Product Info

LTE Standard Module Series

EC21_Series_Mini_PCIe_Hardware_Design

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GNSS

4.1. General Description

EC21 series Mini PCIe includes a fully integrated global navigation satellite system solution that supports

GPS, GLONASS, BeiDou (COMPASS), Galileo and QZSS. Additionally, it supports standard NMEA-

0183 protocol, and outputs NMEA sentences at 1 Hz data update rate via USB interface by default.

By default, EC21 series 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, see document [3].

4.2. GNSS Performance

The following table shows the GNSS performance of EC21 series 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