Linx Technologies TRM-915-DTS - Manual (Page 12)

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DTS Series RF Channels
Channel LP Mode DTS Mode Channel LP Mode DTS Mode
0 902.271 902.971 42 914.900 N/A
1 902.572 903.723 43 915.201 N/A
2 902.872 904.475 44 915.501 N/A
3 903.173 905.226 45 915.802 N/A
4 903.474 905.978 46 916.103 N/A
5 903.774 906.730 47 916.403 N/A
6 904.075 907.482 48 916.704 N/A
7 904.376 908.234 49 917.005 N/A
8 904.677 908.986 50 917.306 N/A
9 904.977 909.737 51 917.606 N/A
10 905.278 910.489 52 917.907 N/A
11 905.579 911.241 53 918.208 N/A
12 905.879 911.993 54 918.508 N/A
13 906.180 912.745 55 918.809 N/A
14 906.481 913.496 56 919.110 N/A
15 906.781 914.248 57 919.410 N/A
16 907.082 915.000 58 919.711 N/A
17 907.383 915.752 59 920.012 N/A
18 907.683 916.504 60 920.312 N/A
19 907.984 917.255 61 920.613 N/A
20 908.285 918.007 62 920.914 N/A
21 908.586 918.759 63 921.215 N/A
22 908.886 919.511 64 921.515 N/A
23 909.187 920.263 65 921.816 N/A
24 909.488 921.015 66 922.117 N/A
25 909.788 921.766 67 922.417 N/A
26 910.089 922.518 68 922.718 N/A
27 910.390 923.270 69 923.019 N/A
28 910.690 924.022 70 923.319 N/A
29 910.991 924.774 71 923.620 N/A
30 911.292 925.525 72 923.921 N/A
31 911.592 926.277 73 924.221 N/A
32 911.893 N/A 74 924.522 N/A
33 912.194 N/A 75 924.823 N/A
34 912.494 N/A 76 925.123 N/A
35 912.795 N/A 77 925.424 N/A
36 913.096 N/A 78 925.725 N/A
37 913.397 N/A 79 926.026 N/A
38 913.697 N/A 80 926.326 N/A
39 913.998 N/A 81 926.627 N/A
40 914.299 N/A 82 926.928 N/A
41 914.599 N/A 83 927.228 N/A
Figure 19: DTS Series RF Channel Numbers and Frequencies
Channel Settings - Address = 0x4B, 0x4C; NV Address = 0x00, 0x01
The DTS Series supports 32 channels (0 – 31) in DTS mode and 83
channels (1 – 83) in low power mode. LP channel 0 is not available in the
FCC pre-certified or all Brazil versions of the module. A value of zero in the
channel register selects channel 1.
Anatel in Brazil restricts use of the 907 to 915MHz band so the Brazilian
version aliases channels in this range to channels outside the band.
DTS Mode
Channels 5 – 11 are aliased to channel 4
Channels 12 – 17 are aliased to channel 18
LP Mode
Channels 14 – 29 are aliased to channel 13
Channels 30 – 44 are aliased to channel 45
This limits the number of unique channels to 19 in DTS mode and 51 in LP
mode for the Brazilian version. All non-aliased channels are compatible with
their North American counterparts.
Transmit and receive channels are set in regTXCHAN (addr 0x4B) and
regRXCHAN (addr 0x4C) respectively. The non-volatile defaults are set in
regNVTXCHAN (addr 0x00) and regNVRXCHAN (addr 0x01) respectively.
The channel frequencies and their decimal values are shown in Figure 19.
All modules in a network must be in the same mode (LP or DTS) and must
have the same transmit and receive channels programmed in order to
communicate properly.
Note: If the module is set to different transmit and receive channels then
the CSMA algorithm will not work.
Figure 18: Channel Settings Command and Response
Channel Settings
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE ADDR 0x06 ADDR CHAN
Write Command
Header Size Address Value
0xFF 0x02 ADDR CHAN