RS-422/485 Multiport Serial PCI Card
16
7.
Set High Baud Rate
The RS-422/485 card was shipped at the low baud rate
(115.2Kbps maximum). To set to high baud rate to 921.6Kbps
maximum, 2 steps are required:
Change the UART input clock jumper (JP5) to “HI”
Go to the COM port’s settings of Windows’ Device
Manager to let it detect the clock speed automatically
7.1 Windows 2000, XP
Set the JP5 to “HI”
In the Windows COM port properties as the following figure,
select
〝
Data rate
〞
and click on
〝
Detect Crystal
Frequency
〞
The
〝
Crystal Frequency
〞
settings will be set to
〝
14.7456MHZ
〝
, then click
〝
OK
〞
The settings will be saved by Windows. You don’t need to
configure it again whenever you restart the system