Agilent Technologies 8590L Service Manual page 60

2 dB Check
13.Press the following analyzer keys.
14.Set the amplitude of the synthesizer/level generator to −17 dBm.
15.Press the following analyzer keys.
16.MKR ∆ amplitude reading should be 0.0 ±0.01. If it is not, repeat
17.Set the analyzer by pressing
18.Set the amplitude of the synthesizer/level generator to −15 dBm.
19.Press
20.Record the MKR ∆ amplitude reading in
4 and 8 dB Step Error
21.Repeat
Table 2-2 A12 Amplitude Control Assembly Attenuator Errors
Synthesizer Settings (dBm)
Attenuator Attenuator
OFF
−19
−17
−18
−19
Chapter 2
−dBm
, 16,
AMPLITUDE
PEAK SEARCH
,
MARKER DELTA
MKR FCTN, MK TRACK ON OFF
step 15.
on the analyzer.
MKR
attenuator step error of the A12 amplitude control assembly.
step 13 to step 20
Table 2-2 for synthesizer values and analyzer reference-level values.
Reference Level Settings
Attenuator
ON OFF
−18 −18
−15 −16
−14 −17
−11 −18
.
MARKER DELTA
(ON)
AMPLITUDE
for attenuator steps 4 dB and 8 dB. Use
(dBm)
Attenuator
ON
−17
−14
−13
−10
Making Adjustments
6. Cal Attenuator Error
−dBm
, 14, .
Table 2-2. This is the 2 dB
Attenuator Error
Step (dB)
1 ____________
2 ____________
4 ____________
8 ____________
61