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Avoiding EMI and ESD Problems#

This topic tells you how to avoid faulty camera behavior due to electromagnetic interference (EMI) and electrostatic discharge (ESD).

General Information#

Basler cameras are frequently installed in industrial environments. These environments often include devices that generate electromagnetic interference (EMI) and may cause electrostatic discharge (ESD). This can lead to operational faults like false triggering or the unplanned stopping of image acquisition. EMI and ESD can also negatively affect the quality of the images transmitted out of the camera.


To avoid faulty camera behavior due to EMI and ESD, follow these general guidelines:

  • Install the camera as far as possible from devices generating sparks or strong electromagnetic fields.
  • Keep the cable away from unshielded electric motors, transformers, unshielded coils, and electrical devices that employ switching technology.
  • Always use high-quality shielded cables. The use of high-quality cables is one of the best defenses against EMI and ESD.
  • Try to use camera cables that are only as long as necessary and try to run the camera cables and power cables parallel to each other. Avoid coiling camera cables. If the cables are too long, use a meandering path rather then coiling the cables.
  • Attempt to connect all grounds to a single point, e.g., use a single power outlet for the entire system and connect all grounds to the single outlet. This helps to avoid large ground loops. (Large ground loops can be a primary cause of EMI problems.)
  • Use a line filter on the main power supply.
  • Decrease the risk of electrostatic discharge by taking the following measures:
    • Use conductive materials at the point of installation (e.g., floor, workplace).
    • Use suitable clothing (cotton) and shoes.
    • Control the humidity in your environment. Low humidity can cause ESD problems.

The Basler application note Avoiding EMI and ESD in Basler Camera Installations provides more detailed information about avoiding EMI and ESD.