HP 8753E manual Power Range Transitions in the Automatic Mode

Note After measurement calibration, you can change the power within a range and still maintain nearly full accuracy. In some cases better accuracy can be achieved by changing the power within a range. It can be useful to set different power levels for calibration and measurement to minimize the effects of sampler compression or noise floor.

If you decide to switch power ranges, the calibration is no longer valid and accuracy is no longer specified. However, the analyzer leaves the correction on even though it’s invalid.

The annotation C? will be displayed whenever you change the power after calibration.

TEST	PORT
POWER (dBm)
		/
+5	--	A								RANGE NUMBER
		0;	1	2	3	4	5	6	7
o--		/	i,	,	I	I	I	I	I	b

-5

-1 0

- 2 5

EXAMPLE.

WILL SET RANGE 3

B AOJ. ALC F O R T H I S L E V E L

I K N :

- 6 0

- UPPER RANGE I L I M I T

“OPT I MUM

RANGE”

- LOWER RANGE L I M I T

pg6154d

Figure 6-6. Power Range Transitions in the Automatic Mode

Applisation and Operation Concepts 6.15