Sintrones EMUC-B202-W2 USB to Dual Isolated CAN Adapter with SAE J1939 Firmware

Trucks, buses and off-highway machines typically report engine and drivetrain data as SAE J1939 messages on CAN, and telematics or diagnostics software on the vehicle computer needs that traffic without an external gateway. The Sintrones EMUC-B202-W2 is the J1939 build of the EMUC-B202 series: a two-port isolated Mini PCIe card whose firmware supports SAE J1939 alongside basic CAN 2.0B.

On the host side, the EMUC-B202-W2 appears over USB 2.0. Its two CAN ports are backward compatible with CAN 2.0A and run at 100, 125, 250, 500 (default), 800 or 1000 kbit/s, with 250 kbit/s and 500 kbit/s among the options; 50 kbit/s is not supported. The card receives up to 6000 messages per second and offers acceptance filtering, listen-only mode for passive monitoring, error status and configuration kept after a reboot, plus firmware upgrade and an additional driver for Linux SocketCAN.

Both ports reach the outside as DB9 connectors through the supplied cables, wired CAN-L on pin 2, ground on pin 3 and CAN-H on pin 7, with termination set by jumper. A third mounting hole and a USB pin header allow installation away from a Mini Card socket. For general CAN 2.0B buses the EMUC-B202-W1 runs the basic firmware, and for CANopen networks the EMUC-B202-W3 uses the same hardware.

The card draws 1.62 W (490 mA at 3.3 V) and runs from -40 °C to 85 °C, with storage from -55 °C to 95 °C, 5 G vibration from 7 to 2000 Hz and 50 G shock at 0.5 ms. Sintrones lists 2.5 kV HiPOT protection to IEC 60950-1, 2.5 kV surge protection to EN 61000-4-5 and ESD protection to EN 61000-4-2 at 15 kV air and 8 kV contact. It suits Sintrones computers with a free full-size Mini PCIe slot that carries USB 2.0, and we fit and test the EMUC-B202-W2 in the host computer as part of the build, with the DB9 cables brought out to the enclosure.