Advantech PCM-4822, User Manual

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18 PCM-4822 User's Manual
DIO port select (J11)
DIO port select
*340H 240H
J11
* default setting
Installing DRAM (SIMMs)
You can install anywhere from 1 MB to 32 MB of on-board DRAM
memory using 1, 2, 4, 8 or 16 MB 72-pin SIMMs (Single In-Line
Memory Modules). Access time should be 70 nsec. or less.
Installing SIMMs
NOTE: The modules can only fit into a socket one way
and their gold pins must point down into the SIMM
socket.
The procedure for installing SIMMs appears below. Please follow
these steps carefully.
1. Ensure that all power supplies to the system are switched Off.
2. Install the SIMM card. Install the SIMM so that its gold pins
point down into the SIMM socket.
3. Slip the SIMM into the socket at a 45 degree angle and carefully
fit the bottom of the card against the connectors.
4. Gently push the SIMM into a perpendicular position until the
clips on the ends of the SIMM sockets snap into place.
5. Check to ensure that the SIMM is correctly seated and all
connector contacts touch. The SIMM should not move around
in its socket.