Xpand X101 User Manual - page 5
When the system is first installed or verification of system operation is desired, the distribution
module is supplied with a 60 Hertz frame sync generator built into the module. It is activated by
pushing the on/off switch for "Setup Frame Sync" to the "on" position. If the sync generator is
operating and a valid (36 to 80 Hertz) external frame sync signal is received from the projector or
other source, operation of the test generator will cease and the emitter arrays will be synchronized
to the external signal.
The long range emitter array includes a laser pointer to assist in aiming the emitter array at the
screen. The laser pointer is activated by a switch on the distribution module labeled "Laser Pointer",
but can only be activated when the "Setup Frame Sync" generator is operating. This prevents the
laser diode from being turned on while a 3D video is being shown.
For diagnostic purposes, the following indicator lights are provided:
1. A green power LED indicating that the module has power.
2. A green sync LED positioned over the input connector indicating that a valid (36 to 80 Hertz)
sync signal is being received.
3. A flashing yellow LED positioned near the "Setup Frame Sync" label indicating that the test
generator is active.
4. A green and red LED are positioned over each of the four output connectors. The green LED
indicates that an IR array is connected to the output and is receiving power, and a frame sync
input signal is transmitting IR. The red LED indicates that an array is connected and should
be emitting IR radiation, but is not. A red LED indicates a fault condition that requires
attention. The green LED is designed to provide the projection personnel assurance that
everything is hooked up and operating normally or will work normally when an input sync
signal is received. Should the operator wish to completely test the system, he can activate
the sync generator by turning "ON" the "Setup Frame Sync" feature. The green LED with the
absence of the red LED will now indicate that the system is working and emitting IR pulses.
Alternatively, he can put on a pair of glasses and look through the projection window. In the
absence of the IR sync signal, the glasses will be in a clear state (both lenses clear – at least as
clear as they get ‐ 100% of the time). In the presence of an IR sync signal, the lenses will
alternate between the opaque and clear state in synchronization with the IR signal. They will
alternate too quickly to have the flicker perceived, but the effective transmission will drop by
50%. This is detectable by the viewer, but not objectionable so it is a suitable test condition
just before the movie is started even in the presence of an audience, if needed.