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.
D
DC
direct current
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.
digital multimeter
a multifunction meter used to make measurements such as voltage, current,
resistance frequency, temperature, and so on
DMM
See
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
H
handshaking
the use of two trigger lines between two instruments, such as a switch and
a DMM, to synchronize their actions
HVAB
high-voltage analog bus
Hz
hertz—the number of scans read or updates written per second
