TB7100 to RB-STM32-DVM Setup
Setting up the TB7100 to use the RB-STM32-DVM
SK2HG's Tait TB7100 as DMR repeater:
Tap Out Type specifies the type of tap-out junction. The options available depend
on the Tap Out point selected.
C - Bypass Out: all audio is diverted out at this tap point.
D - Split: a sub-set of audio samples is detected and diverted out at this tap point.
E- Splice: audio processing is inserted with the signal path at this tap point.
The tap out type is the same as C - Bypass Out.
(Note: If E - Splice is selected for a tap out type, the Tap In point must be at the same location,
and the Tap In Type also set to E - Splice.)
- PSD: Peak System Deviation
- LPF: Low Pass Filter
- HPF: High Pass Filter
- ALC: Auto Level Controlled
Programming the TB7100 for interfacing to RB-STM32-DVM
Programming in RX Switch posotion:
Programmable IO Digital
RX Programmable IO Audio
Programming in TX Switch posotion:
TX Radio Intergration
TX Programmable IO Digital
TX Programmable IO Audio
With this configuration the PTT pin will be configured as alternate output with the Tait programming application
- 6 RSSI (optionnal for RX way)
- 7 Audio Input (TX way)
- 12 PTT (TX way) the PTT pin will be configured as alternate output with the Tait programming application
- 13 Audio Output (RX way)
- 15 Ground
SK2HG TB7100 Modem Settings
The TB7100 has DSPs in both the TX and RX path so the signals are delayed.
Before struggeling with the RX path I decide to open the Squelch as the Audio
output was squelched. It had to be done with the Tait calibration program
(TB71_CAL) not with the normal CPS program (TB71_XPA), by setting a low value
for squelch opening, I think I put -136 dBm there.
SK2HG - Tait TB7100 as DMR repeater:
Glenn Lyons VK4PK
Ver:gnl20220203 - pre published v0.9