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PPC-155T User Manual 32
Chapter 5 Jumpers & Connectors
5.1 Jumpers and Connectors
This chapter supplies more detailed information about the internal jumper settings
and an outline of the I/O ports avaialable on the PPC-155T.
5.1.1 Setting jumpers
The Panel PC can be configured to match the needs of each application by setting
the jumpers. A jumper is the simplest kind of electrical switch. It consists of two metal
pins and a small metal clip (often protected by a plastic cover), which slides over the
pins to close the circuit and connect them. To “close” a jumper, connect the pins with
the 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 2
and 3 to each other.
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 there are
any doubts about the best hardware configuration for a particular application, contact
the local distributor or sales representative before making any changes.
An arrow is printed on the motherboard to indicate the first pin of each jumper.
5.1.2 Jumpers
The motherboard of the Vehicle Mounted Computer has a number of jumpers that
help configure the system. It also has LED indicator lamps that display the system
operation status. The table below lists the function of each jumper and LED.
The motherboard of the PPC-155T has a number of jumpers that allow you to config-
ure your system to suit your applications.
Open Closed Closed 2 - 3
Open Closed Closed 2 - 3