
ii
Contents
3.3 Measuring Frequency ...................................31
4 Convenient Uses 33
4.1 Power-on Options .........................................33
Auto power-off function ............................................. 35
Disabling the auto-power-off function .......................36
Switching the phase display (phase display
switching function) ....................................................37
Enabling and disabling the beep function ................. 38
Checking the version and serial number ..................39
4.2 Holding the Display .......................................40
Enabling and disabling the hold function ..................40
4.3 Turning On the Backlight ..............................41
Enabling and disabling the backlight ........................41
4.4 Displaying the Predicted State for a
3-phase Circuit ..............................................42
5 Specification 43
5.1 GeneralSpecification .................................43
5.2 InputSpecification andMeasurement
Specification ................................................ 44
Accuracy specification ............................................45
5.3 FunctionalSpecification .............................45
5.4 OtherSpecification .....................................46
6 Maintenance and Service 47
6.1 Repair, Inspection, and Cleaning .................47
6.2 Troubleshooting ............................................48
Error codes ...............................................................51