tanks to all relyers for your anwers
Al last I managed to contact the supplyer's assistance, but the technitian confessed that he does not hsve enough know how about this particular model.
His manager promised to take the camera to be tested thoroughly in their lab.
After this I wil know more and tell you what I know.
As to the "pan" remark, as some of you said, and are right, it is used in pan shooting to minimise vertical movement only