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Operation
Figure 2-8: Fixture & Cable Connection
If the device under test (DUT) is a radial lead component it can be inserted directly into
the fixture slots. The slots accommodate wires with diameters from 0.25mm to 1mm
(AWG 30 to AWG 18 wire). If the DUT is an axial-lead component the two axial lead
adapters should be installed in the fixture (by pushing vertically downward) and the
component installed in them. These adapters accommodate wire with diameters up to
1.5mm (AWG 15 wire).
Instrument zeroing should be performed once the test fixture is connected. For
information refer to paragraph 2.2 on Instrument Zeroing. The fixture contacts should be
shorted with bus wire, the larger the better, but in accordance with wire sizes discussed
above. It should be noted that if measurements are to be made on the very lowest range
(20m
full-scale), readings could be in error, although small, by the resistance value of
the short itself. The approximate value of the shorting wire can be determined by zeroing
the instrument using the standard 4-terminal Kelvin clips and then measuring the
resistance of the shorting wire.
1 8 8 0 - 5 2
4-BNC to Axial/Radial Adaptor
I+
P +
I-
P-
I+
P +
P-
I-
