Motorola MC50, Руководство пользователя

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Glossary - 9
NVM. Non-Volatile Memory.
O
ODI. See Open Data-Link Interface .
Open Data-Link Interface (ODI). Novell’s driver specification for an interface between network hardware and
higher-level protocols. It supports multiple protocols on a single NIC (Network Interface Controller). It is
capable of understanding and translating any network information or request sent by any other
ODI-compatible protocol into something a NetWare client can understand and process.
Open System Authentication. Open System authentication is a null authentication algorithm.
P
PAN. Personal area network. Using Bluetooth wireless technology, PANs enable devices to communicate
wirelessly. Generally, a wireless PAN consists of a dynamic group of less than 255 devices that
communicate within about a 33-foot range. Only devices within this limited area typically participate in the
network.
Parameter. A variable that can have different values assigned to it.
Percent Decode. The average probability that a single scan of a bar code would result in a successful decode.
In a well-designed bar code scanning system, that probability should approach near 100%.
PING. (Packet Internet Groper) An Internet utility used to determine whether a particular IP address is online. It
is used to test and debug a network by sending out a packet and waiting for a response.
Print Contrast Signal (PCS). Measurement of the contrast (brightness difference) between the bars and
spaces of a symbol. A minimum PCS value is needed for a bar code symbol to be scannable. PCS = (RL -
RD) / RL, where RL is the reflectance factor of the background and RD the reflectance factor of the dark
bars.
Programming Mode. The state in which a scanner is configured for parameter values. See Scanning Mode .
Q
Quiet Zone. A clear space, containing no dark marks, which precedes the start character of a bar code symbol
and follows the stop character.
QWERTY. A standard keyboard commonly used on North American and some European PC keyboards.
“QWERTY” refers to the arrangement of keys on the left side of the third row of keys.