Sharp PN-E802 Professional, Operation Manual

32

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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.

[Example] 

Set 1 

Set 2 

Set 3

Set 4

*   If monitors are connected as shown above, you can 

execute a command like “Set all monitors’ input settings to 

PC D-SUB”.

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Repeater control command

Repeater control is achieved by setting the FOURTH 

CHARACTER of the parameter to “+”.

Example:

V

←

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 

specific 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)

V

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 field Checksum 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 field 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).

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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

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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.

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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.