Kvaser USBcan Pro 4xHS User’s Guide
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Figure 7: The HD26-4xDS9 Splitter
4.5
CAN bus termination
Every CAN bus must be terminated with a 120 Ohm resistor at each end of the
bus. The Kvaser USBcan Pro 4xHS does not contain any CAN bus termination,
because their inclusion could cause severe disturbance in a system which is
already correctly terminated.
For laboratory or testing use, the exact value of the termination resistors is not
always critical. Sometimes a single terminator is sufficient. For production, proper
termination is essential. If you see error frames on the bus, you should check the
termination.
To save yourself a lot of trouble, always terminate the CAN
bus properly.
4.6
Updating the firmware
For the Kvaser USBcan Pro 4xHS to communicate with the host computer,
compatible versions of the Kvaser CANlib (including driver) and firmware must be
installed.
The latest versions of firmware and drivers can be downloaded for free at
www.kvaser.com/download.
Kvaser AB, Mölndal, Sweden — www.kvaser.com
