Keysight Technologies N9030B Service Manual page 607

Functional Tests
BBIQ Input Frequency Response (Option BBA only)
Table 18-11 BBIQ Input Frequency Response, Q and Q Inputs
RF Signal
Generator
Frequency
12.5 MHz
15 MHz
17.5 MHz
20 MHz
22.5 MHz
24.9 MHz
30 MHz
35 MHz
39.9 MHz
26.Set the RF Signal Generator frequency to 250 kHz
27.Connect the BNC Cable between the RF Signal Generator RF Output and
28.Connect the 50 Ohm termination to the Q input on the X-Series analyzer,
29.Press Peak Search on the X-Series analyzer. Record the marker amplitude
30.Set the RF Signal Generator to each of the remaining frequencies listed in
31.In
32.Compare the Frequency Response values to the Test Limits.
N9030B PXA Signal Analyzer Service Guide
Q Input
Marker Frequency
Amplitude Response
Stop here if Maximum IQ Band wid th is 25 MHz
the Q input on the X-Series analyzer, see
see Figure 18-11
reading in Table 18-11
Table 18-11, up to the maximum IQ bandwid th of the X-Series analyzer. At
each frequency, do the following:
a. Press Peak Search
b. Record the marker amplitude reading in
at the current RF Signal Generator frequency
Table 18-10 and Table
each input by subtracting the Marker Amplitude at 250 kHz for that input
from the Marker Amplitude for each frequency greater than 250 kHz.
Frequency Response = Marker Amplitude (Freq > 250 kHz) – Marker Amplitude (250 kHz)
Q Input
Marker
Amplitude
Figure 18-11
for the Q Input at 250 kHz.
18-11, calculate the Frequency Response for
Test Limits
Frequency
Response
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
±1.75 dB
Table 18-11 for the Q Input
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