Kvaser USBcan R User's Guide
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Kvaser AB, Mölndal, Sweden
— www.kvaser.com
6.4 Required driver version
You need at least version (CANLIB) 4.3 of the driver to use your Kvaser USBcan R.
6.5 CAN bus termination
Every CAN bus must be terminated with a 120 Ohm resistor at each end of the bus. The
Kvaser USBcan R does not contain any CAN bus terminators, 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.
