I am thinking about performing measurements continuously for several tens of hours or more. Are there any problems with this?
This is not a problem as long as the tester is used without exceeding the usage conditions given in the User’s Manual. Note that the accuracy guaranteed by calibration is limited to a single day.
The usage conditions are given in the general specifications in the latest CX1000 User’s Manual. Details on the duration for which calibration is effective are also given in the hardware function specifications of the CX1000, and you should also check these.