Centring the scanners
If you have gone to the trouble of setting the scanners in the centre of your aperture window
then its important to make sure the scanners are pointing the scanned image dead straight
ahead. This is a simple procedure but will require you to have the scanners fully mounted in
your projector with the lasers in their final positions
•
With power to the projector off, disconnect the x & y signal inputs to the scanner
amplifiers.
•
Loosen the bolts in the scan block that pinch the housing around the scanner - do this for
whichever axis needs adjustment - the scanner should move smoothly & easily but not
be too sloppy in the mount. For DT scanners a 3mm allen key will be needed.
•
Power up the projector - the scanners will find their 'home' centred position.
•
Output some content so the laser(s) light up but use low power and terminate the beam
so you don’t burn a hole in anyone or anything with a ‘hot’ static beam.
•
Gently rotate the scanner - avoiding touching the electrical connections on the pcb - until
the beam is exiting square to the case in the required axis
•
Hold the scanner while tightening up the bolt. Tighten this up without using excessive
force, as long as the scanner is held firmly and can’t rotate then the bolt is tight enough.
•
Remove power off and re-connect the signal inputs
DT-40 Wide scanners
DT-40 Wide have been designed to provide 90 degree scanning for beam shows. They will
perform graphics at low angles but are ideally suited to use where a good coverage is needed in
a small space. If using them for beams it is recommended to set the scan speed low (15-20k) to
achieve the best results.
It is very important with the DT-40 wide scanners to place them as close to the output window
as possible to minimise the size of window needed and avoid the risk of the beam hitting the
case and not exiting properly. You will see that the end of the Y-axis scanner has a special
conical shape and there is a cut-away on the scan block to facilitate wide scan angles.
Service/Spare parts
We can provide spare parts for your DT scanners and always keep broadband-coated mirrors
(Standard and large) in stock. Please note that scanner mirror replacement will require the
scanner to be re-tuned. We will be happy to fit the mirrors for you and re-tune your scanners to
be certain they are fitted correctly. If you have a problem with your DT scanners please email us
or call and we will be happy to help you out.
Scanner Options
Dragon Tiger scanners are available with a number of options.
DT-30 and DT-40 Pro are available with two sizes of broadband mirrors depending on beam
size 5mm mirror for up to 3mm beam and 7mm mirror for up to 5mm beam size. DT-40 Wide
are only available with broadband coated mirrors for 3mm beam sizes.
