HP 4395A - Page 16

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5. Source Flatness Adjustment ........................ 5-15
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
6. Input DC Oset Adjustment ........................ 5-16
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
7. Input Local Null Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
8. IF 24 dB Gain/Phase Adjustment . . . . . . . . . . . . . . . . . . . . . . 5-20
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
9. Receiver Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
10. IF 8 dB/16 dB Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . 5-25
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
11. Temperature Adjustment . . . . . . . . . . . . . . . . . . . . . . . . .
5-26
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-26
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-26
12. Receiver Flatness Adjustment . . . . . . . . . . . . . . . . . . . . . . .
5-27
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-27
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-27
13. Receiver Attenuator Adjustment .....................
5-29
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-29
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-29
14. IF BPF Flatness Adjustment .... .... .... .... .... ...
5-30
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-30
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-30
15. DC Bias Adjustment (Option 010) .....................
5-31
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-31
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-31
6. Troubleshooting
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
TROUBLESHOOTING SUMMARY ....................... 6-1
START HERE ................................ 6-3
INSPECT THE POWER ON SEQUENCE .... .... .... .... ....
6-4
Check the Fan.. .... .... .... .... .... .... .... .
6-4
Check the Front Panel LEDs and Displays . . . . . . . . . . . . . . . . . .
6-4
Check Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4
INSPECT THE REAR PANEL FEATURE . . . . . . . . . . . . . . . . . . . .
6-5
Check the HP-IB Interface .........................
6-5
Check the Parallel Interface ........................
6-5
Check the mini DIN Keyboard Connector .... .... .... .... ..
6-5
Internal Tests Failure Troubleshooting . . . . . . . . . . . . . . . . . . . . . 6-6
Check the Power-On Selftest . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Execute All Internal Tests .........................
6-6
Execute the Individual Test ........................
6-6
External Tests Failure Troubleshooting ....................
6-8
Performance Tests Failure Troubleshooting ..................
6-9
Perform Adjustments and Correction Constants ...............
6-9
Contents-6