Using Connector Plate - Agilent Technologies B1500A User Manual

WARNING
CAUTION

Using Connector Plate

This section provides the information useful for connecting cables and probing
needles to a connector plate.
• "To Reduce Leakage Current"
• "To Measure Low Resistance"
To Reduce Leakage Current
To reduce the leakage current caused by connection cables, the guard technique is
effective. Connect the probing needles to the terminals of the connector plate by
using coaxial cables as shown below:
1. At end of cable, connect coaxial center conductor to force terminal of connector
plate, and connect coaxial outer conductor to guard terminal of connector plate.
2. At another end, connect coaxial center conductor to tail of the probing needle.
Never connect the outer conductor at this cable end.
Extend the outer conductor as close as possible to the probing needle.
Example
The following example connection can be used to reduce the leakage current.
Extend the outer conductor as close as possible to the probing needle. This also
reduces the induced noise.
Connector plate
Do not touch the guard terminal with bare hands because you may be shocked
by high voltage. The potential of the guard terminal is equal to the output
voltage.
Never connect the guard terminal to any other output, including circuit common,
frame ground, or the terminals of any other unit. Doing so may damage the unit.
Agilent B1500A User's Guide, Edition 10
Connecting Measurement Devices
Center conductor
Outer conductor
Coaxial cable
Contact pad
Installation
Probing needle
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