Martin Extube User Manual page 21

When planning DMX cable layout, remember that the maximum
current-carrying capacity of cables and fixtures limits the length of the line
of fixtures that can be connected via one input cap (see "Installation" on
page 36).
Data connection pinouts
XLR connection
XLR connectors are suitable if the DMX controller has XLR output
sockets. DMX cable is recommended for the data link in this case. XLR
pin numbers are normally marked on connectors. Connectors must be
wired using the standard XLR DMX pin-out:
• Pin 1: Cable shield
• Pin 2: DMX Data 1 - (cold)
• Pin 3: DMX Data 1 + (hot)
To avoid ground/earth loop interference, ensure that the DMX cable shield
does not come into contact with the shell or body of XLR connectors.
RJ-45 connection
RJ-45 connectors are suitable if the DMX controller has RJ-45 output
sockets. CAT 5e network cable is recommended in this case. RJ-45 cable
connector pins are numbered from the left looking at the face of the
connector with the locking clip on top (see Figure 8). Connectors must be
wired according to the 568-B system using the standard RJ-45 pin-out for
DMX applications:
• Pin 1 (White/orange): DMX data hot (+)
• Pin 2 (Orange): DMX data cold (-)
• Pins 7 (White/brown) and 8
(Brown): Common
Pins 3 and 6 are available for Data 2
connections in DMX 512-A or
similar systems. They must be
wired as follows:
• Pin 3 (White/green): Available for
Data 2 hot (+)
• Pin 6 (Green): Available for Data
2 cold (-)
Pins 4 and 5 are not used in currently available lighting control systems
but can be wired as follows:
• Pin 4 (Blue)
• Pin 5 (White/blue)
Control data link
Pin 1 Pin 8
Figure 8: RJ-45 cable
connector pins
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