camarada78
Well-known member
I have a focusrite ADC card in my bench that is not sending signal out from its optical outputs. Both of them have zero output and no light is emitted through the adat cable.
After some measurements I have a suspect: the optical converters. A Wavefront/Alesis AL1401AG ic
- the powersupply is ok, all voltages are correct all around the board.
- My scope do catch digital signals on the IC input. Which is expected.
- also the internal clock is outputing a regular pulse, which is also expected.
- I dont have an external clock to test (would a signal generator work as clock generator for audio devices?)
What is the signal that i should have on the output of the IC? I imagine that it should also be a pulsating digital out.
What is weird is that both ICs are bad, because both outputs are bad, which is a little unusual but not impossible.
I cant share the ADC schematic due to a NDA.
any tips would be welcomed. have a good day
Leandro
After some measurements I have a suspect: the optical converters. A Wavefront/Alesis AL1401AG ic
- the powersupply is ok, all voltages are correct all around the board.
- My scope do catch digital signals on the IC input. Which is expected.
- also the internal clock is outputing a regular pulse, which is also expected.
- I dont have an external clock to test (would a signal generator work as clock generator for audio devices?)
What is the signal that i should have on the output of the IC? I imagine that it should also be a pulsating digital out.
What is weird is that both ICs are bad, because both outputs are bad, which is a little unusual but not impossible.
I cant share the ADC schematic due to a NDA.
any tips would be welcomed. have a good day
Leandro