I have an issue with the calibration steps for the 1176.
Under "Discrete Meter Circuit/Null Adjust" it says:
1. Zero the compressors "GR" meter with the R71 zero adjust pot.
Thats fine, it works. However for step 2:
2. Adjust pot R75 (null adjust) for 0.0 Volts across R74. It is TP2 place!
it is always 0.0 Volts across R74 no matter which way i turn R75. Turning R75 only changes the VU meter. So I set R71 and R75 so that the VU meter says 0 dB, no need for step 3. Is this correct?
The issue continues during the next step "Reduction Meter Tracking Adjustment". After switching JumperT1 to ON
"Your meter will most likely drop. Don’t worry! Set it back to zero by using the R71 zero adjust pot."
The meter drops, but turning R71 changes nothing on the VU meter. That can't be correct?
Doing the rest of the calibration changes nothing on the VU meter. I have no idea where the error is. Help?!
