Quantum P2000 Series User Manual page 134

Glossary
114
blocks of data and the address of the logical block, and to provide
protection against the loss of the user data.
The address of the first logical block is zero. The address of the last
logical block is [n-1], where [n] is the number of logical blocks
available on the medium. A Read Capacity command may be
issued to determine the value of [n-1]. If a command is issued that
requests access to a logical block not within the capacity of the
medium, the command is terminated with CHECK CONDITION.
CISPR 22 This standard describes the emissions testing methods and
test limits for information technology equipment, such as computers,
office machines, or telecommunications equipment connected to low -
voltage power main networks (<600V). It does not apply to equipment
whose primary function is radio transmission or reception as defined by
the International Telecommunications Union (ITU) Radio Regulations.
The object of the standard is to establish uniform requirements for the
conducted and radiated disturbance levels of the equipment covered by
the standard. Disturbance limits are established for Class A and Class B
equipment, and measurement methods, operating conditions, and
intepretation of results are addressed.
Class A digital device
installation.
Class I laser product
of the laser beam produced (the accessible emission) is always
below the Maximum Permissible Exposure value. Therefore, for
Class 1 lasers the output power is below the level at which it is
believed eye damage will occur. Exposure to the beam of a Class 1
laser will not result in eye injury. Class 1 lasers may therefore be
considered eye safe.
Class II laser product
output power of 1 mW. A person receiving an eye exposure from a
Class 2 laser, either accidentally or as a result of someone else's
deliberate action (misuse) will be protected from injury by their
natural blink reflex. This is a natural involuntary response which
causes the individual to blink and avert their head thereby
terminating the eye exposure.
ATL P2000 Series Automated Tape Library User's Guide
Class A equipment is intended for Commercial
Class 1 lasers are products where the power
Class 2 lasers are limited to a maximum