where do I put the termination resistor for the Rs485 card

[GaryZ21]

Where can I put the termination resistor for the RS485 card?  I have the PCI 485/4.  Looking at the card from the top, I see 4 (620ohm) resistors for each of the ports.  Where can I tie the termination resistor for this card?  Should i tie it inside the card, at the connector to the card, or at the end of the connector cable from the card?

[Ebele_Obijiofor]

Hi GaryZ21,
Your termination resistor should be placed at the extreme end of the data line, which will be the end of the connector cable in your case. The link below has some information about termination:

http://www.ni.com/support/serial/resinfo.htm

Hope this helps!