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Glossary
NI-488.2 User Manual for Windows Glossary-2 © National Instruments Corp.
C
CFE Configuration Enable is the GPIB command which precedes
CFGn and is used to 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 See Controller-In-Charge.
Controller-In-Charge The device that manages the GPIB by sending interface
(CIC) messages to other devices.
CPU Central processing unit.
D
DAV (Data Valid) One of the three GPIB handshake lines. See handshake.
DCL Device Clear is the GPIB command used to reset the device or
internal functions of all devices. See SDC .
Device Clear See DCL.
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
(direct memory access) board and memory 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.