Product Info

LTE Standard Module Series

EC25 Mini PCIe Hardware Design

EC25_Mini_PCIe_Hardware_Design

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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 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 35 s

XTRA enabled 18 s

Warm start

@open sky

Autonomous 26 s

XTRA enabled 2.2 s

Hot start

@open sky

Autonomous 2.5 s

XTRA enabled 1.8 s