Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
User Manual
9 Using Scanner Interface
You can select correction data for each channel (up to 256 sets,
multi-correction function) or input/output a timing control signal for
measurement and scanner operation through the scanner interface. This
chapter gives information required to configure a scanning system using the
scanner interface and multi-correction function.
Using Multi-correction Function
The E4981A provides a function that lets you select a data set from up to 256
correction data sets measured and stored in advance and use it
(multi-correction function). This function performs OPEN/SHORT/LOAD
correction for each channel of the scanner to cancel variations in measured
values caused by a different measurement path for each channel.
Consequently, the function can provide highly reliable measurement.
This section describes how to use the multi-correction function.
Turning ON/OFF multi-correction function
When you turn ON the multi-correction function, the correction data for each
channel, which has been measured in advance according to the procedure
described in “Measuring multi-correction data”, is used to perform error
correction.
The ON/OFF state of the multi-correction function is dependent on the
ON/OFF state of the scanner interface. When the multi-correction function
is OFF, the channel number inputs (/CH0 - /CH7 and /CH_VALID) from the
scanner interface are ignored and /INDEX and /EOM stay LOW. Regardless
of the ON/OFF state of the multi-correction function, /EXT_TRIG is valid
when the trigger mode is set to the external trigger (EXT).
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