Keysight Technologies 34972A Service Guide

Calibration Procedures 4
Keysight 34970A/34972A Service Guide 113
(Optional) 34908A Relay Contact Resistance Verification
This optional procedure uses an external DMM to make 4-wire ohms
measurements across the relay contacts on the 34908A. Note that when
measuring the resistance of the contacts of the channels relays, the test also
includes the Bank Switch.
Test 1:
See the diagram on page 114 for the required connections for this test (be sure to
probe the inductor at the indicated location). For this measurement, the 34908A is
not installed in the 34970A/34972A. Record the
4-wire ohms measurements from the external DMM in the table below.
NOTE
Be sure to read “Plug-in Module Test Considerations” on page 94.
Test #
External DMM Ohmmeter Connections
Measured Value
HI LO HI Sense LO Sense
1 L400 J101, C12 L400 J101, C12 _____________ Ohms

Keysight Technologies 34972A Specifications

General

Brand	Keysight Technologies
Model	34972A
Category	Switch
Language	English