Chapter 2 — Spectrum Analyzer Verification 2-5 Spurious Response Verification
MS2720T MM PN: 10580-00342 Rev. D 2-7
2-5 Spurious Response Verification
(Second Harmonic Distortion)
The following test is used to verify the input related spurious response of the spectrum analyzer in the
MS2720T Spectrum Master.
Equipment Required for MS2720T with option MS2720T/709, MS2720T/713, or MS2720T/720
• Anritsu MG3692x Synthesized Signal Source (see equipment list for required options)
• Frequency Reference Symmetricom Rubisource T&M
• Anritsu 1030-96 50 MHz Low Pass Filter
• Anritsu 34RKNF50 50 ohm Adapter
• Anritsu 15NN50-1.5C RF Coaxial Cable
• BNC male to BNC male Coaxial Cable
Equipment Required for MS2720T with option 732 or 743
• All of the above, plus
• Anritsu 71693-R Ruggedized K(f) to N(f) Adapter
Procedure
1. Connect the 10 MHz reference source to the Anritsu MG3692x or MS3695B Synthesized Signal Source.
2. Turn on the 10 MHz reference source and the Anritsu MG3692x or MS3695B Synthesized Signal Source.
3. Set the MG3692x output to 50.1 MHz CW, with an RF Output Level of –30 dBm.
4. Connect one end of the 50 MHz Low Pass Filter to the output of the source and the other end to the
MS2720T RF Input with the coaxial cable.
5. Turn on the MS2720T.
6. Press the Shift key and then the Mode (9) key. Rotate the knob to highlight Spectrum Analyzer and then
press the Enter key to switch to Spectrum Analyzer mode.
7. Press the Shift key, the Preset (1) key, and then the Preset submenu key to reset to the default
starting conditions. Press the Shift key, the Sweep (3) key, Sweep Mode submenu key and then the
Performance submenu key.
8. Press the Amplitude main menu key and then press the Reference Level submenu key.
9. Use the keypad to enter –27 and press the dBm submenu key.
10. Press the Atten Lvl submenu key and enter 0, then press the dB submenu key.
11. Press the Freq main menu key and select the Center Freq submenu key.
12. Use the keypad to enter 50.1
and press the MHz submenu key.
13. Press the Span main menu key, use the keypad to enter 100, and select the kHz submenu key.
14. Press the BW main menu key and select the RBW submenu key.
15. Use the keypad to enter 1 and select the kHz submenu key.
16. Press the VBW submenu key. Use the keypad to enter 10 and then select the Hz submenu key.
17. Press the Amplitude main menu key.
18. Press the Detection submenu key, and then the Peak submenu key.
19. Press the Shift key and then press the Trace (5) key, then select the Trace A Operations submenu key.
20. Press the # of Averages submenu key, use the keypad to enter 5 and then press the Enter key.
21. Wait until the Trace Count displays 5/5.
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