HP 8753E manual Compensating for Directional Coupler Response, Deleting Frequency Segments

Deleting Frequency Segments

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I- Access the “Segment Modify Menu” by pressing @ :Pm .&l&i ~~~?~~~~~~~~~~~,								,,,
.::. .,.:..:.:.: ;,.,....,. :.:.::.: .,.,.,. :.:.:..“‘:..	,,. ,. ,..,.,.,.,.,.;	(or ~~~~~~~~~~~-~~~~~ B.;		::.::...i	a........../	...si.ii/.....%A ,. ,,.....:,............._	::...::...:..;;.:;..,,.....,.,, ,..,
I,~~~~~~~~~~~~~~~~:~~			,	depending		on where the segment		is
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that you want to delete).

2. Identify the segment that you want to delete by pressing &&##$%! and using the @) and @) keys to locate and position the segment next to the pointer (>), shown on the display. Or press ~~~~~~~: and enter the segment number followed by (XJ

3. press ‘D&j&-

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The analyzer deletes the segment and moves the remainder of the segments up one number.

4.You could also delete all the segments in a list by pressing ~~,:~~~~~~ ~~. 5- Press @I# when you are Wished modifying the segment list.

Compensating for Directional Coupler Response

If you use a directional coupler to sample power in your measurement conhguration, you should enter the coupled arm power loss value into the power loss table, using the following procedure. You can enter the loss information in a single segment, and the analyzer will assume that the value applies to the entire frequency range of the instrument. Or, you can input actual measured power loss values at several frequencies using up to 55 segments, enhancing power accuracy.

The analyzer shows the notation EMPTY, if you have not entered any segment information.

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2. To create thefirst segment, press @$~ #&#V@K!J~ and enter a frequency of a correction factor data point, followed by the appropriate key: @J Irln_u Lk/m.

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3.Press ~&I~~ and enter the power loss that corresponds to the attenuation of the directional

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coupler (or power splitter) at the frequency that you have entered in the previous step. Complete the power loss entry by pressing (XJ @@.

Note Remember to subtract the through arm loss from the coupler arm loss before entering it into the power loss table, to ensure the correct power at the output of the coupler.

4.Repeat the previous two steps to enter up to 55 frequency segments, depending on the required accuracy.

You may enter multiple segments in any order because the analyzer automaticalIy sorts them and lists them on the display in increasing order of frequency.

If you only enter one frequency segment, the analyzer assumes that the single value is valid over the entire frequency range of the correction.

5.After you have entered all the segments, press ~&J&$: ?... ..............i....-

6. Press Lcall	..............
	~~~~~~~~~,~~~ to activate the power loss compensations
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5-36 Optimizing Measurement Results