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Chapter 2 123
Performance Verification Tests
15. Reference Level Accuracy: Agilent E4402B, E4403B, E4404B, E4405B, E4407B, and
E4408B.
Linear Scale, Digital Bandwidths, Option 1DR
NOTE If the analyzer is an E4404B/E4405B/E4407B that is not equipped with
Option 1DR (narrow resolution bandwidths) or an E4403B/E4408B
(with or without Option 1DR), skip to the next section (Post-Test
Instrument Restoration).
1. On the analyzer, press the following keys:
SPAN, 150 Hz
BW/Avg, 10 Hz
Video BW, 1 Hz
2. Set the 1 dB step attenuator to place the signal peak 1 to 3 divisions
below the reference level.
3. On the analyzer, press the following keys:
Single
Peak Search
(or Search)
Marker, Delta
4. Set the 10 dB step attenuator and analyzer reference level according
to Column 1 and Column 4 of Table 2-27. At each setting, do the
following:
a. Press
Single on the analyzer.
Table 2-26 Linear Mode, Analog Bandwidths Worksheet
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
10 dB
Attenuator
Nominal
Attenuation
(dB)
10 dB
Attenuator
Actual
Attenuation
(dB)
Actual
Attenuator
Step
(dB)
Analyzer
Reference
Level
(dBm)
Analyzer
Marker
Delta
Amplitude
(dB)
Test
Record
Entry
20 0 (Ref)
−20 0 (Ref) (Ref)
10
−10 17)
0018)
30
−30 19)
40
−40 20)
50 −50 21)
60
−60 22)
70
−70 23)
80
−80 24)