ADLINK cPCI-6965 6U CompactPCI Core Dual Core Single Board Computer

Scenario 2: Radar Signal Processing and Display System

In military or meteorological radar processing systems, cPCI-6965D (8HP with PMC) can simultaneously achieve real-time processing of radar data and human-machine interface display. The PMC slot can accommodate dedicated multi-channel high-speed serial or fiber optic communication modules for receiving digital intermediate frequency signals or control commands from radar receivers. The dual independent display function of the GMA X3100 graphics core can display radar PPI (planar position indicator) images on one monitor, while displaying system status and track parameter lists on another monitor. Its powerful data processing capability and graphics acceleration performance provide sufficient hardware foundation for radar software processing.

Tips for troubleshooting common engineering problems

Problem phenomenon 1: The system cannot be powered on, and the power indicator light does not light up

Key points of inspection: Confirm that the power supply to the system slot corresponding to the backplane of the CompactPCI chassis is normal. Check if the board is fully inserted and lock the pop-up device. Try replacing a system slot to troubleshoot the backplane slot issue.

Key point: cPCI-6965 only draws power from the+5V power rail. If the power supply and 5V output capability of the chassis are insufficient (especially when multiple high-power cards are inserted at the same time), it may cause voltage drop and the system cannot start. Suggest measuring whether the+5V voltage on the backplane is within the allowable range of+5%/-3% (i.e. between 4.85V and 5.25V) as per the specifications.

Problem phenomenon 2: Abnormal or garbled serial communication

Key points of inspection: Firstly, confirm the electrical interface standard (RS-232/422/485) of the connected equipment, and check whether the onboard DIP switch (SW1-SW8) is configured correctly. For RS-485 networks, check if the terminal resistors are configured correctly.

Key point: If selecting RS-422/485 mode, it should be noted that the pin definition of DB-9 connector has changed (refer to Table 4-6 in the manual). For example, in RS-422 mode, pins 1 and 2 become TXD - and TXD+, respectively, instead of DCD and RXD in RS-232 mode.

Problem phenomenon 3: Frequent restarts or crashes during system operation

Key points to check: Monitor CPU temperature through Hardware Health Configuration in BIOS. If the temperature continues to be too high (close to or exceeding 100 ° C), check if the chassis fan is faulty or if the air duct is blocked.

Key point: Confirm that the operating system and applications are configured correctly and periodically trigger the watchdog (WDT). If the application program deadlocks and WDT fails to "feed the dog" in a timely manner, it will cause hardware reset. The WDT LED status in BIOS can be used for auxiliary diagnosis.