Figure 35. sbRIO-960x Front Mounting Holes
1
1
1. Front Mounting Holes
Figure 36. sbRIO-962x/sbRIO-963x Front Mounting Holes
1
1
1
1. Front Mounting Holes
The front I/O connector shields, chassis ground bracket, and mounting holes near the front I/O
are connected together internally to form chassis ground. Chassis ground is capacitively
coupled to digital ground near each of the IO connectors. For the best possible ESD protection,
connect chassis ground at the mounting holes to a low-inductance earth ground.
When connecting the NI sbRIO-96xx to external devices, ensure that stray ground currents are
not using the device as a return path. Significant stray currents traversing through the NI
sbRIO-96xx can result in device failure.
To verify correct grounding of the NI sbRIO-96xx, make sure the current flowing into the
power connector equals the current flowing out of the power connector. These currents should
be measured with a current probe after final assembly of the end system. Investigate and
remove any current differences.
Connecting the sbRIO-96xx to Power
The NI sbRIO-96xx requires a 9 V DC to 30 V DC external power supply. The NI
sbRIO-96xx filters and regulates the supplied power and provides power for RMCs.
Note
Refer to the device specifications for the power requirements, formulas and
examples for calculating power requirements for different configurations and
application types, and proper wiring of the power cable assembly.
42
|
ni.com
|
CompactRIO Single-Board Controller with NI-DAQmx Hardware Installation Manual