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Operating Concepts
Sweep Types
The frequency subsweeps, or segments, can be defined in any of the following terms:
• start/stop/number of points
• start/stop/step
• center/span/number of points
• center/span/step
•CW frequency
The subsweeps can overlap, and do not have to be entered in any particular order. The analyzer sorts the
segments automatically and lists them on the display in order of increasing start frequency, even if they are
entered in center/span format. If duplicate frequencies exist, the analyzer makes multiple measurements on
identical points to maintain the specified number of points for each subsweep. The data is shown on the
display as a single trace that is a composite of all data taken. The trace may appear uneven because of the
distribution of the data points, but the frequency scale is linear across the total range.
Once the list frequencies have been defined or modified, the list frequency sweep mode can be selected
with the
softkey in the sweep type menu. The frequency list parameters can
also be saved with an instrument state.
Swept List Frequency Sweep (Hz)
The softkey activates a swept list frequency sweep, one of two list frequency
sweep modes. The swept list mode allows the analyzer to sweep a list of arbitrary frequency points which
are defined and modified in a way similar to the stepped list mode.
However, this mode takes data while sweeping through the defined frequency points, increasing throughput
by up to 6 times over a stepped sweep. In addition, this mode allows the test port power and IF bandwidth to
be set independently for each segment that is defined. The only restriction is that you cannot specify
overlapping frequency segments.
Similar to stepped list mode, the softkey also provides access to the segment
menu. However, swept list mode expands the way segments can be defined.Refer to the following
information on how to enter or modify the list segments.
Swept Edit List Menu
The softkey within the sweep type menu provides access to the edit list menu. The function
of this menu is the same as in the stepped list mode.
Swept Edit Subsweep Menu
Using the or softkey within the edit list menu will display the edit subsweep menu. This
menu lets you select measurement frequencies arbitrarily. Using this menu it is possible to define the exact
frequencies to be measured on a point-by-point basis at specific power levels and IF bandwidth settings. The
total sweep is defined with a list of subsweeps.
The frequency subsweeps, or segments, can be defined in any of the following terms:
• start/stop/number of points/power/IFBW
• start/stop/step/power/IFBW
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