Source
Format
Function
Example
(Code+Subcode
Data)
REPLY (input port configuration is 1
"One-Port")
(SIN+PORT!001 "One-
Port")
Generally, most commands include 0 or 1 data fields or parameters. Where applicable, a message may
expand to include additional parameters of related details.
The smallest step size for any parameter is always 1. For some controls (such as Size) the value
displayed on the screen has a decimal point (for example, 0.200 to 4.000). In this case, the values
used for the serial communications is an integer value (for example, 200 to 4000), not the decimal
value seen on the screen.
Available message types
Message type
Description
Set
A command to set a projector parameter at a specific level, such as changing the
brightness.
Request
A request for information, such as what is the current brightness setting.
Reply
Returns the data in response to a request or as confirmation of a command.
Basic message structure
Understand the component fields that comprise a standard ASCII message.
Components
Description
Start and end of message
Every message begins with the left parenthesis character and ends with the right
parenthesis character.
If the start character is received before an end character of the previous message,
the partial (previous) message is discarded.
Prefix characters (optional) To acknowledge that Christie has responded, and/or maximize message
integrity, insert one or two special characters before the three-character function
code:
• $ (Simple Acknowledgment)—Causes a dollar sign ($) character to be sent from
Christie when it has finished processing the message.
• # (Full Acknowledgment)—Causes an echo of the message as a reply to be sent
from Christie when it has finished processing the message.
• & (Checksum)—Allows a checksum to be put as the last parameter in the
message for verification at Christie .
Function code
The Christie function you want to work with, such as channel selection or
gamma, is represented by a three-character ASCII code (A-Z, upper or lower case).
This function code appears immediately after the leading parenthesis that starts the
message. In messages sent to Christie that do not have a subcode, a space
between the function code and the first parameter (or special character) is optional.
+Subcode
The Christie function you want to work with may have one or more
subcodes that allow you to select a specific source, image, channel or subfunction.
Communicating with Christie
Christie Technical Reference–Serial Commands
9
020-103316-07 Rev. 1 (09-2022)
Copyright
©
2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
