Agilent Technologies 20ES, 20ET, 22ES, 22ET 8719ES, MODEL 8719ET Swept List Frequency Sweep (Hz)

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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 appea r 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 li st f r eq uency swe ep mode c a n

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.

LIST FREQ [STEPPED]

LIST FREQ [SWEPT]

EDIT LIST

EDIT

ADD

Agilent Technologies Swept List Frequency Sweep (Hz)