custo flash 500/510 5xx has a preset real time clock. custo diagnostic informs you by a message when the time needs to be readjusted (approx. every six months).
Ensure that the system time of your computer is set properly as it is used for custo flash 500/510.5xx
To adjust the time, open the Examination, Holter, Settings, Device, multiday card page. In the multiday card area click on the set button behind recorder time.
...