MEASure:{FREQuency|PERiod}? [{<
range
>|MIN|MAX|DEF} [, {<
resolution
>|MIN|MAX|DEF}]]
Sets all measurement parameters and trigger parameters to their
for frequency or period
measurements and immediately triggers a measurement. The results are sent directly to the instrument's
output buffer.
Parameter
Typical Return
<
range
>: 3 Hz to 300 kHz. Default: 20 Hz. for FREQuency
<
range
>: 3.33 µs to 333.33 ms. Default: 50 ms (PERiod).
(none)
<
resolution
>: See table below.
Specify <
resolution
> in the measurement's units (V, A, Hz, Ω,
and so on).
Configure frequency measurements using the default aperture. Then make and read one measurement:
MEAS:FREQ?
Typical Re1.3203
l
The 1 ms aperture applies only to the 34465A and 34470A.
l
The frequency or period <
range
> parameter is required only to specify the measurement resolution
parameter. It is not necessary to send a new command for each new frequency or period to be meas-
ured. The <
range
> and <
resolution
> parameters affect the aperture (gate time) as follows:
Resolution (34460A/61A)
Resolution (34465A/70A)
Aperture
Not Applicable
100 ppm × <
range
> (MAXimum) 1 ms
100 ppm × <
range
> (MAXimum) 10 ppm × <
range
> (DEFault)
10 ms
10 ppm × <
range
> (DEFault)
1 ppm × <
range
>
100 ms
1 ppm × <
range
> (MINimum)
0.1 ppm × <
range
> (MINimum)
1 s
l
The input signal for frequency or period measurements has an
AC voltage
component. By default, this
command uses autorange to select the voltage range.
l
With no signal applied, 0 is returned.
SCPI Programming Reference
286
Keysight True
volt
Series Operating and Service Guide