NI SCXI-1127 User Manual page 86

Glossary
C
C
channel
CJS
cold-junction
compensation
contact bounce
D
DC
debounced
device
digital multimeter
DMA
DMM
drivers/driver software
E
external trigger
SCXI-1127 User Manual
Celsius
pin or wire lead on the multiplexer to which you apply or from which you
read the analog or digital signal. Signals can be single-ended or differential.
cold junction sensor
a method of compensating for inaccuracies in thermocouple circuits
the intermittent switching that occurs when the movable metal parts of a
relay make or break contact
direct current
indicates when the contact bounce has ended. See contact bounce.
a plug-in board, card, or pad that can contain multiple channels and
conversion devices. Some examples of devices are computers,
multimeters, multiplexers, oscillators, operator interfaces, and
counters.
a multifunction meter used to make measurements such as voltage, current,
resistance frequency, temperature, and so on
direct memory access—a method by which data can be transferred to/from
computer memory from/to a device or memory on the bus while the
processor does something else. DMA is the fastest method of transferring
data to/from computer memory.
See digital multimeter.
software that controls a specific hardware device such as a switch card
a voltage pulse from an external source that triggers an event such as
A/D conversion
G-2 © National Instruments Corporation