Glossary
NI-488.2M UM for Windows NT
Glossary-2
© National Instruments Corp.
C
CFE
The GPIB command which precedes CFGn and is used to
(Configuration Enable)
place devices into their configuration mode.
CFGn
These GPIB commands (CFG1 through CFG15) follow CFE
and are used to configure all devices for the number of meters
of cable in the system so that HS488 transfers occur without
errors.
CIC
The device that manages the GPIB by sending interface
(Controller-In-Charge)
messages to other devices.
CPU
Central processing unit.
D
DAV (Data Valid)
One of the three GPIB handshake lines. See handshake .
DCL
The GPIB command used to reset the device or internal
(Device Clear)
functions of all devices. See SDC .
device-level function
A function that combines several rudimentary board
operations into one function so that the user does not have to
be concerned with bus management or other GPIB protocol
matters.
DIO1 through DIO8
The GPIB lines that are used to transmit command or data
bytes from one device to another.
DLL
Dynamic link library.
DMA
High-speed data transfer between the GPIB board and
memory
(direct memory access)
that is not handled directly by the CPU. Not available on
some systems. See programmed I/O.
driver
Device driver software installed within the operating system.
E
END or END Message
A message that signals the end of a data string. END is sent
by asserting the GPIB End or Identify (EOI) line with the last
data byte.
