3
Installation
s e c t i o n 2
I N S T A L L A T I O N
The 2518 DMX Controller comes with the following:
•
IEC power cable
•
5 meter 3-pin XLR-XLR cable
•
Termination plug
•
User manual
C o n n e c t i n g t h e S e r i a l L i n k
A b o u t S e r i a l s L i n k s
The 2518 DMX Controller sends instructions to lighting fixtures and other DMX-controlled
devices through a serial link. A cable connects, or “links,” the output of the controller to the
input of the first lighting fixture. The link is continued to additional fixtures by connecting
the output of the fixture closest to the controller to the input of the next fixture.
Connecting outputs to inputs is complicated a little by the fact that the connection sockets
are not always the same. There are 2 differences to be aware of. First, both 3-pin and 5-pin
XLR sockets are common even though only 3 wires are used for DMX control. Second, the
way the socket pins are wired, known as the pin-out, is different for the Martin standard and
the DMX standard. The pin-outs for each standard are shown in Table 1.
RS-232 I/O
DMX Output
Rear Panel Connections
AC Input
MIDI Input
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
DMX
shield
cold (-)
hot (+)
-
-
Martin
shield
hot (+)
cold (-)
-
-
Table 1: Martin and DMX Pin-Outs
2518 IV.BOOK Page 3 Tuesday, September 22, 1998 7:10 PM
