User manual

PCM-3353 User Manual 8
2.4 Setting Jumpers
You 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 two
metal pins and a small metal clip (often protected by a plastic cover) that slides over
the pins to connect them. To “close” a jumper, you connect the pins with the clip. To
“open” 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 have
any doubts about the best hardware configuration for your application, contact your
local distributor or sales representative before you make any changes. Generally, you
simply need a standard cable to make most connections.
2.5 Installing SO-DIMMs
The procedures for installing SODIMMs are described below. Please follow these
steps carefully. You can install SDRAM memory modules using 200-pin SODIMMs
(Small Outline Dual In-line Memory Modules).
1. Ensure that all power supplies to the system are switched off.
2. Tilt the SODIMM card just above the board and slide it into the housing card
slot.
3. Push the module into the socket until the module gently snaps in. There should
only be a slight insertion force to engage the module into the contacts. Make
sure that the module and the housing are aligned and locked in place.
open closed closed 2-3
open
closed closed 2-3