Martin Professional Inground 200, Installation Manual

Page: 13 / 20

Power and data connection 13
9. If the seal is in good condition, place the connections compartment cover back into position,
being careful not to damage the seal, and tighten the three cover plate Allen screws by hand until
they are finger tight. Then use an Allen key to tighten each screw a further 3/4 turn only. The
cover will now be tight enough to achieve a waterproof seal.
Note: Do not overtighten, or you may damage the seal and invalidate the product warranty.
Do not apply silicone or any other kind of sealant. Doing so will also invalidate the product
warranty.
10. Replace the lamp module, lens and front glass (see “Component removal & reinstallation” on
page 17).
Control data cabling
Inground 200 6 Color and Full Spectrum CMY models require a data link for DMX controller
operation and for synchronized stand-alone operation of multiple fixtures.
Use only RS-485 data cable designed for burial for this purpose. 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 wire size is 0.2 mm
2
(24 AWG) for runs up to 300 meters
(1000 ft.) and 0.322 mm
2
(26 AWG) for runs up 500 meters (1640 ft).
A male 3-pin XLR connector should be fitted at the controller end of the data link to allow a standard
connection to Martin DMX controller and uploader devices. The XLR connector should be wired as
follows:
• Pin 1: shield
• Pin 2: DMX -
• Pin 3: DMX +
Note: to avoid ground/earth loop interference, make sure the DMX cable shield does not come into
contact with the shell or body of the XLR connector.
Planning cable layout
The following considerations must be taken into account when planning the layout of DMX control
cables:
• Fixtures must be ‘daisy-chained’, i.e. DMX must be connected in one single chain of fixtures.
Wire (EU) Wire (US) Function Marking Screw (US)
brown black live “L” yellow or
brass
blue white neutral “N” silver
yellow/green green ground green
Table 2: Mains Connections