Negative Voltage on the NI PCI-6514 Digital I/O Device Hardware: Digital I/O (DIO)>>Isolated>>PCI-6514
Problem: How do I output a negative voltage on my PCI/PXI-6514? Solution: The NI PCI-6514 DIO card is capable of isolated output of -30 to +30V. An external power supply is needed to output signals between these values. To provide the desired voltage to the card, connect the wire from the power supply of HIGHER potential to the desired port’s VCC terminal on the DAQ board, and the wire from the power supply of LESSER potential to the COM pin of the desired port on the DAQ board. In the case of a positive power supply voltage, connect the positive lead of the power supply to VCC on the 6514 and the negative lead of the power supply to COM on the board. In the case of a negative power supply voltage, connect the ground lead from the power supply to VCC, and the negative lead of the power supply to COM. Failure to connect properly could result in damage to the device. Related Links: Products and Services: NI PCI-6514 KB[35DHDV1E]: Why Does My NI-6514/15 Not Output a Digital High? Attachments:
Report Date: 08/12/2005 Last Updated: 05/12/2006 Document ID: 3OBDD3HY |
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