LaserLens Installation
1. Measure the DC output of the exciter supply to establish that the voltage is about 9 VDC. If not,
adjust the supply for this voltage.
2. Strike the lamphouse igniter to verify there is no high voltage spikes getting into the exciter lamp
supply. A high transient voltage can damage the Laser.
3. Make sure the exciter supply is not on the same circuit as the lamphouse
4. Ground the exciter supply to Earth.
5. Remove the old exciter lamp to make room for the LaserLens assembly. It is not necessary to
remove the lamp electrical base.
6. Connect the LaserLens to the supply while observing the polarity of the Laser leads. Red to
“Hot”, black to “Ground”.
7. Thread a pink noise film and set the azimuth and focus as you would on a conventional lens.
8. Reduce the slit-loss controls in the stereo processor to minimum. Connect a Real Time Analyzer
to the output of each preamplifier and set the slit-loss for a flat response at 12 kHz. The lens
should produce response out to 16 kHz in most installations, but attempting to force the response
with excessive slit-loss correction can result in high frequency noise. Perform this procedure on
both channels of the preamplifiers.
9. Change the test film to a Dolby Tone loop and reduce the Laser brightness with the control on the
side of the Laser until you can achieve Dolby level on both preamp channels.
I
5945 Peachtree Corners East
Norcross, Georgia 30071
(800) 45-SMART or (770) 449-6728
Set Screw
Brightness
If the exciter lamp supply is old or not functioning properly you may
wish to use the low cost supply offered by SMART. A conventional
“wall pack” calculator type supply is used in conjunction with the
SMART regulator board. The supply should have an output of 12 VDC
at 100 mA.
The regulator board stabilizes the voltage to 9 VDC and provides
further filtering of the small supply. The LaserLens draws only 75 mA of
current and will run cool.
The Laser can be easily separated from the lens by loosening the small
set screw on the side of Laser. This may be necessary in order to
install the assembly in a soundhead. Be especially careful that when
reassembling the two parts, that white lines line up properly.
The power supply board
has a thick foam adhesive
strip on the bottom that
allows the small supply to
be stuck to any surface
near the LaserLens assem-
bly. A convenient place is
inside the exciter lamp
compartment.
