Switch on
bit = 0 Switch off
bit = 1 Serial 1 uses SW1
Serial 2 uses SW2
Factory default setting for Serial 1 --- 03F8 hex (COM1)
ON
12345678
8 2 1
F
48
8
2 1
3
0

SW1

Factory default setting for Serial 2 --- 02F8 hex (COM2)
ON
12345678
8 2 1
F
48
8
2 0
2
0

SW2

Example: 03E8 hex (typical for COM3)
ON
12345678
8 2 0
E
48
8
2 1
3
0
Example: 02E8 hex (typical for COM4)
ON
12345678
8 2 0
E
48
8
2 0
2
0

Figure 4 --- Serial Port base I/O address selection switches

Quatech
DS-102 User's Manual
5