Martin LIGHTING DIRECTOR Owner's Manual download pdf (Page 8)

Page 8 Getting Started

The receiver

• Extend the receiver’s antennas

• Power the receiver by either connecting it to the 12V DC power supply

in the MLD box or by using a DC power adapter connected to the

mains.

• Use the supplied male–male 1/4 inch phono jack cable to connect the

unbalanced output to one of the MLD external box tracker inputs.

• Read the owner’s manual to optimise the performance of the radio

receiver.

IMPORTANT NOTE: The Samson radio receivers have two types of

outputs: one is a female 1/4 inch phono jack with a line-level signal (5K

Ohms) and the other is a male XLR output with a mic-level signal (600

Ohms). The MLD inputs expect a line-level signal so normally you

would use the 1/4” phono jack output. If you need to use the XLR

output, make sure that the signal is amplified before it reaches the MLD.

Tip: The distance between the tracker and its radio receiver should not

be bigger than about 30 m (100 ft) for VHF and about 70 m (262 ft) for

UHF. In large events where the control booth is farther away than that,

it may be necessary to place the radio receiver closer to the stage and

run a long audio cable between it and the MLD. If so, you might want to

use the receiver’s balanced output (the XLR plug) with a direct box (also

called an audio or impedance matching transformer) rather than the

normal 1/4" phono output.

Ultrasonic speaker installation

Four small ultrasonic speakers form the frame of reference for the

tracking system. It is very important that the speakers are mounted on

static structures so the frame of reference for tracking does not vary

after calibration. Here we will review only ideal speaker placement; for

alternatives and important notes on issues related to speaker placement

please see the MLD’s online help file.

Ideal speaker placement

Mount the four speakers on the corners of the stage by clamping them to

trussing, static props, walls or the ceiling. Set up the speakers so they

are about the same height above the floor, ideally between 5 and 9 m (16

and 30 feet) high. The speakers should form more or less a square or

Martin Lighting Director 2.0 Page 17

Here the MLD and the DMX board are interconnected so that they have

complete bi-directional communication. Apart from both the board and

the MLD controlling directly the fixtures connected to the DMX splitter,

the MLD may also trigger pre-programmed cues in the board. This can

generate very impressive effects because sequences, chases, static looks

and other cues can be called from the MLD interactively, so that effec-

tively the MLD can indirectly control as many DMX channels, fixtures

and protocols as the board itself. This set-up is ideal for interactive

installations, automated show rooms, museums, amusement rides and

other situations where the board or controller will be driven directly by

the performers or participants themselves. The set-up is also ideal for

the most sophisticated performer-assisted lighting effects for shows

under the control of the board operator.

Tip: only boards with a DMX input may be used in this configuration,

but the Martin CASE is particularly well suited because both the MLD

and the CASE have handy drivers for each other that facilitate intercon-

nection and programming.

MLD connected to Martin 3032

Here the MLD is hooked up to the Martin 3032 control system using the

Martin DMX remote interface. The MLD DMX signal is split so that the

3032 reacts to certain commands in predetermined channels while

letting go through signals directed to fixtures that it is not controlling

(lights 1, 2, etc. in the diagram above). As in the previous configuration,

this set-up allows the MLD to trigger presets on the 3032, which might

include complex sequences and cues in Martin protocol. Note that this

triggering occurs in addition to the MLD’s direct fixture control.

MLD box

MLD connected directly to the Martin

3032 controller

MX 512

utin

Martin 3032

Light 1Light 2

to other lights

in series, controll

by the 3032 (but

the MLD may

trigger cues)

MX 512

thru

Light BLight A

o other lights

n series

(controlled

y the MLD only)

artin

rotocol

1 2 3 4 5 6 7 8 9 10 11 12

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Martin LIGHTING DIRECTOR Owner's Manual Page 8

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