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T
TC
T/H
THD
THD+N
throughput rate
transducer
transfer rate
TRIG
trigger
TTL
U
UI
unipolar
UISOURCE
update
update rate
© National Instruments Corporation
terminal count—the highest value of a counter
track-and-hold—a circuit that tracks an analog voltage and holds the value
on command
total harmonic distortion—the ratio of the total rms signal due to harmonic
distortion to the overall rms signal, in decibel or a percentage
signal-to-THD plus noise—the ratio in decibels of the overall rms signal to
the rms signal of harmonic distortion plus noise introduced
the data, measured in bytes/s, for a given continuous operation, calculated
to include software overhead.
See sensor
the rate, measured in bytes/s, at which data is moved from source to
destination after software initialization and set up operations; the maximum
rate at which the hardware can operate
trigger signal
any event that causes or starts some form of data capture
transistor-transistor logic
update interval
a signal range that is always positive (for example, 0 to +10 V)
update interval counter clock signal
the output equivalent of a scan. One or more analog or digital output
samples. Typically, the number of output samples in an update is equal to
the number of channels in the output group. For example, one pulse from
the update clock produces one update which sends one new sample to every
analog output channel in the group.
the number of output updates per second
G-15
PCI-6023E/6024E/6025E User Manual
Glossary
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