Seven
™
System User’s Guide | 129
SEVEN TRANSMITTER
Dimensions
(Including Sensor Pod)
Length: 1.5 inches (3.8 cm)
Width: 0.9 inches (2.3 cm)
ickness: 0.4 inches (1.0 cm)
Weight (including Seven Sensor Pod) .24 ounces (6.7 grams)
Communication /Date Detection Range 5 ft (1.5 m)
Power Supply Silver Oxide Batteries
Operational Conditions
Temperature: 10°- 42° C (50°- 108° F)
Humidity: Maximum 95 % Relative
Storage Conditions Temperature: 0°- 45° C (32°- 113° F)
Limited Warranty 1 year
Moisture Protection
IPX 5: water resistance to jetting water
IPX 7: temporary submersion to a depth of 3 feet (1
meter) for 30 minutes
Frequency Allocation MICS Band
Transmitter/Receiver Frequency 402.142 MHz (402 - 405 MHz)
Bandwidth 300 kHz
Maximum Output Power 25 uW EIRP
Modulation On-Off Key
Data Rate 8192 bits/Sec
Total Packet 76 bits
Transmit Duty Cycle 9.28 ms every 5 minutes
Average Number of Collisions due to Coexistence
20 DexCom™ Transmitters within 15 feet over a 24 •
hr period (288 transmissions each)
Total of 4 collisions, if collision occurs, no glucose
reading is received.