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-GENERAL
INFORMATION:
The 680 Digital
Communicator
transmits
coded
messages
over
to a Digital
Receiver
located
at a central
monitoring
stat
lines
are
not
required.
The 680
is
intended
for
use with
d
as those
o=ESCOA,
FRANKLIN or DCI .
the
telephone
system
,ion.
Special
leased
igital
receivers
such
The 680 consists
of a printed
circuit
board
chassis
and cover
that
may be installed
in any suitable
enclosure,
such as the
Nos.
204 or 205 Cabinets,
or the
lower
section
of
a No.
1023,
1024,
BClO26 or BClO28 Alarm
Processing
Center's
cabinet.
( Note :
The upper
section
of a No.
1023,
1024,
BC1026 or BClO28's
cabinet
may be
usedas
well,
if
the
680 is mounted
behind
or
in
lieu
of the
APC's
normal
control
chassis.
1
The 680 may be powered
by a low cost
6V.
dry
battery
(Ademco Nos.
460 or 866)
or
a rechargeable
6V.. DC f i I tered
power
supply
(Ademco Recharge-A-Packs
Nos.
96,
97,
492,
493,
497).
The No. 89 pack may not
be used.
It may be triggered
from
any alarm
control
or other
equipment
that
has a 6,to
l2V.
DC output,
by normally
open dry
contacts
or,
by the
addition
of
a resistor,
norma I I y c 1 osed dry
contacts.
The 680 has 2 sending
channels.
Channel
A has an abort/non-abort
option
and Channel
B is non-abort
only
as explained
later.
The channels
may be used
for
a variety
of
purposes.
The first
channel
may be used to transmit
a fire
alarm
and the
second
+o send a burg.lar
alarm
message.
Alternatively,
the
first
may, be used for
burglary
.Id the
second
for
a panic
or holdup
alarm.
Either
channel
can also
be used to
monitor
other
functions
such
as freezers,
oil
burners,
building
temperature,
machine
0
perations,
etc.
See the
ACCESSORIES section
at the
end of these
instructions
for
a description
of
items
that
are available
to
increase
the
versatility,of
the
680.
OPERATION:
,/
Whenever
a channel
is activated,
transmission
to the
central
monitoring
station
occurs
as follows:
I.
First,
the
680 checks
for
dial
tone
on the
telephone
line.
If
dial
tone
is
detected,
the
680 immediately
and automatically
dials
the
preprogrammed
telephone
number
of the
central
monitoring
station.
Any number
of
digits,
from one to eleven,
may be .progranmed.
The probability
of
immediate
dial
tone
detection
is high,
but
if
a dial
tone
is not
detected
within
several
seconds,
the
680 will
dial
anyway,
on the
assumption
that
the
connection
may be good even though
the
dial
tone
is not
clear.
2. When connection
is made with
the
central
monitoring
receiver,
a "handshake"
tone
(acknowledgment)
is sent
over
the
telephone
lines
by the
Receiver
to
the
680.
This
"handshake"
confirms,
to the
680,
that
connection
has been
camp leted
to the
receiver.
If
"handshake"
is not
received,
the
communicator
will
disconnect
itself
from
the
telephone
line.
After
waiting
long
enough
to disconnect
any outgoing
or
incoming
calls
which
might
interfere
with
dialing
("anti-jam"
which
only
works
i n "ca I led party"
control
exchanges),'the
680 will
reconnect
to
the
telephone
line,
and again
check
for
dial
tone
and dial
fi
described
in Step
I.
Note:
"Anti-
208
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