TYT-TYTERA Channel scan speed of the MD380

Does anyone know the scan speed, for example, the number of channels, either digital or analog, the MD380 can scan per second.  I'm not able to find this information anywhere.

The analog scantime per channel is given by the signalling hold time in the scanlist.
If you set it to the lowest setting of 50mS it scans my 20 channels in one second.

A scanlist of 30 DMR channels are scanned in less than 3 seconds. I guess
that if it detects a datasignal it must wait to decode it to be able to determine
if it is an idle signal or an active conversation and that will add to the scantime.

The detection of an active datasignal doesn't always work. If I have a second DMR
radio, connected to the same antenna cable, tuned to a very strong signal, I notice
that a conversation could start and be going on for 10 seconds until the scanning
MD380 seems to react to it.

Retevis RT3 factory defaults Reset

Simple question I wonder if there is any way to reset the retevis rt3 back to factory defaults