Noisy Output; Dark Patches - Dalsa Piranha 3 Series User Manual

Piranha 3 User Manual

Noisy Output

Check you r pow er su pply voltage ou tpu ts for noise. N oise present on these lines can
resu lt in poor vid eo qu ality. Low qu ality or non -tw isted pair cable can also ad d noise to
the vid eo ou tpu t.

Dark Patches

If d ark patches appear in you r ou tpu t the optics path m ay have becom e contam inated .
Clean you r lenses and sensor w ind ow s w ith extrem e care.
1.
2.
3.
4.
5.
6.
7.
Blow off any ad hering fibers or particles u sin g d ry, filtered com pressed air.
Horizontal Lines or Patterns in Image
A fau lty or irregu lar encod er signal that is applied as the EXSYN C signal m ay resu lt in
horizontal lines d u e to exposu re tim e flu ctu ations; ensu re that you r exposu re tim e is
regu lar. If you have verified that you r exposu re tim e is consistent and patterns of low
frequ ency intensity variations still occu r, ensu re that you are u sing a DC or high
frequ ency light sou rce and that no am bient light is affecting you r system .
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Take stand ard ESD precau tions.
Wear latex gloves or finger cots
Blow off d u st u sing a filtered blow bottle or d ry, filtered com pressed air.
Fold a piece of optical lens cleaning tissu e (approx. 3" x 5") to m ake a squ are pad that
is approxim ately one finger-w id th
Moisten the pad on one ed ge w ith 2-3 d rops of clean solvent—either alcohol or
acetone. Do not satu rate the entire pad w ith solvent.
Wipe across the length of the w ind ow in one d irection w ith the m oistened end first,
follow ed by the rest of the pad . The d ry part of the pad shou ld follow the m oistened
end . The goal is to prevent solvent from evaporating from the w ind ow su rface, as this
w ill end u p leaving resid u e and streaking behind .
Repeat steps 2-4 u sing a clean tissu e u ntil the entire w ind ow has been cleaned .
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