National Instruments VXI-USB User Manual
Page 56
Glossary
G-8
ni.com
Slot 0 device
A device configured for installation in Slot 0 of a VXIbus mainframe. This
device is unique in the VXIbus system in that it performs the VXI/VMEbus
System Controller functions, including clock sourcing and arbitration for
data transfers across the backplane. Installing such a device into any other
slot can damage the device, the VXIbus backplane, or both.
SMB
Sub Miniature Type B connector that features a snap coupling for fast
connection.
statically configured
device
A device whose logical address cannot be set through software; that is, it is
not dynamically configurable.
SYSFAIL
A VMEbus signal that is used by a device to indicate an internal failure.
A failed device asserts this line. In VXI, a device that fails also clears its
PASSed bit in its Status register.
T
trigger
Either TTL or ECL lines used for intermodule communication.
TTL
Transistor-Transistor Logic
U
USB
Universal Serial Bus—a serial bus for connecting computers to keyboards,
printers, and other peripheral devices.
V
V
volts
VIC
VXI Interactive Control program, a part of the NI-VXI bus interface
software. Used to program VXI devices and develop and debug VXI
application programs.
VISA
Virtual Instrument Software Architecture. This is the general name given
to VISA and its associated architecture.
VISAIC
VISA Interactive Control program, a part of the NI-VISA software.
Used to program devices and develop and debug application programs.
VITA
VMEbus International Trade Association