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Infinity Chimp Series
Infinity Chimp Series
sACN E1.31 (Streaming ACN) Output
What is sACN
sACN is another protocol for transmitting DMX512 over Ethernet. It also uses UDP for data transmission, but
utilizes Mulitcast Groups as opposed to Broadcasting Data like ArtNet. The Protocol is described in the
ANSI Standard E1.31. It is typically implemented in so called „nodes“ that convert the data back to DMX
or lighting fixtures. One advantage over ArtNet is that it follows a clear Universe Numbering Scheme and
implements a Priority setting whereas the receiver will take the data from the sender with the highest
priority.
More on sACN Priority
Nodes / receivers must take care about the sACN Priority setting. As a general rule of thumb:
The sACN Universe with the higher priority will be output. If that data stops being transmitted on the
network, the lower priority data for that given Universe will be output.
So, if, for example you have 2 devices sending the same Universe, one with a priority of 50 and one with a
priority of 100, the data from the device with 100 Priority will be output. If this signal is absent for at least 5
seconds, the data from the device with 50 priority will be output.
If you have two different devices ouputting the same sACN Universe with the same priority, these
Universes, according to the sACN specification, should be merged by the receiver (the merge mode is
set in the receiver).
If you have the same device outputting on the same sACN Universe with the same priority, the Data
Stream which was first received by the receiver will be output.
Setup sACN
To enable sACN Output, tick the
Enable sACN
Checkbox in the Setup Screens Input / Output tab.
To further configure each Universe, select the corresponding Cell from the List and press the
[Set]
key. A
new screen allowing to enable or disable the sACN Output, as well as to configure the sACN Universe on
a per DMX Universe basis, will be shown.
Fig. 74: Enable sACN Output
