ADLINK Express HL Module Selection and Heat Dissipation Configuration Guide

Try resetting BIOS to default (via SEMA or jumper) to eliminate incorrect video output settings.

If using VGA, check if the DAC load is too heavy (it is recommended to use a standard 75 Ω terminal).

7.4 PCIe devices not recognized

Check the PCIe port configuration in BIOS (whether specific lanes are turned off).

Confirm that the device supports Gen3 or can be downgraded to Gen2 (try BIOS forcing Gen2).

Measure whether the PCIe reference clock (100 MHz) and reset signal (PERST #) are normal.

7.5 USB 3.0 or SATA performance abnormalities

Confirm that the drivers have been installed with Intel chipset drivers and USB 3.0 host controller drivers.

SATA ports support 6 Gb/s, but require appropriate cables and storage devices.

If multiple high-speed devices are connected simultaneously, pay attention to the total bandwidth limit (DMI 2.0 is about 2 GB/s).

Key points of carrier board design and Starter Kit reference

For teams using Express HL for the first time, it is strongly recommended to purchase the COM Express Type 6 Starter Kit Plus, which includes the Express-BASE6 carrier board, power supply, and accessory kit. This carrier board provides a complete interface circuit and reference design, and developers can customize based on its schematic, effectively shortening the hardware development cycle.

Key carrier board signal:

Four SATA ports require+5V power supply and correct interfaces.

USB 3.0 requires strict control over differential impedance (90 Ω) and equal length.

The three DDI ports need to be configured with level conversion according to the output type (such as HDMI requiring+5V and DDC).

A level conversion chip (RS-232/422/485) needs to be added to the serial port to match external devices.

Long term stability and maintenance recommendations

Regular cleaning: Dust accumulation can reduce heat dissipation efficiency. In industrial environments, it is recommended to check fans and heat sinks every six months.

Firmware update: Follow the new BIOS and SEMA firmware released on the ADLINK official website to fix known issues and improve compatibility.

Storage medium: Use industrial grade SSDs (wide temperature, high TBW) to avoid premature damage of consumer grade products in harsh environments.

Log recording: Regularly export operation logs through SEMA's forensic information function for fault precursor analysis.