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Quectel EG21-G - GNSS Receiver; General Description; GNSS Performance

Quectel EG21-G
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LTE Module Series
EG21-G Hardware Design
EG21-G_Hardware_Design 54 / 100
4 GNSS Receiver
4.1. General Description
EG21-G includes a fully integrated global navigation satellite system solution that supports Gen8C Lite of
Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS ).
EG21-G supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate
via USB interface by default.
By default, EG21-G 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 EG21-G.
Table 23: GNSS Performance
Parameter
Description
Conditions
Typ.
Unit
Sensitivity
(GNSS)
Cold start
Autonomous
-146
dBm
Reacquisition
Autonomous
-156
dBm
Tracking
Autonomous
-147
dBm
TTFF
(GNSS)
Cold start
@open sky
Autonomous
35
s
XTRA enabled
15
s
Warm start
@open sky
Autonomous
28
s
XTRA enabled
3
s
Hot start
Autonomous
2
s

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