Impulse 3405 - Manual (Page 9)

Card Setup
Sealevel Systems VERSA COMM+4/EX Page 6
Clock Modes
The VERSA COMM+4/EX 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.
This mode is selected at J5.
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’
To select the maximum data rate (460.8K bps) place the jumper in the divide by
1 (silk-screen DIV1) position.
DIV1
DIV2
DIV4
Figure 9 - Clocking Mode ‘Divide By 1’