Measuring Relative Frequency - Agilent Technologies 53151A Operating Manual

NOTE
Chapter 1 Getting Started
Operating the Counter

Measuring Relative Frequency

You can measure the difference in frequency from one measurement to
another (drift) using the Relative Frequency function. You do this by
pressing the Shift and Rel Freq (Offset On/Off) keys as shown in the
diagram below (this example assumes that a signal is currently applied
to Channel 1).
The Counter stores the current frequency reading when you press the
Rel Freq key. It then subtracts this value from all subsequent readings
and displays the difference until you press the Rel Freq key again.
Shift
Rel Freq
Offset Offset
On/Off On/Off
If the input signal fluctuates, the value displayed varies as the Counter
continues to take measurements. You can vary the speed at which
measurements are taken by varying the settings for Rate and Resolution
(see "Setting the Measurement Rate" and "Setting the Resolution" on
pages 1-32 and 1-34).
Operating Guide
Ch 1
Freq
Ch 1
Freq
Ch 1
Rel Freq
Shift
1-19