User's Guide

Review Copy 11-6-10
ThingMagic Micro Family User Guide
24
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• Changes not stored in flash, thus changes made are not retained after a power cycle or a restart of the
boot loader.
• Inability to change individual entries after uploading without reloading the entire table.
• Frequencies used in the order of entries in the table.
If necessary, for a region, the hop table can be randomized to create a pseudo-random sequence of
frequencies to use. This is done automatically using the default hop tables provided for each region.
Protocol Support
The Micro has the ability to support many different tag protocols. Using the MercuryAPI ReadPlan classes
the Micro can be configured to single or multi-protocol Read operations. The current protocols supported
are (some may require a license to enable):
• ISO 18000-6C (Gen2)
• IP-X
• ISO 18000-6B
ISO 18000-6C (Gen2)
The Micro supports multiple ISO-18000-6C profiles including the ability to specify the Link Frequency,
encoding schemes, Tari value and modulation scheme. The protocol options are set in the MercuryAPI
Reader Configuration Parameters (/reader/gen2/*). The following table shows the supported combinations:
ISO 18000-6C (Gen 2) Protocol Configuration Options
Backscatter
Link Frequency
(kHz)
Encoding
Tari
(usec)
Modulation
Scheme
Notes
250
Miller (M=8)
12.5
PR-ASK
250
Miller (M=4)
12.5
PR-ASK
250
Miller (M=2)
12.5
PR-ASK
250
FM0
12.5
PR-ASK
250
Miller (M=8)
25
PR-ASK
250
Miller (M=4)
25
PR-ASK
Default
250
Miller (M=2)
25
PR-ASK
250
FM0
25
PR-ASK
250
Miller (M=8)
25
PR-ASK
640
FM0
6.25
PR-ASK
Not supported in PRC Region
NOTE: It is important that the /reader/baudRate is greater than /reader/ gen2/BLF, in equivalent
frequency units. If it is not, then the reader could be reading data faster than the transport can
handle and send, and the reader’s buffer might fill up.