tr1m-151-5 Radiometrix Ltd, tr1m-151-5 Datasheet - Page 4

• Manufacturer Part Number: tr1m-151-5
• Description: Multinarrow Band Fm Multi-channel Vhf Transceiver
• Manufacturer: Radiometrix Ltd

TR1M serial configuration commands
2400 baud RS232. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits, No flow control
SINGLE
GOCHAN xx
LOADMX xx
LOAD aa
LOADTB
RVALUE rrrr
SETPAR
SETSER
SETMOD
OFFSET ooo
<cr>
/
xx = channel number from 00 to 127
aa = two digit channel number from 00 to 15
nnnnn = synthesizer N register value, (up to 65535)
rrrr = synthesizer R register value, (up to 16383)
000 = frequency offset
Notes:
Radiometrix Ltd
N
1. A pause of at least 50ms must be allowed between command strings (EEPROM programming time)
2. /SETPAR command should be issued at the end of channel programming to put the module back into
3. In 173MHz band, channel 4- 7 (173.225MHz) is allocated specifically for fixed alarm and should not
4. User can modify the frequency table of 128 channels to any desired frequency by changing N, R
5. All other frequency, power, analogue input gain and automatic noise squelching adjustment will be



10
SINGLE mode does not store the N value in EEPROM. Therefore the unit is inoperative after a
power down until either another valid SINGLE command is received, or mode is changed by a
GOCHAN, SETPAR or SETSER command. SINGLE mode is intended for frequency agile
applications.
parallel frequency select mode
be used for general purpose applications.
values of synthesizer within 1.5MHz of factory set Channel 0 frequency subject to the Radio
Regulatory Band Allocation in the country of intended use.
treated as custom variants of the module to be set by factory.
f
Mhz
R
RF
nnnnn
nnnnn
nnnnn



173
25
.
200
kHz
MHz
Set value of N for single channel operation
Serial select of channel xx (0 to 127)
Set highest permitted (serial selected) channel xx (others default to ch0)
Set value of N for channel aa (channels 0 to 15)
Set value of N for channel 16 (channels 17 to 127 then in sequence)
Enter value for R register
Channel selected by 3 bit parallel input (0 to 7). Disable modem
Channel selected by most recent 'gochan' operation
Enable internal modem. Frequency selected by most recent 'gochan' or
'single'
Set receive frequency offset (for 25KHz this is 856)
Process entry
Clear all buffers
6928
TR1M Data Sheet
R
f
channelspa
f
TCXO
cing
10
25
MHz
kHz
, So R=400
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