ADLINK NuPRO-780 PICMG Bus Core CPU Card

Scenario 2: Rail Transit PIS System

The passenger information system (PIS) control host of a certain train needs to play audio broadcasts and video advertisements, and connect multiple terminal display devices inside the carriage through RS-485 bus. The AC'97 audio interface of NuPRO-780, when paired with DB-AC97S daughter card, can provide high-quality audio output; The RS-485+mode of COM2 enables reliable half duplex communication with terminal devices, and automatic direction control simplifies software development work. Its wide temperature range (0 ° C to 55 ° C) and anti vibration design are perfectly adapted to the in car environment.

Scenario 3: Upgrading and renovating old systems

The CNC machine control system of a certain factory is still using a dedicated data acquisition card based on ISA bus, but the original motherboard is aging and difficult to purchase substitutes. Choosing NuPRO-780, its ISA high driver 64mA feature ensures compatibility with both new and old ISA cards; Support Socket 370 full series CPUs, which can flexibly match the original system performance without the need for large-scale rewriting of application software (legacy programs based on Windows 98/NT can be directly migrated).

Tips for troubleshooting common engineering problems

Problem phenomenon 1: There is no display when the system is turned on, and VGA has no output

Key points of inspection: Confirm that the CPU is installed correctly and the CPU fan is rotating normally. Check if the memory module is fully inserted into the DIMM slot. Try using a PCI graphics card for diagnosis and troubleshooting of integrated VGA issues.

Key point: The VGA memory of NuPRO-780 comes from system main memory sharing. If the memory is not installed correctly or has poor compatibility, it may cause the integrated VGA to not work properly.

Problem phenomenon 2: COM2 serial communication abnormality

Key inspection points: Confirm whether the combination of jumpers JP4, JP3, and JP2 matches the standard of the connected device (RS-232/422/485).

Key point: In RS-485 mode, if using RS-485+mode, JP1 must be set to 2-3 and 5-6; If using standard RS-485, set it to 1-2 and 4-5. Incorrect settings will result in the failure of data direction control.

Problem phenomenon 3: The system frequently resets automatically

Key inspection points: Check the CPU temperature through the hardware monitoring function in the BIOS. If it continues to exceed 80 ° C, check whether the CPU heat sink is in good contact and whether the fan is stopped. Check if the watchdog timer has been accidentally enabled and correctly fed to the dog in the application.

Key point: Temporarily disable the watchdog function in BIOS for troubleshooting testing to confirm whether the reset is triggered by WDT or caused by power or cooling issues.