12
Set-top
head tracking reference unit
Check that the tiny switch on the side of the set-top is in
the up position; if not, move it there. Snap the ball of the
set-top into the socket of its base.
Place the set-top in a location which will be directly in
front of the listener, at 0° azimuth. In many cases this
will mean above or below a video screen. The set-top
base when folded allows placement on a flat surface. The
base when unfolded allows the set-top to hook onto the
top of a flat-panel display, with the “tail” resting behind
the top of the screen.
There must be a clear line of sight between the head-top
and the set-top at all times during operation. Placing the
set-top on top of the display, rather than below it, may be
preferable if, for example, the headphones are worn back
on the head and the front of the listener’s head or hair
blocks the view from the head-top to the bottom of the
screen. Successful operation of the head tracking system
can easily be verified by observing the green LEDs at the
bottom of the set-top. They will light in turn as the
listener’s head moves from side to side.
The set-top head tracking reference.
