What Is Sent In A Message; Maximizing Message Integrity - Christie Boxer 4K Technical Reference

Options
Query enabled state
Query minimum/maximum

What is sent in a message

Although you send and read messages as strings of ASCII characters, the actual message travels as a
sequence of bytes. Each character in this sequence requires one byte.
The following example illustrates a lamp limit is 2000 hours reply from the projector.
ASCII = ( L
HEX = 0x28 0x4

Maximizing message integrity

For additional reassurance and/or maximum message integrity, insert one or two special characters.
Message Description
requirement
Acknowledgments For assurance from Boxer 4K (or group of projectors) that a set message has been
processed, request an acknowledgment.
The acknowledgment is returned after the message has been received and fully executed
by Boxer 4K (such as in the case of a source switch it is not sent until the switch is
complete). If the message cannot be executed for some reason (such as invalid
parameters, time-out, and so on) a NAK is returned instead (not-acknowledge).
Requesting an acknowledgment serves no purpose when included in a request message,
as the acknowledgment is redundant to the actual reply from Boxer 4K. However, if
requested, the dollar sign ($) acknowledgment from Boxer 4K follows the reply.
There are two types of acknowledgments:
Boxer 4K Serial API Commands Technical Reference
020-101697-05 Rev. 1 (07-2017)
Copyright 2017 Christie Digital Systems USA Inc. All rights reserved.
©
Function
QUERY test pattern enabled state
REPLY test pattern (enabled)
REPLY test pattern (disabled)
QUERY gamma slider minimum/
maximum
REPLY gamma minimum/maximum
P L
0x50 0x28
• Simple Acknowledgments—Insert a dollar sign ($) character just after the start code
bracket. This only returns a $. This only returns a dollar sign ($) on success, or a
caret (^) on failure (NAK).
Communicating with Boxer 4K
Example
(ITP!L001 001 00004 "Flat
Gray")
...
(ITP!L000 001 00024
"Flare")
(ITP!L111 "--END--")
(ITP?E)
(ITP!E000)
(ITP!E001)
(GAM?M)
(GAM!M1000 3000)
! 2 0
0x21 0x32 0x30
0 0 )
0x30 0x30 0x29
10