•
Timing Modes
—The FD-11613 supports the following timing modes:
–
High-resolution optimizes accuracy and noise and rejects power line frequencies.
–
Best 50 Hz rejection optimizes 50 Hz noise rejection.
–
Best 60 Hz rejection optimizes 60 Hz noise rejection.
–
High-speed optimizes sample rate and signal bandwidth.
Refer to the
FieldDAQ Timing Considerations
topic in the
NI-DAQmx Help
for more
information about configuring timing in the NI-DAQmx API.
•
Filter, Differential Amplifier, and ADC
—Each channel simultaneously passes through
a filtered, differential amplifier before being sampled by a 24-bit ADC.
The FieldDAQ device provides overvoltage protection for each channel; refer to the
FD-11613
Specifications
for more information about overvoltage protection.
Thermocouple Connectors
The FD-11613 features eight thermocouple connectors. The following figure shows the pinout
of a thermocouple connector.
Figure 9. FD-11613 Pinout and Open Thermocouple LED
0
TC–
TC+
Table 5. Signal Descriptions
Signal
Description
TC-
Negative thermocouple terminal
TC+
Positive thermocouple terminal
Open Thermocouple LEDs
Each thermocouple connector has an open thermocouple LED.
FD-11613 User Guide
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© National Instruments
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