Glossary
VME-MXI-2 User Manual
Glossary-6
© National Instruments Corporation
EMC
Electromechanical Compliance
EMI
Electromagnetic Interference
external controller
In this configuration, a plug-in interface board in a computer is
connected to the VME mainframe via one or more VMEbus
extended controllers. The computer then exerts overall control
over VMEbus system operations.
F
fair requester
A MXIbus master that will not arbitrate for the MXIbus after
releasing it until it detects the bus request signal inactive. This
ensures that all requesting devices will be granted use of the bus.
H
hard reset
Occurs when the mainframe is powered on and when the
VMEbus SYSRESET signal is active. A hard reset restores all
the registers on the VME-MXI-2 to their initial values.
hex
Hexadecimal; the numbering system with base 16, using the
digits 0 to 9 and letters A to F.
Hz
hertz; cycles per second.
I
IACK
Interrupt Acknowledge; a special data transfer generated by the
interrupt handler in response to an interrupt.
IC
Integrated Circuit
IEEE
Institute of Electrical and Electronics Engineers
IEEE-1014
The VME specification.
in.
inches
I/O
input/output; the techniques, media, and devices used to achieve
communication between machines and users.
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