National Instruments Data Acquisition Device E Series - Manual (Page 252)

Glossary
E Series User Manual G-2 ni.com
AI SENSE Analog input sense signal.
AO Analog output.
AO 0 Analog channel 0 output signal.
AO 1 Analog channel 1 output signal.
AO GND Analog output ground signal.
B
bipolar A signal range that includes both positive and negative values
(for example,
−5 to +5 V).
C
channel Physical—a terminal or pin at which you can measure or generate an
analog or digital signal. A single physical channel can include more than
one terminal, as in the case of a differential analog input channel or a digital
port of eight lines. The name used for a counter physical channel is an
exception because that physical channel name is not the name of the
terminal where the counter measures or generates the digital signal.
Virtual—a collection of property settings that can include a name, a
physical channel, input terminal connections, the type of measurement or
generation, and scaling information. You can define NI-DAQmx virtual
channels outside a task (global) or inside a task (local). Configuring virtual
channels is optional in Traditional NI-DAQ (Legacy) and earlier versions,
but is integral to every measurement you take in NI-DAQmx. In Traditional
NI-DAQ (Legacy), you configure virtual channels in MAX. In NI-DAQmx,
you can configure virtual channels either in MAX or in a program, and you
can configure channels as part of a task or separately.
Switch—a switch channel represents any connection point on a switch. It
may be made up of one or more signal wires (commonly one, two, or four),
depending on the switch topology. A virtual channel cannot be created with
a switch channel. Switch channels may be used only in the NI-DAQmx
Switch functions and VIs.
channel rate Reciprocal of the interchannel delay.