SoundPals User's Guide
ADC-20 • 27
ADC-20 Troubleshooting
The table below lists several ADC-20 problems, and provides a variety
of “checklist” procedures designed to solve them.
Problem
Procedure
No signal at
either AES
output.
•
Is power applied? Check power LED
and power supply.
No audio on
AES output.
•
Is input connected correctly? Check
+
ve
to pin 2,
−
ve
or ground to pin 3.
Front panel
meters not
registering.
•
Adjust input levels.
Ext Ref
indicator not lit
on front panel.
•
Is AES reference connected? Check
that an AES signal is applied to the
reference input if you want
synchronized sampling.
•
Is the reference input a valid AES
signal?
•
Is the reference input sampling
frequency between 30 kHz and 50
kHz?
NOTE
Please contact the GPS factory if the problem still
exists after completing the above procedures.
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