3-36 Chapter3
Functional Testing
Reference Level Accuracy
4. Now that the reference has been established in step 4, adjust the
synthesized sweeper power level and the analyzer reference level
according to Table 3-5. (The synthesized sweeper output power and
the analyzer’s reference level will be changed in 10 dB steps.)
5. On the analyzer, press
Single and wait for a sweep to finish. Press
Peak Search, Marker, Delta.
6. For each new synthesized sweeper power level and analyzer
reference level change, press the following keys on the analyzer:
Single
Peak Search
Record the Analyzer Marker Amplitude reading in Table 3-5.
Table 3-5
Analyzer
Reference Level
Synthesized
Sweeper Amplitude
(dBm)
Minimum
(dB)
Analyzer
Marker ∆
Amplitude
(dB)
Maximum
(dB)
dBm dBmV
–30 21.76 Reference + _____ 0 (Reference) 0 (Reference) 0 (Reference)
–20 31.76 Reference + (10 dB) 8.60 11.40
–10 41.76 Reference + (20 dB) 18.60 21.40
–40 11.76 Reference + (–10 dB) –11.40 –8.60
–50 1.76 Reference + (–20 dB) –21.40 –18.60
–60 – 8.24 Reference + (–30 dB) –31.40 –28.60
–70 –18.24 Reference + (–40 dB) –42.0 –38.0
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