Video loss from HDMI input

HDMI connections are crucial for high-quality video streaming with the GPX Mobile, especially when used with data loggers like the VBOX.
However, users may encounter video loss due to cable issues, port damage, or configuration errors.
This article provides troubleshooting steps and best practices to resolve and prevent HDMI video loss.

1. Intermittent HDMI Video Loss

• Cause: Damaged or loose HDMI cables.

• Solution:

  • Regularly inspect the HDMI cable for visible signs of wear, such as fraying or bent connectors.

  • Ensure the cable is securely connected to both the GPX Mobile and the data logger. Reseat the cables as necessary

  • Test with a known working HDMI cable to rule out cable defects.

  • Avoid excessive cable bending or stress, which can cause internal damage.

  • Avoid using cable ties that are excessively tightened which can pinch, crush, and damaged sensitive cables. The use of velcro is the recommended alternative.

2. Persistent HDMI Video Loss

• Cause: Improper configuration or disabled HDMI output on the VBOX.

• Solution:

  • Verify that the HDMI output is enabled on the VBOX data logger. Refer to the VBOX documentation for instructions on enabling this setting.

  • Ensure the correct HDMI input is selected on the GPX Mobile device.

  • If the issue persists, try connecting the HDMI cable to another display to confirm the output signal from the VBOX.

3. No Video Signal Detected

• Cause: Faulty HDMI port or internal hardware issue.

• Solution:

  • Clean the HDMI port on the GPX Mobile and the data logger using compressed air to remove dust or debris.

  • If cleaning does not resolve the issue, contact GPX Support for further diagnostics.

Preventative Measures

1. Use High-Quality HDMI Cables:

   • Use cables with reinforced connectors and shielding to prevent wear and signal interference such as the cables provided by GPX. Slim HDMI cables are less prone to breakage due to their lower weight and flexibility.

2. Secure Cable Connections:

   • Use velcro to minimize movement and strain on the HDMI ports. Cable ties can be used but are not recommended. If using cable ties, avoid over tightening to prevent crushing, pinching, and damaging of the internal wires.

3. Regular Inspections:

   • Periodically check HDMI cables and ports for signs of damage or loose connections.

4. Environmental Protection:

   • Avoid exposing HDMI connections to excessive dust, moisture, vibrations, or RF interference from in-car radio and intercom systems.

When using the GPX Mobile with a VBOX data logger:

• Ensure that the HDMI output is enabled in the VBOX settings.

• Test the setup prior to events to confirm video output functionality and after every reloading of a VBOX scene file.