Thanks for your reply
I did indeed save the calibration after CAL:FREQ and CAL:AMPTD had finished.
I did have the CAL OUT feeding into the RF Input when I ran the CONFIDENCE test.
I consider SRQ 110 as "Hardware Broken" as that is what I found in the 8590A Portable RF Spectrum Analyzer Installation and Verification Manual, Appendix B, Table B.1
Thanks for the advice on contacting the seller, I had provisionally decided I would keep the unit and ask the seller for a partial refund but your advice has convinced me that is the best way forward
I've attached an image of my Cal Out on the display, I've checked the Frequency and its near enough at 299.893 and it shows the fundamental(@300Mhz) and four more harmonics up to the fifth(@1500Mhz), so i think my Cal Out is good enough for now
the first message i get out of the CONF test is POS-PK Fail, i guess i will start there using the Service manual and work my way through the Errors thrown out in the CONF test...
Ok, so consider this Stoopid question no.1 - what is the huge peak around 8 - 10 Mhz, is it the internal 10Mhz reference?
MostlyHarmless