LMY2-MLAB
14
2-2. Gain/Frequency Characteristics/Distortion Ratio (Both CH1A and CH2A)
*
Inspect CH1B and CH2B only in case GAIN = 0 dB and input level = +23 dBu.
In this case, check that two LED indicators light up correctly.
(*1): It is based on the time of input 1 kHz.
(*2): It is based on the time of input +23 dBu.
Activate power in debug mode.
Activate power in debug mode.
Display the card type every second.
(No need to check)
GAIN lead check every second
(No need to check)
Display the card type every second.
(Int 48 kHz)
78 dB
66 dB
54 dB
48 dB
36 dB
18 dB
12 dB
0 dB
+23 ± 1.0 dBu
−
-30 ± 0.4 dB（*2）
-55 dBu
-43 dBu
-31 dBu
-25 dBu
-13 dBu
+11 dBu
+23 dBu
+10 dBu
-7 dBu
-3.0〜+1.0 dB（*1）
−
−
−
-3.0〜+1.0 dB（*1）
−
−
-2.0〜+1.0 dB（*1）
−
-30 ± 0.4 dB（*2）
-2.0〜+1.0 dBu（*1）
−
-30 ± 0.4 dB（*2）
1 kHz
20 Hz
20 kHz
less than 0.05 %
−
−
−
less than 0.03 %
−
−
less than 0.007 %
less than 0.02 %
less than 0.05 %
Tolerance level (THD)
1 kHz
Tolerance level (output level)
(SLOT 1=LMY2-MLAB)
(SLOT 1=LMY2-MLAB)
(Input A)
Word Clock source type
Word Clock source type
AO8
AI8
2.
INSPECTION
2-1. Option card ID
Conduct an ID check when power is activated after the card is inserted. 7-segment LED in front of AI8 displays the left digit = (slot
number) and right digit = (card type). This will be displayed for 8 slots in sequence, so visually check that it is recognized as LMY2-
MLAB. Also WordClock source currently locked will be finally displayed, so check that it is in the state of Int 48 kHz. Likewise,
check that 7-segment LED in front of AO8 is in the final state of WordClock source = Input A.
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