DI16
DI17
DI18
DI19
DI20
DI21
DI22
DI23
Vsup
Vsup
DI24
DI25
DI26
DI27
DI28
DI29
DI30
DI31
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
Vsup
Vsup
DI8
DI9
DI10
DI11
DI12
DI13
DI14
DI15
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Signal
Description
DI
Digital input signal connection
NC
No connection
V
sup
Voltage supply connection
Table 1. Signal Descriptions
Connecting a Sinking-Output Device
You can connect 2- and 3-wire sinking-output devices to the NI-9426.
NI 9426
+
_
DI
Vsup
Sinking-Output
Device
External
Power
Supply
The NI-9426 channel registers as ON when the sinking-output device drives the
input below Vsup and meets the input ON range. If no device is connected to DI, the
channel registers as OFF.
Where to Go Next
© National Instruments
9
NI-9426 Getting Started
