Agilent Technologies HP 8566B Specifications Page 44

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6. Log Scale Switching Uncertainty Test
6.
Log
Scale
Switching
Uncertainty
Tkst
Related
Adjustment
Specification
Description
Equipment
Procedure
Video Processor Adjustments
f0.5
dB
(uncorrected;
20”
to
30°C)
The log scale is stepped from 1 dB/DIV to 10
dB/DIV
and the variation
in trace amplitude from the 1 dB/DIV setting at each step is measured.
None required
1.
Press
@ZZiZj.
2.
Key in analyzer settings as follows:
[CENTER
FREQUENCY]
......................................
,100 MHZ
(FREQUENCY
SPAN)
..........................................
100
kHz
REFERENCE LEVEL]
&TiQ
.........................................
.-8
dBm
....................................................
.30
kHz
3.
Press LOG (ENTER dB/DIv) and key in a log scale of 1
dB
per
division.
4.
5.
Connect CAL OUTPUT to RF INPUT.
Press MARKER (PEAK SEARCH] and
(MKR
+
REF
LVL).
Record the
marker amplitude (upper right of display) in
‘Iable
2-8.
6.
Step up through the log scales with
@.
At each step, press
MARKER [PEAK SEARCH], then record the marker amplitude in
Table
2-8. Refer to Figure 2-8.
7.
Subtract the marker amplitude at the 1 dB/DIV setting from the
marker amplitudes recorded for the 2, 5, and 10 dB/DIV settings to
obtain the amplitude deviations. The deviation should be less than
f0.5
dB
for each log scale.
Performance Tests 2-19
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