Is my V3 broken


i recently received my DSO Nano V3 and it seems cannot get a decent Signal on the output.
I have tries with the Stock Firmware 4.22 and also with the BenF ( with paches )

If i connect the Probe and Signal Connectors, i do not get a decent signal.
On the BenF-Firmware in the Menu FR, the first four entries ( Freq, Duty, Vrms, Pcnt ) read “xx”

Any suggestions?