Sharp PNE702 Flat Panel Television User Manual


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33
E
Controlling the Monitor with a PC (RS-232C)
n
Repeater control
This system has a function to allow setting of multiple
monitors connected in a daisy chain using a single command.
This function is called repeater control. You can use Repeater
controlfunctionwithoutassigningIDnumbers.
[E
xamp
l
e
]
Set 1
Set 2 Set 3Set 4
*Ifmonitorsareconnectedasshownabove,youcan
execute a command like “Set all monitors’ input settings to
PCD-SUB”.
n
Repeater control command
RepeatercontrolisachievedbysettingtheFOURTH
CHARACTERoftheparameterto“+”.
Example:
VOLM030+ ←
Setsvolumeofallmonitorsto30.
In repeater control, responses are returned by all the
connected monitors.
If you want to determine that a value has been returned by a
specicset,assignIDnumberstoeachmonitorinadvance.
Whensomemonitorsdonotreturntheirresponses,the
probable cause is that the monitors could not receive the
commandorcommandprocessingisnotcomplete.Donot
send a new command.
Example: (When4monitorsareconnected,and
assignedIDnumbers:1through4)
VOLM030+
WAIT
OK
001
OK
002
OK
003
OK
004 ← If 4 monitors are connected in
a chain, reliable operation can
be ensured by sending a new
command only after a reply
hasbeenreturnedby4th(last)
monitor.
Repeater control can also be used for reading settings.
Example:
VOLM???+
WAIT
10
001
Volumesettingsforall
monitors are returned.
20
002
30
003
30
004
TIPS
• IfrepeatercontrolisusedduringIDdesignation(IDSL,
IDLK),theIDdesignationiscanceled.
Setting of the GAMMA user data
n
To transfer the GAMMA user data
Usetheuserdatatransfercommands(UGRW,UGGWand
UGBW).ForeachoftheR,GandBcolors,dividethetotal
512piecesofuserdatainto16blocks,andtransfer32pieces
of data with each command.
C1 C2 C3 C4 P1 P2 P3 P4
…
S1 S2
Command field
Block number (01 to 16)
Data fieldChecksum field
Example:Totransferthedataofblock1(0to31levels)
ofred(R)data
UGRW01000000010002 … 0031C0
Command
Block number
32 pieces of data Checksum
One piece of data consists
of 4 digits.
* Ifdataislessthan4digits,adda“0”(zero)tomakeit4
digits.
* Thechecksumeldisthecharacterstring(ASCII)dataof
lower-orderonebytewhichindicatesthesumoftheblock
numberand32piecesofdatainhexadecimal(0toF).
n
Saving the GAMMA user data
Usetheuserdatasavecommand(UGSV)tosavethe
transferred user data in the monitor.
If the data is not saved, it will be cleared when:
• Themainpowerswitchisoff
• STANDBYMODEisLOWPOWERandthemonitorenters
standby mode
n
Activating the GAMMA user data
Toactivatethetransferreduserdata,selectUSERforGAMMA
ofthePICTUREmenu,orsendthecorrespondingRS-232C
command.
n
Checking the GAMMA user data
Usetheuserdatareadcommands(UGRR,UGGRand
UGBR)toreturn512piecesofuserdataforeachoftheR,
GandBcolors.Dividethedatainto16blocksandreturn32
pieces of data with each command. The value to be returned
is not the value stored in the monitor, but the value in the
temporarymemoryfordisplay.(Thesevaluesarethesame
whentheuserdatasavecommand(UGSV)abovehasbeen
sent.)
TIPS
• TheuserdataisnotinitializedbyRESETofthePICTURE
menu.Toinitializetheuserdata,useALLRESETofthe
FUNCTIONmenu.
TheGAMMAuserdatainitializecommand(UGRS)allows
theinitializationoftheuserdataonly.
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