General Considerations
The following Custom Instructions can be used by the Agilent 4263B or E4980A LCR Meters to make
capacitance, inductance and resistance measurements. The LCR meter applies a sign wave to make all
these measurements. Although 4-wire fixturing is required to connect from the LCR meter to the device
under test, make fixturing from the LCR meter to the device under test as short as possible to minimize
parasitic capacitance that can affect measurement accuracy. Parasitic capacitance also exists in the CH2
tester. Using as few of test points as possible in the CH2 chassis connected to the LCR Meter, such as
160 or 320 points, will minimize this capacitance. Also calculate or experiment to choose a sine wave
frequency that gives the best results on your DUT. For more help on your specific test application, consult
with your Cirris support representative
Attach 4 Wire
Attach 4 Wire defines the CH2 test points that will be used to communicate with the Agilent LCR Meter
and the communication protocol that will be used in the communication. This Custom Instruction must be
inserted in the test program before any other Agilent LCR Meter custom instruction is used. See Setting up
Communication in the CH2 on page 12 for more information on using this Custom Instruction.
Measure 4W Capacitance
This Custom Instruction allows you to accurately measure capacitance in the device under test. A tare
value may be entered to null out the effects of parasitic capacitance in the test. You can enable high and
low limits for the test measurement acceptance.
Note this Custom Instruction must be preceded by the LCR meter’s Attach 4-wire custom instruction.
Remember all connections to the device under test must be 4-wire.
Measure 4W Inductance
This Custom Instruction allows you to accurately measure inductance in the device under test. A tare
value may be entered to null out the effects of parasitic inductance in the test. You can enable high and
low limits for the test measurement acceptance.
Note this Custom Instruction must be preceded by the LCR meter’s Attach 4-wire custom instruction.
Remember all connections to the device under test must be 4-wire.
Measure 4W Resistance
This Custom Instruction allows you to accurately measure resistance in the device under test. A tare
value may be entered to null out the effects of parasiticresistance in the test, or to null the non 4-wire
segment of the fixturing. You can enable high and low limits.
Note this Custom Instruction must be preceded by the LCR meter’s Attach 4-wire custom instruction.
Remember all connections to the device under test must be 4-wire.
User Defined 4W Measure
User Defined 4-Wire Measure allows you to issue SCPI compliant commands to the LCR meter to create
your own custom instruction. Using SCPI commands requires much technical ability, practice, and
patience. Refer to the LCR Meter
Manual for more information.
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