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Keysight E4991B - Adjustment Failure Troubleshooting

Keysight E4991B
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34 Impedance Analyzer
1 Troubleshooting
(**: most suspicious, *: suspicious)
Adjustment failure Troubleshooting
Table 4 shows the recommended replacement board when the
adjustment fails.
(**: most suspicious, *: suspicious)
Frequency Accuracy (1E5) * **
Level Accuracy ** * *
DC Bias Accuracy ** *
Z Measurement Accuracy * **
Table 3 Recommended replacement board for performance test failure
Table 4 Recommended replacement board for adjustment failure
Failed Adjustment item
A21 Source
A6 Receiver
A9 DC Bias
Test Head
Frequency Reference **
Source DC Offset **
DC Bias Level **
ADC **
RF Range **
Synthesizer Gain **
Source Power **
Local Gain ** **
IF Range **
Default Cal Coef **

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