Yamaha O2R96 Service Manual page 139

2-8. 2TR IN ANALOG 2 L/R
Condition: Check at the [STEREO OUT L] terminal (XLR).
q
Gain (L/R common)
Input Frequency Input Level Specified output level Permissible range
1kHz -10dBV
w
f Characteristic (L/R common)
Condition: Permissible range of 1kHz to be standard.
Input Frequency Input Level
20Hz -10dBV
40kHz -10dBV
e
Distortion factor (L/R common)
Input Frequency Output Level
1kHz +16dBu
r
Residual noise (L/R common)
Condition: [2TR IN ANALOG 2] terminal to be
shorted at 150Ω.
Permissible range
-85dBu or below
t
Level gap between L/R
Level gap measured in q to be decided as follows:
Permissible range
Within 1dB
y
Cross talk between L and R
Condition: Input the signal into the L side.
The R side to be shorted at 150Ω.
Input Frequency Output Level (L) Permissible range (R)
1kHz +16dBu
Confirm that the R side also satisfies the above
conditions.
2-9. CH IN 1~16 (XLR)
Condition: Check at the [STEREO OUT L] terminal (XLR).
A. GAIN MAX, PAD OFF
q
Gain (CH1~16)
Input Frequency Input Level Specified output level Permissible range
1kHz -60dBu
w
f Characteristic (CH1~16)
Condition: Permissible range of 1kHz to be standard.
Input Frequency Input Level
20Hz -60dBu
40kHz -60dBu
e
Distortion factor (CH1~16)
Input Frequency Output Level
1kHz +16dBu
+4dBu +4±2dBu
Permissible range
-1.5~0.5dB
-1.5~0.5dB
Permissible range
0.02% or below
-64dBu or below
+4dBu +4±2dBu
Permissible range
-1.5~0.5dB
-1.5~0.5dB
Permissible range
0.02% or below
r
Noise level (CH1~16)
Condition: Measured CH IN to be shorted at 150Ω.
Permissible range
-64dBu or below
However, if not be within the above range EIN,
confirm that the measured value is (Gain at 1kHz)
<
= -128.
t
Level gap (CH1~16)
Level gap measured in q to be decided as follows:
Permissible range
Within 2dB
B. GAIN MIN, PAD ON
q
Gain (CH1~16)
Input Frequency Input Level Specified output level Permissible range
1kHz +10dBu
w
Distortion factor (CH1~16)
Input Frequency Output Level
1kHz +16dBu
e
Noise level (CH1~16)
Condition: Measured CH IN to be shorted at 150Ω.
Permissible range
-85dBu or below
r
INSERT OUT gain (CH1~16)
Input Frequency Input Level Specified output level Permissible range
1kHz +10dBu
t
INSERT IN 1~16 gain
Condition: Turn ON the [INSERT] switch.
Input the signal into the measured
[INSERT IN] terminal.
Input Frequency Input Level Specified output level Permissible range
1kHz +4dBu
C. Phantom (CH1~16)
Voltage with XLR Pin 2 and Pin 3 shorted, a load
of 10kΩ between Pin 2 and 1, and the Phantom
Switch ON is prescribed as follows:
Permissible range
DC 31~37V
Check if a discharge of electricity occurs quickly
when the Phantom switch is turned OFF.
02R96
+4dBu +4±2dBu
Permissible range
0.01% or below
+4dBu +4±1.5dBu
+4dBu +4±1.5dBu
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