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LMY4-MLF
QQ
3 7 63 1515 0
2-10. Sound Production Inspection (CH1, CH2, CH3, CH4)
Input frequency of 1 kHz.
Set DipSW of UNC so that GAIN=Sweep.
Check that the output level varies.
2-11.CMG Adjustment (CH1, CH2, CH3, CH4)
Condition
Connect a resistor as follows.
R1 24Ω Note 1
R1 24Ω Note 1
q Adjusting VR100, VR200, VR300 and VR400
Set GAIN for 18 dB, apply a signal of +8 dBu/kHz to AMY4-MLF and adjust the pre-set volume (VR100 for CH1, VR200 for CH2,
VR300 for CH3, VR400 for CH4) so that the output level can be as low as possible. Check that the adjusted output level is -50 dBu or less.
Take care of VR*** because it is a multi-rotary type (25 +/-5 rotations) without a stopper.
3.
Setting DipSW for AI8 and AO8 (UNC)
The construction of UNC circuit board is the same for AO8, htough each DipSW has a different meaning.
Though the following shows the setting, DipSW8 of AO8 is not used in any case. (Null)
TE
L 13942296513
AI8 DipSW5 and DipSW8 are not used. (Null)
UNC circuit board
1: ON
1
0: OFF
※AI8 (UNC) DipSW setting [1: ON (=GND) 0: OFF (=+5V)]
1
Operating mode 1: Operation
WC Sel
In order of
mode
(*1)
2, 3 and 4
GAIN
mode
(*1)
6
Phantom
7
GAIN
(*1): If DipSW7 is off, it provides "WCSel = Int 48 kHz fixed and DipSW2, 3, & 4 in GAIN mode."
(*2): A variance of 6 dB occurs every two seconds. (0dB → 78dB → 0dB → 78dB ...)
※AO8 (UNC)DipSW setting [1: ON (=GND) 0: OFF (=+5V)]
www
ON
1
2
3
4
5
6
7
8
.
For further details, about AO8 DipSW, refer to LMY4-DA.
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H
C
LMY4-MLF（each channel）
Note 1）Limit the relative error of two 24 ohm resistors to a maximum 50 m ohm.
G
2
3
4
5
6
7
8
1, 1, 1
0, 1, 1
1, 0, 1
Int48 kHz
Int44.1 kHz
Int39 kHz
1, 1, 1
0, 1, 1
1, 0, 1
Sweep
(*2)
78 dB
66 dB
1: ALL OFF
1: ALL MIN (0 dB)
Clock is provided from INPUT A
x
ao
y
GAIN = +24 dB set
i
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8
Q Q
3
6 7
1 3
CPU
0: Debug
0, 0, 1
1, 1, 0
WC
WC
(OUTPUT A)
(OUTPUT B)
0, 0, 1
1, 1, 0
54 dB
48 dB
0: ALL ON
0: 2, 3, 4 GAIN mode
u163
.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
0, 1, 0
1, 0, 0
WC
(OUTPUT C)
BNC
0, 1, 0
1, 0, 0
36 dB
18 dB
(*1)
m
co
9 9
2 8
9 9
0, 0, 0
no use
0, 0, 0
12 dB
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