How to Isolate Trigger Signals for Multiple Lasers and a Camera?

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SUMMARY

The discussion focuses on isolating trigger signals for a system with two lasers and a single camera. The proposed solution of using a Tee junction for connecting the laser triggers to the camera is ineffective, as it causes cross-triggering between the lasers. Participants recommend avoiding the Tee junction and suggest implementing proper isolation methods to prevent signal interference. Clarification on the voltage requirements for the pulse generator and camera trigger is also necessary for a complete solution.

PREREQUISITES
  • Understanding of electrical circuits and signal isolation techniques
  • Knowledge of laser trigger mechanisms and camera triggering
  • Familiarity with pulse generators and their voltage outputs
  • Basic electronics components, such as diodes or relays for isolation
NEXT STEPS
  • Research methods for electrical isolation, such as opto-isolators or relays
  • Learn about the specifications and requirements for camera triggering
  • Investigate the use of diodes to prevent backfeeding of signals
  • Explore circuit design principles for managing multiple trigger inputs
USEFUL FOR

Electronics engineers, robotics developers, and hobbyists working with laser systems and camera integration who need to manage multiple trigger signals without interference.

thh
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Hello everyone!

I have a system with 2 lasers and a single camera. I have two trigger inputs going to each laser, they have a delay of minimum 350ms. These triggers are split and need to be connected to the camera to open it whenever the lasers fire. So i thought of a Tee junction where i will have both the laser triggers coming in and a single output to the camera. Now the problem with this arrangement is that when laser 1 is triggered, the signal will go to the camera and also laser 2, due to the Tee, which will cause it to fire. How do i stop the signal from laser1 trigger from going to the laser 2 trigger and vice versa? I have attached an image of the arrangement.

Any help would be greatly appreciated.
Thank You
Thh
 

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You need to keep the circuits separate. You "thought of a tee" now you are asking how to avoid the disadvantage of a tee. Don't use a tee.

Either that, or I am totally misunderstanding your question.
 
We need an easy method of isolation. Can you say what voltage is coming out of the pulse gen and what the camera requires to trigger?
 

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