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,
EXAMPLE (See Diagram
3)
In the
example
shown
in Diagram
3 the
followlng
procedure
was followed
to accomplish
the
programming
of:
Prefix:
None
Subscriber:
240
Area
Code:
None
Channel
A Code:
I
Telephone
No.:
123-6666
Channe I B Code:
4
Pief ix:
Si nce none
i s requ i red,
CHARACTER post
"P"
i s
connected
to DIGIT
post
"SKIP"
with
a program-
ming jumper.
Area
Code:
Since
none
is required,
but DIGIT
post
"SKIP"
is a I ready
used,
CHARACTER post
"A". is connected
to DIGIT
EXTENDER post
"P".
Similarly,
"B"
is
connected
to
lrA" and "C"
is connected
to
"6"
in
order
to extend
"SKIP"
to a I I of these
posts.
Telephone
Number:
CHARACTER posts
'ID",
"I?',
"F"
and "G"
are
connected
to DIGIT
posts
"I",
"2";
"3"
and
"6"
respectively.
CHARACTER posts
"Hi',
"J"
and
"K"
are each connected
to the
DIGIT
EXTENDER
post
just
to their
left
in order
to
extend
the
"6"
to a I I of 'these
posts.
Subscriber
Identificati'on:
The "2"
for
CHARACTER post
"W"
is obta i ned from
D IG IT EXTENDER post
"E".
The "4"
and "0"
for
posts
"X"
and "Y"
are
obta ihed
directly
from
those
DIGIT
posts.
Alarm
Codes:
The "I"
for
Channel
A is obtained
from
DIGIT
E.nENDER post
'ID".
The "4"
for
Channe I B is obtained
from
D I G IT EXTENDER post
"X".
Note :
Diagram
2 may be used to chart
the
programming
for
the
actual
installation
to be made.
Connect ions - Channel A
Channe I A. can be triggered
in any one of three
ways:
I. BY a 6-IZV.
DC voltaqe
input
from
a control
instrument
(Diagram
4):
This
method
is used when the
680 is connected
as a "slave"
to
an existing
local
alarm.
The 680
is connected
to the
local
alarm
control's
bell
terminals
as shown
in Diagram
4.
2. By a normally
open "dry"
contact
closure
(Diagram
5a):
In this
mode,
Channel
A will
trigger
when it
senses
the
closure
of
a normally
open
circuit.
Additional
N.O.
contacts
may be connected
in parallel
with
the
one shown,
if
desired.
3. By the
opening
of
a normally
closed
"dry"
contact
(Diagram
5b):
Additional
N.C.
contacts
may be connected
in series
with
the
contact
shown.
Note:
This
method
places
a constant
additional
current
drain
of
.I0 ma fshis
channel
on the
680's
power
supply
and requires
the'addition
of
a 680 ohm,
l/4
watt
resistor
(not
supplied).
221
214
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