Advantech PCM-9388 User Manual

Also see for PCM-9388: Startup manual

9 PCM-9388 User ManualChapter 2 H/W installation2.1.3 Jumper DescriptionCards can be configured by setting jumpers. A jumper is a metal bridge used to closean electric circuit. It consists of two metal pins and a small metal clip (often protectedby a plastic cover) that slides over the pins to connect them. To close a jumper, youconnect the pins with the clip. To open a jumper, you remove the clip. Sometimes ajumper will have three pins, labeled 1, 2 and 3. In this case you would connect eitherpins 1 and 2, or 2 and 3.The jumper settings are schematically depicted in this manual as follows:A pair of needle-nose pliers may be helpful when working with jumpers. If you haveany doubts about the best hardware configuration for your application, contact yourlocal distributor or sales representative before you make any changes.Setting Function1-2 +5 V2-3 +3.3 VWarning! To avoid damaging the computer, always turn off the power supplybefore setting jumpers. Clear CMOS. Before turning on the power sup-ply, set the jumper back to 3.0 V Battery On.1 21 2 1 2 3