«CamName» User’s Manual
25
DALSA Corp.
03-32-00253-13
•
Digital Output—
Do not probe LVDS data signals with a scope probe unless it has less
than 0.5pf of capacitance. If you can probe safely, use LVAL to trigger the scope
sweep. Illuminate the camera target and check each individual data bit on ch2 of the
oscilloscope (±D0 - D7 on the digital output connector). The digital output data signal
should change value when light is blocked from the camera lens.
If any of the above signals are missing, contact DALSA product support.
4.2 Specific Solutions
No Output or Erratic Behavior
If your camera provides no output or behaves erratically, it may be picking up random
noise from long cables acting as antennae. Where possible, connect unused pins to known
logic levels. Do not attach wires to unused pins. Verify that the camera is not receiving
spurious PRIN, MCLK, or USR_EN inputs.
Line Dropout, Bright Lines, or Incorrect Line Rate
Verify that the frequency of EXSYNC supplied to the camera does not exceed the
camera’s maximum specified line rate.
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.
Verify that your acquisition system samples data on the
rising edge
of STROBE.
Offset Varies or Drifts
The camera will experience offset drift and the dark level will increase if the camera’s
EXSYNC signal stops or is below 300 Hz. The camera is meant to be run with a
continuous EXSYNC frequency. EXSYNC should pulse to logic HIGH to start the readout
of each line, return to logic LOW, and stay LOW until after line readout and clamping.
Vertical Patterns in Output
If dark columns or vertical patterns appear in your output, the optical path may be
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.
Summary of Contents for PIRANHA CL-P1
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