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Features and Controls
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25
—REAR PANEL—
1. REMOTE PUNCH IN/OUT Jack
This is for connection of the optional RC-30P foot-
switch. Whether you're a busy engineer, producer, or a
musician with both hands on an instrument, there are
times when you can't drop what you are doing to press
RECORD
button.
The
RC-30P
is the solution.
It lets
you punch-in and out of Record with a tap of your foot.
2. ACCESSORY 1 Connector (37-pin, D-sub)
It has the inputs/outputs
necessary for the direct
interface
with
the TASCAM
ES-50
Synchronizer
or
other SMPTE/EBU
Synchronizers/controllers.
ACCES-
SORY
"1" is a parallel! port, as opposed to the ACCES-
SORY "2" connector.
3. ACCESSORY
2 (SERIAL
I/F) Connector
(15-pin,
D-sub)
This is a serial 1/O port conforming to the RS-232C
standard for linking the TSR-8 to an external computer,
or synchronizer such as the TASCAM
MIDiiZER.
The dip switch adjacent to the connector is used to
select the bit rate (data transmission speed) as per the
diagram beside the switch.
4. REMOTE CONTROL Connector (8-pin, DIN)
This is for connection of the optional
RC- 408 remote
control
unit. With the remote
control
unit, you can
control all tape motion from a distance of up to 15 ft
(5 m).
5. INPUT Jacks 1-8
Each of these RCA jacks accepts a nominal input
level of -10 dBV (0.316 V). The input impedance is 10
kOhms (unbalanced).
6. OUTPUT Jacks 1-8
These
outputs
carry
either the tape signal of the
corresponding track, or the source
(input) signals, de-
pending on the position of various front panel controls.
See the switching logic table on page 27.
The TSR-8 has no output level controls of its own
and the output level is the same as the input level; that
is, -1OdBV
(0.316 V). The output
impedance
is 100
Ohms (unbalanced).
7, CH8 INPUT REF LEVEL Selector Switch
Normally, set this switch to the -10 dBV. (0.316 V)
position to match the input reference level of the re-
maining channels, 1 — 7.
When
you
record track 8 with sync tones or time
codes you can use the switch to set for +4 dBu (1.23 V)
or any level between +4 dBu and -30 dBV (0.03 V) in
pursuant to the sync tone/code generator in use.
Settings of the switch have effect only on track 8.
—FRONT PANEL—
1. Reel Holddown Knobs
;
These are permanently
mounted,
and are used for
the installation of large hub 10.5-inch
reels. Clockwise
rotation of the knobs tightens the reels in place.
2. Reel Tables.
Support 10.5-inch reels/half-inch tapes. Use the same
26
size and type of reels for both the supply and takeup
sides.
3. Guide Roller
Correctly positions the tape along its path.
4. Tension Arms
;
The
capstan
servo
controls
the tape
tension
and
motor
torque
through
the use
of a position
sensor
attached to the right tension arm. The right tension arm
is also associated with a shut-off mechanism that stops
all tape motion if the tape slackens or spills off the reel.
The left tension arm compensates for slight irregularities
in the supply ree! in addition to maintaining even tape
tension.
5. Capstan Shaft and Motor
6. Counter Roller
;
This measures linear tape footage, which is converted
into elapsed time from whatever zero point is entered.
The counter roller is associated with a tach generator to
provide
information
about
tape
motion
to
external
synchronizers during fast wind movements.
7. Pinch Roller
The TSR-8's
pinch roller is a "self-centering" type
for maximum tape motion consistency. A rubber coating
on
it is of urethane
for maximum
resistance
both to
wearing and to cracking or hardening.
8. POWER Switch
Controls AC power to the TSR-8.
Pressing POWER
a second
time turns the machine
off, and clears the
MEMO
1, MEMO
2, Punch-in
Rehearsal
(RHSL),
and
AUTO IN/OUT memories.
9, SPEED MODE Selector Switch
This switch selects either FIX or VAR!
mode.
The
setting
of the switch
is defeated
as soon
as external
specific signals are fed into the TSR-8 via it's rear panel
ACCESSORY
1 or 2 connector in which case the EXT
LED will automatically turn on.
FIX:
Locks tape speed to 15.ips (38 cm/s). Setting
to FIX is indicated by a green LED.
VARI:
Switches
tape speed control
to the
PITCH
CONTROL.
"Non
standard"
tape speeds can then be
used. Setting to VARI is indicated by a red LED.
When
the TSR-8
capstan
motor
is under
external
|
contro} of a synchronizer/controller the EXT
LED will
light steadily in yellow. When either the control signal or
9.6 kHz reference to the TSR-8 is interrupted, the EXT
LED will flash and the FIX LED will turn on solid, in-
dicating that the FIX speed mode is active, as summed
up in the table below.
ACCESSORY
1
ACCESSORY
2
FIX
EXT
(Parallel) -
(Serial)
LED | LED
9.6 Kha
9.6 kre
Off
None of the above four signals is coming
Solid
Roa Flash-
Only one of the four signals is coming
'ing
On
Off
Either pair of the signals (control and
frequency reference) is coming
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