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This section describes how to configure frequency and period measurements from the
front panel.
Step 1: Configure the test leads, as shown below.
Step 2: Press [Freq] on the front panel, then use the first soft key to select a
frequency or period measurement.
Step 3: Press Range to choose a range for measurement. Auto (
Auto range
adjustment) selects range for measurement based on input.
Compared with
manually selected range, auto range adjustment is more convenient, but can lead to
slower measurement. Automatically adjusted range can turn up to 120% of the
current range and down to less than 10% of the current range.
Step 4: Press AC Filter and select filter for measurement. The instrument uses three
different AC filters, allowing you to optimize low-frequency accuracy or shorten AC
stabilization time after changing the amplitude of the input signal.
The three filters are 3 Hz, 20 Hz, and 200 Hz, and in general, you should choose the
highest frequency filter whose frequency is less than the frequency of the signal you
are measuring, because a higher frequency filter results in a faster measurement. For
example, it is better to use a 20 Hz filter when measuring a signal in the 20 to 200 Hz
range.
If measurement speed is not an issue, choosing a lower frequency filter will result in a
quieter measurement, depending on the signal you are measuring.
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