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-19-
3-3. SYSTEM CONTROL-MECHANISM BLOCK INTERFACE (MA7 BOARD IC402)
PB.
PICTURE SEARCH}
REC
Signal
Pin No. | VO
PB
PAUSE | SLOW
x2
CUE
[REVIEW]
REC | PAUSE
CAMLOAD
|iC402@ | O
L
L
L
L
L
L
<1
L
L
CAM UNLOAD | C402 @ | O
L
a
H
L
H
L
3
t
t
L
L
L
L
'
L
L
CAM12v
|1C402@ | O
H
L
H
L
MODE 1
Ic402 @
|
H
L
L
="
mt
H
H
H
H
H
H
H
H
i
H
H
MODE 2
1c402 @
|
3
i
L
a
41
L
L
t.
H
H
H
H
H
H
H
H
MODE 3
1c402 @
L
L
Le
4
4
H
H
H
L
H
H
&
}
H
i
H
MODE 4
Ic402 @
'
L
H
H
5
=!
H
L
L
L
i.
L
L
L
L
L
L
REC PRF
Ic402 ®
1
L
2
2
a2
2
2
2
2
*2
"2
2
3
i}
2
2
2
TREELFG
|1C402@
i
HAL
HAL
H/L
H/L
HAL
H/L
3
"3
*3
HL
"3
3
3
3
3
HAL
SREELFG
|1C402@ | |
HL
HAL
HL
3
*3
HAL
3
"3
3
HL
*3
*3
"3
*3
3
HAL
°
TY LED
I1c402 @
(0.0)
"4
"4
4
"4
"4
"4
"4
4
"4
"4
4
4
4
"4
"4
4
O°
CAPTRQ1
| 1C402@
is |
(0.0)
oO
CAP TRQ2
|1C402@
L
4
L
(0.0)|
|
co)
CAPTRQ3
|1C402®
H
H
4
H
H
\(0.D)|
Bae
°
|
CAP STOP
|iC402 @
(0.0)
L
L
L
H
H
&
H
H
H
%
6
H
H
H
H
1
CAP RVS.
Ic402@ | 0
H
L
H
HAL
L
H
L
L
us
L
&.
H
t
1
CAP DA
Ic402@ | O
TSENS
tea2@ | 1 | 4
4
"4
7
or
7
7
7
7
7
7
7
7
7
7
7
S SENS
icaoz@ | 1 | *4
4
"4
7
7
7
7
7
7
7
7
7
7
7
[7
7
——i_—_|__
*1, Uncertainty
*2. "L" when the erasing protection tab is bent,"H" when not bent.
#3. Pulse of period proportionate to reel rotationg speed.
*4. Approx. 2 msec. period "H" pulse.
*5. Pulse in tape running.
*6. "L" only in tape running and when CAP RVS is "H".
ST,
Nomally "L", 2 msec, poriod "H" pulse when tape top or tape end is detected.
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