OPERATION
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KELVIN CLIPS Kelvin Clips provide a simple means to measure large or unusually sized parts.
They can connect to any component lead up to 0.3" (7.6mm) in diameter. When
connecting the Kelvin Clips to a device, remember that the red lead denotes the
"+" side of the fixture if any biased measurements are made. Connect one clip to
each side of the component and perform the measurement. Whenever the fixture
configuration is changed, be sure to perform open and short circuit calibration.
Kelvin Clips will give the best results if they are used at frequencies of 1 kHz and
below and impedances of 1 MΩ or less. At higher frequencies, lead position and
other subtle conditions can change stray impedances, affecting measurement
accuracy. For measurements outside of these limits, a test fixture is advised.
SMD TWEEZERS The SMD Tweezers provide a combination of test fixture and handling tweezers
for measuring surface mount devices. The tweezers make a Kelvin connection to
devices up to 0.4" (10.2mm) wide and make it easier to measure and sort these
small components. The parts tray in front of the fixture provides a convenient
place to place parts while sorting and measuring them. Connection of the SMD
tweezers to the SR715/720 fixture is the same as for the Kelvin Clips.
Remember, always perform open and short circuit calibration after changing the
fixture setup. The tweezers are marked with the same polarity as the fixture for
making biased capacitance measurements. (Some units do not have the polarity
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