Spectrum Analyzer Residual Spurious Response; Residual Spurious Test With Preamp On - Anritsu Spectrum Master MS2723B Maintenance Manual

Performance Verification
Procedure (Preamp Off):
13. Press the Amplitude soft key.
14. Set Reference Level to –20 dBm, and set the preamp to Off.
15. Repeat Step 7 through Step
Table A-11, "Spectrum Analyzer DANL (Preamp Off)" on page
16. Enter the calculated 1 Hz RBW values in

Spectrum Analyzer Residual Spurious Response

The following test verifies the residual spurious response of the Spectrum Analyzer. This test is performed
using the positive peak detection mode. This test has two parts:
•

Residual Spurious Test with Preamp On

• Residual Spurious Test with Preamp Off
Residual Spurious Test with Preamp On
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 –50 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 On position. If the preamp is Off, then press the
Pre Amp On/Off soft key to turn it On.
7. Press the Shift key and then press the Sweep (3) key, then press Detection and then the Peak soft key.
8. Press the BW key and press the RBW soft key.
9. Use the keypad to enter 10, and press the kHz soft key.
10. Press the VBW soft key and use the keypad to enter 1, then press the kHz soft key.
11. Press the Freq key, and press the Start Freq soft key.
12. Use the keypad to enter 100, and press the kHz soft key.
13. Press the Stop Freq soft key, enter 10, and press the MHz soft key.
14. Wait until one sweep is completed.
15. Press the Marker key, and press the Peak Search soft key.
16. Verify that the Marker 1 amplitude reading is
Analyzer Residual Spurious (Preamp On)" on page
If a spur with amplitude larger than –100 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 11 through Step
Models MS2723B and MS2724B MM
11 for the preamp Off measurements, recording the measured values in
Table A-11.
(Figure 2-7) to the Spectrum Analyzer RF In connector.
≤
–100 dBm and record it in
16 for the other Start and Stop frequencies that are listed in
PN: 10580-00165 Rev. D
2-2 Spectrum Analyzer Function Verification
A-5.
A-5.
Table A-12, "Spectrum
Table A-12.
2-15