TeleType GPS Mini-Bluetooth GPS Receiver
5
© 2004 TeleType GPS
·
GPRMC (1 time per second)
3) Datum: WGS84
Input/ Output Interface:
·
Compatible Bluetooth Serial Port Profile (SPP): v1.1 and class 2 (maximum 10
meter range)
External Antenna Interface:
·
3.0V input MCX-type active antenna connector
4.7
Physical Specification
Physical Specification:
·
Size: 72 mm x 55 mm x 21 mm
·
Weight: < 75 grams (2.7 ounces)
·
Operating Temperature: -10
°
C to + 60
°
C (14
°
F to +140
°
F)
·
Storage Temperature: -20
°
C to + 85
°
C (-4
°
F to +185
°
F)
·
Operating humidity: 5% to 95%; No condensing
4.8
Other Functions
Other Functions:
·
Bluetooth frequency: 2.4 ~ 2.48 GHz
·
Bluetooth Input Sensitivity: -80 dbm
·
Low sensitivity of receiving satellite signal: -175 dBW
·
LED Functions: Indicate Bluetooth status, GPS status, Battery Status and Battery
charging status
5
GPS Signal Reception
The TeleType GPS Bluetooth GPS receiver offers high position accuracy and fast Time-To-First-Fix
(TTFF). These rely on environmental factors, such as where the receiver is located and the initial state
of the receiver. While attempting a position fix, the receiver needs to be locked-on to at least four
satellites. The TeleType GPS Bluetooth GPS Receiver then uses the signals received from the
satellites, along with data from the receiver's digital memory about the last position fix, in order to
compute the current location of the device.
Environmental factors that influence position accuracy and initial GPS position fix are:
·
Tall buildings
·
Narrow street and passageway
·
Protection film on glass
·
Heavy foliage
·
Large cliffs
·
Other obstructions where the satellite signals may blocked
