Noisy Output; Dark Patches - Teledyne DALSA HS-40-04k40-xx-R User Manual

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Line Dropout, Bright Lines, or Incorrect Frame Rate
Verify that the frequ ency of the internal sync is set correctly, or w hen the cam era is set to
external sync that the EXSYN C signal su pplied to the cam era d oes not exceed the
cam era's u seable fram e rate u nd er the cu rrent operating cond itions.

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.

Dark Patches

If d ark patches appear in you r ou tpu t the optics p ath m ay have becom e contam inated .
Clean you r lenses and sensor w ind ow s w ith extrem e care.
1. Take stand ard ESD precau tions.
2. Wear latex gloves or finger cots
3. Blow off d u st u sing a filtered blow bottle or d ry, filtered com pressed air.
4. Fold a piece of optical lens cleaning tissu e (approx. 3" x 5") to m ake a squ are pad that
5. Moisten the pad on one ed ge w ith 2-3 d rops of clean solvent—either alcohol or
6. Wipe across the length of the w ind ow in one d irection w ith the m oistened end first,
7. Repeat steps 2-4 u sing a clean tissu e u ntil the entire w ind ow has been cleaned .
8. Blow off any ad hering fibers or particles u sing d ry, filtered com pressed air.
Stuck Bits
If d ata bits seem to be stu ck or d o not change, check that the cam era is not satu rated by
preventing light from entering. To verify the d ata path integrity, check the levels of the 2
test pattern pixels (first 2 pixels follow ing the last End -of-line pixel. You m ay need to tu rn
the End -of-line sequ ence ―on‖ by send ing the com m and
consistent valu e of these pixels (170DN / 85DN ) cou ld be an ind ication of the follow ing:
 shorted bits
 stu ck bits
 d igital noise picku p on the I/ O cable
 open connection.
To activate the test pattern, u se the com m and
proper tim ing and connections betw een the cam era and fram e grabber.
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is approxim ately one finger-w id th
acetone. Do not satu rate the entire pad w ith solvent.
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 .
Piranha HS-xx RoHS User Manual
els 1 ). Any d eviation from a
svm 1 . Use the test pattern to verify the
Teledyne DALSA