Topic: Analog input level meter band limit on ADI-2 Pro FS R
Hi, I'd like to clarify which band limit is used for analog input level meter in my new ADI-2 Pro FS R with latest firmware. It should be 40kHz according to docs, but looks like it is a lot higher, which can be confusing. I just noticed that switching to highest sampling rate (768k) in USB mode raises analog input level bars to -45db without input signal. Checking spectrum with Digicheck NG shows that 40kHz noise is -67db and 81kHz noise is -52db. And everything below 40kHz is lower than -70db limit for spectrum analyzer. So level meter definitely goes to 81kHz and higher. For 192k sampling rate input level meter shows -79db which is less confusing but still high for 40kHz limit.
Is this correct behavior or I miss something?