Quectel UC20

UMTS/HSPA/LTE Module Series
UMTS&LTE EVB User Guide
UMTS&LTE_EVB_User_Guide Confidential / Released 24 / 32
3.7. Status LEDs
UMTS&LTE EVB comprises several status LEDs (D103, D101, D109, D104, D102). Figure 19 shows the
position of LEDs.
Figure 19: Status LEDs
Table 10: Description of Status LEDs
Reference
Used for UMTS&LTE Module
D103
Indicate the power supply for module is ready
Bright: VBAT ON
Extinct: VBAT OFF
D101
Indicate the module operation status
Bright: module is powered on
Extinct: module is powered down
D109
Indicate the sleep status
Bright: module is in sleep mode
Extinct: module is not in sleep mode
D104, D102
Indicate the module network registration mode
The indication varies in different modules. Refer to related Hardware Design for
detailed information
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