Chengdu Ebyte Electronic Technology Co,;Ltd
E70-900TxxSx_user manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co,;Ltd
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2048 bytes
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0
Communication Channel
00H~1FH
，
861
～
876.5MHz or 907
～
922.5MHz
Default
：
0EH(868M)
，
The channel interval is
0.5MHz, for example, 861+0.5 x 0EH=868MHz
5
OPTION
7
Fixed transmission (similar to MODBUS
）
When it is 1, the first three bytes of each
user data frame can be used as high/low
address and channel. The module changes
its address and channel when transmitting.
And it will revert to original setting after
the process is completed.
It is transparent transmission under
continuous mode.
0
Transparent transmission mode (Default
）
1
Fixed transmission mode
6
5
4
wireless wake-up time
This parameter is only valid for mode 4, 6.
For mode 6, the wake-up time will affect
the WOR cycle of the module, and affect
the power consumption.
For mode 4, the wake-up time decides the
number
of
wake-up
code
before
transmission so as to ensure the wake up
the module in mode 6.
Generally, mode 4 and 6 shall be used
jointly and the wake-up time on both
modules shall be the same.
0
0
0
500ms
0
0
1
1000ms(Default)
0
1
0
1500ms
0
1
1
2000ms
1
0
0
2500ms
1
0
1
3000ms
1
1
0
3500ms
1
1
1
4000ms
3
FEC switch
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.
0
Turn off FEC
1
Turn on FEC (Default)
）
2
IO drive mode
This bit is used to the 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
TXD and AUX push-pull outputs, RXD pull-up inputs
1
TXD
、
AUX open-collector outputs, RXD open-collector
inputs
1
0
transmission power (approximation)
The external power must ensure that the
ability of current output is more than 80mA
and the power supply ripple is within
100mV.
Low
power
transmission
is
not
recommended due to its low power supply
efficiency.
0
0
30dBm (Default)
0
1
27dBm
1
0
24dBm
1
1
21dBm
