Version 0.8 21/10/2004 Page 42 of 44
Omnidirectional
Capability of a tag to operate in any orientation.
Open Systems
Application in which reader/writers do not have access to a common data base.
Orientation
Alignment of the tag with respect to the scanner, measured in pitch, roll, and yaw.
Orientation Sensitivity
The degree range is decreased by non-optimal orientation.
Passive Tags
Passive tags contain no internal power source. They are externally powered and typically
derive their power from the carrier signal radiated from the scanner.
Port Concentrator
A device that accepts the output from a number of communications interfaces and
introduces them into a communication network.
Power Levels
Levels of power radiated from a scanner or tag, usually measured in volts/meter.
Programming
Adding or altering in a tag.
Programmability
In order to be identifiers of specific objects, tags must at some point have their identity
and/or other data entered into them. This capability is called programmability.
Programmer
Some tags which can have their contents changed by a set of electronics in close
proximity or in electrical contact with it. Those electronics and their packaging are called a
programmer.
Projected Life
This is defined in terms of number of read and/or write cycles, or in active tags this may
include shelf life.
Proximity sensor
A device that detects and signals the presence of a selected object at or near the sensor's
location.
RF/DC
To Next Page
Loading...
