Quatech QSC(LP)-300 user manual Data Rate Multiplier

		Data Rate Multiplier
Clock Mode	Max bps	Description
		Auto clock mode enables applications to request any
Auto	921,600	baud rate up to 921,600. The hardware drivers will
		select the correct clock multiplier based on the baud
		rate requested
		The X1 clock mode mimics a standard COM port. The
X1	115,200	hardware drivers lock the clock to the standard rate.
		The port will run at the baud rate requested by the
		application.
		The X2 clock mode locks the ports hardware clock at
		double the standard rate. The baud rate the port runs at
X2	230,400	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
		The X4 clock mode locks the ports hardware clock at
		four times the standard rate. The baud rate the port
X4	460,800	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.
		The X8 clock mode locks the ports hardware clock at
		eight times the standard rate. The baud rate the port
X8	921,600	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.

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 QSC(LP)-200/300 “parent device.”

7.Open the Properties dialog for a COM port, then click the RS-422/485tab to view the settings for that port.

Quatech QSC(LP)-200/300 User's Manual 18