Chapter 2 Command System RIGOL
DG800 Programming Guide 2-5
Parameter
Remarks
The frequency counter starts measuring when the input signal reaches the specified trigger level.
The minimum resolution is 6 mV.
Return Format
The query returns the trigger level in scientific notation. The returned value contains 7 effective digits, for
example, 1.500000E+00 (the trigger level is 1.5 V).
Example
:COUN:LEVE 1.5 /*Sets the trigger level of the frequency counter to 1.5 V.*/
:COUN:LEVE? /*Queries the trigger level of the frequency counter and the query returns
1.500000E+00.*/
:COUNter:MEASure?
Syntax
:COUNter:MEASure?
Description
Queries the measurement results of the frequency counter.
Remarks
When the frequency counter is in the "RUN" or "SINGLE" state, send this command to query the
measurement values. When the frequency counter is in the "STOP" state, send this command to query the
measurement values of the last measurement.
Return Format
The query returns a string consisting of 5 parts (representing the frequency, period, duty cycle, positive
pulse width, and negative pulse width respectively), separated by commas. Each part is expressed in
scientific notation and contains 10 effective digits, for example,
2.000000000E+03,5.000000000E-04,4.760800000E+01,2.380415000E-04,
2.619585000E-04 (representing the measurement result: 2 kHz frequency, 500 us period, 47.608% duty
cycle, 238.0415 us positive pulse width, and 261.9585 us negative pulse width).
When the frequency counter function is disabled, the query returns 0.000000000E+00,0.000000000E+00,
0.000000000E+00,0.000000000E+00,0.000000000E+00.
Example
:COUN:MEAS? /*Queries the measurement results of the frequency counter and the query returns
2.000000000E+03,5.000000000E-04,
4.760800000E+01,2.380415000E-04,2.619585000E-04.*/
:COUNter:SENSitive
Syntax
:COUNter:SENSitive {LOW|HIGh}
:COUNter:SENSitive? [LOW|HIGh]
Description
Sets the trigger sensitivity of the frequency counter.
Queries the trigger sensitivity of the frequency counter.
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