Keysight Technologies E364 A Series User Manual

Service and Maintenance 8
E364xA User’s and Service Guide 203
Some circuits produce their own local bias supplies from the main bias supplies.
Check that these local bias supplies are active. In particular, the analog-to-digital
converter (ADC), AC input, and front panel sections have local bias supplies.
Always check that the power supplies are free of AC oscillations using an
oscilloscope. Failure of bias supplies will cause many self-test failures.
Table 8-1 Bias supplies voltages
Bias supply Minimum Maximum Check at
+5 V floating +4.75 V +5.25 V U14 pin 2
–5.1 V floating –4.75 V -5.25 V Anode of CR15
+15 V floating +14.25 V +15.75 V Anode of CR139
–15 V floating -14.25 V -15.75 V Cathode of CR140
Table 8-2 Bias supplies voltages (serial MY53xx6xxx)
Bias supply Minimum Maximum Check at
+3.3 V floating +3.135 V +3.465 V U23 pin 3
+15 V floating +14.25 V +15.75 V Anode of CR139
-15 V floating –14.25 V –15.75 V Cathode of CR140

Keysight Technologies E364 A Series Specifications

General

Brand	Keysight Technologies
Model	E364 A Series
Category	Power Supply
Language	English