LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design 57 / 106
4 GNSS Receiver
4.1. General Description
EG91 series module includes a fully integrated global navigation satellite system solution that supports
Gen8C-Lite of Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS).
EG91 series module supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data
update rate via USB interface by default.
By default, EG91 series module GNSS engine is switched off. It has to be switched on via AT command.
For more details about GNSS engine technology and configurations, please refer to document [3].
4.2. GNSS Performance
The following table shows GNSS performance of EG91 series module.
Table 23: GNSS Performance
Parameter Description Conditions Typ. Unit
Sensitivity
(GNSS)
Cold start Autonomous -146 dBm
Reacquisition Autonomous -157 dBm
Tracking Autonomous -157 dBm
TTFF
(GNSS)
Cold start
@open sky
Autonomous 34.6 s
XTRA enabled 11.57 s
Warm start
@open sky
Autonomous 26.09 s
XTRA enabled 3.7 s
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