Martin LIGHTING DIRECTOR User Manual download pdf (Page 19)

CHAPTER 2 - System Calibration

The Martin Lighting Director uses four ultrasonic emitters as a reference frame to find

wireless trackers on the stage. The following is a step by step guide for setting up the

emitters; experienced users will find that the calibration will take them less than 30

minutes. Please refer to chapter 8 “Tips to optimize performance” for further

suggestions and information on ideal tracking conditions.

1. Mark your stage floor

Mark the centre of your stage with some gaffer tape. This will be the central reference

point for the tracking system, also called the origin. Make four other markings with

gaffer tape, as indicated in Figure 3: the centre of your stage downstage (close to the

public), the centre of your stage upstage (far from the public) and the centre of the

stage's right and left wings, as you stand on the stage facing the public.

Public

Downstage

Upstage

Stage

Left

centre stage

mark

upstage mark

Figure 3 - Stage terminology and system calibration markings

Stage

Right

downstage mark

stage left

mark

stage right

mark

Side note: even if your public surrounds the stage or if you do not have a specific place for the

public, you must choose some points that will define your interactive area and its orientation.

These points will serve as a reference when you are using the MLD software to define regions

of your stage. For convenience, if there is no clear stage orientation, set the downstage of the

stage to be the side that is closest to the MLD computer so that the orientation of the space

“matches” the orientation presented in the MLD software’s “map editor”.

MLD manual 1.1 Page 19

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Martin LIGHTING DIRECTOR User Manual Page 19