LTE Standard Module Series
EG915U_Series_Hardware_Design 24 / 81
2.6. EVB
In order to help customers develop applications with EG915U series moduel. Quectel provides an
evaluation board (UMTS<E EVB), USB to RS-232 converter cable, earphone, antennas and other
peripherals to control or test the module. For more details, please refer to document [1].
11, 12, 13, 14, 16, 49, 51, 57, 65, 66, 78, 92, 93, 94, 95, 97, 98, 99, 103, 104, 105,
106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 123, 124, 125
1. The functions of PSM and GRFC are under development and it is not recommended to use them
right now, please consult Quectel Technical Support for details.
5. PIN18( MAIN_W_DISABLE)&PIN19( AP_READY)&PIN30( MAIN_DTR)
&PIN38( MAIN_DCD)&PIN39( MAIN_RI) When the module is powered on, there will be a period of time
when the power level is indeterminate. First, high level 3V lasts for 2 seconds, then low power Ping
lasts for 1.2 seconds, and then it is configured as 1.8V input/output. According to specific usage
scenarios and circuit design, please evaluate whether the output stage that is indeterminate when the
power is just turned on meets the customer's application design requirements.
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