Image Brightness (Shutter Time And Gain) - Fastus LS Series User Manual

5.4.2

Image Brightness (Shutter Time and Gain)

Use shutter time and gain to adjust the camera screen brightness.
With "Auto adjust", the shutter speed will be adjusted to the optimum value.
Shutter
z z
Set the camera shutter time. Set this value in steps of 5 μs.
The longer the shutter time, the brighter the images that can be taken. However, the images may be
blurred for workpieces moving at high speeds.
Gain
z z
Set the camera gain.
The larger the value, the higher the gain, which makes it possible to perform measurements even with
small amounts of reflected light.
If you increase the gain too much, there will be lots of noise, which may lead to unstable measurements.
Auto adjust
z z
Optimize capturing condition automatically that matches with currently set work piece.
Set the work piece to measure at the adequate position and execute "Auto adjust".
Don't move the work piece while "Auto adjust" is proceeded.
When external trigger is used, check the profile is captured as you expected for around 20 to 50 times,
depends on the condition, to make sure.
Tips
• "Mode", "Gain", "shutter time", "Threshold" and "Reject Level" will be adjusted automatically by "Auto
adjust".
• When you do not use automatic adjustment, set the shutter speed and the gain, and then adjust these
settings so that the appropriate received light waveform is generated. If the amount of light is
insufficient (the center waveform) or is too large (the lower-right waveform), it will be difficult to perform
accurate measurements. Adjust the shutter speed and the gain until the received light waveform
becomes like the one shown below in the lower-left.
Appropriate shutter speed
Ramco National
Insufficient amount of light
→ Make the shutter time longer. → Make the shutter time shorter.
800-280-6933 | nsales@ramcoi.com
Camera Settings
Too large amount of light
www.Optex-Ramco.com
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