Toa M-633D User Manual
Page 18
18
Measurement starts.
Volume adjustment: Specific tone sounds twice.
Distance measurement: Specific tone sounds twice.
Measurement is complete.
Sound field measurement: Specific tone sounds 3 times.
The signals input to the MONO 2 – 6, and STEREO 1 – 3 are muted during
measurement. (Only MONO 1's signal is output.)
The FBS function and Automatic mute function are temporarily turned OFF.
MONO 1 is not assigned to any output.
Check the assignment setting.
When the ARC operation indicator flashes rapidly
soon after measurement starts.*
Input level is too small.
• Speak into the microphone, and check that voice is output from the
speaker.
• Increase the input level by turning the MONO 1's input level control
knob clockwise.
When the ARC operation indicator flashes rapidly*
Large noise is detected.
Adjust the microphone direction. Also, check the presence of large
ambient noise.
When the ARC operation indicator flashes rapidly*
* Perform the following reset operation if these errors occurred.
1. Stop the measurement by pressing the ARC switch.
The ARC indicator stops flashing, then goes off or lights steady.
2. Remedy the cause of the failure, then restart the ARC
measurement in Step 7.
Flashing
ARC operation indicator
Lit green
Output level indicator
Unlit *
1
Flashing orange
for 1 second. *
2
*
1
The indicator may light green depending on the input level
of the microphone.
*
2
The output level indicator of the channel where the ARC
filter has already been set flashes orange even when this
channel was not assigned at the time of ARC measurement.
ARC
ARC
Measurement is complete, and the ARC filter is set.
The output level indicator of the ARC enabled output channel flashes orange for 1 second.
In this case, the ARC operation indicator changes from flashing to steady on (green). The ARC filter data is
automatically saved, and remains effective even after power is cycled.
Note
After measurement completion, move the microphone to your desired location.