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Chengdu Ebyte Electronic Technology Co.,Ltd.
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6.5 Sleep Mode
（
Mode 3
）
Type
M0 = 1
，
M1 = 1
transmit
ting
Unable to transmit wireless data
receivin
g
Unable to receive wireless data
others
When the module is in the ultra-low power consumption state, all other functions of are turned off, and the sleep
mode can only be exited through the state switch of M1M0.
6.6 Fast communication test
Step
Description
1
Connect E49-400T20D module to the E49-TBL backplane, and then plug into the USB test board
(E15-USB-T2), plug into the computer to ensure that the driver has been installed correctly;
Plug in the mode selection jumper cap on the USB test board ( M1 = 0, M0 = 0)
2
Select 3.3V (the module supports 2.6 ~ 3.3V).
3
Run the "Serial Debug Assistant" software and select the correct serial port number and observe the sending
window and the corresponding receiving window
