On occasion an instrument may act strangely. Should this occur it is possible to reset the microprocessor. This will generally eliminate the problem. An instrument reset will restore all factory default settings. It will be necessary to perform a calibration after the unit is restored to operation. To perform a factory reset proceed as follows:
Unplug the interface cable .
Remove the AC adapter (if attached).
Open the battery access cover and remove the battery.
Wait 30 seconds then reinstall the battery and power up the instrument.