control the data flow RTS Request To Send CTS Clear To Send The terminal asserts RTS line when it wants to transmit and radio modem will respond with asserting CTS if there is space in the input buffer AT BIN Default ATFT Q Set inpu
3. SATELLIN E 1915 User Guide version 1 0 Query Set Radio Mode 0 Normal operation 3 Polling Base 4 Polling Remote 5 Repeater 6 Repeater End 7 1 Radio packet SATELLIN E 1915 has following settings that need to be correct before data can be received 1 The hopping pattern must be same in the radio modems 2 The Vendor ID must be the same in the radio modems 3 The Destination Address in the transmitting radio modem must match the settings in the receiving radio modem The SATELLIN E 1915 has following radio packet structure INITIALIZER HOPPING PATTERN VENDOR ID DT PID DATA CRC 16 The Initializer is sent every time a new connection sequence begins to synchronize the radio modems The length of the Initializer is different when the sleep mode is used By default the Initializer is 6 milliseconds at 115200 bps radio data rate The hopping pattern information is used to verify that the data packet received had the same hopping pattern setting Vendor ID is used to verify that the receiving radio modem has the same Vendor Id setting as the transmitter The Destination Address is used to check if the data packet should be received or not The Packet Identifier is used with repeating and Acknowledgements The Packet Identifier includes the source address ATM Y of the transmitting radio modem and a running number for the packet If the radio modem has already received a packet with the same Packet Identifie
4. up to OxFFFF it remains at its maximum count value until the maximum count value is manually changed or the module is reset The GD parameter is not reset by pin serial port or cyclic sleep modes RC Ambient Power Single Channel Command The RC command is used to examine and report the power level on a given channel Sample output 78 dBm when CF 0 4e when CF 1 78 when CF 2 RE Restore Defaults Command The RE command is used to restore all configurable parameters to their factory default settings The RE Command does not cause default values to be stored to non volatile persistent memory For the restored default settings to persist in the module s non volatile memory and be saved in the event of RF module reset or power down the WR Write command must be issued prior to power down or reset 36 SATELLIN E 1915 User Guide version 1 0 RM Ambient Power All Channels Command The RM command is used to examine and report power levels on all channels If no parameter is given the channels are scanned one time If a parameter is given the channels are repeatedly scanned for that number of seconds The maximum power level seen for each channel is reported i e peak hold A graphical spectrum analyzer can be implemented by repeatedly sending the RM command with no arguments and reading the resultant 50 power levels this is easiest to do when CF 1 or 2 Sample output when CF 0 Ch 0 100 dBm Ch 1 10
5. Delay Slots following could happen Two or more user devices transmit at the same time The radio packets collide in the air and no Acknowledgements are received Therefore every radio modem transmits the radio packet again Again collision happens This repeats until all the radio modems have sent the packets ATRR times If the ATRR is 0 no Acknowledgements are used When ATRR is 1 the packet is transmitted at maximum 2 times if no Acknowledgement has been received If the Random Delay Slots are enabled a random time is waited after a transmission without an Acknowledgement and before the next attempt If the Destination Address of the transmitting radio modem is a broadcast address OxFFFF Acknowledgements must be set to 0 O therwise every radio packet is transmitted ATRR 1 times because no receiving radio modem will acknowledge 28 SATELLIN E 1915 User Guide version 1 0 AT BIN Bm ATRR 0x18 Query Set Acknowledgement Retry OxFF 1 byte value Disabled if ATRR 0 gt 0 or ATDT OXFFFF This value is also used with repeaters ATTR OX1B Query Set the amount of missed 0 OxFFFF 2 byte iy a mr 7 5 Short range point to point example Here is an example for point to point network with two radio modems This is the easiest way with default addresses DT 0x0 default DT 0x0 default RR 0x0 RR 0x0 MT 0x0 default MT 0x0 default should be set to 0 from the de
6. contradictory to local regulations and or requirements and or laws 18 SATELLIN E 1915 User Guide version 1 0 The transmitter can be set to transmit only mode AT BIN Default ATTX Query Set transmission only mode 0 0 1 1 byte 0 TX amp RX 1 TXonly 5 2 Receiver The receiver sensitivity is 110 dBm at radio speed 9 6 kbps and 100 dBm at radio speed 115 2 kbps The signal strength of the last received radio packet RSSI current signal strength of one channel and current signal strengths of all the hopping channels can be queried with AT commands AT BIN Default signal strength of the last Depends on ATCF received radio packet If no packets Do have been received the value is 0x8000 Q uery current signal strength of one Depends on ATCF channel one of the 50 channels of the Do hopping pattern 2 80 CR Q uery current signal strength of all the 0 0x7D0 2000 Depends on ATCF 50 hopping channels If parameter is seconds given the channels are scanned for that time in seconds and the result is the peak power value The response of ATRM depends on the ATCF value The channels are numbered from 0 to 49 19 SATELLIN E 1915 User Guide version 1 0 5 3 Error checking SATELLINE 1915 has a 16 bit CRC error checking for the radio packets The received packets with erroneous CRC will be dropped 5 4 Radio data rate and packet length The radio data rate can
7. select the hopping pattern from 10 different predefined hopping patterns Every hopping pattern uses 50 different frequencies within the 902 928 MHz frequency band The raw data rate of the radio interface is always fixed 9 6 or 115 2 kbps irrespective of the data speed of the serial interface In cases where the terminal speed exceeds the throughput of the radio interface the modem will buffer the data in order to prevent data loss 5 1 Transmitter The output power of the transmitter is adjustable The greatest allowable power which must not be exceeded depends on the limits set by local authorities The output power of the transmitter should be set to the smallest possible level which still ensures error free connections under variable conditions Large output power levels using short connection distances can in the worst case cause disturbances to the overall operation of the system OUTPUT PO WER mw 0 Possible output power settings of the SATELLIN E 1915 radio modem ATPL Q uery Set transmitter power level NO TE Setting the radio data modem output power level to levels exceeding regulations set forth by local authorities is strictly forbidden The setting and or the use of non approved power levels may lead to prosecution SATEL is not responsible for any illegal use of its radio equipment and is not responsible in any way for any claims or penalties arising from the operation of its radio equipment in ways
8. selected 1 or 2 bits O ne character to be transmitted will thus contain a start bit the data bits which define the actual character in question an optional parity bit and one or two stop bits The overall length of one character is therefore 10 11 or 12 bits This should be taken into account when calculating the data throughput capability of a system In other words also the number of start stop and parity bits must be considered A useful rule of thumb is that at a data transfer speed of 9600 bps the transmission of one character will require roughly one millisecond 1 ms 14 SATELLIN E 1915 User Guide version 1 0 Start Data Parity Stop Asynchronous character data format Example With an 8 bit data character length and taking for example a decimal value of 204 which corresponds to a binary value of 11001100 and with a start bit value of 0 parity bit set to either NO NONE 0 or 1 and with a stop bit value of 1 the possible combinations are listed in the table below If the settings of data speed character length parity or the number of stop bits differ between the radio modem and the terminal errors will be introduced into the transferred data The serial port settings of each individual radio modem in a system can be different In other words the data transfer speed parity and number of stop bits can be different in different parts of a same System AT BIN Default
9. the delay is random it is not totally collision free To use the radio modems for example with sensor applications polling mode can be used In polling mode the polling radio modem Polling Base polls the other radio modems Polling Remote in order In polling mode the repeaters cannot be used The best mode depends on the user application and network type In short ranges point to point p to p point to multipoint p to mp and sensor applications are possible In longer ranges with repeaters only point to point and point to multipoint are possible In point to point and point to multipoint network the application should be polling in other words a master and a slave s If the application allows both or many user devices to transmit at the same time random delay with acknowledgements can be used This is not totally collision free but the performance is adequate in most cases Reliability Radio Polling Short range p to p Multiple Transmis Short range p to p Individual Multiple Transmits or Acknowledgements Short range p to mp Multiple Transmits Short range p to mp Individual Multiple Transmits ot Acknowledgements application Acknowledgements range p to p Broadcast MultipleTransmts range p to p Indivdual MultipleTransmis No Long range p to mp Broadcast MultipleTransmits Long range p to mp Individua Multiple Transmits Yes 25
10. 15 User Guide version 1 0 5 1 TES IDE 18 5 2 Receiver 19 5 3 Error 20 5 4 Radio data rate and packet 20 6 COMMAND UN LEER ARREUNKRUSRARENID UK CERTA 21 6 1 Configurauolu cos rn Udo A ORDOUE ROG CORO KC ROGO ERO DOR ELA 21 6 1 1 Changing the settings with AT commands sss 21 6 1 2 Back up method for entering the Command 23 6 1 3 Changing the settings with Binary 5 m 23 6 1 4 Restoring default Settings suus icto om decedere eren Pea rue imr ea eve Yr Ent erri peces 24 7 RADIO MODES AR AF CER RE REF V EE SA 25 7 1 Radio PACK CE cuoc a NEVER Rak 26 7 2 Addressing asse ske nua eite RES RIDE E RUE RN VR AN ER EUR Y ORARE M KA S AR RM 27 7 21 avc en Fete tri OG lec a Ro eR 27 7 3 Multiple Tr nsmit 28 7 4 28 7 5 Short range point to point 29 7 6 Short range point to multipoint example eere 30 7 7 Short range sensor
11. 3 dBm Ch 49 99 dBm Sample output when CF 1 64 67 63 Sample output when CF 2 100 103 99 SH Serial Number High Command SH Command is used to set read the serial number high word of the RF module SL Serial Number Low Command SL Command is used to set read the serial number low word of the RF module TP Board Temperature Command TP Command is used to read the current temperature of the board TR Transmit Error Count Command The TR command is used to report the number of retransmit failures This number is incremented each time a packet is not acknowledged within the number of retransmits specified by the RR Retries parameter The number of packets therefore is counted that were not successfully received and subsequently discarded The TR parameter is not non volatile and is reset to zero when the RF module is reset VL Firmware Version Verbose The VL command is used to read the verbose firmware version of the RF module WA Active Warning Numbers Command The WA command reports the warning numbers of all active warnings one warning number per line No further information is shown and warning counts are not reset 37 SATELLIN E 1915 User Guide version 1 0 WN Warning Data Command WN command is used to report the following data for all active and sticky warnings Warning number amp description Number of occurrences since the last WN or WS command Whether the warning is currently
12. Cyclic Sleep in 100 ms Ox7FF D100 2 10 s 0 0 Q uery Set the length of Wake Up Initializer in 0 OxFFFF 2 byte 100 ms This must be longer than C yclic period 0x03 0 uery Set Time before Wake Up Initializer in100 ms This must be shorter than ATST ATPW 0x1D Q uery Set Pin Wake Up in Radio Cyclic Sleep 0 1 1 0 Disable 1 Enable 34 SATELLIN E 1915 User Guide version 1 0 An example of Radio Cyclic Sleep In this example the Cyclic Sleep Period is 4 seconds The receiving radio modem is wake for 1 second after every 4 seconds The transmitting radio modem that wakes the other radio modem has the length of the Wake Up Initializer as same as the Cyclic Period and two times the wake up time so 4 1 1 6 seconds The transmitting radio modem has the time before the Wake Up Initializer is sent 10 percent shorter than the ATST in the receiving radio modem DT 010 default RR 0x0 SM 6 ST 0xA 010 1000ms HT 0x9 900 ms HT OxFFFF default off PW 0x0 default PW 0x0 default The power usage is in the idle mode 1 W in the Sleep mode 0 4 W and in the transmission with 1 W radio output power 6 W 35 SATELLIN E 1915 User Guide version 1 0 9 DIAGNOSTICS AND TESTING DB Received Signal Strength Command DB Command is used to read the receive signal strength in decibels relative to mW of the last received packet This parameter is useful in determining range chara
13. D SAFETY INSTRUCTIONS nnn 4 TABLE OF 3e Ea nA SES 5 INTRO DUCTION Muse NETTE 7 1 SATELLINE 1915 RADIO DATA MODEM 11er 8 1 1 SATELLINE 1915 Technical specifications e eee eres 8 2 cessat es BEER REC 9 2 1 Powell SUPPly 9 2 2 DIN 41651 16 connector functions 10 2 21 adu elus haste obs 10 3 LEDS aaaea aaa a a aaa aa daei aaea anaa paenan iaiT ana 13 3 1 TOES 13 4 SERIAL INTERFACE 14 4 1 RS 23214 4 2 Serial interface data uana Rau Rua 14 4 3 Serial interface 16 4 3 1 Software handshaking 16 4 3 2 Hardware handshaking 16 4 4 Serial interface packetization eee eese eere eene nne nnn nnn 17 5 ITI 18 SATELLIN E 19
14. PD value is at the Base the minimum time between polls in this example 64 milliseconds The ATPD value at the Remote is the time how long the Remote unit buffers the serial line data in this case 640 milliseconds The value is the same but at the Remote it is 10x bigger It is advisable to use the same ATPD value at the Polling Remote so no data is lost if there is more transmissions from other Polling Remotes If the ATPD value is 0x3E8 1000 the Polling Base will first poll the first Polling Remote and then the other in this example After the polling there is a one second break N ote The Radio Polling is not shown in the TX led of the radio modem only in the RX led 7 8 Repeater SATELLINE 1915 radio modem has a store and forward repeater function for extending the coverage of the radio modems In a radio network configuration with repeater at least one unit must be a repeater and multiple units can be repeater end nodes If the radio packet is addressed to the repeating radio modem it will not repeat it Based on the packet information field in the radio packet the receiving device will send the received radio packet only once to the serial port Multiple instances of the same radio packet are discarded in the receiving device When the network has a repeater the Radio Mode of all the devices has to be set to a repeater or to a repeater end node if the radio modem is not repeating When a repeater or repeater end node mode has been se
15. SATELLIN E 1915 User Guide version 1 0 IMPORTANT NOTICE Parts of this manual are used by permission of MaxStream Inc All rights to this manual are owned solely by SATEL O y referred to in this user guide as SATEL All rights reserved The copying of this manual without the written permission from the owner by printing copying recording or by any other means or the full or partial translation of the manual to any other language including all programming languages using any electrical mechanical magnetic optical manual or other methods or devices is forbidden SATEL reserves the right to change the technical specifications or functions of its products or to discontinue the manufacture of any of its products or to discontinue the support of any of its products without any written announcement and urges its customers to ensure that the information at their disposal is valid SATEL software and programs are delivered as is The manufacturer does not grant any kind of warranty including guarantees on suitability and applicability to a certain application Under no circumstances is the manufacturer or the developer of a program responsible for any possible damages caused by the use of a program The names of the programs as well as all copyrights relating to the programs are the sole property of SATEL Any transfer licensing to a third party leasing renting transportation copying editing translating modifying into another prog
16. active Warnings which are not currently active and have not been active since the last issuance of the WN or WS commands are not displayed The WN command also resets all non zero warning counts except for warnings that are presently active which are set to 1 Under voltage This is caused if the internal supply voltage of modem falls below the minimum threshold for the lowest power level 2 8 V If when the voltage rises above the threshold the warning is deactivated The module will not transmit below this voltage threshold O ver voltage This is caused if the internal supply voltage of modem exceeds 5 75 V Transmission is not allowed while this warning is active Under temperature This is caused if the temperature sensed by the modem is less than 40 C The modem does not artificially limit operation while this warning is active but modem functionality is not guaranteed O ver temperature This is caused if the temperature sensed by the modem is greater than 105 The modem does not allow transmission nor reception while this warning is active The warning is deactivated when the temperature falls to 100 C 5 Power reduced This is caused if the transmit power has to be reduced from the level programmed by PL Command due to insufficient supply voltage The 1 W power level requires internal supply voltage 4 75 V or higher 500 mW requires 3 0 V or higher 100 mW 10 mW and 1 mW require 2 8 V or higher Default calibration data
17. al line is sent multiple times in the radio without breaks Each retransmission has the radio initializer to maximize the reception The receiving radio modem will send the received radio data to the serial line only once This feature can be used with short packets where Acknowledgements would take longer time By default the Multiple transmit is The Multiple Transmit will be used if the Acknowledgements and the Multiple transmit are both ON at same time The radio packets are sent 1 times so with default ATMT value 0 radio packets are sent once AT BIN 0x3D Q uery Set Multiple Transmit value 0 OxFF 7 4 Acknowledgements To increase the reliability SATELLINE 1915 radio modem has Acknowledgements If enabled the transmitting radio modem will wait for an Acknowledgement for the transmitted radio packet from the receiving radio modem If no Acknowledgement is received the packet is sent again until an Acknowledgement is received or the packet has been sent the maximum amount of Acknowledgement Retry times By default the value is 10 0 If the ATMT value is different 0 the Multiple Transmit has precedence over the Acknowledgements and Acknowledgements are not used The Acknowledgements cannot be used with repeaters To avoid a situation that two or more user devices and radio modems transmit at the same time resulting in a collision in the air Random Delay Slots can be defined Without Random
18. and Mode automatically with serial port speed 9600 bps Now the AT commands can be used to change settings if necessary Remember to disconnect the PRO G signal from the ground after the changes 6 1 3 Changing the settings with Binary Commands Binary Commands are like AT Commands and can be used to achieve faster performance for setting and querying the settings There are differences in the usage 1 Binary Commands must first be enabled with AT Commands The AT Command controls the behavior of the RTS CMD line Therefore when Binary Commands are used hardware handshaking cannot be used 2 Every time a Binary Command is to be issued the RTS CMD line must be asserted high and on the other times it must be driven low 3 The Binary Commands are given in binary No enter is needed Parameters are sent least significant byte first The ATCF command cannot be used 0x16 Q Set RTS CMD line behavior 0 0x2 0x0 1 byte 0 Disabled 1 Binary Commands 2 RTS hardware handshake 23 SATELLIN E 1915 User Guide version 1 0 An example of using binary commands to change the source address ATRT has been set to 1 RTS CMD line is asserted high 10 ms before MY command the parameter Ox1A0F and WR commands are sent to the radio modem 0x24 MY Command OxOF least significant byte OxLA most significant byte 0x08 WR Command Responses can be omitted for faster perfor
19. be set to 9600 bps or 115200 bps default AT BIN Default ATBR Query Set radio data rate 0 0x1 0 1 1 byte 0x39 0 9600 bps 1 115200 bps The maximum length of a radio packet can be limited The maximum length of the radio packet is 256 bytes at radio data rate 9600 bps and 2048 bytes at radio data rate 115200 bps If the radio data speed is lowered from 115200 to 9600 bps the maximum radio packet length is set bigger than 0x100 D256 The maximum length of a radio packet also affects serial data packetization settings The serial interface packetization value ATRB must be equal or smaller than ATPK The ATRB value 15 automatically lowered to match ATPK AT BIN Default ATPK 0x29 Query Set radio packet maximum 0 0 800 0 100 9600 size 0x800 115200 0 TX amp RX 1 TXonly 20 SATELLIN E 1915 User Guide version 1 0 6 COMMAND MODE 6 1 Configuration The settings of SATELLIN E 1915 are fully configurable with AT commands or binary commands 6 1 1 Changing the settings with AT commands Connect cables RS 232 cable to power supply cable to power supply o Switch on the PC and start a terminal program o Open a terminal window and select serial port parameters as follows 9600 bit s 8 data bits no parity 1 stop bit These are the default settings If serial parameters are changed the changed parameters should be used for entering command mode o Type to the radio modem
20. cation master The application slaves will not receive data from other application slaves The application master will receive the data from all application slaves Radio modem 1 master Radio modem 2 slave Radio modem 3 slave MD 0x0 default MD 0 0 default MD 0 0 default MY 0 1 0 2 MY 0x3 MY 0G 2 MK default default default DT OxFFFF DT 0d DT 0 1 RR 00 RR 00 RR 00 0 0 default 0 0 default 0 0 default 7 7 Short range sensor example If the application has devices that can transmit data at any time the collisions in the air will affect the behaviour For example multiple sensors that need to transmit information to the base Therefore it is recommended to use SATELLIN E 1915 Radio Polling In Radio Polling one radio modem is set as a Polling Base and the others are Polling Remotes The Polling Base can transmit at any time butthe Polling Remotes can only transmit when the Polling Base polls them The radio modems must have individual addresses and the polled addresses must be defined in the Polling Base The time between polling can also be defined 30 SATELLIN E 1915 User Guide version 1 0 Radio modems DT 0x0 RR 0x0 MT 0x0 default 0x0 default The addresses must be set up correctly For reliability the Acknowledgements ATRR or Multiple Transmits can be used MTRR The AT
21. cteristics of the RF modules under various conditions In default mode this command shows the power level in signed decimal format with the units dBm If CF 1 the magnitude of the value is presented in unsigned hex If CF 2 the value is presented in decimal but without the units Sample output 88 dBm when ATCF 0 58 when ATCF 1 88 when ATCF 2 NOTE the DB register is read before the module has received an RF packet the module will return a value of 0x8000 which means an RF packet has not yet been received ER Receive Error Count Command The ER command is used to set read the number of receive errors The error count records the number of packets partially received then aborted on a reception error This value returns to 0 after a reset and is not non volatile value does not persist in the module s memory after a power up sequence O nce the Receive Error Count reaches its maximum value up to OxFFFF it remains at its maximum count value until the maximum count value is explicitly changed or the module is reset The ER parameter is not reset by pin serial port or cyclic sleep modes GD Receive Good Count Command The GD command is used to set read the count of good received RF packets Its parameter value is reset to 0 after every reset and is not non volatile the parameter value does not persist in the RF module s memory after a power up sequence Once the Receive Good Count reaches its maximum value
22. dio modem software can be updated using a PC and special programming software User guide version information This version of the User G uide is applicable for SATELLIN E 1915 having the firmware version 2040 or later SATELLIN E 1915 User Guide version 1 0 1 SATELLINE 1915 RADIO DATA MODEM 1 1 SATELLINE 1915 Technical spedfications RADIO TRANSCEIVER Frequency Range Communication Mode Hopping Patterns Channels in Hopping Pattern Radio Speed RADIO TRANSMITTER Carrier Power RADIO RECEIVER Sensitivity MODEM Interface Interface Connector Data Speed of Serial Interface Data format GENERAL O perating Voltage Power Consumption average Temperature Range O perating Storage Antenna Connector Housing Size H xW xD Installation Plate Weight 902 928 MHz Half Duplex Frequency Hopping 10 different 50 9600 115200 bps 1 10 100 500 1000 mW 50 ohm 110 dBm 9600bps BER 10E 4 100 dBm 9 115200bps lt 10E 4 RS 232 DIN41651 16pin male 10 230400 bps also non standard baud rates between 10 230400 Asynchronous RS 232 8 30 Vdc 0 72 VA 60 mA 12 V Receive 1 1 VA 90 mA 9 12 V 10 mW Transmit 5 0 VA 420 mA 12 V 1 W Transmit 0 024 VA 2 mA 12 V Sleep mode NA AA 25 55 C tests acc To ETSI standards 40 75 C absolutely min max 40 85 C Reverse Polarity SMA 50 ohm male Plastic Aluminium
23. do not use enter within one second to enter the Command Mode Note the Guard Time before default 1 second when no data should be sent o The radio modem will respond with O K o Make desired changes to the settings The AT commands have two types a query and a setting A query has a format ATXX enter where XX is the command A setting has a format ATXXvalue enter where value is the desired setting All the commands must end to carriage return enter The radio modem will respond to commands with O K or with a value o To save the changes permanently type ATWR enter o To exit the command mode type ATCN enter The radio modem will exit automatically the command mode after an inactivity timeout default 2 seconds which can be changed ATPL enter Q uery transmitter power level ATWR enter OK CR Save the changes ATCN enter OK CR Exit the command mode 21 SATELLIN E 1915 User Guide version 1 0 tcn OM A An example of using the AT commands in terminal program The responses for the AT Commands have three types value or ERRO R In the command descriptions only value response type is mentioned excluding the carriage return The Guard Times for Command Mode can be changed with AT commands BIN 0x04 Q uery Set Guard Time before 0 OxFFFF 2 bytes in 100 milliseconds ATAT uery Set Guard Time afte
24. een communicating equipment is less than 15 m The otherwise useful RS 232 standard is applied in a multitude of slightly differing ways e g different pin configurations and for this reason different computers and peripherals are not necessarily directly compatible with each other NOTE When connecting equipment using RS 232 make sure that the equipment are to be connected together or share the same ground potential or that the signal ground of one and or both of the devices are floating Major differences in ground potentials will lead to large currents flowing in the SGND wire of the RS 232 interface which might lead to malfunctions or damage to the connected devices Supported standard serial speeds are 1200 2400 4800 9600 19200 38400 57600 115200 and 230400 bps Also non standard baud rates are supported between 10 230400 bps Hardware handshake can be used but it has to be setO N in command mode 4 2 Serial interface data format The SATELLINE 1915 radio modem serial interfaces use asynchronous data format No external synchronising signal is needed since necessary timing information is acquired from the start and Stop bits transmitted before and after each data byte The data transfer speed of the serial interfaces can be set to 1200 2400 4800 9600 19200 38400 57600 115200 and 230400 bps bits per second The length of the data field must be 8 bits A parity bit may also be used The number of stop bits can be
25. enclosure 125 x57 x19 mm 130x63 x1mm 1159 NO TE Values are subject to change without notice SATELLIN E 1915 User Guide version 1 0 2 1 Power Supply The allowed operating voltage is 8 30 Vdc The pin 1 of the DIN41651 16 connector is connected to the positive power supply line Negative power supply line ground is connected to pin 2 of the DIN41651 16 connector The DTR line of the radio modem which is connected to pin 14 can be used as an ON STANDBY switch Connecting the DTR to ground will turn the radio modem O FF Leaving the DTR unconnected will turn the radio modem the radio modem has internal pull up for The basic connection between a radio modem and the serial port RS 232 of a PC is described in the schematic below 9 PIN D CONN 25 PIN D CONN RADIOMODEM 3 TD RD 5 SGND NOTE The modem has an internal multifuse external fuse is not required SATELLIN E 1915 User Guide version 1 0 2 2 DIN 41651 16 pin connector functions The radio modem is referred to as DCE Data Communication Equipment whereas the PC is referred to as DTE Data Terminal Equipment SATELLINE 1915 radio modem includes a 16 pin DIN41651 type male connector which contains all the connections required to establish communication between the radio modem acting as the DCE and the PC acting as the DTE All EMC requirements set forth by authorities have been taken into account in the design of the radio modem The user
26. fault value 0 10 otherwise both radio modems will transmit every radio packet 10 times because no Acknowledgements are received for broadcast address 0 Effectively this has the same effect as using the Multiple Transmission with value 9 Naturally this affects the throughput In any case only one received packet is sent to the serial port To use the Acknowledgements with individual addresses the following setup is recommended Radio modem 1 Radio modem 2 MD 0 0 default MD 0 0 default 0 1 0x2 default DT 0 1 RR MT 0 0 default MT 0x0 default In this setup the radio packets are only sent once if the Acknowledgement is received 29 SATELLIN E 1915 User Guide version 1 0 7 6 Short range point to multipoint example In short range point to multipoint setup addresses can be used as a broadcast or from an application master to the application slaves and back In this setup the destination addresses are broadcast addresses and every device will receive every packet Radio modem 1 Radio modem 2 Radio modem 3 MD 0 0 default MD 0 0 default MD 0 0 default MY OxFFFF default MY OxFFFF default MY OxFFFF default DT 0x0 default RR 0x0 MT 0x0 default MT 0x0 default MT 0x0 default If the application is polling individual addresses are recommended In this setup all the application slaves will receive the data from the appli
27. g again the same signal strengths the delays are R1 ATRN 1 R2 ATRN 1 R3 ATRN 2 R2 ATRN 2 RSSI 40 RSSI 100 RSSI 40 RSSI 100 Delay59 Delay118 This time the R2 will repeatthe radio packet The delays in the example are in values for comparison only not in milliseconds There is also a random variable added for the delay if two repeaters have the same ATRN and RSSI value The real length of the delay depends on the radio packet length too The ATRN value is also used in the Repeaters or in the Repeater End Nodes to prevent the response too fast resulting in a collision With the same values the response delays would be R1 ATRN 1 R2 ATRN 1 R3 ATRN 22 R2 ATRN 22 RSSI 40 RSSI 100 RSSI 40 RSSI 100 Repeater Delay 1 Repeater Delay 59 Repeater Delay 2 Repeater Delay 118 Response Delay 3 Response Delay 79 Response Delay 5 Response Delay 148 So the ATRN value prevents the collisions from responses from any of the Repeaters or the Repeater End nodes 7 9 Long range point to point example with repeater The simplest configuration for a network with a repeater is one with addresses where every device will receive every transmission This may be an issue with some systems where the application slaves will hear transmissions from other application slaves The repeater does not take care of the collisions so the application should be polling 32 SATELLIN E 1915 User Guide
28. in flash This is caused if the modem specific power calibration data is either not present or is invalid or if none of the parameters have been modified from their default values Power levels may be incorrect 7 Default configuration parameters in flash This is caused if user modifiable parameters i e those stored by a WR command in flash are all the compiled in default values This is caused if the user configuration is found to be not present or invalid at power up and there is no custom configuration or if modifiable parameters have been modified from the compiled in defaults Modification of one or more parameters without the subsequent WR to commit the changes to flash will not deactivate this warning since it reflects the status of the parameters in flash Note that this warning does not reflect usage of the custom configuration defaults only usage of the compiled in defaults Default factory configuration parameters in flash This is caused if the factory parameters in flash are all the default values This is caused if the factory configuration is found to be not present or invalid at power up or if no factory parameters have been modified 38 SATELLIN E 1915 User Guide version 1 0 WS Sticky Warning Numbers Command The WS command reports warning numbers of all warnings active since the last use of the WS or WN command including any warnings which are currently active This command also resets all non ze
29. is made grounding the pin 6 signal SHDN The sleep mode must first be activated with ATSM setting ATSM 1 In Pin Sleep mode the PWR led is constant green and the TX led is constant red In Serial Port Sleep ATSM 2 the radio modem is in the sleep mode after a user defined period of inactivity ATST in the serial line The radio modem wakes up when there is data in the serial line The radio receiver is shut down so radio transmission will not wake the radio modem This mode is not shown in the leds In Radio Cyclic Sleep the radio modem receiver is shut down and wakes up periodically to receive radio data if there is any In this mode the Initializer of the radio packet must be set to be longer in the transmitting radio modem than the shut down period time in the receiving radio modem Therefore it is not possible to use this sleep mode with repeaters It is possible to use the pin 6 signal SHDN to wake up the radio modem from the Radio Cyclic Sleep When the radio modem is in the Cyclic Radio Sleep the mode the PWR led is constant green and the TX led is constant red ATSM 0x01 Query Set Sleep Mode 0x0 1 byte 0 Disabled 1 Pin Sleep 2 Serial Port Sleep 4 Radio Cyclic 1 second period 5 Radio Cyclic 2 second period 6 Radio Cyclic 4 second period 7 Radio Cyclic 8 second period 8 Radio Cyclic 16 second period ATST 0x02 Query Set Time before sleep for Serial Port 3 10 64 2 byte Sleep and Radio
30. lected the Acknowledgements are disabled and have to be manually enabled if the repeater mode is not more used With repeater network only one message at the time should be in the radio network The repeater has a possibility for a random delay before repeating The random delay depends on the ATRN value and the received signal strength RSSI With ATRN value it is possible to have basic level for the delay and the RSSI makes the delay different for repeaters with same With four repeaters in the same range receiving the same message with different ATRN and RSSI values the following would happen In this example it is assumed that the packet is not intended for any of the repeaters 31 SATELLIN E 1915 User Guide version 1 0 B Base R1 R2 R3 R4 Repeaters 1 2 3 4 The radio packet is first transmitted and every repeater receives it The 1 receives it with very good 40 dBm RSSI the R2 with very bad 100 dBm RSSI the R3 with very good 40 dBm RSSI and the R4 with very bad 100 dBm The delays for repeating are R1 ATRN 1 R2 ATRN 1 R3 ATRN 2 R2 ATRN 2 RSSI 40 RSSI 100 RSSI 40 RSSI 100 Delay 1 Delay 59 Delay 2 Delay 118 The R1 repeats the radio packet first time assuming the same signal strengths the values are R1 ATRN 1 R2 ATRN 1 R3 ATRN 2 R2 ATRN 2 RSSI 40 RSSI 100 RSSI 40 RSSI 100 59 Delay 2 Delay 118 The R3 will repeat the radio packet Assumin
31. ly before using the product o Warranty will be void if the product is used in any way which is in contradiction with the instructions given in this manual or if the housing of the radio modem has been opened or tampered with o The radio modem is to be used only on frequencies allocated by local authorities and without exceeding the given maximum allowed output power ratings SATEL is not responsible if any products manufactured by it are used in unlawful ways o The devices mentioned in this manual are to be used only according to the instructions described in this manual Faultless and safe operation of the devices can be guaranteed only if the transport storage operation and handling of the devices is appropriate This also applies to the maintenance of the products o TO prevent damage to both the radio modem and any terminal devices must always be switched O FF before connecting or disconnecting the serial connection cable It should be ascertained that different devices used have the same ground potential Before connecting any power cables the output voltage of the power supply should be checked SATELLINE 1915 User Guide version 1 0 TABLE OF CONTENTS IMPORTANT NOTICE 1 RESTRICTIONS ON 2252 2 PRODUCT CONFORMITY sprak onneni nannini padenada a anapa aaea aAa kaaranan inara 3 WARRANTY AN
32. mance RTS CTS line is driven low 10 ms after 6 1 4 Restoring default settings It is possible to use the ATRE command to restore the default settings If the serial port parameters have been changed the new parameters must be used in communication To save the default settings permanently ATWR must be issued ATRE Set default settings 24 SATELLIN E 1915 User Guide version 1 0 7 RADIO MODES SATELLINE 1915 has different radio modes for different needs in communication All the radio modems have always radio addresses If there is a need to transmit data to a certain radio modem the addresses can be set individually Otherwise the addresses can be broadcast addresses To increase the reliability of the communication SATELLINE 1915 has two different means to achieve it Acknowledgements and Multiple Transmits When Acknowledgements are used the transmitting radio modem waits for an Acknowledgement from the receiving radio modem and transmits again if there is no Acknowledgement There is a random delay for re transmissions if needed Acknowledgements are not used when a packet is transmitted to a broadcast address OxFFFF With Multiple Transmit every packet is sent multiple times in a row To increase the range of the radio modems repeaters can be used With repeaters Acknowledgements cannot be used To avoid collisions in the air a random delay is implemented in the repeaters However as
33. of the radio modem is thereby not required to take any special actions regarding EMC shielding of the radio modem NOTE When the PRO pin 7 of the DIN41651 16 pin connector is connected to ground the radio modem is in the Programming Mode 2 2 1 Pin configuration The pin configuration of the SATELLINE 1915 is defined in the following table The picture below indicates the order of the pins PIN 1 DIN41651 16 pin male connector of the radio modem the modem DTE connector facing the viewer 10 SATELLIN E 1915 User Guide version 1 0 Direction IN is data from DTE Data Terminal Equipment to the radio modem Direction O UT is data from the radio modem to the DTE PORT PIN TO EXPLANATION PORTRS 232 9 OUT 05 Data set ready internally connected to DTR 10 OUT 0 0 0 JRTS CMD jReadytosend BinaryCommand Mode 12 JIN TD X Jmanmtda 0 0 0 13 OUT 15 Clearto send 1 Clear isend 2 2 4 DTR Data terminal ready modem ON OFF internal pull up PINS 2 GND 520 3 JAUXIO1 0 4 JAUXIO2 4 45 X JAUXIO3 jdometconet 1 1 6 JSHDN modem power down active low internal pull up G Command Mode back up 0 intemal pull up 18 JNC pgmtcometd gt 00
34. pS JNC pnmtcomeced 116 SGND SGND Signal ground Description of pins RD Receive Data utput of the data received Data from the radio modem to the DTE TD Transmit Data Input of the data to be transmitted Data from the DTE to the radio modem CTS Clear To Send in hardware handshake RTS CMD Request To Send or Binary Command Mode The function of this line can be changed between hardware handshake RTS Binary Command Mode or no handshake default EI TO IMI Data Terminal Ready Terminal in operation When the DTR line is left unconnected the radio modem is O N If the DTR pins are connected to GND or SGND the radio modem will turn OFF DSR Data Set Ready Indicates that the radio modem is switched internally connected to the 11 SATELLIN E 1915 User Guide version 1 0 PROG Back up method for entering AT Command Mode Ground this line at start up to get to the Command Mode at 9600 bps regardless of the baud rate settings GND negative pole of the operating voltage and the signal ground SGND signal ground internally connected to GND Vb positive pole of the operating voltage NOTE GND and SGND are internally connected together 12 SATELLIN E 1915 User Guide version 1 0 3 1 LED indicators There are five LED indicators on the front panel of the radio modem and they give an indication of the status of the radio interface serial port and powe
35. r 10 0x0A 2 bytes 0x05 100 milliseconds 0x13 Mode 0x06 timeout in 100 milliseconds The value format of the AT commands can be changed between decimal or hexadecimal with units hexadecimal without units and decimal or hexadecimal without units The value is in decimal or hexadecimal depending on the command The following commands have always their response in hexadecimal ATVR Firmware Version ATHV Hardware Version ATKY AES Encryption Key Q uery Set command format 0 0x2 0xl 1 byte 02 decimal hexadecimal with units 1 forced to hexadecimal without units 2 decimal hexadecimal without units 22 SATELLIN E 1915 User Guide version 1 0 0 1 2 AT V lt enter gt Q uery Voltage 5 36 lt gt 55 lt gt 5 36 lt gt lt enter Query Source Address FFFF lt CR gt FFFF lt CR gt 65535 lt CR gt Responses in different formats AT BIN Default Q uery Set command format 0 0x2 0xl 1 byte 0 decimal hexadecimal with units 1 forced to hexadecimal without units 2 decimal hexadecimal without units 6 1 2 Back up method for entering the Command Mode If the baud rate settings of the serial port have been changed and they are not known the back up method for entering the Command Mode can be used Before powering up the radio modem ground the PRO G line pin 7 When the radio modem is powered up it will enter the Comm
36. r the current packet is not sent to the serial line or repeated The Packet Identifier is used with Acknowledgements to separate which packet has been acknowledged The User Data field has the data the user wants to transmit The CRC 16 is used to check the correctness of the packet Received packets with erroneous CRC 16 are discarded BIN Default 0x11 Q uery Set Hopping Pattern os ATID 0x27 Query Set Vendor ID 0 0 7 03332 2 26 SATELLIN E 1915 User Guide version 1 0 7 2 Addressing SATELLINE 1915 has three settings for addresses Destination Address ATDT Source Address ATM Y and Address Mask When the radio modem receives a radio packet the Destination Address is first matched with Address Mask The matching is a bitwise binary AN Ding If the result is the same as the Address Mask the received packet is sent to the serial port Next the receiving packet is matched to the receiving radio modems Source Address ATM Y If the result of the matching is Source Address of the receiving radio modem the received packet is for this receiver and sent to the serial port If the Destination Address of the received packet does not match Mask or Source address it is discarded The Mask and the Source address are off when they are in the default value OxFFFF Examples DT Destination Address in the packet This is the setting in the transmitting radio modem MK Address Mask setting in
37. r supply LED Indication OFF Red Green TX Radio transmission signal Transmission Pin Sleep Constant red in Pin Sleep mode TD line status Radio reception No data Reception RD RD line status Dec O PWR Power To power or DTR line is grounded ON Description of the LED indicators TX indicates that the radio modem is sending data via the antenna connector If the Pin Sleep mode is enabled in the settings and the SHDN line is grounded the radio modem will be in Pin Sleep mode and the TX is constant red TD indicates that the radio modem is receiving data via the serial port TD line pin 12 RX indicates that the radio modem is receiving data via the antenna connector RD indicates that the radio modem is sending data via the serial port RD line pin 10 PWR indicates the power is connected If the DTR line is grounded the radio modem is O FF 13 SATELLIN E 1915 User Guide version 1 0 4 SERIAL INTERFACE 4 1 RS 232 RS 232 standard defines the method of serial data transfer between a computer and its peripherals The definition includes both the interface type and signal levels Most computers and peripherals contain one or more RS 232 type serial ports The RS 232 standard uses transmission lines in which each single signal line level is referenced to a common ground level RS 232 has been designed to be use in serial transfer of data in cases where the distance betw
38. ramming language or reverse engineering for any intent is forbidden without the written consent of SATEL SATEL PRO DUCTS HAVE NOT BEEN DESIGNED INTENDED NOR INSPECTED TO BE USED IN ANY LIFE SUPPO RT RELATED DEVICE OR SYSTEM RELATED FUNCTION NORASA PART OF ANY OTHER CRITICAL SYSTEM AND ARE GRANTED NO FUNCTIONAL WARRANTY IF THEY ARE USED IN ANY OF THE APPLICATIONS MENTIONED Salo FINLAND 2008 SATELLIN E 1915 User Guide version 1 0 RESTRICTIONS ON USE WARNING This equipment has been is approved only for mobile and base station transmitting devices Antenna s used for this transmitter must be installed to provide a separation distance of atleast 30 cm from all persons and must not be co located or operating in conjunction with any other antenna or transmitter Contains FCC ID OUR 9XTEND The enclosed device complies with the part 15 of the FCC rules O peration is subject to the following two conditions i this device may not cause harmful interference and ii this device must accept any interference received including interference that may cause undesired operation SATELLIN E 1915 User Guide version 1 0 PRODUCT CONFORMITY Hereby SATEL Oy declares that SATELLINE 1915 radio modem is in compliance with the essential requirements of FCC Part 15 USA IC Industry Canada and C TICK Australia regulations SATELLIN E 1915 User Guide version 1 0 WARRANTY AND SAFETY INSTRUCTIONS Read these safety instructions careful
39. ro warning counts except for warnings that are presently active which are set to 1 AT BIN 0x36 Received Signal Strength 120 ATERT OOF Eu ces ATGD Receive G ood Count 2 byte 0x10 Ambient Power Single Channel lbye 0 0 Restore Defaults E dem pm 5 ATRM AmbientPower All Channels 260 05 SerialNumber igh be ATL 026 Serial Numbertow ze 098 Board be Transmit Enor Count _ o ATM Firmware Verson Verbose Active Warming Numbers 0 WWW Aws Sid WamingNumbes 39 SATELLINE 1915 User Guide version 1 0 LOAPPEN DIX ASCII CHARACTER TABLE 4 amp OTD gt ONK MK lt MMOAWPFWOAANAADAWNAWNHeY OT 1 KEK KC Pe Be lt gt B D E F G H I J K L M N Q R 5 T U 40
40. t buffer limit for 0 buffer Input buffer 1 byte 0x24 handshaking size minus 17 size minus 17 uery Set software handshake 0 0 1 0x0 1 byte XO N XO FF 0 Disabled 1 Enabled uery Set RTS line behavior 0 0x2 0x0 1 byte 0 Disabled 1 Enable Binary Commands 2 Enable RTS affects immediately Q uery Set CTS line behavior 0 0x4 0x0 1 byte 0 Enable CTS 2 CTS line always high 4 CTS line always low 16 SATELLIN E 1915 User Guide version 1 0 4 4 Serial interface packetization The radio modem will start the radio transmission when the following criteria is met 1 After receiving more than 2048 bytes default value for ATRB from the serial line OR 2 After receiving at least 1 byte AND seeing 3 characters default value for ATRO time of silence in the serial line If the packetization time out has been set to 0 then ATRB bytes must be received in the serial line before beginning transmission The value for the ATRB has to be equal or smaller than the value for the maximum radio packet ATPK default 0x800 AT BIN Default 0x20 Q uery Set serial interface x ATPK 0x800 2 Ee packetization byte threshold max 0x800 ATRO 0x21 Q uery Set serial interface 0 2 packetization timeout characters 17 SATELLIN E 1915 User Guide version 1 0 5 RF INTERFACE The antenna connector type is a RPSMA male with an impedance of 50 The user can
41. the receiving radio modem MY Source Address setting in the receiving radio modem i i 0 00000 mode Using the Address Mask it is possible to build network with different sub networks if needed In the sniffer mode when the Address Mask is set to 0 all data is received but no Acknowledgements are sent even if they are set If the Acknowledgements are in use in the transmitting radio modem the data will be seen as many times as is the Retry ATRR value when the transmitting radio modem transmits the data again AT BIN Default ATDT 0x00 Query SetDestination Address 0 OXFFFF Jo 2 ATMK 0x12 Query Set Address M ask 0 OxFFFF OxFFFF 2 Query Set Source Address 0 OxFFFF OXFFFF 7 2 1 API mode It is possible to transmit and receive packets to the radio modem in serial line using API Application Packet Interface packet format In this format it is possible to set the destination 27 SATELLIN E 1915 User Guide version 1 0 address of the packet The packets from the radio modem serial line include the information of the success of the packet transmission and signal strength of the received packets Ask more details for the implementation from SATEL O y or its local distributors worldwide 7 3 Multiple Transmit To increase the reliability SATELLINE 1915 radio modem has a multiple transmit mode In this mode every packet from the seri
42. version 1 0 Multiple Transmits can be used for reliability but not the Acknowledgements this simple application Random values need not to be set With two repeaters the following settings are recommended eee end SD MY20d MY2020 03 In this setup all the radio modems have random repeat and response delays on 7 10 Long range point to multipoint example with repeater For master slave polling applications it is best to use system with broadcast destination address in the radio module connected to the application master and destination addresses to application master in radio modems connected to application slaves Otherwise the configuration is the same as in the previous example End node Repeater application slave End node application master application slave MD 0x6 repeater end MD 0 5 repeater MD 0x6 repeater end 0 0 1 0 2 0x3 If the application has more than five radio modems value 2 is recommended 33 SATELLIN E 1915 User Guide version 1 0 8 SLEEP MODES The SATELLINE 1915 has three different sleep modes to be used for saving power The sleep modes are Pin Sleep Serial Port Sleep and Radio Cyclic Sleep For the maximum power saving the radio modem can be completely shut down grounding the pin 14 signal DTR In Pin Sleep the radio modem receiver is shut down for minimum amount of power The shutting down
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