IBM All-in-One FC/Socket 370 Celeron, PCM-6890B manual Setting jumpers

Setting jumpers

You can configure your card to match the needs of your application by setting jumpers. A jumper is the simplest kind of electric switch. It consists of two metal pins and a small metal clip (often protected by a plastic cover) that slides over the pins to connect them. To “close” a jumper you connect the pins with the clip. To “open” a jumper you remove the clip. Sometimes a jumper will have three pins, labeled 1, 2, and 3. In this case you would connect either pins 1 and 2 or 2 and 3.

2	3
1

Open Closed Closed 2-3

The jumper settings are schematically depicted in this manual as follows:

1 2 3

Open Closed Closed 2-3

A pair of needle-nose pliers may be helpful when working with jumpers.

If you have any doubts about the best hardware configuration for your application, contact your local distributor or sales representa- tive before you make any changes.

Chapter 2 Installation 13