HP 8753E manual Manual Sweep Time Mode, Auto Sweep Time Mode, Minimum Sweep Time

Sweep Time

me ~~:~~-Z4!$::*i:=~softkey selects sweep time as the active entry and shows whether the

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automatic or manual mode is active. The following explains the difference between automatic and manual sweep time:

nManual sweep time. As long as the selected sweep speed is within the capability of the instrument, it will remain hxed, regardless of changes to other measurement parameters. If you change measurement parameters such that the instrument can no longer maintain the selected sweep time, the analyzer will change to the fastest sweep time possible.

w Auto sweep time. Auto sweep time continuously maintains the fastest sweep speed possible with the selected measurement parameters.

Sweep time refers only to the time that the instrument is sweeping and taking data, and does not include the time required for internal processing of the data, retrace time, or bandswitching time. A sweep speed indicator t is displayed on the trace for sweep times longer than 1.0 second. For sweep times faster than 1.0 second, the t indicator appears in the status notations area at the left of the analyzer’s display.

Manual Sweep Time Mode

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When this mode is active, the softkey label reads :$m; ~~~~~~~~~~~~. This mode is
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engaged whenever you enter a sweep time greater than zero. This mode allows you to select a fixed sweep time. If you change the measurement parameters such that the current sweep time is no longer possible, the analyzer wiIl automatically increase to the next fastest sweep time possible. If the measurement parameters are changed such that a faster sweep time is possible, the analyzer will not alter the sweep time while in this mode.

Auto Sweep Time Mode

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When this mode is active, the softkey label reads ~s~~~.~~~~~~:,;, - This mode is engaged

whenever you enter @ (XJ as a sweep time. Auto sweep time continuously maintains the fastest sweep time possible with the selected measurement parameters

Minimum Sweep Time

The minimum sweep time is dependent on the following measurement parameters:

nthe number of points selected

nIF bandwidth

nsweep-to-sweep averaging in dual channel display mode

nerror-correction

ntype of sweep

In addition to the parameters listed above, the actual cycle time of the analyzer is also dependent on the following measurement parameters:

nsmoothing

nlimit test

ntrace math

nmarker statistics

Application and Operation Concepts 6-17