TinySA Ultra used to check outputs from the 11707A (except for the two 11661B-related outputs, as I forgot to enable the "Ultra" mode for coverage > 800 MHz.
The 500, 100, 20 and 350-450 MHz signals are stable and within spec except for the 350-450 MHz signal which is about 1 dB below minimum power spec.
The 20-30 MHz signal is unstable - while it has about -7 dBm output level (attached photo from the spectrum analyzer is down 10 dB as I have a 10 dB pad in the input path), the frequency is not stable, and the center frequency wanders (I'm not sure of the total extent of the frequency instability yet.) Spectrum analyzer display is attached.
The interesting thing at this point is that the spectrum display from the 20-30 MHz signal has the same deficiencies as the output from the generator itself. I do not know the expected frequency from the 20-30 MHz signal (the generator is in it's power-up frequency of 1.000 MHz), however, it is about 29.7 MHz, and measurements from the generator's output when I initially suspected a problem were routinely 250-300 kHz below the frequency entered on the keypad.
I've done no further testing (need get the TinySA Ultra into it's GHz-capable mode - this is no secret, just need find the appropriate instruction) so I can check the 2.75-4.05 GHz signals available on the 11707A.
Thanks again for the suggestions/help!
Dave
