Well good luck - keep us informed. For more information on proper drive, you could look at the schematic of the DP attenuator driver - or masure what the 8566 does - I believe it is a pulse from the CPU but not certain.
Cheers!
Bruce
Cheers!
Bruce
Quoting bagojfalvibagoj@...:
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I ordered a breadboard overnight. Never have one when you need it.
I have a frightening suspicion, which is that this attenuator works perfectly I just couldn't drive it properly. I hope at least I didn't make it worse.
Now I kinda understand what the circuit is doing. Hopefully tomorrow I can check properly.
The original symptom was about 50dB loss on the input in both frequency modes, so that makes it either the connector, cables, the attenuator or the switch.
I took the attenuator out first as I read that is likely to have issues and since I couldn't turn on 40dB attn on it I concluded this is the culprit.
But maybe not...
Rabbit holes rabbit holes everywhere.
