Keysight Technologies X Series - Page 42

38 Chapter 7
Frequency Response (Flatness), Preamp On
Procedure
15.Repeat step 7 through step 14 and complete the remainder of Table 7-1
for the frequency range of your preamp.
16.Compute the measurement error (Meas
Error
= Meas
Amp
− Power
Meter
).
17.Compute the flatness error normalized to 50 MHz:
(Meas
Error
− Meas
Error
@ 50 MHz)
18.Enter the computed flatness error value into the Flat
Norm
column of Table
7-1.
19.Compare the value of Flat
Norm
to the test limit.
Table 7-1 Frequency Response (Flatness) Results
Center
Frequency
Analyzer
Amplitude
Meas
amp
Power Meter
Measurement
Power
meter
Meas Error
Meas
error
Flatness
Normalized
to 50 MHz
Flat
Norm
Flatness Error
Test Limits
(dB)
50 MHz 0 Ref
1 GHz ±2.0 dB
2 GHz ±2.0 dB
3 GHz ±2.0 dB
3.5 GHz ±2.0 dB
4 GHz ±3.0 dB
6 GHz ±3.0 dB
8 GHz ±3.0 dB
9 GHz ±3.5 dB
11 GHz ±3.5 dB
13 GHz ±3.5 dB
14 GHz ±4.0 dB
17 GHz ±4.0 dB
20 GHz ±4.0 dB
23 GHz ±4.0 dB
26 GHz ±4.0 dB
29 GHz ±4.0 dB
32 GHz ±4.0 dB
35 GHz ±5.0 dB
38 GHz ±5.0 dB
41 GHz ±5.0 dB