开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Sticky Re: What to do when a selftest fails


 

?Received Tiny SA from R&L last week. After calibration only attenuator test 11 failed.
Did manual 30mhz attenuator test as suggested.
Came with v 1.1-52 Dec 14 2020. Not updated

1 db step failed at 4 db at 28.9db
Started with 25.4db fro 0 to 3db.
Noise floor did creep up as value increased.

Was hoping a newer version may fix it but not tried yet. Generated some test signals from an a calibrated Aeroflex service monitor? and mos levels appeared within 1 db or so at different levels, I think I had manual atten at 0 when I did most of those. Only at higher levels -10 to -5db was accuracy on screen varying 5db or more and at very weal levels near -100db and at frequency extremes of high and low inputs.
I can swap with vendor if needed.

? ?Thank You
? ?Tom

Join [email protected] to automatically receive all group messages.