2-2 Spectrum Analyzer Function Verification Performance Verification 1
2-6 PN: 10580-00177 Rev. D MS2721B MM
Spectrum Analyzer SSB Phase Noise Verification
This test verifies the single sideband (SSB) phase noise of the Spectrum Analyzer in Spectrum Master Model
MS2721B.
Required Equipment:
• Anritsu MG3692x Synthesized Signal Generator
• Frequency Reference Symmetricom Rubisource T&M
• Spectrum Master Model MS2721B
Procedure:
1. Connect the external 10 MHz Reference to the Anritsu MG3692x Synthesized Signal Generator as shown
in Figure 2-1.
2. Connect the output of the synthesized signal generator to the Spectrum Analyzer RF In connector of the
MS2721B.
3. Set the MG3692x output to 7.09 GHz CW, with an RF output level of +13 dBm.
4. Verify that the MS272xB is in the Spectrum Analyzer mode. Preset the instrument.
5. Press the Amplitude function hard key, then set the Reference Level to 0 dBm.
6. Press the Atten Lvl soft key and enter 15 dB.
7. Press the Freq soft key and set the Center Frequency to 7090.05 MHz.
8. Press the Span soft key and set the span to 110 kHz.
9. Press the BW function hard key and set the RBW to 1 kHz.
10. Press the VBW soft key and set the VBW to 3 Hz.
11. Press the Shift key and then press the Trace (5) key.
12. Press the Trace A Operations soft key, and set the # of Averages to 7.
13. Wait until the Trace Count (left side of display) displays 7/7.
14. Press the Marker key and press the Peak Search soft key.
15. Press the Delta On/Off soft key to turn Delta ON.
16. Use the keypad to enter 10 and press the kHz soft key.
17. Subtract 30 from the dB value that is shown on the marker readout to convert the value to dBc/Hz (for
example, if the marker reads –80 dB, the value becomes –110 dBc/Hz). Record the dBc/Hz value in
Table A-2, “Spectrum Analyzer SSB Phase Noise Verification” on page A-2.
18. Repeat Step 16 and Step 17
for 20 kHz marker delta, 30 kHz marker delta, and 100 kHz marker delta.
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