Chapter 3
Signal Connections
NI 951x User Manual
3-8
ni.com
Figure 3-4 shows an example of wiring the output to a sinking input device.
Figure 3-5 shows an example of wiring the output to a sourcing input
device.
Figure 3-4.
Drive Enable Circuit Configured for Sourcing
Figure 3-5.
Drive Enable Circuit Configured for Sinking
Drive Enable or
Digital Output
COM
NI 951x
NI 951x V
sup
NPN (Sinking)
Input Device
Configured
For Sourcing
Sinking
Circuit
V–
(Reference)
In
Drive Enable or
Digital Output
V+
V+
Drive Enable or
Digital Output
COM
NI 951x
NI 951x V
sup
PNP (Sourcing)
Input Device
Configured
For Sinking
Sourcing
Circuit
V–
(Reference)
In
Drive Enable or
Digital Output