Step 2: Inspecting the CP-220A
a)
Looking directly into the CP-220A from the front, it
should be clear that a number of electronic circuit
boards, or
cards,
can be installed so that they each
plug into a mating
edge connector
on a circuit board
located midway between the front and rear of the
CP-220A's housing.
b) Note that such
edge connectors
are labeled with
designations from J1 through J12. Your CP-220A
should be equipped with several such cards that have
already been plugged into the appropriate connectors.
Among them are at least
two
Line Cards, either
REC-1 or REC-11: one occupying Slot 1 (corresponding
to J1) and one occupying Slot 8 (corresponding to J8).
Slots 2 through 7 (corresponding to J2 through J7) are
available for additional Line Cards as the need arises.
Opening the CP-220A as
described reveals several
important aspects of the
receiver, which will be
detailed in the following text.
FIGURE 1-4
c)
Slot 9 (corresponding to J9, for which there is no edge
connector) must always be left blank.
d)
Slot 10 (corresponding to J10) contains the receiver's
Jumper Card, known as REC-21.
e)
Slot 11 (corresponding to J11) contains the receiver's
Main CPU Card, known as REC-20.
f)
Slot 12 (corresponding to J12) contains the receiver's
I/O (Input/Output) Card, known as REC-3.
CP-220A Central Station Receiver
Section 1: Getting Acquainted Page 1-7
Hook-Up and Installation Manual
Line Cards
In the CP-220A, each
Line Card
is an
electronic circuit –
contained on a printed
circuit board – which
interfaces between an
incoming phone line and
the processing and
display circuitry in the
receiver. When it
receives a phone call, the
Line Card produces a
handshake
tone that is a
signal for the alarm
system’s Digital
Communicator to begin
sending data. CP-220A
Line Cards are capable of
decoding data from a
wide range of alarm
systems because of their
ability to recognize and
adjust to a variety of
communication protocols.
Currently, all CP-220A’s
are furnished with two
REC-11 Line Cards; up to
six additional REC-11s
can be added.