Click the Batch File Name button to enter settings.

The file name is of the format:

XXXddddd.YYY

XXX=prefix
ddddd=Batch Number Source
YYY=suffix

The value set by Batch Number source should be set and read into the Recorder BEFORE the batch is started.
If  Batch Number Source is set to Auto Incrememt, the batch number ddddd will start at zero and 1 will be added for each new batch.