Toa M-633D - Page 17

17
Step 7. Conduct ARC measurement.
Notes
• To stop measurement partway, press the ARC switch.
• Never operate the switches and knobs of the unit and the external equipment during the ARC measurement.
[ARC measurement operation]
A 3-stage operation shown on the next page is performed during the ARC measurement.
Different tones sound in each operation stage.
The ARC operation indicator flashes slowly during normal measurement, but it begins to flash rapidly when a
failure occurs.
ARC Switch
ARC operation indicator
Flashes during
the measurement.
Measurement in progress
Measurement stops.
Press
ARC
ARC
ARC
ARC
Unlit
Hold down for
3 seconds.
ARC
Release when the indicator
begins to flash.
Measurement progresses normally
ARC operation indicator status
A failure occurs
Flashing slowly
ARC
Flashing rapidly
ARC
Hold down the ARC switch for 3 seconds.
The ARC operation indicator begins to flash and the measurement starts.