High End Systems SHOWGUN - Manual (Page 23)

CHAPTER 2
Setup and Configuration
SHOWGUN ® User Manual 11
Linking SHOWGUN Fixtures
SHOWGUN ® fixtures operate on standard DMX512 link controlled by a DMX console. The
number of fixtures on a link will be determined by the combined number of channels required by
all the fixtures. A SHOWGUN fixture requires 30 channels on a standard DMX512 link.
Attach the fixture to the link using data-grade cable and 5-pin XLR cable connectors.
Cable Connectors
The SHOWGUN fixture accepts 5-pin XLR cable connectors. Cabling must have a male XLR
connector on one end of the cable and a female XLR connector on the other end.
Pin one is the common (cable shield), pin two is the data complement (negative), pin three is
the data true (positive). Pins four and five are not used, but they allow a secondary data link to
pass through the fixture.
positive
(data true)*
negative
(data
complement)*
Common
(cable shield)
2
1
3
Male XLR Connector Female XLR Connector
positive
(data true)
negative
(data
complement)
XLR shell
Common
(cable shield)
1
2
3
4
5
5
4
positive
(data true)*
negative
(data complement)*
negative
(data
complement)
positive
(data true)
*This data line is not used by the fixture, but allows data to pass through the fixture.
Grounding lug (inside XLR shell)
Test each cable with a voltage/ohm meter (VOM) to verify correct polarity and to make sure
that the negative and positive pins are not grounded or shorted to the shield or to each other.
CAUTION!
Do not connect anything to the ground lug on the XLR connectors. Do
not connect or allow contact between the common (cable shield) and
the fixture’s chassis ground. Grounding the common could cause a
ground loop and/or erratic behavior.