Microsoft UNO-3074 user manual IRQ Setting via Switch 1 at SW3, Transmission Rate Switch 2 at SW3

Table 2.2: IRQ Setting via Switch 1 at SW3

Switch 1 at SW3 setting			Function
	1	O	Share IRQ (default)
	2	N
	1	O	Independent IRQ
	2	N

Note: Please Refer to Figure A.3 for location of SW3

Note: After changing the jumper, please also adjust the IRQ through the device manager software for the new set- tings to work properly. (Refer to UNO Serial Port Instal- lation Guide in the CD, steps 7 ~ 10)

Table 2.3: Transmission Rate (Switch 2 at SW3)

Switch 2 at SW3 setting			Function
	1	O	Speed x 8*
	2	N
	1	O	Speed x 1 (default)
	2	N

You can adjust the transmission rate by the second switch of SW3.

*To increase the normal baud rates by eight times, (e.g. if we set the baud rate as 115.2K bps in software, then the actual hardware baud rate will be increased to 921.6K bps), set switch 2 of SW3 to “on”.

Note: Only COM3 and COM4 can adjust the transmission rate.

UNO-3074 User Manual 16