TR2I-458-5 Datasheet, PDF (6/11 Pages) Radiometrix Ltd – Narrow Band FM Multi-channel UHF Transceiver

TR2M serial configuration commands
2400 baud RS232. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits, No flow control
SINGLE nnnnn
Set value of N for single channel operation
GOCHAN xx
Serial select of channel xx (0 to 127)
LOADMX xx
Set highest permitted (serial selected) channel xx (others default to ch0)
LOAD aa nnnnn
Set value of N for channel aa (channels 0 to 15)
LOADTB nnnnn
Set value of N for channel 16 (channels 17 to 127 then in sequence)
RVALUE rrrr
Enter value for R register
SETPAR
Channel selected by 3 bit parallel input (0 to 7). Disable modem
SETSER
Channel selected by most recent 'gochan' operation
SETMOD
Enable internal modem. Frequency selected by most recent 'gochan' or
'single'
GOTEST
250Hz test tone transmission
<cr>
Process entry
/
Clear all buffers
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)
N _TX
=
f _RF
f _{Channelspacing}
=
433.050MHz
25kHz
= 17322
R=
f_TCXO
f_{channelspacing}
=
13MHz
25kHz
,
So
R=520
Channel
Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
F max
433MHz band
433.050
433.075
433.100
433.125
433.150
433.175
433.200
433.225
433.250
433.275
433.300
433.325
433.350
433.375
433.400
433.425
433.450
434.775
N value for TX
/LOAD00 17322
/LOAD01 17323
/LOAD02 17324
/LOAD03 17325
/LOAD04 17326
/LOAD05 17327
/LOAD06 17328
/LOAD07 17329
/LOAD08 17330
/LOAD09 17331
/LOAD10 17332
/LOAD11 17333
/LOAD12 17334
/LOAD13 17335
/LOAD14 17336
/LOAD15 17337
/LOADTB 17338
/LOADMX 69
458MHz band
458.525
458.550
458.575
458.600
458.625
458.650
458.675
458.700
458.725
458.750
458.775
458.800
458.825
458.850
458.875
458.900
458.925
459.100
N value for TX
/LOAD00 18341
/LOAD01 18342
/LOAD02 18343
/LOAD03 18344
/LOAD04 18345
/LOAD05 18346
/LOAD06 18347
/LOAD07 18348
/LOAD08 18349
/LOAD09 18350
/LOAD10 18351
/LOAD11 18352
/LOAD12 18353
/LOAD13 18354
/LOAD14 18355
/LOAD15 18356
/LOADTB 18357
/LOADMX 23
25kHz
433.05
434.79
433MHz Band
458MHz
Band
459.1
461.675
Figure 6: Maximum regulatory and user accessible sequential channels
Radiometrix Ltd
TR2M Data Sheet
page 6