LMY4-MLF
16
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.
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)
AI8 DipSW5 and DipSW8 are not used. (Null)
R1 24Ω Note 1
LMY4-MLF（each channel）
H
C
G
Note 1）Limit the relative error of two 24 ohm resistors to a maximum 50 m ohm.
Clock is provided from INPUT A
GAIN = +24 dB set
R1 24Ω Note 1
0: Debug
0: ALL ON
0: 2, 3, 4 GAIN mode
(*1)
4
3
2
1
8
CPU
1: ON
UNC circuit board
0: OFF
7
6
5
1, 0, 1
Int39 kHz
1, 0, 1
66 dB
0, 1, 1
Int44.1 kHz
0, 1, 1
78 dB
0, 0, 1
(OUTPUT A)
0, 0, 1
54 dB
1, 1, 0
(OUTPUT B)
1, 1, 0
48 dB
0, 1, 0
(OUTPUT C)
0, 1, 0
36 dB
0, 0, 0
no use
0, 0, 0
12 dB
1, 0, 0
BNC
1, 0, 0
18 dB
WC
WC
WC
If DipSW7 is off, it provides "WCSel = Int 48 kHz fixed and DipSW2, 3, & 4 in GAIN mode."
A variance of 6 dB occurs every two seconds. (
0dB → 78dB → 0dB → 78dB ...
)
※AI8 (UNC) DipSW setting [1: ON (=GND) 0: OFF (=+5V)]
4
3
2
1
ON
8
7
6
5
※AO8 (UNC)DipSW setting [1: ON (=GND) 0: OFF (=+5V)]
For further details, about AO8 DipSW, refer to LMY4-DA.
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
