Impulse 7402 Bedienungsanleitung PDF herunterladen (Seite 9)

Card Setup

Sealevel Systems ULTRA COMM+422.PCI Page 6

Clock Modes

The ULTRA COMM+422.PCI employs a unique clocking option that allows

the end user 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 (i.e. 2400,

4800, 9600, 19.2, … 115.2K Bps) place the jumper in the divide by 4 mode

(silk-screen DIV4).

DIV1

DIV2

DIV4

Figure 7 - Clocking Mode 'Divide By 4’

To double these rates up to a maximum rate for 230.4K bps place the jumper in

the divide by 2 (silk-screen DIV2) position.

DIV1

DIV2

DIV4

Figure 8 - Clocking Mode 'Divide By 2’

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Impulse 7402 Bedienungsanleitung Seite 9