HP 8753E manual Ib Decrease the Frequency Span, Lb Set the Auto Sweep Time Mode, Option 006

3. Then switch to stepped list mode:

nIf there is no difference between the measurements in either list mode, then use the swept list mode.

nIf the memory trace indicates that there is more attenuation in swept list mode, it may be due to IF delay. You can usually remedy this problem by increasing the sweep time.

Note IF bandwidths of 30 to 10 Hz cause the sweep (or that segment of the sweep) to be stepped, thus eliminating IF delay.

!Ib Decrease the Frequency Span

The hardware of the network analyzer sweeps the frequency range in separate bands, where switching from band to band takes time. Modify the frequency span to ehminate as many band switches as possible while maintaining measurement integrity. Refer to the following table to identify the analyzer’s band switch points:

‘lhble 5-5. Band Switch Points

I		Band	I	Frequency Span
				.Ol MHz to .3 MHz
				.3 MHz to 3.3 MHz
				3.3 MHz to 16 MHz
				16 MHz to 31 MHz
				31 MHz to 61 MHz
				61 MHz to 121 MHz
				121 MHz to 178 MHz
				178 MHz to 296 MHz
				296 MHz to 536 MHz
				536 MHz to 893 MHz
				893 MHz to 1.607 GHz
				1.607 GHz to 3 GHz
				3 GHz to 4.95 GHz
1	12 (Option 006)		1
				4.95 GHz to 6 GHz
1	13 (Option 006) 1

lb Set the Auto Sweep Time Mode

Auto sweep time mode is the default mode (the preset mode). This mode maintains the fastest sweep speed possible for the current measurement settings.

.~.:::...:::::.:::::.: .. ..::.;:.r ..:. .. :,>:.:.:.q:....:......I.....:I ............

.......

n press IMenu) ~~~~,‘~~~ @ @J to re-enter the auto mode.

......................... ................... ................................. ...... ......

Optimizing Measurement Results 5-51