HP 8753E manual Logarithmic Frequency Sweep Hz, Stepped List Frequency Sweep Hz, Segment Menu

Logarithmic Frequency Sweep (Hz)

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The Q,@$~ softkey activates a logarithmic frequency sweep mode. The source is stepped

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in logarithmic increments and the data is displayed on a logarithmic graticule. This is slower than a continuous sweep with the same number of points, and the entered sweep time may therefore be changed automatically. For frequency spans of less than two octaves, the sweep type automatically reverts to linear sweep.

Stepped List Frequency Sweep (Hz)

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me ::~~~~~~~~ softkey a&iv&es a Steppe-J fist frequency sweep, one of two l&$ ii..r.,..:;;.i...i:,..:,..,.......s..;;>;:;.......A'.....Z..<.>A...A..~~.;;.i.~.;........~~.....;;:.:..:;.; .i<A>....iz..A...:.::..:.i ~.~.~.~../.i

frequency sweep modes. The stepped list mode allows the analyzer to sweep a list of arbitrary frequency points This list is delined and modified using the edit list menu and the edit subsweep menu. Up to 30 frequency subsweeps (called “segments”) of several different types can be specified, for a maximum total of 1632 points. One list is common to both channels. Once a frequency list has been defined and a measurement calibration performed on the full frequency list, one or ail of the frequency segments can be measured and displayed without

loss of calibration.

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men the ~~~~~~~~~~~~~keyispressed,the n&work analyzer sorts tithe defied :.... i.;i.>,i,,.:..., ;.7:i..>.a.......:,...;.:,.:: ..,,. .v;.;..:: .A.. _;;;;;;;;~;;;;;;;...;;;;;; ....A..

frequency segments into CW points in order of increasing frequency. It then measures each point and displays a single trace that is a composite of ail data taken. If duplicate frequencies exist, the analyzer makes multiple measurements on identical points to maintain the specified number of points for each subsweep. Since the frequency points may not be distributed evenly across the display, the display resolution may be uneven, and more compressed in some parts of the trace than in others. However, the stimulus and response readings of the markers are always accurate. Because the list frequency sweep is a stepped CW sweep, the sweep time is slower than for a continuous sweep with the same number of points

Segment Menu

The ~~~~~~~~~~~,~~~. softkey protides acceSS to *e segment menu, wK* flows you
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to select any single segment (~~~~~~~~~~~~,) h the frequency l&t or a of the segments
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~~~~~~~)inthefrequencylist.
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See below for information on how to enter or modify the list frequencies. If no list has been

entered, the message CAUTION : LIST TABLE EMPTY	is displayed. A tabular printout of the
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frequency list data can be obtained using the ~~~~~~~~~~ function in the copy menu.

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This menu is used to edit the list of frequency segments (subsweeps) delined with the edit subsweep menu, described next. Up to 30 frequency subsweeps can be specified, for a maximum of 1632 points. The segments do not have to be entered in any particular order: the analyzer automatically sorts them and shows them on the display in increasing order of start frequency. This menu determines which entry on the list is to be modified, while the edit subsweep menu is used to make changes in the frequency or number of points of the selected entry.

Application and Operation Conccptc 6-23