High End Systems SHOWGUN user manual Channel Location Fixture Channels Start

CHAPTER 3

SHOWGUN® Menu System

The notes in the following table 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 sixteen 30-channel SHOWGUN fixtures.

Fixture		DMX	DMX	Channel
location	Fixture	channels
			Start	range	Notes
on the	type	used per
			channel	used
link		fixture
First	SHOWGUN	30 channels	C001	1-30	The Start channel is the number of the
					first channel in a consecutive block of
					channels assigned to a fixture.
Third	SHOWGUN	30 channels	C031	31-60	Fixture can be assigned the second
					block of DMX channels without physi-
					cally being the second fixture on the
					link.
Second	SHOWGUN	30 channels	C069	69-98	To avoid overlapping channels, place
					the start channel at the beginning of a
					range of available channels large
					enough to accommodate that fixture
					type
Fourth	Studio Spot	18 channels	C121	121-138	Every channel in the link does not need
					to be assigned.

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 the above table.

•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 SHOWGUN fixtures) and must share the entire channel range.

SHOWGUN® User Manual 19