Operation Of Umts&Lte Module; Power On - Quectel UC20 User Manual

Umts<e evb umts/hspa/lte module series

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Operation of UMTS&LTE Module

1. Connect the UMTS&LTE module to the connector J101 on UMTS&LTE EVB, charge with the 5V

power adapter or USB cable and then pull S201 to ON state, then D103 will be light.

2. Press the S302 (PWRKEY) for at least 100ms. The module will be in the power-on mode and D101

(STATUS) will be light.

The follow tables show the module's working state which can be judged by D102 and D104.

Table 12: UMTS&LTE Module Indication of D102 and D104

Reference

State

0.2s On/1.8s OFF

1.8s On/0.2s OFF

D102

NET_STATUS

0.125s On/0.125s OFF

Always ON

D104

NET_MODE

Always OFF

NOTE

The indication of D102 and D104 varies in different modules. Please refer to related Hardware Design for

detailed information.

UMTS&LTE_EVB_User_Guide

Description

Network searching

Idle mode

Data transfer is ongoing with GSM/3G/4G network

Voice calling

Registered to 3G network (UC20)

Registered to 4G network (EC20)

Others

Confidential / Released

UMTS/HSPA/LTE Module Series

UMTS&LTE EVB User Guide

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