©
National Instruments Corporation
7
SCC-DO01 Isolated Digital Output Module User Guide
Figure 3.
Load Current versus Output Voltage, Configuration 1
Figure 4.
Load Current versus Output Voltage, Configuration 2
Propagation delay
Low to high ..................................... 400
µ
s typ
1
High to low ..................................... 300
µ
s typ
1
Rise time ................................................ 120
µ
s typ
Fall time ................................................. 25
µ
s typ
1
The switching characteristics (turn-on time, switching time, and turn-off time) of the optical isolator used on the board limit
the data transfer rate.
0.1
0
40
80
120
0.5
0.9
Load Current
I
O1
(mA)
1.3
1.7
Output Voltage Level (V)
24
0
40
80
22
20
Output Voltage Level (V)
Load Current
I
O2
(mA)
18
16
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