Procedure - Keysight n9020a Service Manual

Functional Tests
BBIQ Input Frequency Response (Option BBA only)

Procedure

1. On the X-Series analyzer, press Mode, IQ Analyzer (Basic). Press Mode
2. Press Input/Output, I/Q (to change to I/Q inputs), I/Q (to bring up the I/Q
3. Press I/Q Path, I+jQ, I Setup, Differential (On). Press Return, Q Setup, Q
4. Preset the RF Signal Generator and set the controls as follows:
Once the RF Signal Generator's Amplitude is set, do not change the RF Signal
NOTE
Generator's Amplitude setting during the rest of this procedure.
5. Connect the longer BNC cable between the RF Signal Generator's RF
6. Connect the 50 Ohm termination to the I input of the X-Series analyzer,
7. Press Mode Preset on the X-Series analyzer. Press System, Show,
8. If none of the options listed in
9. If N9020A-B25 is present, but N9020A-S40 and N9020A-SU1 are not
10.If either N9020A-S40 or N9020A-SU1 is present, the maximum IQ
11.Press FREQ on the X-Series analyzer and set the Center Freq equal to one
12.Press SPAN on the X-Series analyzer and set the Span equal to the
13.Press BW on the X-Series analyzer and set the Res BW to 100 kHz.
Preset.
input menu), I/Q Cable Calibrate. Follow the instructions on screen. Use
the short BNC cable listed above to perform the calibration. This process
has several steps and will take about 3 minutes to perform.
Same as I (Yes).
Frequency 250 kHz
Amplitude –10 dBm
RF On
OUTPUT and the I input of the X-Series analyzer, see
see Figure 16-7
System. Note if either of the options listed below are present:
N9020A-B25
N9020A-S40
N9020A-SU1
bandwid th is 10 MHz
present, the maximum IQ bandwidth is 25 MHz
bandwid th is 40 MHz.
half the maximum IQ band width determined above. For example, if the
maximum IQ bandwidth is 40 MHz, set the Center Freq to 20 MHz.
maximum IQ bandwidth determined above.
step 7 are present, the maximum IQ
630
Figure 16-7