Instruction manual

INSTALLATION
/ Clear-Com
CS-222
2-Channel
Main
Station
'CAUTION
These
servicing
Instructions
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2.4
INTERNAL
OPTIONS
AND
ADJUSTMENTS
ACCESS
TO
INTERNAL
OPTIONS
AND
ADJUSTMENTS:
To
access
the
internal
options
and
adjustments
the
cover
of
the
unit
must
be
removed.
Remove
the
handle
by
removing
the
two
screws
securing
R.
Remove
the
two
screws
on
either
side
of
the
station.
Remove
the
two
screws
on
the
top
of
the
station.
Remove
the
cover.
2COMPONENT
SIDE
CS-222
PCB
MAIN
~~~~~~~~~~~~~~~~~~P/N
170150
Location
of
Jumpers
and
Adjustments
on
PCB
1.
JP-1
and
JP-2
Line
Length
Selection
Jumpers
Jumpers
JP-1
and
JP-2
allow
the
optimization
of
the
hybrid
null
circuitry
for
excessive
intercom
cable
lengths.
JP-1
is
for
channel
A and
JP-2
is
for
channel
B.
The
"S"
position
of
the
jumpers
is
for
'short'
lines
(200
-
500
feet).
The
"L"
position
is
for
lines
in
excess
of
500
feet.
The
CS-222
is
shipped
from
the
factory
with
the
jumpers
in
the
"L"
position.
For
very
short
total
line
lengths
(less
than
200
ft)
remove
the
jumper
completely.
2.
JP-3
Interrupt
Enable/Disable
Jumper
Jumper
JP-3
allows
the
user
to
enable
the
"Stage
Announce"
mute
function
of
active
"Talks".
Position
"Y'
is
for
yes
to
muting
and
"Nu
for
no.
The
CS-222
is shipped
from
the
factory
with
JP-3
in
the
wY
position.
3.
Power
Supply
Voltage
Adjustment
0
Potentiometer
P3
is
provided
for
trim
adjustment
of
the
+30
volt
power
supply.
If
power
supplies
are
intended
to
be
paralleled
on
the
same
line
their
outputs
should
be
as
close
as
possible
to
each
other
for
proper
sharing
of
current.
11/92
Rev.
1.2
Page
14