Advantech 4-Port RS-232 Interface card PCL-849 - Manual (Page 19)

2 0 PCL-849 User's Manual
Speed Mode selection
The PCL-849 employs a unique speed option that allows the user to
choose either normal speed mode (1x) or high speed mode (8x). This
high speed mode is selected at S2.
Normal Speed Mode
To select the baud rate commonly associated with COM ports , such
as 2400, 4800, 9600. . .115.2 kbps, place the switch as follows.
High Speed Mode
To increase normal mode rates by eight times, (e.g. if 115.2 kbps is
selected, the rate is increased to 921.6 kbps), place the switch as
follows.