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Troubleshooting the Analyzer
To troubleshoot source and calibrator out failures
4 Check the calibrator output.
a Press the following keys:
[Preset]
[
System Utility]
[
auto cal off]
[more cal setup
]
[
auto zero cal off]
[Return
]
[
more]
[
diagnostics]
[
service functions]
1125
[
enter]
[
special test modes]
[
cal]
[
cal signal on]
b Using an oscilloscope and 1:1 probe, check the following signal.
c If the signal is incorrect, go to Step 7.
Oscilloscope Setup Parameters Waveform
Connect CH1 to SOURCE Amplitude
Time
Duty Cycle
Pulse Shape
CH1 V/div
Input Impedance
CH1 Coupling
Probe Atten
Display Mode
Averaging
Time/div
Tri gger
Trig Src
Trigger Level
20 mV/div
50 Ω
dc
1
Repetitive
8
500 ns/div
Trg’d Sweep
Chan1
0 V
Calibrator
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