Chapter 4 253
Key Function Descriptions
Key Descriptions
This function is useful in harmonic distortion
measurements, where the delta marker can be used to
mark the difference between harmonics, and MKR ∆ ->
CF can be used to tune to the frequency of the
fundamental.
Front-panel key access:
MKR →
MKR ∆→CF STEP Sets the center-frequency step-size to the delta
frequency value so that, when the center frequency
function is active, using the step key will result in
changes to the center frequency equivalent to the delta
value. This can be used to step from one harmonic to
another which is useful in harmonic distortion
measurements.
Front-panel key access:
MKR →
MKR∆→CH PWR BW Sets the channel power bandwidth parameter to
the value of the difference between the two markers.
This key is useful when using the occupied bandwidth
function to measure power in a channel. The MKR∆→
CHPWR BW softkey can be used to change the desired
channel power bandwidth to the frequency difference
between the two markers that are currently on the
signal. The MKR MEAN → CF is then used to center
this bandwidth on the display.
Front-panel key access:
MEAS/USER
MKR ∆→SPAN Sets the frequency span to the delta frequency value,
allowing you to span down quickly to the spectrum of
interest.
Front-panel key access:
MKR→
MKR 1/∆→CF Sets the center frequency equal to the reciprocal of the
delta value. In zero span, the delta-marker frequency
readout units are seconds. Therefore, the units for the
reciprocal of the delta value will be in Hz.
Front-panel key access:
MKR →
MKR 1/∆→CF STEP Sets the center-frequency step-size equal to the
reciprocal of the delta value.
Front-panel key access: MKR→
MKR MEAN→ CF Moves the midpoint of the two displayed markers to
the spectrum analyzer center frequency. This key is
useful when using the occupied bandwidth function to
measure power in a channel.
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