112 Keysight B2980B User’s Guide, Edition 1
How to Perform Measurement
Resistance Measurement
Filter
Measurement filter function can be enabled/disabled by using the Filter key.
If the FILT indicator is turned off, pressing the Filter key opens the Measure Filter
dialog box. Pressing OK after setting up the dialog box enables the filter function
and turns the FILT indicator on.
If the FILT indicator is turned on, pressing the Filter key disables the function and
turns the FILT indicator off.
The filter function is used to average measurement result data, calculate moving
average, and so on. For the precise and reliable measurement, it is recommended
to use the filter function, see “Measurement Filter” on page 213 for more
information.
Interlock
The interlock function is designed to prevent electrical shock when a user touches
the measurement terminals. If the Interlock terminal on the rear panel is open,
Voltage Source cannot apply a high voltage over 21 V.
To remove this restriction for high voltage output, the Interlock terminal must be
connected to an interlock circuit installed in a test fixture or a connection
interface. If there is no interlock circuit, you need to install it. For more information
on the interlock circuit and how to install the interlock circuit, see “Installing the
Interlock Circuit” on page 68.
If the interlock circuit is opened during Voltage Source applies a voltage over 21
V, the output voltage is set to 0 V immediately and the output relay is opened.
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