Studio Technologies ISS - Manual (Page 5)

Issue 3, June 1990 ISS User Guide
Page 6 Studio Technologies, Inc.
ISS
Mono/Stereo Recognition: The Recognition
Card determines the mono/stereo status
of the incoming left and right audio signals.
The Recognition Card contains circuitry
to determine if the incoming audio is two
channel mono, mono with signal on the left
channel only, or mono with signal on the
right channel only. Each condition can be
defeated by a switch. The circuitry has been
designed to minimize the chance of incor-
rect recognition, i.e., seeing a true stereo
input as mono, or vice versa.
Polarity Correction: ISS circuitry can moni-
tor and correct 180 degree polarity rever-
sals. The Polarity Correction Card ensures
that mono compatibility is maintained.
Design Criteria
We are pleased that you already have, or
will soon be purchasing an ISS. A great
deal of care and effort was put into develop-
ing this product. Our first design require-
ment was that the simulated stereo pro-
duced must sound very good. We, by all
means, love real stereo recordings, but
these, especially for TV broadcasters, are in
limited supply. The ISS provides the stereo
listener with a high quality, enhanced ver-
sion of the mono source.
The second design criteria was to provide
the broadcaster with a set of features that
would allow complete interfacing into their
broadcast facility. We required that the
completed ISS have the operational charac-
teristics to integrate easily with existing
facilities. We hope you share our enthusi-
asm about the ISS. Questions and com-
ments can be directed to Gordon Kapes,
president of Studio Technologies. Your
praise or verbal thrashing is welcome!
Jim Cunningham designed the audio sec-
tions in the ISS. He is responsible for the
very effective stereo simulation method
used. Mitch Budniak designed most of the
logic circuitry and made suggestions that
added considerably to the overall reliability
of the ISS. The printed circuit cards were
designed by Fred Levine. Gordon Kapes
designed the overall architecture and coor-
dinated the project.
Installation
Overview
In this section you will be:
• Taking an ISS inventory
• Mounting and powering the ISS
Mainframe
• Connecting the audio signals
• Connecting the remote control input
signals
• Connecting to the status relay outputs
• Configuring the circuit cards
Getting Ready
Carefully remove the ISS Mainframe from
the shipping carton. For protection, the
circuit cards are shipped installed in the
mainframe. Use your fingers to take out the
four front panel fasteners, allowing the front
panel to be removed. You can now take an
inventory:
Qty Description
1 Mainframe
1 Front Panel
4 Front Panel Fasteners (knurled screws)
1 Power Cord
1 Ribbon Cable Bus