National Instruments NI 9218, Getting Started, Page: 16 / 22

TEDS Support
TEDS Class 1 sensors provide an interface for transferring information from sensors.
The NI 9218 with LEMO, NI 9218 with DSUB, NI 9982L, NI 9982D, NI 9982F support
TEDS Class 1 sensors.
TEDS Class 2 sensors provide an interface for transferring information from TEDS
enabled sensors. The NI 9218 with LEMO, NI 9982L, NI 9983L, NI 9984L, NI 9985L, and
NI 9986L support TEDS Class 2 sensors.
Vsup Daisy Chain Topology
V
sup-
V
sup+
V
sup +
V
sup -
NI 9218 with LEMO
V
sup-
V
sup+
V
sup +
V
sup -
NI 9218 with LEMO
V
sup-
V
sup+
NI 9218 with LEMO
V
sup +
V
sup -
The NI 9218 with LEMO provides four pins on the Vsup connector for daisy chaining.
NI 9218 Connection Guidelines
Make sure that devices you connect to the NI-9218 are compatible with the module
specifications.
Custom Cabling Guidelines
Observe the following guidelines when using the NI 9988 solder cup connector
adapter or the LEMO crimp connector (784162-01) to create custom cables.
■
Use a shielded cable for all signals.
■
Connect the cable shield to earth ground.
■
Use twisted-pair wiring for the AI+/AI- and RS+/RS- signals to achieve
specified EMC performance.
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NI-9218 Getting Started