5500A
Operator Manual
6-12
CFREQ?
Overlapped CoupledIEEE-488 RS-232 Sequential
xx xx x
(Capacitance Frequency query) Return the optimal frequency for stimulus when
measuring or calibrating capacitance output.
Response: <value> of the optimal frequency
Example: CFREQ? returns 1.0E+2
Return 100 Hz as the optimal frequency for the selected capacitance output (1.0 µF for
this example). The return is 0 if not sourcing capacitance.
*CLS
Overlapped CoupledIEEE-488 RS-232 Sequential
xx xx x
(Clear Status command) Clear the ESR, ISCR0, ISCR1, the error queue, and the RQS
bit in the status byte. This command terminates pending operation complete commands
(*OPC or *OPC?).
Parameter: (None)
Example: *CLS
Clear the ESR, ISCR0, ISCR1, the error queue, and the RQS bit in the status byte.
CUR_POST
Overlapped CoupledIEEE-488 RS-232 Sequential
xx xx x
(Current Post command) Select the active 5725A Amplifier or 5500A Calibrator front
panel binding posts terminals for current output. This also applies to power outputs. The
current post setting is retained until the 5500A Calibrator power is turned off or the
5500A Calibrator R button is pressed. If the current output can only be sourced by
the 5725A Amplifier (for example, 2 A at 10 kHz), the parameter AUX will return an
error “Value not available.”
Parameters: AUX (selects the 5500A Calibrator AUX terminals)
BOOST (selects the 5725A Amplifier terminals)
Example: CUR_POST AUX
Select the 5500A Calibrator front panel AUX terminals for the output current.
CUR_POST?
Overlapped CoupledIEEE-488 RS-232 Sequential
xx xx x
(Current Post query) Return the active front panel binding post terminals, 5725A
Amplifier BOOST or 5500A Calibrator AUX, used for current output.
Responses: AUX (5500A Calibrator AUX terminals are selected)
BOOST (5725A Amplifier BOOST terminals are selected)
Example: CUR_POST? returns AUX
Return AUX when the 5500A Calibrator front panel AUX terminals are selected for
output current.
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