Protech Audio 517B - Manual (Page 2)

INTEGRA III SYSTEM
CONNECTOR & TRIMPOT DRAWING
MODEL 517B 25Hz NOTCH FILTER
CARD HANDLE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
857B & 858B BACKPLANE CONNECTIONS
NOTCH ALIGN.
INSTALLATION
The 517B is designed to be mounted in the Mode 857B or
Model 858B Card Frame Package. The Model 857B Card
Frame Package will accomodate up to 10 cards, using an
external power supply (Model 66708). The Model 858B
Card Frame Package will accomodate 9 cards, and is
supplied with a plug-in power supply card.
The determination as to which backplane assembly to use
in your project, was made prior to our factory receiving the
order. The backplane assembly you have received will
accommodate the group of cards you or your designer
have specified.
The actual steps necessary for installation of the 517B
Notch Filter card, are comparable to those necessary for
and of the 600 series cards. They are as follows:
1 - Mount the card frame in an appropriate EIA 19" width
rack, using 4 screws of sufficient 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 connec-
tions to pins 1, 2 & 3, of card slot No. 10, as shown in the
card frame layout drawing, and the card connection draw-
ing 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 card slot number 1.
INTERNAL POWER SUPPLY. If a plug-in power supply
card is to be used, plug in the supply card, and check for
proper illumination of the two green LEDs on the front of
the power supply card.
3 - Terminate all audio input and output connections, using
the card connection drqwing on the facing page. Double
conductor shielded cable is recommended for all audio
connections.
Page 2
There are no field adjustments necessary to operate the
Model 517B Notch Filter card. The operation of the card is
automatic. The notch alignment trimpot on the card is
adjusted at the factory prior to shipment. This adjustment
determines the amount of attenuation provided by the notch
filter circuit. The card has been shipped with the notch
aligned for maximum attenuation.
The alignment procedures for 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 porperly align a card frame using different
card types.
ALIGNMENT
4- Unpack each individual card, inspect for shipping
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. If no 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
complete, and all the remains is the alignment.
INPUT HI
INPUT LO
GROUND *
OUTPUT LO
OUTPUT HI
PROTECH
®
Mic
Line