Calibration Procedures 4
Keysight 34970A/34972A Service Guide 109
(Optional) 34904A Relay Contact Resistance Verification
This optional procedure uses an external DMM to make 4-wire ohms
measurements across the relay contacts on the 34904A.
1 Be sure to read “Plug-in Module Test Considerations” on page 94.
2 Connect coppers shorts from H to L on each of the eight columns (
COL1
through
COL8) as shown below. Connect four dual banana plugs to the four
rows as shown below (
ROW1 through ROW4). Be sure to route your wiring for
proper strain relief and install the module cover. Install the 34904A in slot 200
of the 34970A/34972A.
Connections for 34904A Verification Tests