Start with the lower PCB (TRANSIENT):-

1. Patch [END] to [TRIG]
2. Monitor [DC]
3. Adjust [RISE] and [FALL] to produce a triangle wave shape running at about 100Hz
4. Adjust P101 so that [DC] output is 5V pk-pk

Then the upper PCB (TRANSIENT):-

1. Patch [END] to [TRIG]
2. Monitor [DC]
3. Adjust [RISE] and [FALL] to produce a triangle wave shape running at about 100Hz
4. Adjust P101 so that [DC] output is 5V pk-pk