User's Manual

G4-Global System User’s Guide | 147
PARAMETER PERFORMANCE CHARACTERISTICS
Frequency Allocation 2.4 GHz ISM Band
TX/RX Frequencies
2.424 999 877 GHz
2.449 993 677 GHz
2.474 737 539 GHz
2.477 236 919 GHz
Bandwidth 270.833 kHz
Maximum Output Power 1.25 mW EIRP
Modulation Minimum Shift Key
Data Rate 49.987 Kbits/Sec
Total Packet 224 bits
Transmit Duty Cycle
4.48 ms every 5 minutes at each of the
four TX frequencies.
Data Detection Range 20 ft (6m)
Average Number of Collisions due to
Coexistence. 20 DexCom Transmitters
within 20 feet over a 24 hr period (288
transmissions each)
Total of 2 collisions, if collision occurs, no
glucose value is received