Martin LIGHTING DIRECTOR, User Manual, Page: 23 / 105

6. Prepare your tracker(s)
The MLD tracker is a modified wireless microphone that detects the ultrasonic pulses
and sends radio signals back to the MLD system. It consists of the following parts:
power and mute
9v battery compartment
ultrasonic
microphone
Figure 6 - MLD Tracker terminology
filter
mini XLR plug
radio transmitter
111
111
111
111
000
000
000
000
111
111
111
111
111
111
000
000
000
000
000
000
antennae
volume knob
radio receiver, Samson model shown (powered by and
connected to MLD box from one of its audio outputs)
female 1/4" jack output
Fit an MLD microphone assembly, which consists of the ultrasonic microphone, the
filter and the mini-XLR connector, into each radio transmitter. Make sure you place a
fresh 9V battery in the tracker(s). Turn the tracker(s) “on” and set mute to “off”. The
small ultrasonic microphone is in fact the point tracked by the system so make sure it is
not blocked.
7. Test your speakers
In the MLD software, click on the “Set-up” option. On the “Set-up” screen, click on the
“Test Speakers” button. Clicking on the speaker icons that appear on the screen should
produce a constant high-pitch audible tone from the speaker that you are clicking on. If
you do not hear this constant tone, or if it comes from an incorrect speaker, then
check your cable connections to that speaker. When you have verified that all the
speakers are working properly and are correctly placed with respect to the centre
stage mark and each other, click “Done”.
MLD manual 1.1 Page 23