protech INTEGRA III 546B User manual

Protech Audio Corp., 192 Cedar River Road, Indian Lake New York, 12842 oice 518-648-6410 Fax [phone]
PROTECH
MODELS COVERED
The Models 546B (1KHz), and 562B (25Hz) Au-
dio Oscillator cards are designed for use in
professional applications. Typical applications
are multi-zone public address systems, emer-
gency communications systems, training sys-
tems, paging systems, and intercom systems.
The Model 546B is designed to provide a stable, low
distortion 1KHz reference signal for aligning systems,
or to provide audible signals or alarms.
The Model 562B is designed to provide a stable, low-
distortion signal for audio detection or supervision
sytems (See Model 685 Tone Supervisor Card). This
low frequency tone is usually not audible in sound
systems, but may be readily detected by the supervi-
sory card. This type of circuit is quite often found
in systems where crowd control, or emergency
communications are system requirements. The de-
tector circuit monitors the system circuits, and auto-
matically signals the failure of any component in the
system. This facilitates proper maintenance of the
audio system.
Both cards are designed to provide an adjustable -40
to 0dB signal level. The frequency is fixed, via circuit
design.
Both cards feature Bridge-T circuitry, in order to
provide extremely low distortion. The typical distortion
measurement is less than 0.01%. The low distortion
and constant output level are characteristic of this type
of circuit, and makes the oscillator cards ideal for use
as a reference signal when testing audio systems.
There are a number of INTEGRA III SYSTEM cards
available to help mix the audio signals into the audio
system. In the case of the 25HZ signal being used in
conjunction with the Model 685 Tone Supervisor Card,
mixing the signal into the system at the earliest pos-
sible point, will allow the supervisor card to monitor
more equipment.
As with all INTEGRA III SYSTEM cards, both the
Model 546B and 562B Oscillators Cards are designed
to mount in either the Model 857B, or Model 858B
Card Frame Packages. The oscillator cards may be
mixed and matched with other system cards, within
the same card frame, without fear of system degrada-
tion.
For additional information, or applications assistance,
contact:
SALES ENGINEERING
OSCILLATOR CARDS
INSTALLATION & OPERATION MANUAL
®
546B
562B
INTEGRA III SYSTEM
Model 562B Shown
www.protechaudio.com
1/06

INTEGRA III SYSTEM
CONNECTOR DRAWING
MODEL 546B & MODEL 562B
PROTECH AUDIO
CARD HANDLE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
GROUND
OUTPUT LO
OUTPUT HI
GROUND
857B & 858B BACKPLANE CONNECTIONS
INSTALLATION
The Models 546B & 562B Oscillator Cards are
designed to be mounted in either the Model 857 or 858
Card Frame Package. The Model 857B Card Frame
Package will accomodate up to 10 audio cards, and
requires an external power supply. The Model 858B Card
Frame Package will accomodate up to 9 audio cards, and
has a built-in, unpluggable power supply card.
Both card frame assemblies bus the DC power to the
individual card slots, and provide screw-type barrier termi-
nation points for audio and DC connections.
The determination as to which card frame assembly
to use in your project, was made prior to our factory
receiving the order. The card frame assembly you have
received will accommodate the group of cards you or
your designer have specified.
The actual steps necessary for installation of the
Model 562B Oscillator card are comparable to those
necessary for any of the INTEGRA III SYSTEM cards.
They are as follows:
1 - Mount the card frame in an appropriate EIA 19" width
rack, using 4 screws of sufficienttensile strength to provide
secure mounting.
2 - A determination has been made as to which type of
power supply will be used on your system. Follow the
instructions for the type of power supply you will be
installing.
EXTERNAL POWER SUPPLY. If an external power
supply is to be used, terminate the proper supply
connections t o pins 1,2, & 3 of the DC barrier connector,
as shown in the card frame layout drawing, and the card
connection drawing shown on the facing page. Turn
on the power supply, and using a DC voltmeter, check
for correct voltage and polarity at pins 1, 2, & 3 of the barrier
connector.
INTERNAL POWER SUPPLY. I f a plug-in power supply
card is to be used, plug in the supply card, and check
for proper illumination of both the positive and
negative voltage LED's on the power supply card .
3 - Terminate all audio input and output connections,
using the card connection drawing on the facing page.
Double conductor shielded cable is recommended for
all audio connections.
Page 2
4- Unpack each individual card, in pect for hipping
damage, and assuming none is found, slide the card
half-way into the appropriate slot. After all cards have
been installed half-way into the card frame, plug in one
card at a time and turn on the power supply, unplug the
card and recheck terminations. I f n o loading is noticed,
continue inserting each card in the card frame, checking
power supply loading as each card is plugged in. When all
the cards have been plugged in, the installation is com-
plete, and all the remains is the alignment.
There are no adjustments necessary to operate the
Models 546B or 562B Oscillator cards. The operation
of the card is automatic, and distribution of the output
signal is determined via wiring or switching devices.
The output level adjusting trimpot has been factory aligned
to provide 0dB into 600 ohm loads.
The alignment procedures of INTEGRA III SYSTEM
cards differ from card type to card type. Therefore it
is necessary to consult the alignment procedure for each
type of card being installed, to properly align a card
frame using different card types.
ALIGNMENT
OUTPUT
LE EL
®