Service manual

Troubleshooting
Revised 2/18/05 6-7
Amplifier Test (VikingQuest)
The VikingQuest Amplifier Test requires
you to jumper a calibration signal from the
base unit’s Calibration Out connector to an
amplifier channel’s -, + and common inputs
using a special loop-back calibration cable
(P/N 085-420401).
The Diagnostic software generates a square wave
calibration signal of +1V, 1ms duration with a baseline
at 0V.
When you press the Start button, the software acquires
data and looks for an ADC count of 6553 +/-6%. If the
count is within range, the software displays a green
status box to signify the calibration test passed. If the
test fails, software displays a red status box.
You must repeat the test for each amplifier channel and
press the Pass, Fail, or Cancel button to exit the test
.
VikingQuest Amplifier Test and Diagnostic Screen