USB TC-08 Help
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© 2005 Pico Technology Limited. All rights reserved.
USBTC08044-2
3.6
Glossary
A method of compensating for ambient temperature variations in thermocouple circuits.
Cold junction compensation
The voltage range, relative to the ground of the data logger, within which both inputs of a
differential measurement must lie in order to achieve an accurate measurement.
Dynamic Link Library. Files with this file extension contain a collection of Windows
functions designed to perform a specific class of operations.
The resistance measured between the input terminals of a circuit.
Noise-Free Resolution. The effective number of bits of resolution that can be considered
The maximum input voltage that can be applied without damaging the unit.
Quiet Not a Number. In the context of the USB TC-08, QNaNs are numbers created
artificially to fill in gaps in sampling. These gaps are interruptions caused by lack of
available PC or laptop processor time, normally caused by too many applications being
open simultaneously. QNaNs are defined in the
indeterminate, meaning no two QNaNs have the same value.
header can be used to identify
QNaN float representations, cast to a
first. QNaNs will not cause an error if
arithmetic operations are performed on them - however, the results will remain
A value in bits, related to the number of increments of an analog input signal that can be
detected by a digital measurement system. A high-resolution measurement system
detects smaller signal increments than a low-resolution measurement system.
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