National Instruments NI 9253 User Manual

Connecting an External Power Supply
You can connect an external power supply to the NI 9253. This
power supply provides the current for the devices you connect to
the module. Connect the positive lead of the power supply to a
V
sup
pin and the negative lead of the power supply to COM.
Install a 2 A maximum, fast-acting fuse between the external
power supply and the V
sup
pin.
Note The V
sup
pins are internally connected to each
other. You can connect only one external voltage
supply to the device.
Caution Do not remove or insert modules if the
external power supply connected to the V
sup
and COM
pins is powered on.
Attention Ne retirez ou n'insérez pas de modules si
l'alimentation externe connectée aux broches V
sup
et
COM est sous tension.
NI 9253 Getting Started Guide | © National Instruments | 7

National Instruments NI 9253 Specifications

General

Brand	National Instruments
Model	NI 9253
Category	I/O Systems
Language	English