Design Guide

Protocol Support
A DIVISION OF TRIMBLE
76 Functionality of the ThingMagic Nano
Protocol Support
Unlike the M6e and Micro modules, the ThingMagic Nano does not have the ability to
support tag protocols other then EPCglobal Gen2 (ISO 18000-6C). Future support for
newer versions of the Gen2 protocol, such as ISO 18000-63 (Gen2V2), are possible.
Gen2 (ISO 18000-6C) Protocol
Gen2 Protocol Configuration Options
The ThingMagic Nano supports limited ISO-18000-6C profiles, with only the Backscatter
Link Frequency (BLF) and “M” value as configurable options. The protocol options are set
in the MercuryAPI Reader Configuration Parameters (/reader/gen2/*). The following table
shows the supported combinations:
Note
When continuously reading, it is important that the data transfer rate from
the host to the module is faster than the rate at which tag information is
being collected by the module. This is assured if the reader/baudRate
setting is greater than the BLF divided by the “M” value. If itʼs not, then the
reader could be reading data faster than the host can off-load it, and the
readerʼs buffer might fill up.
Backscatter
Link Frequency
(kHz)
Encoding
Tari
(usec)
Modulation
Scheme
Notes
250 Miller (M=8) 25 PR-ASK Up to 85 tags per sec-
ond read rate
250 Miller (M=4) 25 PR-ASK Default; Up to 170 tags
per second read rate.
250 Miller (M=2) 25 PR-ASK Up to 240 tags per
second read rate.