Table of Contents
Advertisement
Chengdu Ebyte Electronic Technology Co.,Ltd.
5
OPTION
The binary digit of the byte
Specific value（Users configure）
M eaning
Corresponding hexadecimal
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
4-0：（425M + CHAN * 0.1M ), default 50H（433M ）
Fixed point send enable bit（similar to M ODBUS）
7
0
Transparent transmission mode
1
Fixed point transmission mode
IO drive mode（default 1）
6
TXD、AUX push-pull output，RXD pull up input
1
open-drain
TXD、AUX
0
5
4
3
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
2
0
Turn off FEC
Open FEC（default）
1
1
0
Transmitting power (Approximate value)
0
0
0
1
1
0
1
1
For example（The meaning of the No. 3 "SPED" byte）：
7
0
Serial parity bit
8N1
outputs，RXD
open-drain
inputs
Wireless wakeup time
250ms（default）
500ms
750ms
1000ms
1250ms
1500ms
1750ms
2000ms
FEC switch
30dBm（default）
27dBm
24dBm
21dBm
6
5
4
0
0
1
Serial port baud rate 9600
1
E31-433T30D User Manual
When value is 1, the first 3 bytes of each
user data frame are used as the high and
low addresses and channels. When
transmitting, the module changes its own
address and channel, and when it is
finished, it restores the original settings.
This bit is used to enable the internal
pull-up resistor of the module. Open-
drain mode is more adaptable, and in
some cases an external pull-up resistor
may be required.
Both transmitter and receiver module
work in mode 0. The delay time is invalid
and can be any value.
The transmitter works in mode 1, and
will continue to transmit the call code for
the corresponding time.
The receiver works in mode 2, which
refers to the receiver's listening interval
(wireless wake-up) and can only receive
data from the module working in mode 1.
After the FEC is turned off, the actual
data transmission rate is increased, but
the anti-interference ability is weakened
and the distance is slightly closer. Please
choose according to the actual
application.
Both sides of
the communication must be turned on or
off.
The external power supply must provide
more than 1.5A current output capability.
And ensure that the power supply ripple
is less than 100mV.
It is not recommended to use smaller
power transmission because of its low
power utilization efficiency.
3
2
1
1
0
1
Air data rate 2.4k
A
0
0
14
Advertisement
Table of Contents
