# Measurements using spectrum analyzer

I need to measure the following characteristics of a frequency synthesizer using a spectrum analyzer:

• Frequency range: 2.286 GHz to 2.346 GHz

• Output power: -2.5 dBm to 2.5 dBm

• SSB phase noise: typical: -122 dBc/Hz, maximum: -116 dBc/Hz, at 100 kHz offset

• Integrated SSB phase noise: -45 dBc, at 100 Hz to 1MHz

• Reference spurious suppression: typical: -106 dBc, maximum: -80 dBc, with reference frequency = 15 MHz

• Non-harmonic spurious suppression: -90 dBc

• Harmonic suppression: typical: -30 dBc, maximum: -20 dBc

Am I able to measure all those specifications using a Rohde and Schwarz FSC6 model .06: datasheet ?

I can choose any spectrum snalyzer in the world, but I was told that Rohde and Schwarz is the one of the best brands, and that's the one I found more useful for the specifications I need to measure, because of its frequency range and phase noise (I don't know if I'm reading it correctly). What do you think?

• Will the R&S provide the integrated phase noise measurement? Or must you export the phase-noise, and perform the integration? Dec 12, 2018 at 4:44
• With -116dBc/rtHz at 100KHz, if we assume flat DC to 1MHz, then at 3dB increase per doubling of the bandwidth (-113dBc at 2Hz BW, -110 at 4Hz, -107 at 8Hz, -107 + 30 = -77dBc for 8,000 Hz BW, -77 + 21 = -56dBc at 1MHz integrated bandwidth, you've got some margin for high levels of 1/F closein (and 1/F^2). Dec 12, 2018 at 4:48
• I don't know how to do the integrated phase noise measurement, but I still didn't get there. I supposed that there would be an option in the S.A. that says "Integrated Phase Noise" or something like that :S. What do you think about the Signal Analyzer E5052B? I think that instrument can measure the phase noise and, hopefully, the integrated phase noise Dec 12, 2018 at 5:58
• Would you please stop saying that you have "measure" things? Your assignment is to write up the procedures for measuring these things. If you would just say thay, then you could stop having to explain that you can "buy any piece of equipment no matter how expensive." Just for pete's sake say that you writing up the procedures, and can base them on any piece of equipment available.
– JRE
Dec 12, 2018 at 6:22
• You also haven't voted for or accepted the answers to all of your other questions on this subject.
– JRE
Dec 12, 2018 at 6:24