Keysight E4981A - Daily Checks and Self-Testing

Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 77
Sorting Based on Measured Result (Comparator Function)
Rejecting Excessively Low Measured Results (Low C Reject Function)
Rejecting Excessively Low Measured Results (Low C Reject Function)
Turning ON/OFF Low C reject function
To turn ON/OFF the Low C reject function, use the following command.
• [:SENSe][:FIMPedance]:CREJect[:STATe] on page 264
You can detect an excessively low (equal to or less than the preset boundary
value) measured result of the primary parameter value (Cp or Cs) as Low C
(abnormal measurement status) by turning ON the Low C reject function.
Setting limit (range boundary values) of Low C reject function
To set the limit (boundary values of the range in which Low C is detected) of
the Low C reject function, use the following command.
• [:SENSe][:FIMPedance]:CREJect:LIMit on page 263
Handler output shares the line for No Contact & Low C Reject and becomes
active when either one is detected.
When primary parameter is lower than the border value.
When the comparator function is ON, the sorting judgment is performed
normally even if Low C is detected. However, the sorting judgment result
displayed on the screen is LOWC and, on the handler interface, the
/LOWC_OR_NC signal becomes active (LOW) in addition to the sorting
judgment signal.