Quatech RS-232 - Manual (Page 26)

The X8 clock mode locks the ports
hardware clock at eight times the
standard rate. The baud rate the
port runs at will always be eight
times the rate requested by the
application. This mode is useful for
legacy applications which cannot
request baud rates over 115.200.
921,600 X8
The X4 clock mode locks the ports
hardware clock at four times the
standard rate. The baud rate the
port runs at will always be four
times the rate requested by the
application. This mode is useful for
legacy applications which cannot
request baud rates over 115.200.
460,800 X4
The X2 clock mode locks the ports
hardware clock at double the
standard rate. The baud rate the
port runs at will always be double
the rate requested by the
applications. This mode is useful
for legacy applicattions which
cannot request baud rates over
115,200
230,400 X2
The X1 clock mode mimics a
standard COM port. The hardware
drivers lock the clock to the
standard rate. The port will run at
the baud rate requested by the
application.
115,200 X1
Auto clock mode enables
applications to request any baud
rate up to 921,600. The hardware
drivers will select the correct clock
multiplier based on the baud rate
requested
921,600 Auto
Description Max bps Clock Mode
Data Rate Multiplier
6. Double click the hardware class Ports (Com and LPT). Each
Quatech PCI Serial Port listed in this class is a “child device”
of the ESC(LP)-100 “parent device.”
ESC(LP)-100 User's Manual 20