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Q: Projection is blurred or foggy; static beams (points)
have a halo around them, but the output window is clean.
How to fix this?
A: This is usually an optical problem such as scratches,
dust and dirt on the components on the beams’ path
from their source to the output aperture (scanner mirror,
dichroic filter, bounce mirror). To inspect and clean the
optical components, the projector must be turned off and
disconnected from the mains power supply.
Use a clean cotton bud (swab) soaked with isopropyl
alcohol to clean the optical component’s surface. The
bud must be “rotated” against movement direction during
cleaning to avoid the surface get scratched by dust and
dirt already taken from the surface. After one whole spin
(360 deg), dispose of the cotton bud and take a new
cotton bud to continue the cleaning process. Remember
that the optical parts’ surface can be easily scratched and
permanently damaged by an incorrect cleaning process.
Q: One of the colours fades out and then goes back to its
full power. This repeats. Why is this happening?
A: The laser projector has automatic over-temperature
protection, decreasing the individual laser module’s power
output to 50% if its temperature goes above the
preset level. After stabilization of temperature, the
output power goes back to 100%. If the temperature
at 50% power output still rises, the power output is cut
to zero until the temperature returns to safe values.
If the projector reduces the power output of one or more
colours, the reason for it could be insufficient cooling
caused by lack of airflow, too warm cooling air, or faulty
fans on the main heatsink.
Q: The projection suddenly lost a significant amount
of blue colour. The colour tone of all RGB effects changed,
and the total power output decreased too. Why?
A: The most likely reason is the activated Colour
Balance function, which balances all the primary
colours in the correct ration for all the mixed colours
to be precisely right. For example, projected white
is nice and crisp, without discolouration towards blue.
To enable or disable this function, press the little button next
to the FB4 display on the rear panel. This feature is switched
ON when the yellow LED indicator next to this button is on.
When the Colour Balance function is disabled, all the
colours go back to 100% power output.
Q: How many projectors can I daisy-chain with E-STOP
Remote?
A: The number of projectors running on a single E-STOP
Remote is unlimited. Each projector amplifies the E-STOP
signal for the next projector in line.
Q: What is the maximum distance of the E-STOP
connection between two projectors?
A: The maximum length between two projectors is defined
by the internal resistance of used cable connection wires.
The total resistance of one wire within connection must
be below 400 Ohm. Standard microphone XLR cables
have resistance typically below 0,1 Ohm/meter. So the
maximum distance between two projectors with such
cable is approximately 4km.
Q: How many projectors can I daisy-chain with a single
Ethernet line (PC OUT–> IN1, OUT1-> IN2, OUT2-> IN3…)?
A: We recommended daisy-chaining a maximum
of 6 units on a single Ethernet line. If you connect more
than six projectors, the data packet losses will most
likely be noticeable, resulting in a disruptive movement
of projected graphics and animations.
For the best possible quality of multi-laser data
connection, it is recommended to use a high-speed
1Gbit data connection between PC and data switch. Also,
it is recommended to separate 100Mbit data connections
between the data switch and each projector.
Q: Is it possible to connect a door switch as a safety
measure to interrupt the laser emission?
A: Yes. Laser projectors supplied to the US market come
with an E-STOP Remote with Auxiliary Input for Normally
Closed (NC) door switch.
Into this input, the client can connect either an interlock
jumper, a door switch or any additional safety item, e.g.
output of PIR sensor for observing the area around the
laser projector.
Q: Is this projector compatible with other Kvant projectors?
A: All Kvant projectors manufactured from 06/2014 and
later are fully compatible with each other. To check and
ensure compatibility with older Kvant projectors made
prior 05/2014, please contact the technical support
representative of Kvant Lasers, s.r.o.
Suppose Spectrum LD projector with Saturn9 scanning
set is used with non-LD projectors. In that case,
it is recommended to decrease the maximum size and
scan rate of the non-LD system(s) to meet the LD system
limits and full compatibility. If more systems from various
manufacturers are used together, it is recommended
to use a separate ILDA signal source for each
manufacturer’s group.
