MEASure:{FREQuency|PERiod}? [{<range>|MIN|MAX|DEF} [,
{<resolution>|MIN|MAX|DEF}]]
Sets all measurement parameters and trigger parameters to their default values 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 for PERiod
+1.32130000E+03
<resolution>: 1 ppm × <range> (MINimum) to 100 ppm × <range>
(MAXimum), DEFault = 10 ppm × <range> (100 ms aperture)
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?
l The <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 measured.
l If the input voltage is too large for the selected voltage range (manual ranging), the instrument displays the word
Overload on the front panel and returns "9.9E37" from the remote interface. Autoranging can be enabled for the
input voltage.
l Period and frequency measurements do not autorange; the <range> and <resolution> parameters affect the
aperture (gate time) as follows:
Resolution Aperture
100 ppm × <range> (MAXimum) 10 ms
10 ppm × <range> (DEFault) 100 ms
1 ppm × <range> (MINimum) 1 s
l With no signal applied, 0 is returned.
168 Agilent Truevolt Series DMM Operating and Service Guide
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