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Glossary
PPC
(Parallel Poll Configure) used to configure an addressed Listener to
PPD
(Parallel Poll Disable)
PPE
(Parallel Poll Enable)
PPU
(Parallel Poll
Unconfigure)
Programmed I/O
R
RAM
REN (Remote Enable)
RQS
S
s
SDC
NI-488.2M SRM for OS/2
Parallel Poll Configure is the GPIB command
participate in polls.
Parallel Poll Disable is the GPIB command used
to disable a configured device from participating
in polls. There are 16 PPD commands.
Parallel Poll Enable is the GPIB command used
to enable a configured device to participate in
polls and to assign a DIO response line. There
are 16 PPE commands.
Parallel Poll Unconfigure is the GPIB command
used to disable any device from participating in
polls.
Low-speed data transfer between the GPIB board
and memory in which the CPU moves each data
byte according to program instructions. See
DMA.
random-access memory
A GPIB line controlled by the System Controller
but used by the CIC to place devices in remote
program mode.
Request Service
seconds
Selected Device Clear is the GPIB command
used to reset internal or device functions of an
addressed Listener. See DCL and IFC.
G-8
© National Instruments Corp.
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