Gnss Receiver; General Description; Gnss Performance - Quectel EC25 Mini PCIe Hardware Design

4

GNSS Receiver

4.1. General Description

EC25 Mini PCIe includes a fully integrated global navigation satellite system solution that supports
Qualcomm Gen8C Lite (GPS, GLONASS, BeiDou/Compass, Galileo and QZSS). Additionally, it supports
standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface
by default.
By default, EC25 Mini PCIe 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 the GNSS performance of EC25 Mini PCIe.
Table 17: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@open sky
TTFF Warm start
(GNSS) @open sky
Hot start
@open sky
EC25_Mini_PCIe_Hardware_Design
EC25 Mini PCIe Hardware Design
Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
Autonomous
XTRA enabled
LTE Standard Module Series
Typ.
-146
-157
-157
35
18
26
2.2
2.5
1.8
Unit
dBm
dBm
dBm
s
s
s
s
s
s
36 / 79