Martin LIGHTING DIRECTOR, User Manual, Page: 36 / 105

centre stage
mark
upstage mark
calibration pt 1
Figure 20 - Speaker calibration markings being used to
calibrate followspots
downstage mark
calibration pt.2
stage left mark
calibration pt. 4
stage right mark
calibration pt. 3
Or ii) define new lighting calibration points. Mark the vertices of a large square or
rectangle with some gaffer tape on the stage floor. Make sure the four markings
have a clear line of sight to the four MLD speakers. Number the vertices as “light
calibration points 1, 2, 3 and 4”. The numbering does not have to have any
particular order so long as you remember which marking corresponds to which
number. It is preferable that this square or rectangle have roughly 90 degree
angles and that it be as large as possible within the tracking area.
b) Point your lights to your calibration points. In the “lighting set-up” screen,
click on the light that you want to calibrate. Set a “dimmer calibration” value to a high
enough value to let you see the light beam (typically 255, this is the default value). Now,
there are two options to point the light:
Either i) Use the MLD controller. Click on the “Point to Cal. Point 1” option
and position the light beam to be exactly on top of the mark that you numbered
as point 1. To position the beam you may enter pan and tilt values directly or you
may use the pan and tilt controls. A focus control is there to help you sharpen the
beam and make positioning easier. Press OK once the centre of the light beam is
pointed to the first calibration point. Repeat this operation for the remaining
three calibration points by pointing the light beam to the corresponding markings
on the floor.
Side note: depending on how your fixture is rigged, the MLD pan and tilt controllers may
be “counterintuitive”: for example, if you press “+Pan” the beam may seem to be going
in the opposite direction. This harmless behaviour is normal and depends on the relative
orientation of the fixture, under no circumstances does it mean that you should swap pan
and tilt on the fixture.
Page 36 MLD manual 1.1