Mitsubishi Electronics HC4900 Projector User Manual


 
2
3) Control sequence
(1) Send the command from the personal computer to the projector.
(2) The projector will send a return command after it receives an end code. If the command is not received
correctly, the projector will not send the return command.
(3) The personal computer checks the command and con rms if the sent command has been executed or not.
(4) This projector sends various codes other than the return code. When having a control sequence by RS-232C,
reject other codes from the personal computer.
During signal switching, the command may not take effect even when the projector sends the return command.
After signal switching completes, wait for the mode indication to disappear before sending the next command.
• When sending commands successively, wait to receive the return command of the current command before
sending a next command.
Keep intervals of at least 400 ms between receipt of a return command and sending of a next command.
Any commands will not be executed for 10 seconds after the power is turned on.
[Example] When turning the power ON. (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector
Description
30 30 21 0D
‘0’ ‘0’ ‘!’ ‘
Command for POWER ON
30 30 21 0D
‘0’ ‘0’ ‘!’ ‘
Command receipt con rmation
(Command echo back)
4) Operation commands (Not executable in stand-by mode. When the commands for input select are sent
while the splash screen is being displayed, the splash screen is only canceled.)
The operation commands are used for the basic operation setting of this projector. They may not be executed
while the signals are changed. The operation commands have no data codes.
Operation ASCII HEX Note
POWER ON ! 21h This command is invalid for 1 minute after the power is turned off.
POWER OFF " 22h This command is invalid for 1 minute after the power is turned on.
INPUT COMPUTER _r1 5Fh 72h 31h This command will not be executed in Stand-by mode.
INPUT COMPONENT _c1 5Fh 63h 31h This command will not be executed in Stand-by mode.
INPUT HDMI _d1 5Fh 64h 31h This command will not be executed in Stand-by mode.
INPUT DVI _d2 5Fh 64h 32h This command will not be executed in Stand-by mode.
INPUT VIDEO _v1 5Fh 76h 31h This command will not be executed in Stand-by mode.
INPUT S-VIDEO _v2 5Fh 76h 32h This command will not be executed in Stand-by mode.
[Example] When setting the input signal to COMPUTER. (Figures and symbols enclosed in quotation marks are
ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector
Description
30 30 5F 72 31 0D
‘0’ ‘0’ ‘_’ ‘r’ ‘1’ ‘
Command for setting the input signal
to COMPUTER
30 30 5F 72 31 0D
‘0’ ‘0’ ‘_’ ‘r’ '1' ‘
Command receipt con rmation
(Command echo back)
5) Remote commands (Not executable in stand-by mode. When the remote commands are sent while the
splash screen is being displayed, the splash screen is only canceled.)
Some remote control operations can be achieved by the remote command codes. The remote commands have no
data codes.
Button’s name on remote ASCII HEX Button’s name on remote ASCII HEX
r53 72h 35h 33h CONTRAST rd0 72h 64h 30h
r2b 72h 32h 62h BRIGHTNESS rd1 72h 64h 31h
r4f 72h 34h 66h COLOR TEMP. rd4 72h 64h 34h
r59 72h 35h 39h GAMMA rd5 72h 64h 35h
MENU r54 72h 35h 34h SHARPNESS rd6 72h 64h 36h
ENTER r10 72h 31h 30h AUTO IRIS r55 72h 35h 35h
AUTO POSITION r09 72h 30h 39h COLOR rd2 72h 64h 32h
ASPECT re2 72h 65h 32h ZOOM/FOCUS r0f 72h 30h 66h
AV MEMORY 1 re4 72h 65h 34h LENS SHIFT r47 72h 34h 37h
AV MEMORY 2 re5 72h 65h 35h NOISE REDUCTION rf7 72h 66h 37h
AV MEMORY 3 re6 72h 65h 36h