Dalsa Piranha3, User Manual

Page: 69 / 91

Piranha 3 User Manual
DALSA 03-032-10216-02
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Noisy Output
Check your power supply voltage outputs for noise. Noise present on these lines can
result in poor video quality. Low quality or non-twisted pair cable can also add noise to
the video output.
Dark Patches
If dark patches appear in your output the optics path may have become contaminated.
Clean your lenses and sensor windows with extreme care.
1. Take standard ESD precautions.
2. Wear latex gloves or finger cots
3. Blow off dust using a filtered blow bottle or dry, filtered compressed air.
4. Fold a piece of optical lens cleaning tissue (approx. 3" x 5") to make a square pad that
is approximately one finger-width
5. Moisten the pad on one edge with 2-3 drops of clean solvent—either alcohol or
acetone. Do not saturate the entire pad with solvent.
6. Wipe across the length of the window in one direction with the moistened end first,
followed by the rest of the pad. The dry part of the pad should follow the moistened
end. The goal is to prevent solvent from evaporating from the window surface, as
this will end up leaving residue and streaking behind.
7. Repeat steps 2-4 using a clean tissue until the entire window has been cleaned.
Blow off any adhering fibers or particles using dry, filtered compressed air.
Horizontal Lines or Patterns in Image
A faulty or irregular encoder signal that is applied as the EXSYNC signal may result in
horizontal lines due to exposure time fluctuations; ensure that your exposure time is
regular. If you have verified that your exposure time is consistent and patterns of low
frequency intensity variations still occur, ensure that you are using a DC or high
frequency light source and that no ambient light is affecting your system.