National Instruments VXI-USB User Manual
© National Instruments Corporation
G-1
Glossary
Symbol
Prefix
Value
p
pico
10
–12
n
nano
10
–9
µ
micro
10
– 6
m
milli
10
–3
k
kilo
10
3
M
mega
10
6
G
giga
10
9
T
tera
10
12
Symbols
°
degrees
Ω
ohms
A
A
amperes
address
Character code that identifies a specific location (or series of locations) in
memory. In VISA, it identifies a resource.
memory. In VISA, it identifies a resource.
address modifier
One of six signals in the VMEbus specification used by VMEbus masters
to indicate the address space in which a data transfer is to take place.
to indicate the address space in which a data transfer is to take place.
address space
A set of 2
n
memory locations differentiated from other such sets in
VXI/VMEbus systems by six addressing lines known as address modifiers.
n is the number of address lines required to uniquely specify a byte location
in a given space. Valid numbers for n are 16, 24, 32, and 64. In VME/VXI,
because there are six address modifiers, there are 64 possible address
spaces.
n is the number of address lines required to uniquely specify a byte location
in a given space. Valid numbers for n are 16, 24, 32, and 64. In VME/VXI,
because there are six address modifiers, there are 64 possible address
spaces.