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Artistic Licence Engineering Ltd. Micro-Scope 3a user guide
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DISPLAY
RECEIVED
START
CODES
The DISPLAY RECEIVED
START CODES menu is
designed to search received
DMX512 for all packets using
alternate Start Codes (i.e. non-zero start codes).
DMX512-A uses a number of ASC’s and it is often useful to identify
these.
The following keys are active:

LEFT Display Previous Alternate Start Code

RIGHT Display Next Alternate Start Code
 UP No Function

DOWN No Function

TOGGLE Jump to receive DMX using this start code
Alternate start codes are displayed in the order in which they were
detected. Some start codes are transmitted very infrequently. For
this reason it is worth leaving this mode active for up to 30
seconds. The list automatically updates as new start codes are
detected.
Micro-Scope will attempt to
display a text description to
identify the start code for
well known codes. The example to the right indicates that start
code 24 (decimal) is one of three start codes detected.
The following table lists the registered start codes. Start codes
that form part of DMX512-A are shown in bold.
START CODE
LIST
Start Code Registered
By Description
Decimal Hexadecimal
000 0x00 ESTA Standard Lighting Data
002 0x02 T-Recursive Packet contains 256 x 16
bit levels in lo-hi order.
003 0x03 R A Gray Proprietary format.
004 0x04 T-Recursive Checksum message.
005 0x05 T-Recursive Answerback query.
006 0x06 T-Recursive LSB of double precision
transmission.
007 0x07 T-Recursive Compressed data.
008 0x08 T-Recursive Compressed 16 bit data.
009 0x09 Rosco ET Proprietary format.
016 0x10 ADB Proprietary format.