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REFERENCE
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TW27A-7
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TW27B-I7
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Page 2-2
Figure 2-3
JH-110B-14 Torque Limit Switches
SLAVE — Selects interface for use with MCl ' s
AutoLock SM TE synchronizer.
HI — Selects high play and record speed (high
speed models 30 ips, low
speed models 15
ips)
From rewind or fast forward modes, manually
controls tape speed and direction if touched
and will continue to control tape motion when
released. Control cancelled when any other
mode is entered.
Fourteen inch models — three switches:
HI — When pressed in, selects higher torque
for use with 14 inch reels.
MED — When pressed in, selects standard tor
que for use with 10-1/2 inch reels.
LO — When pressed in, limits torque for use
with smaller or plastic reels.
MED — Selects medium play and record speed-
(high speed models 15 ips, low speed models
7-1/2 ips)
LO — Selects low play and record speed (high
speed models 7-1/2 ips, low speed models 3-3/4
ips)
EXT — Selects an external capstan speed
reference for slaving this transport to another
device.
FIX — Selects an internal crystal oscillator as a
fixed reference for the capstan speed.
VAR — Selects a variable reference for the
capstan speed.
Figure 2-4
Reference And Speed Controls
FIX EXT
\ / SLAVE
TAPE LIFTER LEVER
Momentarily places tape against heads during
fast forward and rewind modes.
TORQUE LIMIT SWITCH
Ten inch models — single switch. When out,
selects normal torque for 10-1/2 inch reels.
When pressed in, limits reel motor torque for
use with smaller or plastic reels.
SHIELD LEVER
Raises and lowers repro head/shield.
MVC
From stop mode, manually controls tape speed
and direction while hand is in contact with
joystick. When released, returns transport to
STO .
REFERENCE SELECT
Four position switch:
VARIABLE REFERENCE ADJUST
Varies the capstan speed by ± 20% of the
selected speed when VAR is selected by the
reference switch.
RTZ III DISPLAY
Displays tape position in minutes and seconds of
elapsed play/record time. Also used as display for
RTZ function switches listed on following page.
SPEED SELECT
Three position switch:
TORQUE LIMIT
LO
MED
HI
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