Chapter 4 145
ESA Functional Tests
Frequency Response (Flatness)
ESA Functional Tests
c. Tune the analyzer center frequency by pressing the ⇑ key or press FREQUENCY,
Center Freq, “n”, and MHz (where “n” is the next test frequency in Table4-3 on
page 145).
d. Press Peak Search.
e. Enter the power meter reading in the Power Meter Amplitude column.
f. Enter the analyzer reading in the Analyzer Amplitude column.
g. Compute the flatness error using the following equation and record the result s in the
Flatness Error column:
Flatness Error = Analyzer Amplitude – Power Meter Amplitude
The flatness error should be less than the specified amount.
Table4-3 Frequency Response Worksheet
Model Center
Freq
Analyzer
Amplitude Power
Meter
Amplitude
Flatness
Error Flatness
Error Test
Limits
(dB)
All Models 50 MHz ± 1.5
100 MHz ± 1.5
750 MHz ± 1.5
1250 MHz ± 1.5
1500 MHz ± 1.5
E4402B – E4408B 2000 MHz ± 1.5
2500 MHz ± 1.5
2999 MHz ± 1.5
E4402B – E4408B 4250 MHz ± 3.0
5750 MHz ± 3.0
6699 MHz ± 3.0
E4402B – E4408B 8000 MHz ± 3.5
9000 MHz ± 3.5
10000 MHz ± 3.5
11000 MHz ± 3.5
13199 MHz ± 3.5
E4407B & E4408B 14000 MHz ± 4.0
19000 MHz ± 4.0
24000 MHz ± 4.0
26500 MHz ± 4.5