LC-37D90U
2 – 4
Appendix
RS-232C port specifications
Appendix
PC Control of the TV
• When a program is set, the TV can be controlled from the PC using the RS-232C terminal. The input signal
(PC/AV) can be selected, the volume can be adjusted and various other adjustments and settings can be made,
enabling automatic programmed playing.
• Attach an RS-232C cable cross-type (commercially available) to the supplied Din/D-Sub RS-232C for the
connections.
NOTE
• This operation system should be used by a person who is accustomed to using computers.
Communication conditions
Set the RS-232C communication settings on the PC to match the TV's communication conditions.
The TV's communication settings are as follows:
Baud rate:
Data length:
Parity bit:
Stop bit:
Flow control:
9,600 bps
8bits
None
1bit
None
Communication procedure
Send the control commands from the PC via the RS-232C connector.
The TV operates according to the received command and sends a response message to the PC.
Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending the
next command.
Command format
Eight ASCII codes CR
Command 4-digits Parameter 4-digits Return code
C1 C2 C3 C4 P1 P2 P3 P4
Parameter
Input the parameter values, aligning left, and fill with blank(s) for the remainder. (Be sure that 4 values are input for
the parameter.)
When the input parameter is not within an adjustable range, "ERR" returns. (Refer to "Response code format".)
Any numerical value can replace the "x" on the table.
0055
100
30
0009
0
????
?
When "?" is input for some commands, the present setting value responds.
Command 4-digits: Command. The text of four characters.
Parameter 4-digits: Parameter 0 – 9, x, blank, ?
+
_
Command table
• Commands not indicated here are not guaranteed to operate.
Response code format
Normal response
Return code (0DH)
Return code (0DH)
Problem response (communication error or incorrect command)
OK
ERR
• If an underbar (_) appears in the parameter column, enter a space.
• If an asterisk (*) appears, enter a value in the range indicated in brackets under CONTROL CONTENTS.
• As long as that from which the parameter ( ) in the table is a numerical value, it may write anything.
CONTROL ITEM COMMAND
PARAMETER
CONTROL CONTENTS
POWER SETTING It shifts to standby.
It input-switches by the toggle. (It is the same as an input change key)
It input-switches to TV. (A channel remains as it is. (Last memory))
It input-switches to INPUT1~INPUT5.
It input-switches to i.LINK.
An input change is also included.
Although it can choose now, it is toggle operation in inside.
Although it can choose now, it is toggle operation in inside.
(Toggle)
Input terminal number (1–5)
AUTO
VIDEO
COMPONENT
DIGITAL
ANALOG
(Toggle)
STANDARD
MOVIE
USER
GAME
DYNAMIC (Fixed)
DYNAMIC
Volume (0–60)
AV mode. ( 10)
PC mode. (0–180)
AV mode. ( 20)
PC mode. (0–100)
Only PC mode. (0–180)
Only PC mode. (0–40)
Only available when DVI ANALOG is being input.
Only available when DVI ANALOG is being input.
(Toggle) [AV]
An input change is included if it is not TV display.
In Air, 2–69ch is effective.
In Cable, 1–135ch is effective.
If it is not TV display, it will input-switch to TV. (same function as CH )
If it is not TV display, it will input-switch to TV. (same function as CH )
Toggle operation of a closed caption.
(Toggle)
Side Bar [AV]
S.Stretch [AV]
Zoom [AV]
Stretch [AV]
Normal [PC]
Zoom [PC]
Stretch [PC]
Dot by Dot [AV] [PC]
On
Off
OFF
OFF TIMER – 30 MIN.
The channel number of TV
The channel number of TV 1
The channel number of TV 1
(Toggle)
(1–135)
AUTO
POWR
ITGD
ITVD
IAVD
INP1
INP5
INPUT SELECTION A TOGGLE
i.LINK
INPUT SELECTION B
AV MODE SELECTION
VOLUME
POSITION
VIEWMODE
Surround
SLEEP TIMER
CHANNEL
Air/Cable SELECT
CC
DIRECT
(ANALOG)
(DIGITAL)
CH UP
CH DOWN
CHANNEL
H-POSITIONH-POSITION
V-POSITION
CLOCK
PHASE
INPUT 1
INPUT 5
AVMD
VOLM
HPOS
VPO
S
CLCK
PHS
E
ACS
U
OFT
M
DCC
H
CHU
P
CHDW
CLCP
WIDE
0
x
x
*
0
5
6
1
2
0
*
*
*
*
*
0
0
*
x
x
x
1
1
2
0
1
2
3
4
5
6
7
8
*
*
1
2
3
4
5
6
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
*
*
*
*
*
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
*
*
*
*
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
DIGITAL Air (Two-Part numbers, 2-digit plus 2-digit)(0101-9999)
(0-999)
(0-999)
(0-9999)
(0-6383)
DIGITAL Cable (Two-Part numbers, 3-digit plus 3-digit)
DIGITAL Cable (Two-Part numbers, 3-digit plus 3-digit)
Front half of DIGITAL CABLE CHANNEL NO. (Designate major channel)
Rear half of DIGITAL CABLE CHANNEL NO. (Designate minor channel)
DIRECT
CHANNEL
DA2
P* * **
DC2
U* **_
DC2
L** *_
DIGITAL Cable (One-Part numbers, 5-digit, less than 10,000)
DC1 0 * * * *
DIGITAL Cable (One-Part numbers, 5-digit, more than 10,000)
DC1
1****
_
_
AIR CABLE AIR(Toggle)ACSL 0 _ _ _
AIR1___
CABLE2___
_
_
(Toggle)
AUDIO SELECTION
ACH
Ax___
_
_
OFF TIMER – 60 MIN.
OFF TIMER – 90 MIN.
2
3
_
_
_
_
_
_
OFF TIMER – 120 MIN.4___
_
_
(Toggle)
On
Off
MUTE
MUT E0
1
2
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
Full Screen [AV]9___
_
_
_
_
_
_
_
_
Effective only when the Standby Mode is set to "Mode1".
Power Off
Power On1___
_
_
_
LINKx___
_
_
_
_
_
_
_
_
_
_
_
_
PC
7
___
TV
INPUT1-5
+
_
X
NOTE
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