Ebyte E32 Series, User Manual

Page: 21 / 24

SX1278 Wireless Module E32 Series User Manual
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 21 / 24
------------------------------------------------------
5，4，3 wireless wake-up time（for the receiver,
it means the monitor interval time ,while for the
transmitter it means continuously sending
preamble code time.）
000：250ms（default）
001：500ms
010：750ms
011：1000ms
100：1250ms
101：1500ms
110：1750ms
111：2000ms
----------------------------------------------------
2， FEC switch
0：Turn off FEC
1：Turn on FEC（Default）
------------------------------------------------------
1, 0 transmission power (approximation)
00： 30dBm（Default）
01： 27dBm
10： 24dBm
11： 21dBm
------------------------------------------------------------

The transmit & receive module work in mode 0,
whose delay time is invalid & can be arbitrary
value.

The transmitter works in mode 1 can transmit the
preamble code of the corresponding time
continuously.

When the receiver works in mode 2, the time
means the monitor interval time (wireless
wake-up). Only the data from transmitter that
works in mode 1 can be received.

The wake-up time set by transmitter cannot be less
than the monitor interval time of receiver;
otherwise, it may lead to data loss. In case of
two-way communication, both parties should keep
the wake-up time the same.

The longer the wake-up time, the lower the
average receive current consumption.
-------------------------------------------------------------

After turn off FEC, the actual data transmission rate
increases while anti-interference ability decreases.
Also the transmission distance is relatively short.

Both communication parties must keep on the
same pages about turn-on or turn-off FEC.
-------------------------------------------------------------

The external power must make sure the ability of
current output more than 1.5A and ensure the
power supply ripple within 100mV.

Low power transmission is not recommended due
to its low power supply efficiency.
For example: The meaning of No.3 "SPED" byte ：
The binary bit of the byte 7 6 5 4 3 2 1 0
Configures by user 0 0 0 1 1 0 1 0
Meaning UART parity bit 8N1 UART baud rate is 9600 Air data rate is 2.4k
Corresponding hexadecimal 1 A