3-9 Amplitude Accuracy Spectrum Analyzer Performance Verification
3-28 PN: 10580-00303 Rev. D Model MS20xxB MM
26. Set the power meter to display Channel B. Press the Sensor key, the Cal Factor soft key, and then the
Freq soft key. Use the numeric keypad to enter the value matching the frequency of MG3692X as the
input signal frequency. This sets the power meter to use the proper power sensor cal factor. Press the
System key to display the power reading.
27. Adjust the MG3692X output power so that the power meter displays a reading which matches the
Sensor B reading for –30 dBm in the following tables in Appendix A.
• MS2034B – Table A-19, “Spectrum Analyzer Amplitude Accuracy Across Frequency Setup Table”
on page A-9
• MS2035B – Table A-44, “Spectrum Analyzer Amplitude Accuracy Across Frequency Setup Table”
on page A-22
28. On the VNA Master, press the Amplitude main menu button and then the Reference Level submenu
button.
29. Use the numeric keypad to enter –20 and then press the dBm submenu button.
30. Press the Span main menu button.
31. Use the numeric keypad to enter 10 and then press the kHz submenu button.
32. Press the Freq main menu button and then the Center Freq submenu button.
33. Use the numeric keypad to enter 100 and then press the kHz submenu button.
34. Press the Amplitude main menu button and then the Atten Lvl submenu button.
35. Use the numeric keypad to enter 0 and then press the dB submenu button. This set the Attenuation Level
to 0 dB.
36. Press the Marker main menu button and then the Peak Search submenu button.
37. Record the Marker 1 amplitude reading in Table A-20, “Spectrum Analyzer Amplitude Accuracy Across
Frequency – 100 kHz” on page A-9 for MS2034B or Table A-45, “Spectrum Analyzer Amplitude Accuracy
Across Frequency – 100 kHz” on page A-22 for MS2035B in Appendix A.
38.
Calculate the deviation by subtracting –30 dBm from the Marker 1 amplitude reading. Record the result
in Table A-20 for MS2034B or Table A-45 for MS2035B in Appendix A.
39. Verify the deviation value is within the specification.
40. Repeat Step 34 through Step 39 for Atten Lvl of 5 dB, 10 dB, and 20 dB.
41. Adjust the MG3692X output power so that the power meter displays a reading which matches the
Sensor B reading for –2 dBm in Table A-19 for MS2034B or Table A-36 for MS2035B in Appendix A.
42. On the VNA Master, press the Amplitude main menu button and then the Reference Level submenu
button.
43. Use the numeric keypad to enter 10 and then press the dBm submenu button.
44. Repeat Step 34 through Step 39 for Atten Lvl of 30 dB, 40 dB, 50 dB, and 55 dB. Calculate the deviation
by subtracting –2 dBm from Marker 1 amplitude reading and record the result in Table A-20 for
MS2034B or Table A-45 for MS2035B in Appendix A.
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