Cpu Clock Ratio Selection (Jp12) - Advantech PCA-6155V Manual

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The jumper settings are schematically depicted in this manual as
follows:
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You may find a pair of needle-nose pliers useful for setting the
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.

1.8.1 CPU clock ratio selection (JP12)

In order for the system to function properly, the jumpers must be set to
accommodate the CPU installed on the CPU card. These jumpers set
the frequency ratio between the internal frequency of the CPU and the
external frequency (called the bus clock) within the CPU. Such
jumpers must be set together with the jumpers for the CPU external
(bus) frequency selection.
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Chapter 1 Hardware Configuration
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