HP 8568B 14.Residual Responses Test, Option 400:, Note, Equipment, Description, Specification, Procedure 1. Press (INSTR PRESET]

14. Residual Responses Test

14.Residual Responses Test

Specification c-105 dBm for frequencies >500 Hz with 0 dB input attenuation (no signal present at input) Option 100:

c-99 dBm for frequencies >500 Hz with 0 dB input attenuation (SIGNAL INPUT 1 only).

Option 400:

c-95 dBm for frequencies >500 Hz with 0 dB input attenuation. c-105 dBm for frequencies >2.5 kHz with 0 dB input attenuation.

Description The spectrum analyzer is checked for residual responses across its frequency range with no signal applied to the input and 0 dB input attenuation.

Equipment 50 Ohm Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 11593A

Procedure 1. Press (INSTR PRESET].

2.Connect CAL OUTPUT to SIGNAL INPUT 2.

3.Press IRECALL) @J Adjust AMPTD CAL for a MARKER amplitude of -10.00 dbm f0.02 dB.

4.Press QNSTR PRESET).

5.Disconnect CAL OUTPUT from analyzer. Terminate SIGNAL INPUT 2 with a 50 ohm coaxial termination.

6.Key in control settings as follows:

						50	MHz
(.FREQUENCY). . . . . . . . . . .
						-60 dBm
CREFERENCE LEVEL] .
(	CENTER FREQUENCY) .					.25 MHz
						45 MHz
	CF	STEP	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..SIZE)
	km, . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .				1 kHz
(@EGG-)		. . . . . . . .		. .		. . . . . . . . . . . . . . . . . . . . . . . . . . ..3	kHz
(ATTEN) .		. . . . . . . .		.	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		0 dB

7.Press DISPLAY LINE CENTER_) and key in -105 dBm.

8.Reduce [RESBW) or [VlDEOBW), if necessary, for a margin of at least 4 dB between the noise trace and the display line (refer to Figure 2-24). Do not reduce either bandwidth to less than 300 Hz.

Note This test will require approximately 30 minutes to complete using the settings given in step 6. If the resolution bandwidth or video bandwidth are further reduced, a full band check of residual responses will take up to 15 hours to complete

Performance Tests 2 - 47