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Chapter 4 127
ESA Functional Tests
Displayed Average Noise Level
ESA Functional Tests
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 3 (TR Entry 22 or 23 for a 75
Ω
Input) in Table 4-1 on page 138. The average noise level should be less than the
Maximum for the appropriate input impedance.
Procedure (10 MHz to 1 GHz) E4402B, E4403B, E4404B, E4405B,
E4407B, and E4408B
1. Press System, Power On/Preset, Preset Type (Factory), Preset on the analyzer. Wait for the
preset routine to finish. Set the analyzer by pressing the following keys:
FREQUENCY, Start Freq, 10, MHz
Stop Freq
, 1.0, GHz
AMPLITUDE
, –70, dBm
Attenuation
(Man), 0, dB
BW/Avg
, Res BW, 1, MHz
Video BW
, 10, kHz
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 three
sweeps, then stop).
3. Press
Peak Search. Record the marker frequency next to your analyzer model in the
Measured Frequency column as entry (f) or (g) in Table 4-1 on page 138 for 10 MHz to
1.0 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 (f) or (g) in Table 4-1 on page 138 for 10 MHz
to 1.0 GHz.