Connecting TEDS Sensors
You can connect TEDS (Transducer Electronic Data Sheets) sensors to the FieldDAQ device
through the T+ and T- pins on each connector.
Figure 15. Connecting TEDS Sensors to the FieldDAQ Device
TEDS
Data
Return
GND/T-
T+
3
5
Filtering
You can configure a filter for each bank on the FieldDAQ device.
1
FieldDAQ supports three
types of lowpass filtering:
•
Brickwall (default)
•
Butterworth
•
Comb
Table 7. Comparing FieldDAQ Filters
Attribute
Brickwall (Default)
Butterworth
Comb
Passband
Tracks sample rate
Configurable independent
of sample rate
Tracks sample rate
Alias Protection
Best—Full
protection
Better—Configurable
protection level
Good—Partial
protection
Latency
High
Medium to high
(configuration-dependent)
Low
Input Delay
Variation versus
Frequency
Constant input delay Variable input delay
Constant input delay
Flatness
Best
Best
Good
1
Configurable filtering is supported in NI-DAQmx 18.6 and later. Previous versions of NI-DAQmx
support only brickwall filtering.
FD-11601 User Guide
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© National Instruments
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