User Manual

PCAN-USB – User Manual
15
3.4 Cabling
3.4.1 Termination
The High-speed CAN bus (ISO 11898-2) must be terminated with
120 ohms on both ends. The termination prevents interfering signal
reflections and ensures the proper operation of the transceivers of
the connected CAN nodes (CAN interfaces, control devices).
The PCAN-USB adapter to S/N 199999 does not have an internal
termination. From S/N 200000 it has an optional internal termination
with 120 Ohms. See the previous section 3.3 for information about
ac
tivation.
3.4.2 Example of a Connection
Figure 8: Simple CAN connection
This example shows a connection between the PCAN-USB adapter
and a control unit. The connection cable is terminated with 120
ohms at both ends.