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DIFFERENTIAL MARKERS-A
DIFFERENTIAL MARKERS -
been activated, m places two markers at the center of the display.) The first marker's position is fixed. The
second marker's position is under DATA control.
The display readout shows the difference in frequency and amplitude.
Example
Measuring the differences between two signals on the
same display.
First ss the marker on one of the signal peaks with
Activate m , movAthe second marker to the other
signal peak with 0 , and read their differences
directly.
Fractional Differences
When the reference level is calibrated in voltage, marker m amplitudes are given as a fraction, the voltage ratio
of two levels.
With logarithmic amplitude scale and the reference level in voltage, the fraction is based on the equation:
Since this equation yields the harmonic distortion due to a single harmonic, its distortion contribution can be read
directly from the display.
46 Manual Operation
A
20
fraction = 10
-10.0
MARKER
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