LG 22LG3DCH Owners Manual - Page 26

Pillowspeakersetup - lcd

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PILLOW SPEAKERSETUP (Except 32LG3DC) Connect a pillow speaker to the LCD TV/Monitor. I. How to connect O Cbaocnkneocft thtehe TVP.ILLOW SPEAKER output jack on the O onnect an acccessory pillow speaker or wired remote control unit to this 6-pin jack. O STVel.ect PILLOW SPEAKER on the rear panel of the I_--_ :r_ > _ NOTE: If the pillow speaker switch is set to Pillow Speaker, no sound will be heard from the TV speakers. Also, Auto Volume will be grayed out and not accessible on the Sound menu. Use a pillow speaker that is a UL recognized pendant bearing the warning: "Risk of fire if used in oxygen enriched atmosphere. dant control away from oxygen equipment." control Keep pen- Controlling the TV with Serial Data The TV is capable of being controlled by a single-wire, serial data signal. This is a LG patented technology and is being implemented by certain brands of "smart" pillow speakers. Pillow Speaker Interface This connector furnishes three control lines and an audio output. A patient-pendant remote control, or entertainment audio and nurse call system may be connected here. All lines are isolated from the AC power line and earth ground. (Optoisolators isolate the control lines, and a transformer isolates the audio. There are no relays or inductive components in the control lines.) r'rl x .-I I-I1 z > I'rl ,O c I-I1 z .-I !,/'1 I-I1 -t c 1_ TV ON/OFF 2 OPEN 3_ CHAN UP/DATA UN 4_ COMMON 5_ AUDUO OUT 6_ CHAU DOWN pin No. Purpose 1 External TV On/Off switch. 2 (Not used.) 3 External Channel Up switch or Data in. Common connection for control, data, and 4 audio output. Impedance to earth ground is a 10-meg resistor in parallel with a 1100 pf capacitor. Isolated audio output. Nominal 14-ohm source 5 impedance with short circuit protection. Intended for a pillow speaker with a Iow-impe ance pad-type volume control. 6 External Channel Down switch. Controlling the TV with Mechanical Switches Pin 4(common) is momentarily connected to pin 1,3, or 6 via push-action switches to control On/Off and Channel Up/Down. These pins are at +13volts DC(when measured from pin4) with the switches open. Current draw is 8 mA when a switch is closed. (This operation is identical to previous LG models using the 5-Wire Interface except that only +7 volts DC was supplied and current draw was only 2.5 mA.) 2S

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PILLOWSPEAKERSETUP
Connect a pillow speaker to the LCD TV/Monitor.
I.
How
to connect
(Except
32LG3DC)
O
Connect
the
PILLOW
SPEAKER
output
jack
on the
back of the
TV.
O
onnect
an acccessory
pillow
speaker or wired
remote
control
unit
to this
6-pin
jack.
O
Select
PILLOW
SPEAKER
on the
rear
panel
of the
TV.
_ NOTE:
If the pillow
speaker
switch
is set to Pillow
Speaker,
no
sound
will
be heard
from
the
TV speakers.
Also,
Auto
Volume
will
be grayed
out
and not
accessible
on the Sound
menu.
Use a pillow
speaker
that
is a UL recognized
pendant
control
bearing
the
warning:
"Risk
of fire
if used
in oxygen
enriched
atmosphere.
Keep
pen-
dant
control
away from
oxygen
equipment."
Controlling
the
TV with
Serial
Data
The TV is capable
of being
controlled
by a single-wire,
serial data
signal.
This
is a LG patented
technology
and is being
implemented
by certain
brands
of "smart"
pillow
speakers.
Pillow
Speaker
Interface
This
connector
furnishes
three
control
lines and an audio
output.
A patient-pendant
remote
control,
or entertainment
audio
and
nurse
call system may be connected
here. All lines are isolated
from
the
AC power
line and earth
ground.
(Optoisolators
isolate
the
control
lines, and a transformer
isolates
the
audio.
There
are
no relays or
inductive
components
in the
control
lines.)
I_--_
:r_
>
1_
TV
ON/OFF
2
OPEN
3_
CHAN
UP/DATA
UN
4_
COMMON
5_
AUDUO
OUT
6_
CHAU
DOWN
r'rl
x
.-I
I-I1
z
>
I'rl
,O
c
I-I1
z
.-I
!,/'1
I-I1
-t
c
pin No.
Purpose
1
External
TV On/Off
switch.
2
(Not
used.)
3
External
Channel
Up switch
or
Data
in.
Common
connection
for control,
data,
and
4
audio
output.
Impedance
to earth
ground
is a
10-meg
resistor
in parallel
with
a 1100
pf
capacitor.
Isolated
audio
output.
Nominal
14-ohm
source
5
impedance
with
short
circuit
protection.
Intended
for a pillow
speaker
with
a Iow-impe
ance pad-type
volume
control.
6
External
Channel
Down
switch.
Controlling
the
TV with
Mechanical
Switches
Pin 4(common)
is momentarily
connected
to
pin
1,3,
or
6
via push-action
switches
to
control
On/Off
and Channel
Up/Down.
These pins are
at +13volts
DC(when
measured
from
pin4)
with
the
switches
open.
Current
draw is 8 mA when
a
switch
is closed.
(This
operation
is identical
to
previous
LG models
using the
5-Wire
Interface
except
that
only +7
volts
DC was supplied
and
current
draw was only
2.5
mA.)
2S