Filter
Top Products
– 102 –
4-2. SYSTEM CONTROL-VIDEO BLOCK INTERFACE (MA10 BOARD IC402)
TAPE TAPE PB · PICTURE SEARCH REC ·
Signal Pin No. I/O STOP FF REW
THREADING
UNTHREADING
PB PAUSE SLOW X2 CUE REVIEW REC PAUSE
REC CTL IC402 7 O HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z *1 HI-Z
O HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z
CAP STOP IC402 #¢
(O.D)
L
(O.D) (O.D) (O.D) (O.D) (O.D)
L*3
(O.D) (O.D) (O.D) (O.D) (O.D)
STEP PLS IC402 (ª OLLLLLLL*2LLLLL
PB CTL IC402 ^¶ I H *6 *6 *1 H/L *2 *6 *6 *6 *1 H
DRUM PG IC402 ^• I*4*1*1*5*5*1*1*1*1*1*1*1*1
DRUM FG IC402 ^ª I*4*7*7*5*5*7*7*7*7*7*7*7*7
CAP FG IC402 &º I H/L *6 *6 *5 *5 *6 H/L *2 *6 *6 *6 *6 H/L
CAP DA IC402 &£ O*8*8*8*8*8*9*8*8*9*9*9*9*8
DRUM DA IC402 &¢ O *10 *10 *10 *10 *10 *10 *10 *10 *10 *10 *10 *10 *10
CTL RESET IC402 0 I/O HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z *11 HI-Z HI-Z HI-Z HI-Z HI-Z
RF SW P (SW30) IC402 1 O*1*1*1*1*1*1*1*1*1*1*1*1*1
Q VD IC402 4 O L L L L L *2 *3 *3 *3 *3 *3 L L
V SYNC IC402 ^§ I*4*4*4*5*5*5*5*5*5*5*5*5*5
TAPE TAPE PB · PICTURE SEARCH REC ·
Signal Pin No. I/O STOP FF REW
THREADING
UNTHREADING
PB PAUSE SLOW X2 CUE REVIEW REC PAUSE
*1. 30Hz 50% duty pulse synchronizing with drum rotation.
*2. Normally “L” . “H” when the video signal is not detected.
*3. V period “H” pulse.
*4. “H” in the LP mode. Selected according to the recording mode.
*5. Selected according to the tape recording mode.
4-3. SYSTEM CONTROL-SERVO PERIPHERAL CIRCUIT INTERFACE (MA10 BOARD IC402)
*1. 30Hz 50% pulse.
*2. Pulse in tape running.
*3. Reverse logic pulse of STEP PLS.
*4. “L” when drum rotation stops.
*5. Unstable period pulse.
*6. Pulse of Period proportionate to tape speed.
*7. 360Hz pulse.
*8. Pulse in tape running.
*9. Approx. 2 msec. period “H” or “L” pulse.
*10. Approx. 1.5 msec. period “H” or “L” pulse.