SN3 Innovations DS-FX9, User Manual, Page: 14 / 28

14
MAY 2017 DS-FX9 USER GUIDE
Figure 9 – DS- FX9’
S ELECTRICAL INTERFACE
. P
OINT
-
TO
-P
OINT
RS-485
COMMUNICATION
The lower level electrical details don’t need to be an area of f ocus here but an important
concept needs to be addressed. Each DS-FX9 unit has the ability of modifying an incoming
DMX packet prior to transmitting the modified data out to the next unit. This capability is not
possible with a traditional DMX512-A link.
It’s this c oncept that allows for the advanced
functionality of the DS-FX9.
Figure 10 – T
YPICAL
DS-FX9 A
PPLICATION
– (
N
) DS-FX9
DEVICES CONTROLLED BY A STANDARD
DMX
C
ONTROLLER
Note: When utilizing the DS-FX9 an external DMX terminator is not required. The DMX In
port includes a differential AC termination.
DMX512-A Control using Standard Equipment
As stated previously, the DS-FX9 contains an abundance of internal operational modes that
can be controlled via a standard DMX512-A controller. Any standard controller that conforms
to the ESTA DMX512-A specification can control the DS-FX9.
Setting the DS-FX9 Operational Mode (DMX Personality) via DMX
Commanding the DS-FX9 into a specific operational mode is done utilizing the Slot 1 data byte
in a DMX packet. A standard DMX512-A data packet can be represented in block form: