Rtz Iii Autolocator Controls - MCi JH-110 Series User Manual

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Turn the SPEED control to HI.
Press the TORQUE LIMIT switch (10 inch model).
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RTZ III Locator Controls
2.2.3
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Enter t pe positions into memories 1 nd 2.
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Page 2-9
Hold a finger g inst the b ck of the tape between
the right roller guide and the t keup reel.
Put the TORQUE LIMIT switch into its UP position
(10 inch model).
Feel the greater amount of tape tension
developed during acceleration of the tape in a
new mode. Also note that the speed change is
quicker.
Turn the VAR potentiometer.
There is no change of speed. Note that this
potentiometer affects speed ONLY when the
REFERENCE switch is in the VAR position.
Repeat the bove procedure for MED nd for HI
speeds.
Speeds will be 15 ips and 30 ips for the standard
machine. Speeds will be 7-1/2 ips and 15 ips for
the slow speed machine. Note that the machine
automatically switches to STO when the
S EED switch is turned.
Press FWD then RWD. Continue to rock b ck nd
forth between the two modes.
Feel the amount of tape tension developed dur ­
ing acceleration of the tape in a new mode.
Turn the REFERENCE switch to FIX.
The speed will be the lowest fixed speed provid ­
ed for your machine. (7-1/2 ips for the standard
machine, 3-3/4 ips for the low speed
option.)
Press the LO TORQUE LIMIT switch (14 inch
model).
Press the HI TORQUE LIMIT switch (14 inch
model).
The 10 inch transport has a single torque limit
switch. In U position (for normal tape and 10
inch reels) the maximum torque is 49.5 inch
ounces. In DOWN position (for plastic reels and
alignment tapes only) the maximum torque is
22.5 inch ounces.
The speed variation will be ±20% of the LO
speed of your machine.
The 14 inch transport has three torque limit
switches. The Hl switch is for use with 14 inch
reels ONLY and has a maximum torque of 72 inch
ounces. The MED switch is for use with normal
tape and 10 inch reels and has a maximum torque
of 49.5 inch ounces. The LO switch is for use with
plastic reels and alignment tapes and has a max ­
imum torque of 22.5 inch ounces.
The EXT position of the REFERENCE switch is
provided for synchronizing this machine with
some other piece of equipment. The SERVO plug
on the back of the transport chassis provides con ­
nections to this circuit. There are two methods of
controlling the speed of the machine through this
channel:
The MCI AutoLock is a separate unit which syn ­
chronizes a slave machine to a master machine
using the SM TE, EBU, or NTSC (drop frame)
digital time code. The slave machine reference
switch is set to the SLAVE position. The master
machine reference switch is turned to FIX. Syn ­
chronization is achieved by comparing syn ­
chronizing detect pulses of the slave to the
master machine and altering the speed of the
slave. The master machine speed is set by fixed
19.2 kHz (and by LO, MED, or HI speed switch) and
controls the slave machine speed which receives
speed information from the AutoLock.
Load a roll of t pe. Press CLR.
Display indicates zero minutes and seconds.
When the transport locates to any desired posi ­
tion, the tape should quickly accelerate to the fast
forward or rewind speed and smoothly decelerate
to a stop or to play speed. Note that negative tape
positions are indicated with a flashing point be ­
tween the minutes and seconds. Negative
positions cannot be stored in memory.
1. A signal of ± 5vdc will vary the frequency of
the internal VCO. When switched to EXT, this
signal voltage can control the speed of the
machine.
2. A 19.2 kHz signal can be applied to the exter ­
nal reference. The frequency of the external signal
then controls the speed of the machine.