Table 3-1 Example: Determining Dmx Start Channels On A Link - High End Systems x.Spot User Manual

The notes in Table 3-1 show the various considerations in determining valid Start
Channels for fixtures on a 512 DMX link. A single 512-Channel DMX link can
accommodate up to thirteen 38-channel standard x.Spot fixtures.

Table 3-1 Example: Determining DMX Start Channels on a Link

Fixture
location
Fixture type
on the
link
First x.Spot
Third x.Spot
Second x.Spot
Fourth Studio Spot
Custom x.Spot
Fifth
(Color Mix only)
• •
• •
• •
When setting the Start channel on a fixture, remember:
• A fixture's physical location on the link does not have to coincide with the order
of channel range assignments in the link. See Row 2 in Table 3-1.
• The fixture's channel range must not overlap any other device's channel range on
the link. When two devices on the same DMX link have overlapping channel
ranges, one or both devices will be disabled or behave erratically. The single
exception would be if two or more fixtures need to respond to controller
commands in exactly the same way. In that case, those fixtures must be the same
type (for example two x.Spot fixtures) and must share the entire channel range.
x.Spot™ User Manual
DMX
DMX Channel
channels
Start
used per
channel
fixture
38 channels C001
38 channels C039
38 channels C078
18 channels C121 121-138
22 channels C140 139-160
• •
• •
• •
range
used
The Start channel indicates a block
of channels assigned to a fixture
1-38
with the first number in that
channel range.
Fixture can be assigned the
second block of DMX channels
39-76
without physically being the second
fixture on the link.
To avoid overlapping channels,
place the start channel at the
77-114 beginning of a range of available
channels large enough to
accommodate that fixture type
Every channel in the link does not
need to be assigned.
The channel range required for a
fixture type can change with
custom fixtures
•
•
•
Fixture Operation
Notes
•
•
•
3-7
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