Document: 553632
(ICSTT-RM448_EN_P) Issue: 08:
8-9
Chapter 7 Glossary of Terms
U
UU
U
U
UU
U
Rack unit. A unit of measure used to
describe the height of equipment intended
for mounting in a standard rack. Equivalent
to 44.45mm (1-¾ inches).
V
VV
V
validation
validationvalidation
validation
In quality assurance, confirmation that the
product does what the user requires.
verification
verificationverification
verification
In quality assurance, confirmation that the
product conforms to the specifications.
voting system
voting systemvoting system
voting system
A redundant system (m out of n) which
requires at least m of the n channels to be in
agreement before the system can take
action.
W
WW
W
withstand voltage
withstand voltagewithstand voltage
withstand voltage
The maximum voltage level that can be
applied between circuits or components
without causing a breakdown.