B&K Precision 4052-4055 - Manual - Manual (Page 61)

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Frequency Counter
The instrument has a built-in frequency counter. The counter input shares the same BNC
terminal as the channel 2 main output terminal, labeled CNT. To access and enable the
counter function, select the Counter option from the utility menu.
Note: When the counter function is enabled, channel 2 will automatically be disabled
and the same BNC terminal will become the counter’s input terminal.
There are several measurement parameters that can be displayed when counter is enabled.
Measure Frequency/Period
The instrument can measure in frequency or period by selecting Freq or Period respectively
from the counter menu.
Measure Width and Duty
The width of the signal can be measured. This parameter is especially useful for measuring
square and pulse signals. Users can select between measuring positive or negative width by
selecting PWidth or NWidth respectively from the counter menu. Users can also measure
the duty cycle in percent of the signal by selecting Duty from the menu.
Adjust Reference Frequency