Impinj Inc. IPJR640 User Manual
Speedway Revolution Installation and Operations Guide Octane 4.4
Chapter 3: Configuring and Monitoring
Chapter 3: Configuring and Monitoring
18
Copyright © 2010, Impinj, Inc.
read. The Session value controls how long the flag retains its value
before reverting back to the original tag value. Search Mode controls
which flag values the reader reads and, in some cases, what happens
to the flag value once the tag is read.
With Dual Target, the reader reads all the tags with A flags, after
reading the tags the reader flips each tag to B. When there are no
more A tags to read, the reader reads all the B tags, flipping each one
to A after it has been read. It continues this 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.
before reverting back to the original tag value. Search Mode controls
which flag values the reader reads and, in some cases, what happens
to the flag value once the tag is read.
With Dual Target, the reader reads all the tags with A flags, after
reading the tags the reader flips each tag to B. When there are no
more A tags to read, the reader reads all the B tags, flipping each one
to A after it has been read. It continues this 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.
10. 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 does waste processing time because the reader reads all
enabled ports. The reader verifies the presence of an antenna before
attempting to activate it.
port without a connected antenna. Leaving all ports enabled does no
harm, but does waste processing time because the reader reads all
enabled ports. The reader verifies the presence of an antenna before
attempting to activate it.
11. Set the appropriate transmit power, Tx Power, and receive sensitivity,
Rx Sensitivity, for each enabled antenna.
Transmit power controls the power of the signal leaving the antenna
and the signal range. The optimal setting depends on many things:
and the signal 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
•
anticipated distance 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
tag is ignored by the reader. This parameter is useful in mitigating
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.
tag is ignored by the reader. This parameter is useful in mitigating
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.
Remember, you are simply configuring the reader to test your
installation. Adjust these settings later when you begin using the
reader in a live RFID operation if desired.
installation. Adjust these settings later when you begin using the
reader in a live RFID operation if desired.
12. Select Apply. MultiReader displays a progress bar as it connects to the
reader. When the connection completes, the following status appears at
the bottom of the application:
the bottom of the application:
Figure 3.4 Multireader Status Display