Yamaha O2R Owner's Manual page 113

Analog input controls
1
2
3
4
5
6
1. Phantom switches (channels 1 to 8)
These switches turn the +48 V DC phantom power ON and OFF
for the XLR-3-31 connectors.
2. A/B switches (channels 1 to 8)
These switches select between the XLR-3-31 connectors and the
phone connectors.
3. 20 dB (pad) switches (channels 1 to 16)
These switches attenuate the input signal by 20 dB.
4. GAIN controls
These controls adjust the gain of the input preamp.
The analog input controls are not controlled or stored by the 02R
automix and scene memory functions. To allow easy recall of the
gain setting, the controls are detented.
5. PEAK LED
This red LED illuminates when the input signal exceeds 3 dB
below clipping.
It is acceptable if this LED illuminates occasionally. However, if it is
continuously illuminated, the input preamp is being overloaded
and clipping distortion will result.
6. SIGNAL LED
This green LED illuminates when the input signal exceeds 10 dB
below nominal.
Controls and Connections
+48V +48V +48V
ON ON ON
OFF OFF OFF
A A A
B B B
20dB 20dB 20dB
+4 -40 +4 -40 +4 -40
GAIN GAIN GAIN
-16 -60 -16 -60 -16 -60
PEAK PEAK PEAK
SIGNAL SIGNAL SIGNAL
1 2 3
3
02R User's Guide