5-1
5-1. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-338 BOARD IC162)
*1 Synchronized with drum rotation. 25 Hz 50% duty pluse.
*2 Normally “L”. “H” when video signal is not generated.
*3 Composite sync signal (positive).
Signal
RF SWP
QVD
C SYNC
Pin No.
MA-338
IC162 !•
MA-338
IC162 !£
MA-338
IC162 %§
I/O
O
O
I
STOP/
FF/REW
*1
L
*3
TAPE
LOADING
*1
L
*3
TAPE
UNLOADING
*1
L
*3
PB
*1
*2
*3
REC
*1
L
*3
REC/PAUSE
*1
L
*3
5-2. SYSTEM CONTROL — SERVO PERIPHERAL CIRCUIT INTERFACE (MA-338 BOARD IC162)
*1. 25 Hz pulse.
*2. Pulse in period in proportion to tape speed.
*3. 25 Hz “H” pulse.
*4. 330 Hz pulse.
*5. Unstable period pulse.
*6. DC voltage 1 to 5V.
*7. Hi-Z (2.5 V)
Signal
CTL IN (+)
DRM PG
DRM FG
CAP FG
CAP RVS
CAP ERR
DRM ERR
Pin No.
MA-338
IC162 (∞
MA-338
IC162 (º
MA-338
IC162 *ª
MA-338
IC162 *¶
MA-338
IC162 @¢
MA-338
IC162 &§
MA-338
IC162 &¶
I/O
O
I
I
I
O
O
O
STOP
*7
*3
*4
H/L
H/L
L
*6
FF
*7
*3
*4
*2
L
*6
*6
REW
*7
*3
*4
*2
H
*6
*6
TAPE
LOADING
*7
*3
*4
*5
L
*6
*6
TAPE
UNLOADING
*7
*3
*4
*5
H
*6
*6
PB
*7
*3
*4
*2
L
*6
*6
REC
*1
*3
*4
*2
L
*6
*6
SECTION 5
INTERFACE, IC PIN FUNCTION DESCRIPTION
SLV-SE10/SE20/SE25/SE30/SE40/SE45/SX10/SX25/SX40
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
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
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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