6-88 Chapter6
Front-Panel Key Reference
Sweep
Interaction with Other Analyzer Functions
Certain conditions prevent segmented sweep from being activated,
while others cause this mode to be turned off. For analyzers with Option
AYZ, the mixer frequency range (
Input, Input Mixer (Ext), Ext Mix Band)
must be set to include the frequencies of interest in the segmented
sweep table. If the mixer range is not the same, segmented sweep will
not turn on. If the mixer range is changed, segmented sweep will be
turned off.
Segmented sweep is not available when the following analyzer
functions are turned on: Demod, Signal ID, and Signal Track. In
addition, keys which access these functions are grayed out if segmented
sweep is on. This is also true for the following functions: Mkr→CF,
Mkr→CF Step, Mkr→CF Start, Mkr→CF Stop, Mkr∆→Span, Span
Zoom, Zone Span, and Zero Span.
Confining marker pairs (marker delta, band pair, and span pair) to one
segment facilitates interpretation of marker readings.However, marker
pairs can provide useful information across segments. Amplitude
readings are straightforward because the y-axis is consistent over all
segments. Frequency or time readings require consideration of
differences in sweep time, number of points, and span when
interpreting measurements across segments.
Marker delta functions differently depending upon the type of segment
in which it is activated. If you turn on marker delta in a segment set to
0 Hz span, it remains in that segment and provides amplitude and time
difference measurements. If you initiate a marker delta in a non-zero
span segment, it will function across segments continuing to display
frequency and amplitude information.
Band pair and span pair function similarly to marker delta in
segmented sweep with some characteristics which need to be noted.
When a band or span pair is initiated in segmented sweep, the analyzer
defaults to the frequency domain. If you wish to make time
measurements in a zero-span segment, the domain must be set to time
(
Marker, More 1 of 2, Readout, Time). The band or span pair can traverse
all segments without regard to the type of segment in which they were
initiated.
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