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SCPI Commands for the Counter
3–110
VX4101A MultiPaq Instrument User Manual
N/A
SOURce:COSCillator[:SOURce] ROSCillator|TCXO1
This command selects the source of the Counter reference oscillator. Choices are
the VX4101A Reference Oscillator (ROSCILLATOR) or the Temperature
Controlled Crystal Oscillator (TCXO1). Specifying TCX01 as a source will
generate an error if Option 1T is not available on the VX4101A.
Query Value
SOURce:COSCillator:VALue? <oscillator frequency>
SOURce:COSCillator[:
SOURce]?
This query returns the current clock source selected for the
counter. Possible values are:
ROSCILLATOR|TCXO1
SOURce:COSCillator[:SOURce] ROSCillator|TCXO1
Command Response
*RST
SOUR:COSC? TCXO1
SOURce:COSCillator:VALue?
Command Response
SOUR:COSC:VAL? 9.9999999999999E+06
STATus Subsystem
The STATus commands for the VX4101A Counter includes the use of the
coincidence bit. This bit indicates that a time interval measurement has occurred
that is approximately coincident with the built-in delay for the counter front end.
This delay is calibrated and is usually about 1.8 ns. There are three cases in
which the coincidence bit is used:
H During single-shot measurements, the firmware checks the coincidence bit,
and if it is set, the time interval result to be returned will be set to the
calibrated delay value. There are no errors generated.
Related Commands
Command Description
Query Response
Examples