Keysight N9000A - Procedure

Chapter 15 297
Functional Tests
Frequency Readout Accuracy
Procedure
1. Configure the equipment as shown in Figure 15-2. Confirm the analyzer’s
built-in auto alignment has been performed within the past 24 hours.
2. On the synthesized sweeper, press
PRESET, then set the controls as follows:
FREQUENCY, 1505, MHz
POWER LEVEL
, –10, dBm
3. Set up the signal analyzer by pressing:
Mode, Spectrum Analyzer
Mode Preset
Input/Output, More
, Freq Ref In, External
FREQ Channel
, Center Freq, 1505, MHz
SPAN X Scale, Span, 2990, MHz
Trace/Detector
, More, Detector, Sample
Single
4. Press Restart.
Press
Peak Search on the analyzer. If the instrument is functioning correctly,
the marker reading in the active function block will be between the values
listed in Table 15-2. Record the marker value in the Marker Frequency Readout
column in Table 15-2.
5. On the signal analyzer, change the span and center frequency as listed in Table
15-2.
6. Change the synthesized sweeper frequency to match the center frequency of the
analyzer.
7. Repeat step 4 through step 6 until the Marker Frequency Readout column of
Table 15-2 is complete.
Table 15-2 Frequency Readout Accuracy Results
Span
(MHz)
Center
Frequency (MHz)
Minimum
Marker Frequency
Readout
Maximum
2990 1505 1495.9 MHz 1514.1 MHz
127.2 1505 1504.56 MHz 1505.44 MHz
54.1 1505 1504.8122 MHz 1505.1878 MHz
7.95 1505 1504.97240 MHz 1505.0276 MHz
0.106 1505 1504.999630 MHz 1505.000370 MHz
1.98 517.59 517.58316 MHz 517.59684 MHz
1.98 832.50 832.49316 MHz 832.50684 MHz