Protech Audio 571B - Manual

MODELS COVERED
INTEGRA III SYSTEM
RELAY SWITCHING CARD
INSTALLATION & OPERATION MANUAL
The Model 571B Relay Switcher Card is designed
to operate as a remote switching control in
professional audio systems.
Typical applications are public address systems,
broadcast studios, sales presentation rooms, head-
phone listening systems, multi-room audio systems,
and recording systems. The actual application of the
amplifiers is found in buildings such as airports,
factories, courthouses, casinos, convention centers,
libraries, hotels, racetracks, training systems, corpo-
rate boardrooms, etc.
The form C contacts allow switching between two
independent audio sources, or, sending an audio
signal to either of two separate destinations. By
ganging several relay card in series, it is possible to
create a larger audio switching matrix. The relay cards
are designed to operate alone or in conjunction with
other switching cards in the INTEGRA III SYSTEM.
The Model 571B is designed to mount in the Models
857B or 858B Card Frames. The unit may be mixed
or matched with other INTEGRA III SYSTEM cards to
create a complete audio system.
The card frames will allow mounting of either 9 audio
cards and plug-in power supply card (Model 858B), or
10 audio or switching cards when used with an
external power supply (Model 857B). If additional
information is needed, contact Applications Assis-
tance by calling 631-584-5855.
The relay cards may be expected to provide years of
uninterrupted, quality service.
571B
The Model 571B incorporates 2 separate, double
pole-double throw relay circuits, and, a 4 pole-double
throw relay circuit.. The relays are mounted on a
single, plug-in printed circuit board. Each relay has
Form C contact arrangement. The relays are acti-
vated by grounding the control pin. Relay control pins
may be ganged together to operate more than one
relay from a single switch closure. Different combina-
tions of relays may be created by isolating the remote
switch closures through diodes.
PROTECH ®
1/02
Model 571B Shown
www. protechaudio .com
Protech Audio Corporation, PO Box 597, 192 Cedar River Road, Indian Lake, New York, 12842, Voice 518-648-6410 Fax 518-648-6395