Quantum P7000 Guía de usuario descargar pdf (Pagina 158)

Glossary

138 Quantum P4000 and P7000 Libraries User’s Guide

Check Condition status

Blocks of data are stored on the tape medium

along with additional information that the library controller uses to

manage storage and retrieval. The format of the additional information is

unique and is hidden from the initiator during normal read or write

operations. This additional information is often used to identify the

physical location of the 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

interpretation of results are addressed.

Class A digital device Class A equipment is intended for Commercial

installation.

Class I laser product Class 1 lasers are products where the power 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 Class 2 lasers are limited to a maximum 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.

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Quantum P7000 Guía de usuario Pagina 158