Agilent Technologies 89410A Service Manual page 84

Troubleshooting the Analyzer
To troubleshoot source and calibrator out failures
4
Check the calibrator output.
a
b
Oscilloscope Setup
Connect CH1 to SOURCE
CH1 V/div 20 mV/div
50 Ω
Input Impedance
CH1 Coupling dc
Probe Atten 1
Display Mode Repetitive
Averaging 8
Time/div 500 ns/div
Trigger Trg'd Sweep
Trig Src Chan1
Trigger Level 0 V
c
1-66
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 ]
Using an oscilloscope and 1:1 probe, check the following signal.
Parameters
Amplitude
Time
Duty Cycle
Pulse Shape
Calibrator
If the signal is incorrect, go to Step 7.
Waveform