Yamaha spx2000 Service Manual page 30

SPX2000
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[1] Distortion ratio (both L and R)
Input frequency Output level
1 kHz +23 dBu
[2] Residual noise (both L and R)
Condition: The input function should be turned off.
Permissible range
-80 dBu or below
2-3. Checking ANALOG INPUT/OUTPUT Level
Select Switch
Condition:
Signals are inputted through ANALOG INPUT L, R
(PHONE) and output from ANALOG OUTPUT L, R
(PHONE).
The level select switch should be set to -10dBu side (both
input and output) and WORD CLOCK INT should be
set to 48kHz.
[1] Gain (both L and R)
Input frequency Input level Specified output level Permissible range
1 kHz -10 dBu
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2-4. Checking DIGITAL OUT
Condition: Use the System Two.
Signals are inputted through ANALOG INPUT L, R
(XLR) and output from AES/EBU OUT.
a. WORD CLOCK INT 96kHz
Condition: Set WORD CLOCK INT to 96kHz.
[1] Gain (AES/EBU OUT)
Input frequency Input level Specified output level Permissible range
1 kHz +4 dBu
[2] Frequency response (AES/EBU OUT)
Condition:
1kHz is used as reference of the permissible range.
Input frequency Input level
20 Hz +4 dBu
40 kHz +4 dBu
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[3] Distortion ratio (AES/EBU OUT)
Input frequency Output level .
1 kHz -1 dBFS
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Permissible range
0.02 % or below
0 dBu 0±2 dBu
-10 dBFS -10±2 dBFS
Permissible range
-1． 0∼+0． 5 dB
-1． 0∼+0． 5 dB
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Permissible range i
0.01 % or below
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b. WORD CLOCK INT 48kHz
Condition: Set WORD CLOCK INT to 48kHz.
[1] Distortion ratio (AES/EBU OUT)
Input frequency Output level
1 kHz -1 dBFS
2-5. Checking DIGITAL IN
Condition: Use the System Two.
Signals are inputted through AES/EBU IN and output
from ANALOG OUT L, R (XLR).
Select AES/EBU for the word clock.
Setting: Input selection
Press the UTILITY key and when "INPUT SOURCE"
appears on the LCD, press the INC key.
Setting is completed when the asterisk (*) mark moves
to the "DIGITAL" position.
Press the BACK key and execute WORD CLOCK
selection.
a. 96kHz
Condition: Make frequency setting (Sample Rate) of the
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System Two to 96kHz.
[1] Gain (both L and R)
Input frequency Input level Specified output level Permissible range
1 kHz -10 dBFS
[2] Frequency response (both L and R)
Condition:
1kHz is used as reference of the permissible range.
Input frequency Input level
20 Hz -10 dBFS
40 kHz -10 dBFS
[3] Distortion ratio (both L and R)
Input frequency Output level
1 kHz +22 dBu
b. 48kHz
Condition: Make frequency setting (Sample Rate) of the
System Two to 48kHz.
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[1] Distortion ratio (both L and R)
.
Input frequency Output level
1 kHz +23 dBu
9 4 2 8
Permissible range
0.02 % or below
0 5 8 2 9 9 4 2 8
+14 dBu +14±2 dBu
Permissible range
-1． 0∼+0． 5 dB
-1． 0∼+0． 5 dB
Permissible range
0.01 % or below
m
Permissible range
0.02 % or below
9 9
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