OHAUS T72XW Mode D'emploi page 6

EN-4
USB WITH DISCRETE I/O CONNECTIONS
The USB I/O option board (Figure 1-10) is positioned in option position 1 on the Main board (Figure 1-
3). This option board provides a single USB type B connector port with two isolated inputs and four
dry-contact, normally open relay outputs. The inputs can be selected as either active or passive based
on the position of the slide switch on the board. The connectors and switch are visible in Figure 1-10.
Notes
1. Use only shielded cable
2. Maximum cable length: 50 feet (15 meters)
3. Wire size: 18 AWG (0.832 mm
Notes
1. Use only shielded cable
2. Maximum cable length: 1000 feet (304 meters)
3. Wire size: 18 AWG (0.832 mm
Figure 1-9: Sample COM2 Connections
Figure 1-10: USB/DIO Option Board
24 AWG (0.205 mm
2
24 AWG (0.205 mm
2
T72XW Options Manual
2 ) Maximum
) Maximum
2
) Maximum
) Maximum