© 2018 Thorlabs GmbH
16
OSW12(22)-xxxE
6.3 Switch States
The possible switch states depend on the type of OSW board. The switch state is displayed on
the seven-segment display MO1. It is also indicated by the state signals SW_STAT[0..7] avail-
able at CON4. The switch state is stored in the µC internal nonvolatile memory. When power-
ing-up the OSW board the previous switch state is restored.
OSW12-E (1x2)
State
Description
State Signal SW_STATn
7
6
5
4
3
2
1
0
1
Bare State (2
1
4)
GND
GND
GND
GND
GND
GND
GND
+5V
2
Cross State (2
1
3)
GND
GND
GND
GND
GND
GND
+5V
GND
OSW22-E (2x2)
State
Description
State Signal SW_STATn
7
6
5
4
3
2
1
0
1
Bare State (1
1
3; 2
1
4)
GND
GND
+5V
GND
GND
GND
GND
+5V
2
Cross State (1
1
4; 2
1
3)
GND
GND
GND
+5V
GND
GND
+5V
GND
OSW14-E (1x4, Option)
State
Description
State Signal SW_STATn
7
6
5
4
3
2
1
0
1
Port A
GND
GND
GND
GND
GND
GND
GND
+5V
2
Port B
GND
GND
GND
GND
GND
GND
+5V
GND
3
Port C
GND
GND
GND
GND
GND
+5V
GND
GND
4
Port D
GND
GND
GND
GND
+5V
GND
GND
GND
OSW18-E (1x8, Option)
State
Description
State Signal SW_STATn
7
6
5
4
3
2
1
0
1
Port A
GND
GND
GND
GND
GND
GND
GND
+5V
2
Port B
GND
GND
GND
GND
GND
GND
+5V
GND
3
Port C
GND
GND
GND
GND
GND
+5V
GND
GND
4
Port D
GND
GND
GND
GND
+5V
GND
GND
GND
5
Port E
GND
GND
GND
+5V
GND
GND
GND
GND
6
Port F
GND
GND
+5V
GND
GND
GND
GND
GND
7
Port G
GND
+5V
GND
GND
GND
GND
GND
GND
8
Port H
+5V
GND
GND
GND
GND
GND
GND
GND