Yamaha MW12CX Service Manual page 51

2-18 DIGITAL EFFECT (MW12CX)
Set the CH1 as follows and input -60 dBu signal to CH1 MIC.
Set EFFECT RTN fader and EFFECT RTN AUX VR to maximum and check the output level is the value specified in the Table
2-18.
CH1 setting condition
GAIN VR, AUX VR : Minimum
Fader, EFFECT VR : Maximum
ON switch
PFL switch
Table 2-18
OUTPUT EFFECT RTN PFL
ST L
ST R
AUX
MONITOR L
MONITOR R
Short the input terminal using 150 ohms resistor, and set the CH EFFECT level control and CH fader to minimum, then check
the noise level obtained at ST L OUT and ST R OUT is -50 dBu or less.
Also input music source and check the DIGITAL EFFECT is effective by listening to it.
Note:
• Noise should be measured with a 12.7 kHz -6 dB/octave low pass filter.
2-19 USB
2-19-1 Recording
With the controls set as specified in the section 2-2 and table 2-19-1, record the output signal on the personal computer via
USB.
Table 2-19-1
L
R
*1 Turn the CH REC switch ON.
*2 Turn the CH ST switch OFF.
2-19-2 Gain
Playback the recorded file via USB and then check the output level obtained at the MONITOR OUT L/R terminals is within the
range specified in the table 2-19-2.
Table 2-19-2
MONITOR OUT L
L
R
*1 Set the 2TR IN/USB level control at the maximum position.
*2 Turn the TO STEREO/TO MONITOR switch ON (TO MONITOR).
*3 Set the sound control of the personal computer at the maximum position.
: ON
: OFF
ST FADER
AUX SEND VR
MONITOR VR
OFF
Max.
ON
INPUT Input level
INSERT 1 -20.0 dBu
MONITOR OUT R
+16.0 ± 3 dBu
-
+16.0 ± 3 dBu
-
PROGRAM select
PARAMETER
Switch
16
PAN control
L
R
MW12CX/MW12C
OUTPUT level
over -10 dBu
Min. over -7 dBu
over -20 dBu
51