Yamaha MW12C, Руководство по обслуживанию

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MW12CX/MW12C
51
L
R
INPUT
INSERT 1
Input level
-20.0 dBu
PAN control
L
R
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
: ON
PFL switch : OFF
Table 2-18
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
OUTPUT
ST L
ST R
AUX
MONITOR L
MONITOR R
EFFECT RTN PFL
OFF
ON
ST FADER
AUX SEND VR
MONITOR VR
Max.
PROGRAM select
Switch
16
PARAMETER
Min.
OUTPUT level
over -10 dBu
over -7 dBu
over -20 dBu
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
L
R
MONITOR OUT L
+16.0
±
3 dBu
-
MONITOR OUT R
-
+16.0
±
3 dBu
*1 Turn the CH REC switch ON.
*2 Turn the CH ST switch OFF.
*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.