Keysight N9038A Service Guide

Keysight N9038A MXE Service Guide 377
Power Supply & Midplane
A7 Midplane Board Assembly Troubleshooting
POWER_OK Digital Supplies OK DCOM A6 Red TTL Low Off TTL High
POWER_ON_L Power Supply Enable DCOM A4 Off TTL High Green TTL Low
POWER_SW_L Power Switch
Pressed
ACOM A4 n/a TTL High Green
TTL High
b
a. With AC mains connected to the instrument
b. POWER_SW_L should only be at a TTL Low state when the front panel power switch is being pressed
Table 12-3 A7 Midplane Board LEDs and Test Points
Supply/
Signal
Description Referenced
To
Generated
On
Expected Status
Power Off
a
Power On
LED Test Point
(VDC)
LED Test Point
(VDC)

Keysight N9038A Specifications

General

Brand	Keysight
Model	N9038A
Category	Measuring Instruments
Language	English