Introduction and Installation Overview
The DSTR-20 is a lower cost penthouse-style SR.D soundtrack reader with a number
of new features. These include circuitry to enhance bit readability and a video status
light that signals adequate video level. A new, more efficient imaging lens design
allows the use of an internal LED current supply that derives it's power from the +/-
15 Volt rails of the Dolby Digital processor. Thus, there is no need for external
AC power. A user-replaceable LED module rounds out the feature list.
The DSTR-20 will attach directly to the Christie, Cinemeccanica, Century, Ballantyne,
and Simplex projectors using one of the bolt pattern sets provided on the bottom of
the reader case.
Adaptor plates are available for the following projectors
Norelco AA-11/DP70
Dolby Cat. No. 695
Kinoton DP75/FP20, FP30
Dolby Cat. No. 696
A number of standard bolt pattern sets are also provided to accommodate film
magazines, reel arms or film guidance hardware. Cinemeccanica projectors do
require an adaptor plate (Dolby Cat. No. 690) to attach its standard upper reel arm
to the DSTR-20.
Mechanical Installation
NOTE:
While every effort has been made to assure the robustness and reliability
of the DSTR-20, it must be understood that it is primarily a precision opto-mechanical
device built to exacting tolerances and must never be handled without due concern.
Unpack reader and locate its packing kit, flywheel, and video cable. The reader is
shipped with a 30 Ft. (10 meter) cable. Longer video cables are available on request.
Remove the back cover
Attach reader to top of projector using the bolts provided. Since projectors tend to
have custom features, some improvisation may be required to accommodate the
douser, film cleaner brackets, etc.
Attach the reel arm/film guidance hardware to the top of the reader. Verify that
bolts clear the reader's internal components before tightening. Thread film though
film guidance hardware, reader, and upper part of the projector. Adjust the reader
and reel arm so film runs straight and true without rubbing or binding. Tighten
attaching bolts. Install flywheel as shown in Figure 1 by slipping on to shaft and
aligning the set screw with the notch on the drum shaft. The setscrew should tighten
into the notch,
DSTR-20
I
NSTRUCTION
M
ANUAL
USL/B.A.C.P.
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