NI 9437 Getting Started Guide
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© National Instruments
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11
Connecting a Split-Rail Power Supply
You can connect a split-rail power supply to the NI 9437. A
split-rail power supply consists of a floating power supply that is
weakly centered around earth ground using bias resistors.
Figure 4.
Connecting a Split-Rail Power Supply
Ground-Fault Protection
When using a floating or split-rail power supply, the NI 9437 can
tolerate a single ground fault from V
SUP
-to-earth ground,
COM-to-earth ground, or DI-to-earth ground. The NI 9437 can
tolerate a single ground fault from V
SUP
-to-earth ground or
COM-to-earth ground because of the isolation of the module. The NI
9437 can tolerate a single ground fault from DI-to-earth ground
NI 94
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