Martin Exterior 400, User Manual

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Exterior 400 Image Projector user manual
Control data link
Exterior 400 Image Projector fixtures must be connected via a control data link for DMX controller or
synchronized (master/slave) operation.The following considerations must be taken into account when
planning the data link:
• RS-485 data cable designed for exterior use is required for outdoor installations. RS-485 cable has low
capacitance and a characteristic impedance of 85 to 150 Ohms. It is electrically shielded and has at least
1 twisted pair of conductors. The minimum recommended wire size is 0.25 mm
2
(24 AWG) for runs up to
300 meters (1000 ft.) and 0.32 mm
2
(22 AWG) for runs up 500 meters (1640 ft). CAT 5 network cable
designed for direct burial can be used in outdoor installations, but you are recommended to run it inside
conduit.
• The maximum permitted control data cable length before a control signal amplifier is required is 500
meters (1640 ft.).
• Fixtures must be ‘daisy-chained’, i.e. the data cable must be connected in one single chain of fixtures as
shown in Figure 8 on page 15.
• Each chain may connect a maximum of 32 fixtures. After this the signal must be amplified.
• An optically isolated amplifier-splitter such as the Martin DMX 5.3 Splitter™ (P/N 90758140) or Martin
RDM 5.5 Splitter™ (P/N 90758150) must be used to:
- extend a link beyond 500 meters (1640 ft.)
- extend the link to include a further maximum 32 fixtures, or
- branch the link into further single chains, each containing 32 fixtures. The Martin Splitters mentioned
above allow a link to be branched into five new chains.
• Each chain on the link must be terminated by placing a 120 ohm resistor (available from Martin,
P/N 04150308) across the data hot (+) and cold (-) conductors of the last fixture on the chain.
• Long parallel runs of AC power and control data cables may cause interference on the data link and must
be avoided. Even if not required by law, use separate conduits for power and data cables.
• One DMX universe has 512 DMX control channels available. If individual control of the fixtures in an
installation is required, each fixture must be given its own channels until the limit of 512 is reached. At this
point, a new DMX universe must be created before more fixtures can be added.
• An Exterior 400 Image Projector requires nine DMX channels. The total number of Exterior 400 Image
Projectors that can be linked in one DMX universe will therefore be 512 / 9 = 56 (note that an
amplifier-splitter must be used each time the limit of 32 devices on one branch is reached).
Connection pinouts
XLR connection
XLR connectors are suitable if DMX cable is used for the data link. XLR pin numbers are normally marked
on connectors. Connectors must be wired using the standard DMX/RDM pin-out:
• Pin 1: Cable shield
• Pin 2: DMX/RDM Data 1 - (cold)
• Pin 3: DMX/RDM Data 1 + (hot)
Pins 4 and 5 on 5-pin XLR connectors are not used by DMX or RDM signals but are available for special
Data 2 connections. If used, they must be wired as follows:
• Pin 4: Data 2 - (cold)
• Pin 5: Data 2 + (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 CAT 5 cable is used for the data link. 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 9).
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/RDM data hot (+)
• Pin 2 (Orange): DMX/RDM data cold (-)