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14. Residual
Responses Test
Specification
Description
Equipment
Procedure
Note
signal present at input) Option 100:
(SIGNAL INPUT 1 only).
Option 400:
The spectrum analyzer is checked for residual responses across its
no
frequency range with
signal applied to the input and 0 dB input
attenuation.
50 Ohm Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 11593A
1.
Press
ET].
PRES
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
ET).
PRES
5.
Disconnect CAL OUTPUT from analyzer. Terminate SIGNAL
INPUT 2 with a 50 ohm coaxial termination.
6. Key in control settings as follows:
(FREQUENCY)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...50 MHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60 dBm
]
LEVEL
(
) .
CENTER FREQUENCY
CF
STEP SIZE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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
14. Residual Responses Test
.25 MHz
.45 MHz
Performance Tests 2-47
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