Revox C 270 TCA Owners Manual

Page 1

AUDIO SYSTEMS COMPONENTS LIMITED

17aKing Street-Mortimer-READING-RG73RS-UK
Tel: (0734) 333100 ~ Fax: (0734) 333400

Now you can add centre track limecode to your new or
existing W recorder. Converting it at surprisingly low
cost to the equivalent of equipment costing twice as
much at least, in tact better than most equivalents
Because this adaptor also provides precise control via a
large confidence timecode display. For all code types
Revox PR99, Otari MX5050 series, Soundcralt Series 20
and MCI are examples weve adapted to date.

Contact ASC lor much more information about how to
achieve much more...lor much less,

~ TRABK ~ TIMEBDIIE - ADMYOR

mm

Centre - Track - Timecode - Adaptor

Page 2

DESCRIPTION
333333;

The A80 cent re track timecode adapt or provrdes all the
necessary components to convert a two track Wt tape
recorder to operate with centre track limecode.

The requirements of the tape recorder are as
follows:

Provision for mounting an extra tape head.

Two track tape lormat

Two track erase head.

The following connections are made to the tape
recorder:

Tape Speed High/Medium/Low.

Replay/Seisync output select.

Master Record enable.

Based on the proven technique of adding a fourth, offset
head the software con trolled system ties - in to the
machines own logic to automat tically recognise speed
and direct tion pick up tachometer pulses and thence to
identify and self configure to any of the internationally
recognised limecode standards.

TiMECODE HEAD

In order to simplifythe modification of the target recorder
the functions of timecode Erase, Record and Replay are
combined in one tape head. The recorded and replayed
limecode are adiusted by software to compensate for the
different time ottsets required by the different modes of
operation. tape speeds and limecode types. This same
software is used to adjust for ditterent types of tape
transport.

SPECIFiCATiON

3%:33
TImeoode lnput

elect ronically balanced.

Shipping weight

>10kimpedance. 72010

+iOdBrn, itOdBm
nominal unbalanced,

Timeoode Output 1kimpedance,
level +8dBm

Switches and indicators

Record Ready Switch

Timecode display HH:MM:SS:FF.

Code Standard LEDs.

Good Code LED.

Power LED.

Ready/Record LED.

Connectors

Power input IEC

hmecode lnput(balanced) XLR Socket

Timecode Output (balanced) XLR Plug

Recorder Status 9 pin 0'
Timecode Replay/

Record/Erase Head 5 pin DiN
Software

The Software modifies the offset in units of one limecode
bit (1/80th of a frame) giving an absolute timing accuracy
of +/250p.S for EBU timecode. This corresponds to
an accuracy of +/-0,004" at 15ips (0.0mm at 381 cm/

sec).
Vohage

120/240VAC, SO/BOHZ

Dimensions
Width
Depth
Helght

2.5kg net, 4kg gross

398mm (15%)
205mm (8)

44mm (1%)
(optional 19">< Iu rack
mountpanel)

Replay/Selsync

The limecode from the timecode head rs
amplified and connected to the limecode reader.
The readeradds orsubtracts the required ottsetto
the current position and this information is used
by the limecode generator to re-generate the
outputtimecode.

Record

The unit Is only allowed to recorda signal on tape
it both the record ready torthe timecode channel
is enabled and mast er record Is enabled.

The timecode from the input Is connected to the
limecode reader The required offset is then
added or subtracted before the timecode position
is transferred to the generator The output of the
generator is connected with the bias signal to the
record head.

VIMr (AJIJL

our a» ( mm
W We

1er poor
rmsr Hap
<

tIMi coor
outeur
<

IIMr DUDE
mow

new
srtsvn:
<

:1
our poor 5F":
crnrmoa

ratsr
sins
cw

c more

Iimrconr DiSPuV
MM 55 rr + same

i

As part of a policy of continual Improvement. ASC reserve the right to alter specifications without notice.

Wfim

AVAILABLE FROM

DESIGN + Phoouc

THE CNAPMAN PARTNER

Page 4

Handling MOS components

- MOS components are extremely sensitive to static charges. therefore please
observe the following guidelines:

Components sensitive to static charges are stored and shipped in protective
packaging. On the package you will find the above symbol.

- Avoid any contact of connector pins with foam packages and foil made of
similar chargeable package material.

- Dont touch the connector pins, unless your wrist is grounded with a conduct
ing wristlet.

Use a grounded conducting mat when working with sensitive components.

. Never plug or unplug PCBs containing sensitive components when the equip
ment is switched on.

COPYRIGHT © AUDIO SYSTEMS COMPONENTS LTD. 1989.

Revision 2 ,5th May 1989, C27OINST

C270 Tmzcov: K11 Page 2

m