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Chapter 2
Hardware Overview of the NI 78xxR
3.
1 NI PCIe-784xR/785xR Fuse Location
4.
PCI Express Device Disk Drive Power Connector
(NI PCIe-784xR/785xR Devices)
hard drive connector on PCI Express devices that, when connected,
increases the current the device can supply on the +5 V terminal.
When to Use the Disk Drive Power Connector
PCI Express R Series devices without the disk drive power connector
installed perform identically to other R Series devices for most applications
and with most accessories. For most applications, it is not necessary to
install the disk drive power connector.
However, you should install the disk drive power connector in either of the
following situations:
•
•
Refer to the specifications document for your device for more information
about PCI Express power requirements and power limits.
R Series Multifunction RIO User Manual
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Replace the blown fuse while referring to Figure 2-18 for the fuse
locations.
2 NI PXI-784xR/785xR Fuse Location
Figure 2-18. NI 784xR/785xR Replacement Fuse Location
(Littelfuse Part Number 0453004)
Reinstall the PCI, PCI Express, or PXI device into the computer or PXI
chassis.
The disk drive power connector is a four-pin
You need more power than listed in the device specifications
You are using an R Series accessory with no external power supply,
such as the cRIO-9151
2-28
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