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Troubleshooting the Analyzer
To troubleshoot input and ADC failures
To keep the sine wave displayed, adjust the oscilloscope’s trigger
level while varying the trigger offset value.
d If the trigger offset function is incorrect, the A10 Analog Input
assembly is probably faulty.
e Reconnect A10 J3 to A36 J5.
f Disconnect the synthesizer from CHANNEL 1.
4 Check the analog source to input path.
a Press the following keys:
[Preset]
[
Source]
[
source on]
[level
]
0
[
dBm]
[
System Utility]
[
auto cal off]
[more cal setup
]
[
auto zero cal off]
[Return
]
[
more]
[
diagnostics]
[
service functions]
[
special test modes]
[
input]
[
source]
b Connect the oscilloscope to A10 J2 using the BNC(m)-to-SMB(f)
cable.
c The oscilloscope should display a 130 ±13 mVp-p sine wave.
d If the signal is correct, go to Step 5.
e Place the analyzer on the side closest to the display.
f Remove the bottom cover.
g Set the oscilloscope as follows:
CH1 V/div 100 mV/div
Input Impedance 1 M
Ω
CH1 Coupling dc
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