Anritsu S412E Maintenance Manual page 25

Chapter 3 — Spectrum Analyzer Verification
Residual Spurious Test with Preamp On
19. Touch the Pre Amp On/Off submenu button to turn it on.
20. Touch the Freq main menu button and set the Start Freq to 10 MHz.
21. Set the Stop Freq to 1.6 GHz.
22. Touch the BW main menu button and set the RBW to 10 kHz.
23. Touch the VBW submenu button and set the VBW to 1 kHz.
24. Wait until one sweep is completed.
25. Touch the Marker main menu button and then the Peak Search submenu button.
26. Verify that Marker 1 amplitude is < –90 dBm.
If a spur larger than –90 dBm appears, wait another full sweep and observe whether the spur
Note re-appears at the same point on the second sweep. If the spur does not appear at the same point on
the second sweep, then the spur on the first sweep was not real.
27. Record the Marker 1 amplitude reading in
with Preamp On" on page
28. Repeat Step 20 through
record results in
S412E MM
A-3.
Step 27 for the 1.6 GHz to 6 GHz frequency band if Option 6 is installed, and
Table A-4.
PN: 10580-00324 Rev. N
Table A-4, "Spectrum Analyzer Residual Spurious Response
3-3 Residual Spurious Response
3-5