Chapter 3 3-7
Functional Testing
Displayed Average Noise Level
7. Press the following keys on the analyzer:
BW/Avg, 1 kHz
Video BW Auto Man, 30 Hz
Single
Wait for the sweep to finish.
8. Press the following keys on the analyzer:
Display, Display Line (On)
Adjust the display so that it is centered on the average trace noise,
ignoring any residual responses.
9. Record the display line amplitude setting as TR Entry 1 (TR Entry
16 for a 75 Ω Input) in Table 3-1. The Average Noise Level should be
less than the Maximum for the appropriate input impedance.
Procedure (501 MHz to 1.0 GHz) E4401B and E4411B
1. Press the following keys on the analyzer:
Sweep, Sweep (Cont)
FREQUENCY, Start Freq, 501 MHz
Stop Freq, 1.0 GHz
BW/Avg, 1 MHz
Video BW Auto Man, 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 3 sweeps, then stop).
3. Press Peak Search, and record the frequency in the Measured
Frequency column (b) in Table 3-1 for 501 MHz to 1.0 GHz.
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