ENGLISH
31
RS-232C Configurations
7-Wire Configurations
(Standard RS-232C cable)
PC
Signage
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 9
3-Wire Configurations
(Not standard)
PC
Signage
RXD
2
3
TXD
TXD
3
2
RXD
GND
5
5
GND
DTR
4
6
DSR
DSR
6
4
DTR
RTS
7
8
RTS
CTS
8
7
CTS
D-Sub 9
D-Sub 9
Communication Parameters
•
Baud rate: 9,600 bps (UART)
•
Data length: 8 bits
•
Parity : None
•
Stop bit: 1 bit
•
Communication code: ASCII code
•
Use a crossed (reverse) cable.
IR OUT Using Guide
Suitable / Not Recommend remote-
controller data format
Item
Formats
Suitable data
format
NEC, RC5, Toshiba
Not recommend
data format
Continuous data format (short burst/gap
signal)
IR Receiver specifications
Carrier frequency
38 KHz
Peak Wavelength
940 nm
Minimum burst
length
16 cycles (420 µs)
Minimum gap time
is required of
21 cycles (550 µs)
Data word length
Max. 100 ms
Minimum gap time
in the data stream
is needed of
30 ms
Parameter Symbol Conditions Min Typ Max Unit
High Level
Out Pulse
Width
T
WH
Burst Wave
= 600 µs
Period =
1.2 ms
400
-
800
µs
Low Level
Out Pulse
Width
T
WL
400
-
800
µs
•
If not use the remote-controller with data formats
recommended, IR output signals will be suppressed
automatically by IR receiver.
•
In this case, LG does not guarantee IR working function.
•
To make sure of this matter, here are two methods as below.
-
Use the remote-controller with suitable data formats.
-
Use the IR dongle receiver of the set-top box.
Summary of Contents for 65UL3E
Page 38: ......
