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iCLASS SE Reader Module Hardware Developer Guide, SE3200-902, Rev B.0
October 2012
Page 27 of 42
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6.1.1 Ultra Low Power Mode
To allow for the ULPM, take additional measures at the antenna circuit. A transistor, as well
as two additional measurement lines, is introduced to enable the low power card detection
circuit on the iCLASS SE Reader Module.
Figure 10: Tuning Network with ULPM Support
For Transistor Q1, a ZXM61N02F type or similar is recommended.
Note: Only the HF interface is capable of detecting transponders in ULPM. However, Prox
For Transistor Q1, a ZXM61N02F type or similar is recommended.
Note: Only the HF interface is capable of detecting transponders in ULPM. However, Prox
transponders may be recognized by the HF interface. If supporting Prox credentials in the
ULPM, concentrically rearrange the Prox and HF antenna.