To Troubleshoot Source And Calibrator Out Failures - Agilent Technologies 89410A Service Manual

Troubleshooting the Analyzer

To troubleshoot source and calibrator out failures

To troubleshoot source and calibrator out failures
Use this test when the analog source or calibrator is suspected of failing
and all self tests listed before the ADC in the Self-Test Troubleshooting
Guide on
1
1-62
page 1-32 passed.
Check the sine wave output.
a Set the power switch to on ( l ).
b
Using a BNC cable, connect an oscilloscope to the SOURCE
output.
c Set the oscilloscope as follows:
CH1 V/div
Input Impedance
CH1 Coupling
Probe Atten
Display Mode
Time/div
Trigger
Trig Src
Trigger Level
d Press the following keys:
]
[System Utility
[
auto cal off]
[more cal setup ]
[ auto zero cal off]
]
[Source
[
source on]
]
[level
1
[ V ]
e The oscilloscope should display a 1 MHz, 2 Vp-p sine wave with no
dc offset. If the signal is incorrect, go to Step 7.
This is only a quick check of the source sine wave. If the source is
suspected of failing at a specific frequency or amplitude, check
400 mV/div
Ω
50
dc
1
Real Time
200 ns/div
Trg'd Sweep
Chan1
0 V