Ebyte E220-900T22S, Руководство пользователя

Страница: 17 / 23

Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T22S User Manual
Copyright ©2012–2020,
Chengdu Ebyte Electronic Technology Co., Ltd.
16
1 0 Transmitting Power The relationship between power and current is
non-linear, and the power supply has the highest
efficiency at maximum power;
The current will not decrease in the same
proportion as the power decreases.
0 0 22dBm
（
default
）
0 1 17dBm
1 0 13dBm
1 1 10dBm
04H
Read/
Write
REG2
Channel Control
（
CH
）
0-80 represents a total of 81 channels
Actual frequency = 850.125 + CH *1M
05H
Read/
Write
REG3
7 Enable RSSI Byte
After being enabled, the module receives wireless
data and outputs it through the serial port TXD,
followed by an RSSI strength byte.
0 Disable
（
Default
）
1 Enable
6 Transmission Method
During fixed transmission, the module will
recognize the first three bytes of serial data as:
address high + address low + channel, and use it
as a wireless transmission target.
0 Transparent transmission mode
（
default
）
1 Fixed transmission mode
5 Reserve
4 LBT Enable
After enabling, monitoring will be conducted
before wireless data transmission, which can
avoid interference to a certain extent, but may
cause data delay;
The maximum stay time of LBT is 2 seconds, and
it will be issued forcibly when it reaches 2
seconds.
0 Disable
（
default
）
1 Enable
3 Reserve
2 1 0 WOR Cycle
Only valid for mode 1;
Cycle T= (1+WOR)*500ms, the maximum is
4000ms, the minimum is 500ms;
The longer the WOR monitoring interval period,
the lower the average power consumption, but the
greater the data delay;
Both sender and receiver must agree (very
important)
0 0 0 500ms
0 0 1 1000ms
0 1 0 1500ms
0 1 1 2000ms
1 0 0 2500ms
1 0 1 3000ms
1 1 0 3500ms
1 1 1 4000ms
06H Write
CRYPT
_H
Key high byte
（
default 0
）
Write only, read returns 0;
Used for encryption to avoid interception of
wireless data in the air by similar modules;
The module will use these two bytes as a
calculation factor to transform and encrypt the air
wireless signal.
07H Write
CRYPT
_L
Key low byte
（
default 0
）
7.3 Factory Default Parameter
Model Factory default parameter
：
c0 00 00 62 00 17
Model No. Frequency Address Channel Air Rate Baud Rate Serial Format Power
E220-900T22S 873.125MHz 0x0000 0x17 2.4kbps 9600 8N1 22dbm