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130 Chapter 4
ESA Functional Tests
Displayed Average Noise Level
ESA Functional Tests
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 marker frequency next to your analyzer model in the
Measured Frequency column as entry (k) or (l) in Table 4-1 on page 138 for 2.01 GHz to
3.0 GHz.
4. Press the following keys on the analyzer:
Sweep, Sweep (Cont)
BW/Avg, Average (Off)
BW/Avg, Res 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 as entry (k) or (l) in Table 4-1 on page 138 for 2.01
GHz to 3.0 GHz.
6. Press the following keys on the analyzer:
BW/Avg, Res BW, 1, kHz
Video BW
, 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. If the analyzer is an E4402B or E4403B, record the display line amplitude setting as TR
Entry 9 in Table 4-1 on page 138 Otherwise, record the display line amplitude setting as
TR Entry 10 in Table 4-1 on page 138 The Average Noise Level should be less than the
maximum.