Advantech PCM-3342 User Manual

PCM-3342 User Manual 62.1 Jumpers2.1.1 Jumper List2.1.2 Jumper Settings2.1.3 Jumper DescriptionYou may configure your card to match the needs of your application by setting jump-ers. A jumper is a metal bridge used to close an electric circuit. It consists of twometal pins and a small metal clip (often protected by a plastic cover) that slides overthe pins to connect them. To ìcloseî a jumper, you connect the pins with the clip. Toìopenî 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.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.Generally, you simply need a standard cable to make most connections.J1 COM2 SettingJ1 COM2 SettingPart Number 1653003260Footprint JH3X2S-2MDescription PIN HEADER 3 * 2P 180D (M) 2.0 mm SMD SOUARE PINSetting Function(1-2) RS-232(3-4) RS-485(5-6) RS-4221 2 3