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Features and Functions
Frequency and Period
This section describes how to configure frequency and period measurements from the front panel.
Step 1: Configure the test leads as shown.
Step 2: Press [Freq] on the front panel and then use the first softkey to choose either frequency or period
measurement.
Step 3: Press Range to select a range for the measurement. (Auto (autorange) automatically selects the
range for the measurement based on the input. Autoranging is convenient, but it results in slower meas-
urements than using a manual range. Autoranging goes up a range at 120% of the present range, and
down a range below 10% of the present range.
Step 4: Press AC Filter and choose the filter for the measurement. The instrument uses three different AC
filters that enable you either to optimize low frequency accuracy or to achieve faster AC settling times fol-
lowing a change in input signal amplitude.
The three filters are 3 Hz, 20 Hz, and 200 Hz, and you should generally select the highest frequency filter
whose frequency is less than that of the signal you are measuring, because higher frequency filters result
in faster measurements. For example, when measuring a signal between 20 and 200 Hz, use the 20 Hz fil-
ter.
If measurement speed is not an issue, choosing a lower frequency filter may result in quieter meas-
urements, depending on the signal that you are measuring.
Keysight Truevolt Series Operating and Service Guide
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