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Global Positioning System (GPS)
This information applies only to the SocketModem models with the GPS option.
Technical Specifications
Category
Receiver Type
Accuracy
Open Sky TTFF
Sensitivity Tracking -161dBm
Update Rate
Dynamics
Operational Limits
Datum
Interface
Protocol
Features
Tests 8 million time-frequency hypothesis per sec
Open sky cold start 29 second
Signal detection better than –161dBm
Reacquisition sensitivity –155dBm
Accuracy 2.5m CEP
Multipath detection and suppression
Supports active or passive antenna
Underwriters Laboratories Required Global Positioning System (GPS) Statement
Note the following information required by Underwriters Laboratories:
Underwriters Laboratories, Inc. ("UL") has not tested the performance or reliability of the Global Positioning
System ("GPS") hardware, operating software or other aspects of this product. UL has only tested for fire, shock or
casualties as outlined in UL's Standard(s) for Safety.UL60950-1 Certification does not cover the performance or
reliability of the GPS hardware and GPS operating software. UL MAKES NO REPRESENTATIONS, WARRANTIES OR
CERTIFICATIONS WHATSOEVER REGARDING THE PERFORMANCE OR RELIABILITY OF ANY GPS RELATED FUNCTIONS
OF THIS PRODUCT.
Universal Socket Developer Guide
Description
L1 Frequency
GPS C/A code
SBAS Capable
51 Channel Acquisitions
14 Channel Tracking
Position 2.5m CEP
Velocity 0.1m/sec
Timing 300ns
Hot start 1 second
Cold start 29 seconds average
Reacquisition < 1s
1Hz standard
4G
Altitude < 18,000m or Velocity < 515m/s
Default WGS-84
UART
NMEA-0183 V3.01, GGA, GLL, GSA, GSV, RMC, VTG
CHAPTER 8 – ANTENNAS, CABLES, AND GPS
60
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