Christie LX900 Uživatelský manuál stáhnout pdf (Strana 13)

Command with Address Specification

LX900 RS232 Codes-Expanded Technical Reference Information 8-1

020-000034-01 Rev 1. (03/08)

3 Notes for communication

Expand Serial Command is defined as a single command per line that starts with “C” and ends with carriage

return (0x0D).

When a projector receives carriage return (0x0D), it starts decoding.

There are two types of commands as below:

• Example of Functional Execution Command:”CF_BRIGHT_032” [CR]

• Example of Status Read Command: “CR_BRIGHT” [CR]

Note: “_” indicates a space

It clears the information of buffer in the following cases:

• when the projector receives LF (0x0A) or EOF (0x1A).

• when it takes more than one second to receive a single command

(until receiving the carriage return after the reception of the first data)

The projector processes the command and returns the response within a few ms to 8000 ms after the reception of

the command. When several commands are sent in succession, do not send another command unless the

response to the previous command has been returned. Need to confirm that the processing of the current

command has been completed and returned the response before sending another command.

Note: When the computer sends another command before the previous response has been returned, the

projector may not operate properly.

Note: When the current command processing has not completed, another command process can not be

accepted by the projector

Normally it is less than 1000ms for the completion of receiving a command and returning the response, but it

takes more than 1000ms for some Functional Execution Commands as listed below:

Command Item

CF_IMAGE Select Image Mode

CF_INPUT Select Input

CF_SCREEN Select Screen Size

CF_SYSTEM Select System

CF_INPUT1 Select Input 1 and Signal (concurrent execution)

CF_INPUT2 Select Input 2 and Signal

CF_INPUT3 Select Input 3 and Signal

CF_INPUT4 Select Input 4 and Signal

CF_IMAGEADJ Reset/Store for Image Adjustment

It takes about 8 seconds for internal initialization after plugging in AC power. During this time it cannot process

commands. Do not issue any command.

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Christie LX900 Uživatelský manuál Strana 13