National Instruments 1128 用户手册
Glossary
G-2
ni.com
C
C
Celsius
channel
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.
read the analog or digital signal. Signals can be single-ended or differential.
CJS
cold junction sensor
cold-junction
compensation
compensation
a method of compensating for inaccuracies in thermocouple circuits
contact bounce
the intermittent switching that occurs when the movable metal parts of a
relay make or break contact
relay make or break contact
D
DC
direct current
debounced indicates when the contact bounce has ended. See contact bounce.
device
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.
conversion devices. Some examples of devices are computers,
multimeters, multiplexers, oscillators, operator interfaces, and
counters.
digital multimeter
a multifunction meter used to make measurements such as voltage, current,
resistance frequency, temperature, and so on
resistance frequency, temperature, and so on
DMA
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.
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.
DMM See digital multimeter.
drivers/driver software
software that controls a specific hardware device such as a switch card
E
external trigger
a voltage pulse from an external source that triggers an event such as
A/D conversion
A/D conversion