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6-1
6-1
IFB-12/12A
IFB-12 (OLD)
IFB-12 (OLD)
SECTION 6
BLOCK DIAGRAM
AUDIO IN/OUT
L
(MONO)
R
AUDIO
SUB
1
1
3
3
4
4
AUDIO L
AUDIO L
AUDIO R
AUDIO R
AUDIO L
AUDIO L
R/PR
R-Y/VIDEO
G/Y
Y/Y
B/PB
B-Y/C
SYNC/HD
VD
VD IN/OUT
HD IN/OUT
B IN/OUT
G IN/OUT
R IN/OUT
1
4
7
9
11
J1
J2
J3
J4
J5
1
3
JP1
RY1
RY2
RY3
RY4
RY5
10V
LD1
(POWER)
CN1
3
2
4
8
7
9
3
2
4
8
7
9
3
2
4
8
7
9
3
2
4
8
9
7
3
4
2
8
7
9
+10V +10V
75
S3
1
3
JP2
3
1
JP5
HD
GS
S4
S5
RY6
RELAY DRIVE
Q9
10V
AUDIO BUFF
Q17
AUDIO BUFF
Q16
9
7
8
2
4
3
AL
AR
VD
HD
B
G
R
75
75
10K
S6
75
75
10K
S7
BUFFER
Q10
BUFFER
Q14
+
+
+
3
2
6
3
2
3
2
6
6
IC21
AMP
IC20
AMP
IC19
AMP
RY7
3
2
4
8
7
9
RY8
3
4
2
8
7
9
RY9
2
3
4
8
9
7
PEAK HOLD
Q15
+
+
+
3
2
6
1
3
5
7
14
3
2
6
6
3
2
IC7
AMP
CR1
IC8
AMP
CR2
IC9
AMP
CR3
R
G
B
IC10
PEAKING SW
IN1
IN2
IN3
IN4
OUT
S1
S2
S3
S4
1
3
5
7
14
IC12
PEAKING SW
IN1
IN2
IN3
IN4
OUT
S1
S2
S3
S4
1
3
5
7
14
IC11
PEAKING SW
IN1
IN2
IN3
IN4
OUT
S1
S2
S3
S4
+
+
+
6
3
2
3
2
6
3
2
6
LEVEL SHIFT,
BUFF,BIAS
D12,Q18,IC16
LEVEL SHIFT,
BUFF,BIAS
D13,Q19,IC17
LEVEL SHIFT,
BUFF,BIAS
D14,Q20,IC17
R OUT
G OUT
B OUT
IC13
AMP
IC14
AMP
IC15
AMP
11
13
13
11
13
9
9
9
8
8
8
4
3
2
1
5
S8 10V
IC2
SYNC SEP
1
1
3
++
+
3
5
2
6
7
1
BUFF,BIAS
Q13
SYNC
SEP
2
5
MODE SW
Q2
MODE SW
Q4
MODE SW
Q5
MODE SW
Q6
MODE SW
Q7
MODE SW
Q8
IC24
+10V REG
OUT
IN
10V
12V
+B SW
Q28
+B SW
Q26
+5V
IC23
+5V REG
+B
OUT
IN
3
+B IK PROT
Q22
PROTECTOR
Q23,24
+B SW
Q25
SW POSITION
1
2
3
4
3C-2V Cable
up to 0.5m
up to 1m
up to 25m
up to 12m
up to 25m
up to 50m
up to 100m
up to 50m
5C-2V Cable
IC25
NOR
4
10
1
3
2
6
5
7
IC26
COMP
IC26
COMP
5
6
7
3
1
2
IC5
BUFFER
D6
6
5
3
2
1
4
7
8
9
10
11
12
S1
(DIP SW)
5V
RELAY DRIVE
Q1
RELAY DRIVE
Q21
HD
VD
3
IC3
COMPARATOR
1
VIDEO
VIDEO
JP3
JP4
1
1
3
3
SYNC
SYNC
1
3
2
7
6
IC1
BUFFER
5
1
6
2
10V
IC4
AUDIO SW
CN3
A21
B21
C21
A12
B12
C12
R/C/R-Y
R/C/R-Y
R/C/R-Y
RGB/VIDEO
HD/CS
HD/CS
HD/CS
G/Y/Y
G/Y/Y
G/Y/Y
VD
VD
VD
A25
B25
C25
A14
B14
C14
B/C/B-Y
B/C/B-Y
B/C/B-Y
A29
B29
C29
7
3
A7
A8
AUDIO L
AUDIO R
B1
B6
B3
B5
B7
B8
B10
AUD.L
AUD.R
RED
GREEN
BLUE
HS
VS
AL
AR
R
G
B
A17
B16
C17
B31
CODE 1
VIDEO/YC
MIX
C19
A2
B23
I/O
SEL
PROTECT
IFB-12(OLD)
(INTERFACE)
PEAK HOLD
Q11
11
CN6
CN7
CN2
–
–
–
–
–
–
–
–
–
–
–
5V
OUT
IN
S2
IN/OUT SELECT
RGB
MIX
S12
OUTPUT SIGNAL
SELECT
TO
SIGNAL INTERFACE
SWITCHER
+
–
+
–
Содержание IFB-12
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