Frequency Measurement Configuration; Low Frequency Timeout - Agilent Technologies 34980A User Manual

2
Features and Functions

Frequency Measurement Configuration

This section contains information to help you configure the instrument for
making frequency measurements.

Low Frequency Timeout

The instrument uses three different timeout ranges for frequency
measurements. The instrument selects the slow (3 Hz), medium (20 Hz),
or fast (300 Hz) filter based on the input frequency that you specify with
this command for the selected channels.
Applies to frequency measurements only.
Low frequency timeout
Input Frequency
3 Hz to 300 kHz (Slow)
20 Hz to 300 kHz (Medium)
200 Hz to 300 kHz (Fast)
• The
• The instrument selects the default 20 Hz (medium) filter after a Factory
Front Panel Operation: DMM or Channel (Configure) > AC FILTER
Remote Interface Operation: Specify the lowest frequency expected in the
input signal on the specified channels. The instrument selects the
appropriate timeout based on the frequency you specify (see table above).
If you omit the optional <ch_list> parameter, the command applies to the
internal DMM.
40
and
CONFigure
(medium) filter.
Reset ( command). An Instrument Preset (
*RST
Card Reset (
SYSTem:CPON
[SENSe:]FREQuency:RANGe:LOWer {3|20|200} [,(@<ch_list>)]
Timeout
1 second
100 ms
10 ms
commands automatically select the 20 Hz
MEASure?
command) does not change the setting.
command) or
SYSTem:PRESet
34980A User's Guide