UMTS/HSPA Module Series
UC20 EVB User Guide
UC20_EVB_User_Guide Confidential / Released 26 / 30
4
Operation of UMTS Module
4.1. Power On
4.1.1. Power On UC20-TE-A
1. Connect the UC20-TE-A module to the connector J101 on UC20 EVB, charge in the 5V power
adapter and pull S201 to ON state, then D103 will be light.
2. Press the S202 (PWRKEY) for at least 100ms. D101
(STATUS) will be light and the module will be in
the power-on mode.
The following
table shows the module’s working state which can be judged by D102 and D104.
Table 12: Indication of D102 and D104
4.1.2. Power On UC20 Mini PCIe
1. Connect the UC20 Mini PCIe module to the connector J801 on UC20 EVB, charge in the 5V power
adapter, the module will be in the power-on mode.
2. Pull S201 to ON state, D103 will be light and indicates power supply for EVB is ready. D101
(STATUS)
will be light which indicates the network registration mode.
Reference
State
Description
D102
NET_STATUS
0.2s On/ 1.8s OFF
Networks searching.
1.8s On/ 0.2s OFF
Idle mode.
0.125s On/ 0.125s OFF
Data transfer is ongoing with GSM/3G network.
Always ON
Voice Calling.
D104
NET_MODE
Always ON
Registered to 3G network.
Always OFF
Others.
Quectel
Condidential
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