3-18 Chapter3
Functional Testing
Displayed Average Noise Level
2. Press the following keys on the analyzer:
Single
BW/Avg, Average (On), 3, Enter
Single
Wait until AVG 3 is displayed to the left of the graticule (the
analyzer will take 3 sweeps and then stop).
3. Press Peak Search. Record the frequency in the Measured Frequency
column (j) in Table 3-1 for 12.01 GHz to 13.2 GHz.
4. Press the following keys on the analyzer:
Sweep, Sweep (Cont)
BW/Avg, Average (Off)
BW/Avg, Resolution BW (Auto)
Video BW (Auto)
SPAN, 50 kHz
FREQUENCY
5. Press Center Freq. Set the center frequency of the analyzer to the
frequency recorded in the Measured Frequency column (j) in
Table 3-1 for 12.01 GHz to 13.2 GHz.
6. Press the following keys on the analyzer:
BW/Avg, 1 kHz
Video BW Auto Man, 30 Hz
Single
Wait for the sweep to finish.
7. Press the following keys on the analyzer:
Display, Display Line (On)
Adjust the display line so that it is centered on the average trace
noise, ignoring any residual responses.
8. Record the display line amplitude setting as TR Entry 13 in
Table 3-1. The Average Noise Level should be less than the
Maximum.
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