User's Manual

Atlas PT Technical Manual
9
3.6 GPS and Transponder
Number of channels ....................................................................................................................................... 12
Horizontal accuracy (24 hour static) ............................................................................... <2.5m 50%, <5m 90%
Acquisition (-130dBm, 50%) ........................................................................ <40sec cold start, <15sec hot start
Sensitivity .............................................................................. Tracking -150dBm, Acquisition -142dBm
NMEA Output sentences .................................................................................. WPL, TLL, GLL, GSV, PRAVE
Position report rate, programmable ...................................................................................... 1 to 9999 seconds
Position report resolution .......................................................................................................... 0.0001 degrees
Voltage report resolution/accuracy ..................................................................................................... 0.1V/10%
Temperature resolution and accuracy (enclosure temperature) ................................. 2 degrees C/4 degrees C
Velocity resolution and accuracy ......................................................................................... 1km / 1km per hour
4. Electrical Inputs and Outputs
The top of the ATLAS PT modem has these features:
RF connector for UHF/VHF antenna
Power Button/LED
Alert Button/LED
Status LED (Receive data = green, TX = red)
Sealed GPS Antenna