LG 50pk250 Owners Manual

APPENDIX
111
The specifications shown above may be changed without prior notice for quality improvement.
AC 100-240 V ~ 50 / 60 Hz
NTSC-M, ATSC, 64 & 256 QAM
VHF 2-13, UHF 14-69, CATV 1-135, DTV 2-69, CADTV 1-135
75 ohm
32  ~ 104°F (0 ~40 °C)
Less than 80%
-4 ~ 140°F (-20 ~60 °C)
Less than 85% Dimensions
(Width x Height 
x Depth)
Weight
Power requirement
Television System
Program Coverage
External Antenna Impedance
Environment 
conditionWith stand
Without stand
With stand
Without stand
Operating...

APPENDIX
112
APPENDIX
(This feature is not available for all models.)
Configuration of frame 
1st frame
Repeat frame
Lead code
Repeat code
B Bi
it
t 
 d
de
es
sc
cr
ri
ip
pt
ti
io
on
n
F
Fr
ra
am
me
e 
 i
in
nt
te
er
rv
va
al
l:
: 
 T
Tf
f 
 
The waveform is transmitted as long as a key is depressed.
C0 C1 C2 C3 C4 C5 C6 C7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
 Lead code Low custom code High custom code Data code  Data code 
Repeat  code
Tf
4.5 ms 9 ms 
2.25 ms  9...

APPENDIX
113
Code
Function Note(Hexa)Code
Function Note(Hexa)
D6 TV Discrete IR Code 
(TV Input Selection)
C4 POWER ON Discrete IR Code 
(Only Power On)
C5 POWER OFF Discrete IR Code 
(Only Power Off)
5A AV1 Discrete IR Code 
(AV1 Input Selection)
D0 AV2 Discrete IR Code 
(AV2 Input Selection)
BF COMPONENT1 Discrete IR Code 
(Component1 Input Selection)
D4 COMPONENT2 Discrete IR Code 
(Component2 Input Selection)
D5 RGB-PC Discrete IR Code 
(RGB-PC Input Selection)
CE HDMI1 Discrete IR Code 
(HDMI1 Input...

APPENDIX
114
APPENDIX
EXTERNAL CONTROL THROUGH RS-232C
RS-232C Setup
The RS-232C port allows you connect the RS-232C input jack to an external control device (such as a computer
or an A/V control system) to control the TV’s functions externally.
Note: RS-232C on this unit is intended to be used with third party RS-232C control hardware and software.
The instructions below are provided to help with programming software or to test functionality using telenet
software.
RGB(PC)
ANTENNA
 IN
1 2
COMPONENT IN...

APPENDIX
115
RS-232C Configurations
Either cable below can be used.
Set ID
PC TV
RXD  2 3 TXD
TXD 3 2 RXD
GND 5 5 GND
DTR 4 6 DSR
DSR 6 4 DTR
RTS 7 8 CTS
CTS 8 7 RTS
D-Sub 9 D-Sub 9PC TV
RXD  2 3 TXD
TXD 3 2 RXD
GND 5 5 GND
DTR 4 6 DTR
DSR 6 4 DSR
RT S 7 7 RT S
CTS 8 8 CTS
D-Sub 9 D-Sub 9
7-Wire Configuration
(
Serial female-female NULL modem cable)3-Wire Configurations
(
Not standard)
Use this function to specify a TV ID number. 
Refer to ‘Real Data Mapping’.
Select O OP
PT
TI
IO
ON
N
.
Select S Se
et
t...

APPENDIX
116
APPENDIX
Transmission / Receiving  Protocol
T Tr
ra
an
ns
sm
mi
is
ss
si
io
on
n
[Command 1] : First command to control the set.
(j, k, m or x)
[Command 2] : Second command to control the set.
[Set ID] : You  can  adjust  the  set  ID  to  choose  desired  TV  ID
number  in  Setup  menu.  Adjustment  range  is  1
~99.
When selecting Set ID ‘0’, every connected the TV is
controlled. Set ID is indicated as decimal (
1
~ 99)
on
menu and as Hexa decimal (
0x0
~ 0x63)
on transmission
/receiving...

APPENDIX
117
0 01
1.
.P
Po
ow
we
er
r 
 (
(C
Co
om
mm
ma
an
nd
d:
: 
 k
k 
 a
a)
)
To control Power On/Off of the TV.
Transmission [k][a][  ][Set ID][  ][Data][Cr]
Data 00: Power Off Data 01: Power On
Acknowledgement [a][  ][Set ID][  ][OK/NG][Data][x]
* In a like manner, if other functions transmit ‘FF’ data
based on this format, Acknowledgement data feedback
presents status about each function.
* Note: In this model, TV will send the Acknowledge
after power on processing completion.
There might be a...

APPENDIX
118
APPENDIX
1 12
2.
. 
 O
OS
SD
D 
 S
Se
el
le
ec
ct
t 
 (
(C
Co
om
mm
ma
an
nd
d:
: 
 k
k 
 l
l)
)
To select OSD (On Screen Display) on/off.
Transmission[k][l][  ][Set ID][  ][Data][Cr]
Data 00: OSD off Data 01: OSD on
Acknowledgement[l][  ][Set ID][  ][OK/NG][Data][x]
1
13
3.
. 
 R
Re
em
mo
ot
te
e 
 C
Co
on
nt
tr
ro
ol
l 
 L
Lo
oc
ck
k 
 M
Mo
od
de
e 
 (
(C
Co
om
mm
ma
an
nd
d:
: 
 k
k 
 m
m)
)
To  lock  the  remote  control  and  the  front  panel  controls
on the TV.
Transmission[k][m][...

Data 05:
The table above lists the binary code which must be
converted to Hexadecimal before sending. For example:
The binary code to tune the sub source to an NTSC
cable channel is “1000 0001”, which translates to “81”
in Hex.
* 7th bit : For which source do you want to change the
channel.
* 6th bit: Use a two part or one part channel. Most cases
just use 0 since it’s ignored when using NTSC.
* 5th bit: Use 0 with NTSC since it can only use the phys-
ical channel number. Normally use 1 for ATSC since...

The model and serial number of the TV is located 
on the back and one side of the TV. 
Record it below should you ever need service.
MODEL
SERIAL