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2.5.

Frequencies

The RV-M5-M MURS modem has five user selectable channels. The channel
is selected with the

ATHP

command. The RV-M5-M modem is factory-set to

these five channels, and the modem cannot be programmed to operate on
any frequency other than these five.

1

151.820 MHz

2

151.880 MHz

3

151.940 MHz

4

154.570 MHz

5

154.600 MHz

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Содержание FireLine MURS band

Страница 1: ...FireLine MURS band Data Radio Modem Technical Manual Version D2 June 2006 Raveon Technologies Corporation 2722 Loker Avenue West Suite D Carlsbad CA 92010 www raveontech com...

Страница 2: ...Packet Mode 12 4 1 Setup 13 4 2 Selecting Channels 14 4 3 Data Transmission 14 Serial Port Baud Rate 14 Flow Control 15 Packet Size 15 Key On_Data 15 Busy Channel Lock Out 15 4 4 Data Reception 16 4...

Страница 3: ...8 5 TX Modulation Balance 38 8 6 RX DC Offset Verification 38 8 7 RX Carrier Detect 39 8 8 MURS Operation 39 9 SkyLine Compatibility 40 9 1 General 40 9 2 Configuring FireLine to Communicate with a S...

Страница 4: ...to entering any area with a potentially explosive atmosphere Do not install this product for use in areas with potentially explosive atmospheres Do not remove install or charge batteries in such area...

Страница 5: ...ion the antenna must be located at least the following range away from rear seat passengers and bystanders in order to comply with the FCC RF exposure requirements For Model RV M5 M Radiated frequency...

Страница 6: ...operation guidelines described in this manual Proper operation of this radio device according to the instructions in this publication will result in user exposure substantially below the FCC recommen...

Страница 7: ...t parameters within the modem may be re configured to optimize it for specialized operations extended range or higher data throughput 1 6 Features High speed over the air data rates 19200bps in 25kHz...

Страница 8: ...erational 500mS FCC ID Model RV M5 M SRS RV M5 M 2 2 Transmitter Maximum RF power output 2 0 watts Maximum duty cycle 20 at full power Maximum transmit frequency deviation 2 25kHz Occupied bandwidth 1...

Страница 9: ...hannels The channel is selected with the ATHP command The RV M5 M modem is factory set to these five channels and the modem cannot be programmed to operate on any frequency other than these five 1 151...

Страница 10: ...R This LED does a short blink once every two seconds indicating to the user that the power to the modem is ON and the modem is working When the modem is in the command mode this LED will blink on and...

Страница 11: ...m is powered on 7 RTS in Request to send Used to stop start the flow of data coming out of the modem TxD pin 0 OK to send 1 don t send Leave disconnected if not used 8 CTS out Clear to send Used to st...

Страница 12: ...red error free 3 Addressing Packetized operation allows for a more versatile network architecture with source destination and network addresses FireLine uses a 16 bit address to identify data packets...

Страница 13: ...nd place is at high above obstructions as possible 3 Connect a computer terminal or PC computer running HyperTerminal to the 9 pin I O connector The factory default serial ports settings are 9600 bps...

Страница 14: ...e channel frequency to your specific frequency and they will be ready to work on your channel 4 2 Selecting Channels The RV M5 M MURS Band FireLine modem has 5 channels in its memory bank A channel is...

Страница 15: ...with the FireLine it may be possible to overflow the internal data buffer To ensure the transmit buffer does not overflow enable and use hardware flow control Hardware flow control is enabled with the...

Страница 16: ...re information about choosing the over the air data rate 4 5 Addressing Packetized Mode only Addressing Basics One of the more powerful aspects of the FireLine modem is its addressing scheme Incorpora...

Страница 17: ...n the system with the same Unit Address and destination address From the factory these are both set to 1234 and thus all modems can communicate with all other modems using the address 1234 The advanta...

Страница 18: ...e system the Address Mask should stay set to FFFF Only in systems where some modems should only talk to certain other modems might you want to change the address mask Whenever data is received over th...

Страница 19: ...0 123F Sending to Destination Address 1236 Receiving FireLine Unit Address 1234 Receiving FireLine Address Mask FFF0 Result Data will be received 1236 ANDed with FFF0 is 1230 1234 ANDed with FFF0 is 1...

Страница 20: ...e to transmit ACKs with the ATAK 1 command This will cause the modem to send an ACK anytime it receives data from another modem Note If the destination address was a broadcast FFFF FFxx or xxFF it wil...

Страница 21: ...key when data enters the modem and there is no need to assert any control lines It will automatically de key when there is no more data to send Figure 3 illustrates the difference between the Packet M...

Страница 22: ...sy the modem should be operated in the Packet Mode instead of Streaming mode In Packet Mode data is always first checked for bit errors and never outputted if it detects any errors The end of a transm...

Страница 23: ...er To ensure the transmit buffer does not overflow enable and use hardware flow control Hardware flow control is enabled with the ATCH 1 command Note that the FireLine modem will always indicate the s...

Страница 24: ...dem Use a good antenna and place is at as high above obstructions as possible 4 A separation distance of at least 20 centimeters must be maintained between the transmitter s radiating structures and t...

Страница 25: ...e modem there must be a pause in the data stream before the as well as a pause after the is sent If either pause is missing the modem will not enter the command mode Using serial communications softwa...

Страница 26: ...A CR LF CD ASCII 0D LF ASCII 0A An O K CR and LF sequence For example if the user enters the command to read the FireLine s modem address and its address was 1234 the user would issue the following c...

Страница 27: ...wered down and back up the modem will operate with the previously saved settings 3 Time Out After a pre set amount of time 60 seconds is the factory default time the modem will automatically exit the...

Страница 28: ...figure Hardware Flow Control Enable 1 or disable 0 flow control When enabled the modem will monitor the RTS line and if it is negated stop sending data out the serial port If disabled the modem will i...

Страница 29: ...tput signal CD may be RF carrier detect or modem data detect Range 0 2 2 Always assert CD 1 Data CD 0 RF CD 1 R2 Over The Air bit rate This is the data rate the radio uses to send data over the air Al...

Страница 30: ...It saves all parameters except the frequency The frequency is automatically saved when an ATFT ATFR or ATFX command is executed none None TD Transmit Random Data When issued the modem will begin send...

Страница 31: ...s 4800 baud for narrow band versions and 9600 baud for wide band versions The maximum over the air baud rate for a narrow band radio 12 5kHz channel spacing is 9600bps Due to IF filter limitations the...

Страница 32: ...croll the reading until another character comes in the serial port Packet Counter The packet counter mode will output packet count statistics once per minute It will output the number of packets recei...

Страница 33: ...maintains All statistics start counting at 0 The ATST 1 command can be used to reset all statistics back to 0 except the run time timers Other operation and configuration statistics are available usin...

Страница 34: ...ear 7 5 ATST2 Command The ATST2 command will return additional lower level statistics RF FIFO overruns nnn number of times the modem was too busy to receive data over the air Wrong address nnn packets...

Страница 35: ...xx is the status interval in minutes The interval may be between 1minute an 65000 minutes 45 days The general format of the message that the modem will send is an ASCII STX character 02 BEGIN STATUS A...

Страница 36: ...the status information is sent to is set with the ATMA xxxx command Whenever a status transmission is sent the TO ID of the transmission is the address set using the ATMA command This allows the syste...

Страница 37: ...ould like to store Once you read a register using an ATRx command you may modify its value by entering a U for up or a D for down U or D will change the value by one Use this trick carefully because i...

Страница 38: ...de emphasis 2 Transmit random data with the FireLine using the ATDT 1 command This command will cause the FireLine to automatically key up and send random data for one minute 3 Verify the DC center of...

Страница 39: ...tone 1 5kHz deviation on the receive frequency Connect the signal generator to the antenna input Turn the RF level off 2 Watch the RSSI value by issuing the AT 5 command The current reading will be s...

Страница 40: ...transmission MYID 1234 The MYID of the FireLine modem is set with the ATMY command or the MYID command The default MYID of the SkyLine was 1234 TOID FFFF The TOID of the FireLine modem is set with the...

Страница 41: ...ATR2 5 Set the over the air baud rate to 9600 baud ATR0 180 Set the peak deviation to 3 0kHz This setting will probably have to adjusted to achieve the exact deviation ATR1 1 Use data CD ATR5 9 SkyLi...

Страница 42: ...tched telephone network 47 CFR 95 1313 To increase your communications range located the antenna high as needed practical safe and allowed by your license On fixed base station applications you may ut...

Страница 43: ...Company Confidential 43 Raveon Technologies Corp...

Страница 44: ...o ON 5 0V DC to radio Digital output 10mA maximum current source 6 Transmit modulation 2 5V DC RX 2 5V DC with 2V p p Gaussian filtered 9600bps data during transmit 7 Synthesizer lock detect input Low...

Страница 45: ...the following lines Data Terminal Ready reply that it is OK to send Data Set Ready asserted by the modem RTS On this line the DTE will send a signal when it wants to receive data from the FireLine mod...

Страница 46: ...her RF modem signal is detected or always assert it The operation of this line is configured with the ATR1 command The default is 1 asserts when FireLine data is detected on the radio receiver DTR Thi...

Страница 47: ...Simple null modem without handshaking DB 9 Female shown Same wiring for male to male cable Connector 1 Connector 2 Function 2 3 Rx Tx 3 2 Tx Rx 5 5 Signal ground 12 3 Compatibility issues There is a p...

Страница 48: ...lder way of flow control to take place The main incompatibility is the cross connection of the RTS and CTS pins Originally these pins are used for a question answer type of flow control When the full...

Страница 49: ...ds and the modem may simply be waiting a long time Solution 3 Verify that the radio channel is clear or BCL is off The ATBC 1 command enables Busy Channel Lockout If BCL is on the modem will not trans...

Страница 50: ...may not support it Disable hardware handshaking on your terminal program to verify this is the issue Symptom Modem appears dead Solution 1 Verify the power is on When the modem has good DC power the P...

Страница 51: ...Company Confidential 51 Raveon Technologies Corp 14 Mechanical...

Страница 52: ...EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS OR IMPLIED WARRANTIES ALL IMPLIED...

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