CHAPTER 3: Card Setup
3.5 Clock Modes
The Adapter employs a clocking option that allows you to select from “divide by 4,” “divide by 2,” and “divide by 1” clocking modes. These modes are selected at Headers J1C through J4C.
To select the baud rates commonly associated with COM ports (for example, 2400, 4800, 9600, and 19,200 bps, and so on up to 115.2 kbps), place the jumper in the “divide by 4” mode (marked DIV4).
DIV1
DIV2
DIV4
Figure 3-8. Clocking mode “divide by 4.”
To double these rates, so that the Adapter can communicate at up to a maximum rate of 230.4 kbps, place the jumper in the “divide by 2” position (marked DIV2).
DIV1
DIV2
DIV4
Figure 3-9. Clocking mode “divide by 2.”
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