Impinj Inc. XARRAY User Manual
Speedway Revolution Installation and Operations Guide Octane 4.11
Chapter 3: Configuring and Monitoring
Chapter 3: Configuring and Monitoring
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Revision 4.11 Copyright ©2014, Impinj, Inc.
process back and forth from A to B and back to A. Session 1 ensures a persistence
period that prevents tags from reverting before they have all been read.
period that prevents tags from reverting before they have all been read.
10. The Reader Antenna Port allows you to specify which physical ANT port (2 ports on a
R220, or 4 ports on a R420/R640) on the Speedway Revolution you are modifying.
When the Antenna Hub feature is disabled, each ANT port represents one antenna.
When the Antenna Hub feature is enabled, each ANT port will represent up to 8
distinct antennae. This depends on whether or not an Antenna Hub has been
detected on that port. If no hub is detected, then the port represents a single
antenna.
When the Antenna Hub feature is disabled, each ANT port represents one antenna.
When the Antenna Hub feature is enabled, each ANT port will represent up to 8
distinct antennae. This depends on whether or not an Antenna Hub has been
detected on that port. If no hub is detected, then the port represents a single
antenna.
11. On the right of the screen is a checkbox for each of the Reader‘s antenna ports. By
default, all antennas are enabled. Deselect the checkbox for any port without a
connected antenna. Leaving all ports enabled does no harm, but increases
processing time because the Reader reads all enabled ports. The Reader verifies the
presence of an antenna before attempting to activate it.
connected antenna. Leaving all ports enabled does no harm, but increases
processing time because the Reader reads all enabled ports. The Reader verifies the
presence of an antenna before attempting to activate it.
12. Set the appropriate transmit power, Tx Power, and receive sensitivity, Rx
Sensitivity, for each enabled antenna. See Figure 3.3
Transmit power controls the power of the signal leaving the antenna and the signal
range. The optimal setting depends on many things:
range. The optimal setting depends on many things:
how you are powering the Reader
cable length connecting the antenna to the Reader
number of antennas in the area
distance anticipated between the antenna and the tags
Use the default value of 30 dBm for testing purposes.
Receive sensitivity controls the tag signal threshold below which the Reader ignores
the tag. This parameter mitigates stray reads. Stray tags often have a weaker signal
than the tags to be read. The Max checkbox is selected by default, and tells the
Reader to read all tags, regardless of the tag‘s signal strength. This is known as its
Received Signal Strength Indicator—or RSSI.
the tag. This parameter mitigates stray reads. Stray tags often have a weaker signal
than the tags to be read. The Max checkbox is selected by default, and tells the
Reader to read all tags, regardless of the tag‘s signal strength. This is known as its
Received Signal Strength Indicator—or RSSI.
When configuring a specific receive sensitivity, deselect the Max checkbox, and then
type the value you want for each connected antenna. The maximum sensitivity is -
80.
type the value you want for each connected antenna. The maximum sensitivity is -
80.
Remember, you are configuring the Reader to test your installation. Adjust these
settings later when you begin using the Reader in a live RFID operation if desired.
settings later when you begin using the Reader in a live RFID operation if desired.
13. Select Apply. MultiReader displays a progress bar as it connects to the Reader.
When the connection completes, the following status displays at the bottom of the
application:
application:
Figure 3.4 MultiReader Status Display
14. Test your Reader installation. Place one or more tags in the read-zone of one or
more of the attached antennas. Select START Inventory. Tag reads appear in the
large gray area on the left:
large gray area on the left: