Residual Spurious Test With Preamp Off - Anritsu Spectrum Master MS2723B Maintenance Manual

2-2 Spectrum Analyzer Function Verification

Residual Spurious Test with Preamp Off

Procedure:
1. Connect the 50 ohm termination
2. Set the MS2723B or MS2724B to Spectrum Analyzer mode and then preset the instrument.
3. Press the Amplitude key, then press the Reference Level soft key.
4. Use the keypad to enter –40 and press the dBm soft key.
5. Press the Atten Lvl soft key and enter 0, then press the dB soft key.
6. Ensure that the Pre Amp On/Off soft key is in the Off position. If the preamp is On, then press the
Pre Amp On/Off soft key to turn it Off.
7. Press the Shift key and then press the Sweep (3) key, then press the Detection and the Peak soft keys.
8. Press the Freq key and press the Start Freq soft key.
9. Use the keypad to enter 9, and press the kHz soft key.
10. Press the Stop Freq soft key, enter 100, and press the kHz soft key.
11. Press the BW key and press the RBW soft key.
12. Use the keypad to enter 3, and press the kHz soft key.
13. Press the VBW soft key and use the keypad to enter 300, then press the Hz soft key.
14. Wait until one sweep is completed.
15. Press the Marker key and press the Peak Search soft key.
16. Record the Marker 1 amplitude reading and verify that it is
Analyzer Residual Spurious (Preamp Off)" on page
If a spur with amplitude larger than –90 dBm occurs, then wait another full sweep and observe
Note whether the spur occurs at the same point on the second sweep. If the spur does not occur at the
same point on the second sweep, then the spur on the first sweep was not real.
17. Repeat Step 8 through Step
in Table A-13 and verify that the readings are within the listed specifications.
2-16
(Figure 2-7) to the Spectrum Analyzer RF In connector.
16 for the other Start and Stop frequencies with the RBW and VBW as listed
PN: 10580-00165 Rev. D
≤
–90 dBm in
A-5.
Models MS2723B and MS2724B MM
Performance Verification
Table A-13, "Spectrum