WA_DEV_FEX20_UGD_002
Rev 002
April 26, 2010
69
Fastrack Xtend User Guide
Expansion Card
7.4.2.6.
GPS Receiver Frequency
Table 48: GPS Receiver Frequency
Characteristic
GPS
Frequency RX
1575.42 MHz
7.4.2.7.
External Antenna
The external antenna is connected to the Expansion Card
‟s
GPS via the MMCX connector.
The external antenna must fulfill the characteristics listed in the table below.
Table 49: External Antenna Characteristics
Antenna Frequency Range
1.57542GHz ± 1.023MHz (L1-Band)
Impedance
50
nominal
Voltage Supply
3.3V ± 0.5VDC
Gain (a cable)
2dBi
7.4.2.8.
GPS RF Performance
The GPS RF performance for receiver is given in the table below.
Table 50: Receiver Performances
SDK 4.11
Conditions
Notes
Value
Remarks
Accuracy
-130 dBm (outdoor) In
dynamic mode
50% percentile
3.7 m CEP
-130 dBm (outdoor) In
dynamic mode
95% percentile
6.8 m CEP
-140 dBm In dynamic mode
50% percentile
6.1 m CEP
-145 dBm In dynamic mode
50% percentile
13.9 m CEP
Velocity
Accuracy
Static mode
First fix only
0.1 m/s
Typ
Static mode
Continuous fixes
0 m/s
Typ
TTFF Hot
Start
-
Mean
3.5 s
Typ
TTFF Warm
Start
-
Mean
30s
Typ
TTFF Cold
Start
Clear Sky conditions
Mean
38 s
Typ
Clear Sky conditions
95% percentile
45 s
Typ
Update Rate
-130 dBm
Continuous fixes
1 Hz
Typ
