202 Chapter 4
Troubleshooting
Performance test failure troubleshooting
Performance test failure troubleshooting
This section describes the adjustment and troubleshooting procedures when the E5071C
fails the performance tests. If the performance of the instrument is critical for the test limits
and seems to be adjustable, perform first the adjustment(s) related to the failed test. When
the test result is far from the tolerance of the test or the performance is not adjustable,
isolate the faulty assembly in accordance with the "Performance tests failure
troubleshooting procedure". This is for the purpose to find the parts should be replaced on
the fail of the performance test, so it is recommended to execute all of the adjustment and
performance test as final step, in the case of finishing the troubleshooting.
Recommended adjustment for performance test failure
Table 4-6 shows the recommended adjustments when the performance test fails. Select the
adjustment program corresponding to the recommended adjustment and perform the
adjustment.
NOTE There are no adjustment related to trace noise, crosstalk and system dynamic range.
Table 4-6 Recommended adjustment for performance test failure
First Failed Test Recommended Adjustment
OCXO
Frequency Reference
AUX Input
Synthesizer Gain
Virtual Bridge Coefficient
Source Output Power
Receiver IF Range
Receiver Port Characteristics
Receiver Absolute Gain
Receiver RF Range
AUX Input
###
Frequency Accuracy (Standard ) ###
Frequency Accuracy (1E5)
###
RF Output Level Accuracy&Flatness ### ###
RF Output Level Linearity ### ###
Trace Noise
Crosstalk
System Dynamic Range
Dynamic Accuracy ###
Uncorrected System Performance ### ###
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