Ebyte E43-900T13S3, User Manual

Page: 17 / 26

Chengdu Ebyte Electronic Technology Co., Ltd. E43-900T13S3 User manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co., Ltd.
16
-------------------------------------------------
5
，
4
，
3 TTL serial port rate
（
bps
）
000
：
serial port baud rate is 1200
001
：
serial port baud rate is 2400
010
：
serial port baud rate is 4800
011
：
serial port baud rate is 9600
（
default
）
100
：
serial port baud rate is 19200
101
：
serial port baud rate is 38400
110
：
serial port baud rate is 57600
111
：
serial port baud rate is 115200
-------------------------------------------------
2
，
reserved bit
，
It’s recommend to write 0
-------------------------------------------------
1
，
0 Wireless air data rate
（
bps
）
00
：
air data rate is 1.2k
（
default
）
01
：
air data rate is 4.8k
10
：
air data rate is 9.6k
between communication parties

The UART baud rate has nothing
to do with wireless transmission
parameters & won’t affect the
wireless transmit / receive
features.
-----------------------------------
-----------------------------------

The lower the air data rate, the
farther the distance, the stronger
the anti-interference performance
and the longer the transmission
time.

The wireless transmission rate of
both sides must be same.
4 CHAN
5
，
4
，
3
，
2
，
1
，
0 Communication channel
Communication frequency
（
CHAN * 0.3M
）
Default 2EH:868.8MHz

00H-FFH
，

Correspondnig to 855.0 ~
931.5MHz
5 OPTION
7
，
Fixed transmission enable bit
（
similar to
MODBUS
）
0
：
Transparent transmission mode
（
default
）
1
：
Fixed transmission mode
-------------------------------------------------
6
，
5
，
4
，
3
，
2 reserved bit
，
It’s recommend to write
0
-------------------------------------------------
1, 0 transmitting power
（
Approximate value
）
00
：
13dBm
（
default
）
01
：
10dBm
10
：
7dBm
11
：
3dBm

When It’s 1, the first 3 bytes of
each user data frame as the
channel, high and low addresses.
Change its own address and
channel when transmitting, and
restore the original settings after
completion.
-----------------------------------
-----------------------------------

The external power supply must
provide more than 100mA current
output capability. And ensure that
the power supply ripple is less
than 100mV.

It is not recommended to use a
smaller power transmission, and
its power utilization efficiency is
not high.
For example: The meaning of No.3 "SPED" byte ：
The binary bit of the
byte
7 6 5 4 3 2 1 0
The specific value
(user configures)
0 0 0 1 1 0 0 0
Meaning reserved bit UART baud rate is 9600 Air data rate is 1.2k
Corresponding
hexadecimal
1 8