User guide

WA_DEV_FEX20_UGD_002 Rev 004 March 08, 2011 68
Fastrack Xtend User Guide
Expansion Card
7.4.2.8. GPS RF Performance
The GPS RF performance for receiver is given in the table below.
Table 56. 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
30 s
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
7.4.3. RS485 + Isolated Digital Inputs
The basic features of the RS485 Expansion Card are summarized in the table below.
Table 57. Basic Features of the RS485 Expansion Card
Features
Description
Sierra Wireless
Software Suite
Sierra Wireless Software Suite programmable:
 Native execution of embedded standard ANSI C applications
 Custom AT command creation
 Custom application library creation
 Standalone operation
Fastrack Xtend
Interfaces
 AT command set based on V.25 or later and GSM 07.05 & 07.07
 Interface for embedded application
RS485
Communication
Interface
 Surge protection
 No external isolated voltage supply
 UART supportable
 Half-duplex
 300 to 115200bps Baud rate when integrating with the Fastrack Xtend
4 Isolated Digital
Inputs
 Surge protection
 3 to 12V continuous D.C. input
 3 to 32V pulse input
 5300V
RMS
isolation for 1s (typical)
 50µs digital input processed by interrupt input (typical)
 25µs max. turn-on time by10Hz pulse input
 60µs max. turn-off time by 10Hz pulse input