Inspect The Adjustment/Performance Test Results; Troubleshoot Suspicious Functional Group; Functional Group To Suspect When An Adjustment/Performance Test Fails - Agilent Technologies E4915A Service Manual

6. Inspect the Adjustment/Performance Test Results

When you want to test the individual E4915A/E4916A speci cations and other analog
performance, perform the adjustments and performance tests in accordance with the
Adjustments and Performance Tests chapter.

Troubleshoot Suspicious Functional Group

Table 3-2 lists the functional groups to suspect rst when an adjustment/performance test fails.
If an adjustment/performance test fails, you should check the function groups as shown in the
table. The following table lists some typical cases. In a few cases, other groups may actually be
faulty.
Functional Group to Suspect When an Adjustment/Performance Test
Pre-check and Source Linearity Calibration
Oscillator Calibration
Source level Accuracy and Source Power Linearity Test
Frequency Accuracy Test
Through Calibration
Receiver Test
Isolation Test
Open Calibration with PI Test Fixture
Short Calibration with PI Test Fixture
Load Calibration with PI Test Fixture
Load Test with PI Test Fixture
Open Calibration with Impedance Probe
Short Calibration with Impedance Probe
Load Calibration with Impedance Probe
Load Test Impedance Probe
Only if the source power linearity test result at higher output level fails.
1
Only if the calibration/test results with PI test xture fail and calibration/test results
2
with impedance probe pass, or the calibration/test results with PI test xture pass and
calibration/test results with impedance probe fail.
Table 3-2.
Fails
Test A1 Main A2 Sub
p p
p p
p
1
p
p p
p p
p p
p
2
p
2
p
2
p
2
p
2
p
2
p
2
p
2
Troubleshooting 3-5