User Manual

PLUS System Manual System Installation 33
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2.4.7.4 Maps
Each Reader group is associated with a map. Multiple groups may be assigned to the same map, but a
group can be assigned to only a single map. All of the Readers on a given map have a common
coordinate system and origin. When a new group is created, it is assigned to Map 0 by default.
Visualizer allows you to import and scale a floorplan image file for each map. The process of
importing image files and setting other map properties is described in Map Configuration below.
2.4.7.5 Group Setup Guidelines
Below are some rules and guidelines for organizing Readers into groups.
Tip: Users of a PLUS demonstration kit with three or four Readers will generally not need
to assign Reader groups. Just leave Readers in the default Group 0 and proceed with
calibration.
 Readers must belong to at least one group. When a new Reader enters the system, it is
automatically assigned to Group 0. If you delete an active Reader from the configuration, it will
be re-assigned to Group 0 the next time data from it is received.
 New Readers that enter the system will be flagged as disabled by default.
 Readers may be assigned to multiple groups. This allows for overlapping 2D location coverage
between adjacent groups of Readers.
 The survey data for a Reader is unique for that Reader. If a Reader is a member of multiple
groups, its survey data will be the same in every group.
 The calibration data for a Reader is a function of each group that the Reader belongs to. For
example, the Reader will be assigned one calibration value for Group 0, a different calibration
value for Group 1, and so on. This allows groups of Readers to be calibrated independently.
 Each Reader has an Enable setting that is a function of each group that the Reader belongs to. A
Reader must be enabled in a given group to contribute to the locating algorithm for that group. A
Reader that is enabled in all groups it belongs to will have a green icon on the map display. A
Reader that is disabled for one or more groups will have a yellow icon on the map display.
 All Readers in a group must be calibrated with respect to one another. More information on
calibration is provided in the System Calibration section.
 To make management of groups easier, keep the number of Readers in a group to no more than
12 or 15.
 To provide 2D Tag location, a group must have at least three Readers.
 In most cases, you should not enable a group for both 1D and 2D tracking at the same time.
Doing so may result in a Tag location that ―jumps‖ if it transitions between a 1D and 2D solution.
 When setting up a 1D Reader group, the Readers should be at approximately the same height.