User Manual

ThingMagic Nano User Guide 3
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Antenna Requirements
The performance of ThingMagic Nano is affected by antenna quality. Antennas that provide good 50 ohm
match at the operating frequency band perform best. Specified sensitivity performance is achieved with
antennas providing 17 dB return loss (VSWR of 1.33) or better across the operating band. Damage to the
module will not occur for any return loss of 1 dB or greater. Damage may occur if antennas are
disconnected during operation or if the module sees an open or short circuit at its antenna port.
Antenna Detection
Digital/Power Interfaces
The edge “via” connections provides power, serial communications signals, an enable control, and access
to the GPIO lines to ThingMagic Nano module.
See Hardware Integration for pinout details of both connections and layout guidelines.
Caution: Like the Micro module, ThingMagic Nano does not support automatic antenna
detection. When writing applications to control ThingMagic Nano, you must
explicitly specify that antenna 1 is to be used. Using the MercuryAPI, this requires
creation of a “SimpleReadPlan” object with the list of antennas set and that object
set as the active /reader/read/plan. For more information see the MercuryAPI
Programmers Guide | Level 2 API | Advanced Reading | ReadPlan section.
ThingMagic Nano Digital Connector Signal Definition
Edge Via Pin # Signal
Signal Direction
(In/Out of
ThingMagic
Nano)
Notes
1-9 GND Signal Return Must connect all GND pins to ground as they
also serve to remove heat from the module.
10 Volt DC Power Output 3.4V DC output. Maximum load 5 mA. Turns
off when ENABLE is pulled low.
Leave unconnected if not used.
11 ENABLE Enable/Shutdown TTL input that turns the module off and
reduces its power consumption to nearly
zero.
Hi=Enable, Low=Shut down module.
If left unconnected, module will stay in
ENABLE state.