Protech Audio 655B - Manual

MODELS COVERED
INTEGRA III SYSTEM
REED RELAY SWITCHER CARD
INSTALLATION & OPERATION MANUAL
The Model 655B Reed 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.
Reed relays are much faster operating than standard
electro-mechanical relays. The average switching time
for the reed relay is 1 millisecond. This fast operating
time makes them ideal devices for line level audio
applications. The relay cards are designed to operate
alone or in conjunction with other switching cards in
the INTEGRA III SYSTEM.
The Model 655B is designed to mount in the Model s
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 reed relay cards may be expected to provide
years of uninterrupted, quality service.
655B
The Model 655B incorporates 8 individual reed relays.
The relays are mounted on a single, plug-in printed
circuit board. Each relay has a Form A normally open
(SPST) 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 ®
1/06
Model 655B 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