Chengdu Ebyte Electronic Technology Co,;Ltd E62-433T30D user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd 14
5
OPTIO
N
7, 0 is recommended.
-----------------------------------------
6 IO drive mode (default 1)
1
：
TXD and AUX push-pull outputs,
RXD pull-up inputs
0
：
TXD
、
AUX open-collector outputs,
RXD open-collector inputs
----------------------------------------
5, 4, 3, 0 is recommended.
-----------------------------------------
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
-----------------------------------------------
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.
-----------------------------------------------
0 is recommended.
-----------------------------------------------
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 1A 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
The specific value
(user configures)
0
0
0
1
1
0
1
0
Meaning
UART parity bit
8N1
UART baud rate is 9600
Air data rate is 64k
Corresponding hexadecimal
1
A
8. Hardware design
It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and
