Agilent Technologies 89410A - Page 96

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Troubleshooting the Analyzer
To troubleshoot two channel analyzer failures
4 Check the analog source to input paths.
a Press the following keys:
[
Preset]
[
Source]
[source
on]
[
level]
0
[
dBm]
[
System Utility]
[more cal setup]
[
auto zero cal off]
[
Return]
[
more]
[
diagnostics]
[
service functions]
[
special test modes]
[
input]
[
channel 1 source]
b Using a BNC(m)-to-SMB(f) cable, connect the oscilloscope to
channel 1 A10 J2.
The oscilloscope should display a 130 ±13 mVp-p sine wave.
c Reconnect the cable from channel 1 A10 J2 to A21 J4.
d Press the following keys:
[channel 1 front BNC]
[
channel 2 source]
e Using a BNC(m)-to-SMB(f) cable, connect the oscilloscope to
channel 2 A10 J2.
The oscilloscope should display a 130 ±13 mVp-p sine wave.
f Reconnect the cable from channel 2 A10 J2 to A21 J4.
g If both signals are correct, go to Step 5.
h Place the analyzer on the side closest to the display.
i Remove the bottom cover.
j Set the oscilloscope as follows:
CH1 V/div 100 mV/div
Input Impedance 1 M
Ω
CH1 Coupling dc