Chengdu Ebyte Electronic Technology Co,;Ltd
E62-433T20D user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
13
4
CHAN
Communication
frequency
(425M+CHAN*0.5M)
default 0AH
00H- 33H
，
for 425 – 450.5MHz
When the frequency-hopping quantity
sets as 1, the module works only at the
fixed frequency (425M + CHAN *
0.5M). Otherwise the module works at
a
band
(CHAN*0.5MHz+FHSS_nu
ms*0.5MHz).
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
：
20dBm
（
Default
）
01
：
17dBm
10
：
13dBm
11
：
10dBm
-----------------------------------------------
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
300mA and ensure the power supply
ripple within 100mV.
Low power transmission is not
recommended due to its low power
supply efficiency.
