Gain Min; Distortion Ratio; Noise Level - Yamaha O1V 96 Service Manual

01V96
w f characteristic (CH13~16)
Parameter
Input frequency
20Hz
40kHz
e Distortion ratio (CH13~16)
Input frequency Output level
1kHz
r Level difference (CH13~16)
The range for the difference in the gain measured
with q is regulated as follows.
Permitted range
Within 2dB
t Noise level (CH13~16)
Parameter
Permitted range
-72dBu or below
However, if the permitted range above is not met, EIN
Measurement value (Gain at 1 kHz) must be -102
or more.
B. GAIN MIN
q Gain (CH13~16)
Input frequency Input level
1kHz +4dBu
w Distortion ratio (CH13~16)
Input frequency Output level
1kHz
e Noise level (CH13~16)
Parameter
Permitted range
-82dBu or below
r Odd channel/even channel crosstalk
Parameters
Input frequency Output level (odd channels) Permitted range (even channels)
1kHz
The even channels must be the same too.
2-9. CH IN 1~16 level meter operation check
Parameters
80
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The permitted range uses 1 kHz as
the reference.
Input level Permitted range
-26dBu -1.5~0.5dB
-26dBu -1.5~0.5dB
Permitted range
+22dBu 0.02% or below
Short the CH IN being measured with
150 Ω.
Regulated output level Permitted range
+4dBu +4±2dBu
Permitted range
+22dBu 0.01% or below
Short the CH IN being measured with
150 Ω.
Input the signals to the odd channels side.
Short the even channel side with 150 Ω.
+22dBu -58dBu or below
Input the regulated level to the
channels being measured (PHONE).
1~16 CH can be input at the same
time.
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Check visually that the PEAK and
SIGNAL LED lights up and goes out.
Lit up
LED level Input frequency Input level
PEAK 1kHz +23dBu
SIGNAL 1kHz -14dBu
Out
LED level Input frequency Input level
PEAK 1kHz +19dBu
SIGNAL 1kHz -18dBu
3. ANALOG IN/OUT WORD CLOCK INT
48 kHz inspection
3-1. STEREO OUT L/R (XLR)
Parameter Must be input from CH1(XLR).
q Distortion ratio (both L/R)
Input frequency Output level
1kHz +22dBu
w Residual noise (both L/R)
Parameter Switch STEREO OUT Off.
Permitted range
-86dBu or below
3-2. OMNI OUT 1~4
Parameters Must be input from CH1 (XLR).
BUS 1~4 ON with CH1 routing.
Assign Bus nCH to OMNI nCH with
an OUTPUT PATCH.
q Distortion ratio (OMNI OUT 1~4)
Input frequency Output level
1kHz +22dBu
w Residual noise (OMNI OUT 1~4)
Parameter Switch BUS OUT Off.
Permitted range
-86dBu or below
3-3. MONITOR OUT L/R
Parameters Must be input from CH1 (XLR).
Set the MONITOR/2TR lN SW to
MONITOR.
Set the MONITOR OUT LEVEL to
MAX.
q Distortion ratio (both L/R)
Input frequency Output level
1kHz +22dBu
w Residual noise (both L/R)
Parameter Switch STEREO OUT Off.
Permitted range
-86dBu or below
Reference output level
(STEREO OUT)
+23dBu
-14dBu
Reference output level
(STEREO OUT)
+19dBu
-18dBu
Permitted range
0.01% or below
Permitted range
0.01% or below
Permitted range
0.01% or below