Connecting an External Power Supply to the NI-9470
- Updated2022-07-29
- 1 minute(s) read
Connecting an External Power Supply to the NI-9470
You must connect an external power supply to each active channel of the NI-9470. The power supplies provide the current for the output channels. Each channel has its own V sup and COM pin, and all COM pins are connected internally in the NI-9470.
Caution Do not install or remove C
Series modules from your system if any external power supplies connected to the
Vsup and COM pins are powered on.
Attention Ne pas installer ou retirer les modules de la Série C de votre système si une
alimentation externe connectée aux broches Vsup et COM est sous tension.
Complete the following steps to connect an external power supply to the NI-9470. Use cables 10 m or shorter for connections from Vsup to COM to the supply to reduce voltage noise and ripple. For lengths longer than 10 m, NI recommends placing more than 2,200 µF of bulk capacitance close to the NI-9470 module.
- Connect the positive lead of the power supply to Vsup.
- Connect the negative lead of the power supply to COM.