
Chapter 2 Installation
13
termination resistance, you can set the termination jumpers on
the board as follows:
•
Position the board on a firm surface, with the gold
connectors pointing towards you and the phone jack
sockets to your right. Handle the card by the edges,
being careful not to touch the gold connectors;
moisture or oil from your fingers could prevent the
connectors from making a solid connection to your
computer.
•
Locate the jumpers. Directly to the left of the larger
jack socket (labeled J9) is a black box (labeled L5).
Directly to the left of the black box are two small black
pieces of plastic with no markings on them. These are
the jumpers. They are on jumper blocks, which are
labeled J3 and J10. See the diagram below.
J10
J3
J9
L5
T1
T2
•
Next to each jumper block are numbers indicating the
pins: 1, 2, and 3. The board is shipped with pins 2 and
3 covered by a jumper; to enable the termination
circuitry, you need to move the jumpers to pins 1 and 2
on each block. See the illustration below.
Start with the jumper closest to you. Gently pull the
jumper straight up and move it to pins 1 and 2. Push it
down gently onto the pins. Repeat the procedure with
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