High-Temperature Module Test

August 11, 2022
BKSTEC’s Proprietary Testing Ensures its HDMI Fiber Optic Cables can Withstand up to 167°F (75°C)

Not all HDMI cables are graded for high-temperature storage (HTS), the ability of a device to withstand high temperatures and still function as intended.

While most devices can work in different environments, overheating still remains a big issue, as it can cause thermal damage, disconnection error, screen flicker, or melt parts of the cable. Depending on your OEM requirements, BKSTEC uses a proprietary instrument to simulate all the scenarios where HDMI cables will be exposed to heat. The result is validated through the Teledyne LeCroy 780E signal generator/analyzer to simultaneously test the display and source end of a cable. In this way, BKSTEC ensures there’s no signal degradation even as heat emitted from electronic devices grows, regardless of location, environment, or application.

Set up to 167°F (75°C)

High-Temperature Module Test Step by Step

  1. Samples are selected from each product model during Engineering Validation Test (EVT) and Production Validation Test (PVT)
  2. The cables are inserted on one end of BKSTEC’s instrument and softly clamped in place.
  3. With an exposed HDMI connector on the other end of the instrument, each connector head is then attached to the video generator/analyzer to validate the signal quality
  4. All connector heads and cables are gradually exposed to rising temperatures from BKSTEC’s instrument at 3 minutes per cycle
  5. The test begins with room temperature, gradually rising up per each cycle
  6. With each increase in temperature, the protocol logging application auxiliary channel analyzer (ACA) enables real-time monitoring and the ability to filter events through 780E’s logs for a holistic view of the cable performances 
  7. The test will carry on for 96 hours (4 days) and will conclude if the cables can still output signal up to BKSTEC’s standards after being exposed to 167°F (75°C) of heat.

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