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Chengdu Ebyte Electronic Technology Co., Ltd
Communication channel
4～0, channel（410MHz+CHAN * 1MHz）, default 17H
（433MHz）
OPTIO
5
N
The binary bit of the byte
Configures by user
Meaning
Corresponding hexadecimal
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
7
6
5
reserved
Fixed transmission enabling bit（similar to
7
MODBUS）
0
Transparent transmission mode
1
Fixed transmission mode
6
IO drive mode (default 1)
TXD and AUX push-pull outputs, RXD pull-up
1
inputs
TXD、AUX open-collector outputs, RXD
0
open-collector inputs
5
4
3
wireless wake-up time
0
0
0
250ms（default）
0
0
1
500ms
0
1
0
750ms
0
1
1
1000ms
1
0
0
1250ms
1
0
1
1500ms
1
1
0
1750ms
1
1
1
2000ms
2
FEC switch
0
Turn off FEC
1
Turn on FEC (default)
1
0
Transmission power (approximation)
0
0
33dBm(default)
0
1
30dBm
1
0
27dBm
1
1
24dBm
For example: The meaning of No.3 "SPED" byte:
7
0
UART parity bit
8N1
6
5
4
0
0
1
UART baud rate is 9600
1
E32-433T30D User Manual
Write 0
00H-1FH，410～441MHz
In fixed transmission mode, the first three
bytes of each user's data frame can be used
as high/low address and channel. The
module changes its address and channel
when transmit. And it will revert to original
setting after complete the process.
This bit is used to the module internal
pull-up resistor. It also increases the level's
adaptability in case of open drain. But in
some cases, it may need external pull-up
resistor.
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.
After turn off FEC, the actual data
transmission
rate
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.
Power and current have a non-linear
relationship,
and
the
efficiency is the highest at the maximum
power;
S
The current does not decrease
proportionally as the power decreases.
3
2
1
1
0
1
Air data rate is 2.4k
A
increases
while
power
supply
0
0
15
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