PCS10 - voltage offset?

Hi to everybody,
The Demo-Mode of Data logger PCS10/Pc-Lab2000SE displays a vertical offset for each channel.
My voltages always start from the zero base line of the display.
How and where to adjust a vertical voltage offset ?
I couldn’t find any information in specs or manual.
Thanks for any feedback.
Regards
Guenter

There is no offset adjustment.
The DC offset must be present in the signal.

I’m not sure I understand this response. Does it mean that the voltage data reported to a .txt file (or via macros to Excel) already take the offset (if there is one) into account, and there is no further adjustment necessary? If not, how do I adjust for the offset?

Thank you.

Yes, this just means there is no adjustment for the Y-position of the trace.
The Y-position of the trace corresponds the input voltage.