PPC-157T User Manual 285.1 Jumpers and ConnectorsThis chapter supplies more detailed information about the internal jumper settingsand an outline of the I/O ports available on the PPC-157T.5.1.1 Setting JumpersThe Panel PC can be configured to match the needs of each application by settingthe jumpers. A jumper is the simplest kind of electrical switch. It consists of two metalpins and a small metal clip (often protected by a plastic cover), which slides over thepins to close the circuit and connect them. To ”close” a jumper, connect the pins withthe clip. To “open” a jumper, remove the clip. Sometimes a jumper has three pins,labeled 1, 2, and 3. In this case, it is possible to connect either pins 1 and 2 or pins 2and 3 to each other.Open Closed Closed 2-3The jumper settings are schematically depicted in this manual as follows:Open Closed Closed 2-3A pair of needle-nose pliers may be helpful when working with jumpers. If there areany doubts about the best hardware configuration for a particular application, contactthe local distributor or sales representative before making any changes.An arrow is printed on the motherboard to indicate the first pin of each jumper.1 2 3
