DIOT system power sequencing

[gkasprow]

Measure how individual modules wake up. The time delay for each module depends on GA3..0 signals from the backplane.
We want to make sure that all works as designed.
Follow the steps:

1. Make an external connection from the P3V3 rail (L3 terminal) to the oscilloscope for each board. Add a 100..500Ohm resistor close to the source in series to prevent damage when shorting the wires
2. connect 4 4-channel oscilloscope to the outputs of cards in slots 1..4
3. Trigger the scope by rising edge of the signal on J3 of the first slot, acquire plots and time intervals for each slot
4. Connect the 4-channel oscilloscope to the outputs of cards in slots 1, 5, 6, 7
5. Trigger the scope by rising edge of the signal on J3 of the first slo,t acquire plots and time intervals for each slot
6. Connect the 4-channel oscilloscope to the outputs of cards in slots 1, 7, 8, 9
7. Trigger the scope by rising edge of the signal on J3 of the first slo,t acquire plots and time intervals for each slot

Alternatively, you can use 2 or 3 scopes in parallel.

[gkasprow]

@knorowski