Connect-tech CANpro/104-Plus Manual de usuario descargar pdf (Pagina 9)

CANpro/104-Plus Opto User Manual

9 www.connecttech.com CTIM-00052 Revision 0.00 4/23/2009

800-426-8979 | 519-836-1291

On-Board Jumper Configuration

Figure 3: CAN Ports and Jumper Locations

120 Ohm Termination Jumpers

Jumpers J1 and J4 will enable a 120 Ohm termination resistor across the CAN-H and CAN-L lines.

Termination is always recommended for improved signal integrity, especially for long transmission lines.

Termination requirements should be evaluated on a case by case basis. Typically both ends of a CAN bus are

terminated, but termination is not enabled on cards that sit in the middle of the bus. See Figure 4 and Figure 5

for examples that indicate when to use this jumper selection.

Figure 4: Example – CANpro/104-Plus Opto at the end of a CAN bus

NOTE:

The 120 Ohm termination jumper must be installed in this

situation.

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Connect-tech CANpro/104-Plus Manual de usuario Pagina 9