User's Manual

Flexible Read Point Configurations
Connect up to eight antennas (four transmit and four receive) to a single AR400. This decreases the
per-read-point cost. Logically combine antennas to create a single, “wide” read point with a much
greater range than that of a single antenna.
Configuration and Upgrading
The AR400 is easy to reconfigure for an application via the Setup Wizard. The AR400 can also accept
new firmware and configuration under host control.
Tag Management
Ad Hoc Querying
Use ad hoc querying to send a query about tag visibility. The AR400 replies with either “Tag(s) Visible,”
“Not Known” (never seen or imported), or “Not Visible” (previously seen but now missing, with last seen
timestamp).
Tag Filtering
Use tag filtering to apply filters during read operations. A filter can include or exclude a tag based on
the specified bit pattern. The AR400 offers two types of filtering:
• Pre-Processing: The AR400 restricts its ability to read tags as directed by the include or exclude filtering
specification.
• Post Processing: The AR400 reads all tags it sees, and applies its filters before it reports these tags to the host
computer.
Tag List
Use the tag list feature to send information about tags from the host to the reader. The host can purge
the tag list to remove this information from the reader when it’s not needed.
Event Management
Event Notification
Use event notification to receive notification about certain events. For example, receive immediate
notification of a tag visibility change, or bundle all notifications and receive them later.
Exception Notification and Heart Beat Notification
The AR400 supports sending exception notifications via Simple Network Management Protocol
(SNMP). The "heart beat" notification feature sends periodic messages that indicate whether or not the
reader is functional.