Agilent Technologies 11970 Series Guia do Utilizador descarregar pdf (Página 96)

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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Agilent Technologies 11970 Series Guia do Utilizador Página 96