Card
Setup
Sealevel Systems
ULTRA
COMM+I.PCI
Page
5
Clock Modes
The
ULTRA COMM+I.PCI
employs a unique clocking option that allows the
end user to select from divide by 4 and divide by 1 clocking modes. These
modes are selected at switches SW-2.
To select the Baud rates commonly associated with COM: ports (i.e. 2400,
4800, 9600, 19.2, … 115.2K Bps) set switch position 2 to the ‘On’ position
(silk-screen D4). To select the maximum data rate (460.8K bps) set switch
position 1 to the ‘On’ position (silk-screen D1).
Figure 7 - Clocking Modes
D
1
D
4
A
T
R
T
1 2 3 4
ON
OFF
SW2
Divide by
1 mode
Divide by
4 mode
1 2 3 4
ON
OFF
D
1
D
4
A
T
R
T
SW2
