Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 151
Using Handler Interface
Control/Check the Handler Interface for Maintenance
When the drive source voltage is between 5 V - 9 V, the switch S1 is ON
(closed) and current flows through the input signal resistor of 1 kΩ.
When the source voltage is between 9 V - 15 V, the switch S2 is ON (closed)
and current flows through the input signal resistor of 2.27 kΩ.
When the drive source voltage is between 15 V - 24 V, the switch S3 is ON
(closed) and current flows through the input signal resistor of 3.68 kΩ.
Control/Check the Handler Interface for Maintenance
To control/check the Handler interface, the Keysight E4981A provides several
test commands related to various operations of handler interface. This section
explains the various test commands available in E4981A to check/trouble the
handler interface.
Starting Handler interface test
Handler interface can be set into test mode by using the :TEST:HANDler:MODE
command. When this command value is set to ON, the handler interface pin
signal value can be controlled/read by :TEST:HAND:xxxx commands.
Using Handler interface test commands
After setting the :TEST:HANDler:MODE command value to ON, the following
commands can be used to control/read the handler interface pin signal value:
• :TEST:HANDler:BIN sets the Handler Bin No.
• :TEST:HANDler:COMP sets the Handler Comparator Function value.
• :TEST:HANDler:KEYLock? gets the Handler/Key_Lock signal level as
HIGH/LOW.
• :TEST:HANDler:STATus:ALARm sets the Handler Alarm signal to
HIGH/LOW.
• :TEST:HANDler:STATus:EOM sets the Handler End of Measurement (EOM)
status to HIGH/LOW.
• :TEST:HANDler:STATus:INDex sets the Handler Index value to HIGH/LOW.
• :TEST:HANDler:STATus:NC sets the Handler No Contact/Low C Reject
signal to HIGH/LOW.
• :TEST:HANDler:STATus:OVLD sets the Handler Overload signal status to
HIGH/LOW.
If the source voltage exceeds the available range, the analog circuit in the
hardware might be damaged.
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