Specifications

FL-MDS-CAB.2
MOD-MDS.1 ***Confidential*** 19 of 28
Figure 8. Sequence diagram of AA activation and tag read
7.7.2 Calibration and continuous reading on antenna A
Two RPDO1 are needed: one to deactivate the antennas, one to start calibration and continuous reading.
A carrier must be positioned centered above the antenna, otherwise the calibration will fail, finding a wrong
sampling time value, and possibly making the tag decoding impossible without a new, correct calibration.
1. RPDO1 [0x00 0x11 0x00 0x00 0x00 0x00 0x00 0x00] is received (deactivate both antennas);
a. TPDO3 [0x00 0x11 0x00 0x00 0x00 0x00 0x00 0x00] is sent;
2. RPDO1 [0x00 0x11 0x00 0x00 0x00 0x00 0x00 0x00] is received (calibrate AA)
3. the tag reader is configured and antenna A is connected,
a. TPDO3 [0x00 0x10 0x00 0x00 0x00 0x00 0x00 0x00] is sent (AA is changing state);
4. CAB executes the sampling time calibration procedure. When the calibration is complete
HTRC110 is configured with the best sampling time value, then Antenna is activated and
TPDO3 [0x00 0x12 0x00 0x00 0x00 0x00 0x00 0x00] is sent (AB active);