- 450 Keysight E4980A/AL User’s Guide
Bias Current Interface
Preparation
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Preparation
Equipment Requirements
The 42841A supplies 20 A (1 unit) and 40 A (2 units) DC current bias when
combining the E4980A/AL (test frequency: 20 Hz to 2 MHz) and the 42842A/B
test fixture.
The following equipment is necessary for a system that uses the E4980A/AL
and the bias current source.
— E4980A/AL Precision LCR Meter (with Option 002 Bias Current Interface)
— 42841A Bias Current Source (two units are necessary for 40 A system)
— 42842B Bias Current Test Fixture (only 42842B for 40 A system)
— 16048A Test Lead (with BNC connector)
— Bias Current Interface Cable (furnished with the 42841A)
— 42843A Bias Current Cable (required only for 40 A system)
Cable Connection
Each instrument needs to be connected using the bias current interface cable,
16048A test lead, and 42843A bias current cable (only for 40 A system). The
cable connection varies depending on the system configuration.
20A System
Connect the E4980A/AL to the 42841A and 42842A as shown in Figure D-1 on
page 451 using the following procedure.
1. Connect the UNKNOWN terminal of the E4980A/AL to the TO UNKNOWN
terminal of the 42842A using the 16048A test lead.
2. Connect the Bias Current Interface connector of the E4980A/AL to the Bias
Current Control Input A connector of the 42841A using the cable and the
adapter. The cable is furnished with the 42841A and the adapter is
furnished with the E4980A/AL.
3. Connect the 42842A test fixture directly to the front panel of the 42841A.
Confirm that Option 002 Bias Current Interface is installed in the option
slot of the E4980A/AL’s rear panel. When option 002 is installed, the
50-pin connector marked “Option 002: Bias Current Interface” is attached
to either of the two option slots of the rear panel.
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