HP 4395A - Page 197

Performance Tests Failure Troubleshooting
Perform the following procedure sequentially when any of performance tests fail.
Perform Adjustments and Correction Constants
Table 6-3 gives the recommended adjustments and correction constants when a performance
test fails. If a performance test fails, you should perform the corresponding adjustments or
correction constants function as shown in Table 6-3. If the tests still fail, refer to Table 6-4 and
replace the assembly.
Note that this table lists some typical cases. In a few cases, other assembly may actually be
faulty.
Table 6-3. Troubleshooting Information for Performance Test Failure 1
Test
No.
Failed Test Adjustment Test Number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 Frequency Accuracy Test
p p p p p p p
2 Source Level Accuracy/Flatness
Test
p p p p p p p
3 Non-sweep Linearity Test
p p p p p p p
4 Power Sweep Linearity Test
p p p p p p p
5 Harmonics/Non-harmonic Test
p p p p p p p
6 DC Bias Test
p
7 Receiver Noise Level Test
p p p p p p p p p
8 Input Crosstalk Test
p p p p p p
9 Input Impedance Test
p p p p p p
10 Absolute Amplitude Accuracy
Test
p p p p p p p p p p p
11 Magnitude Ratio/Phase Dynamic
Accuracy Test
p p p p p p p p p
12 Magnitude Ratio/Phase
Frequency Response Test
p p p p p p p p p
13 Displayed Average Noise Level
Test
p p p p p p p p p p p
14 Amplitude Fidelity Test
p p p p p p p p p p
15 Input Attenuator Switching
Uncertainty Test
p p p p
16 Noise Sidebands Test
p p p p p p
17 Amplitude Accuracy/Frequency
Response Test
p p p p p p p p p p
18 Second Harmonic Distortion Test
p p p p p
19 Third Order Intermodulation
Distortion Test
p p p p p p p p p p p
20 Other Spurious Test
p p p p p p p p p p p
21 Residual Response Test
p p p p p p p p p p p
Troubleshooting 6-9