John Furman

Another question, and I understand if you can't answer this, you'd have to know my radio; is it safe to connect the function generator directly to the radio's antenna port? Do I need a subcircuit inbetween the two to protect them?

I'm new to SINAD measurements and never taken one before. I need help setting up my Tektronix Spec. An. to measure SINAD values. This procedure is not stated in the manual.

The problem is, I have a radio my company develops that, when powered on, desensitizes another brand of radio in the vicinity. I'm trying to measure SINAD to determine if the changes we're making to our radio are having an effect on the desensitization in a measureable way.

I have a Tektronix RSA306B Spectrum Analyzer. I am using the Tektronix SignalVu-PC software with the spec. an. I see, via an optional software module, that I'm able to measure SINAD (Module: Audio Analysis). I have the Audio Summary - EM display up, showing me SINAD and I have an appropriate antenna for the spectrum desired hooked up to the device. 

From what I understand, to measure SINAD you adjust the power output of an RF frequency generator until you reach 12dB SINAD. How do I hook up an RF frequency generator to the spec. an.? To the Ref in port? Or perhaps to the type-N Input Connector? I have the antenna hooked up there. Note that "The input signal frequency range is 9 kHz to 6.2 GHz" according to the documentation and that and from what Ive read, SINAD is measured with a 1kHz signal injected.