Kvaser Mini PCI Express User’s Guide
12 (21)
Figure 5: Molex Connector 53780-0470
Kvaser Mini PCI Express devices that use the 7-pin Molex connector (53780-0770)
have the pinning described in Table 5 on Page 12.
Figure 6: Molex Connector 53780-0770
Molex pin number
Function
1
GND channel 1
2
CAN_L channel 1
3
CAN_H channel 1
4
Shield
5
CAN_L channel 2
6
CAN_H channel 2
7
GND channel 2
Table 5: Molex pin configuration
5.3
CAN bus termination
Every CAN bus must be terminated with a 120 Ohm resistor at each end of the
bus. The Kvaser Mini PCI Express 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.
Kvaser AB, Mölndal, Sweden — www.kvaser.com
