Frequency And Channel Numbers; Transmitting Power; Air Data Rate; Current - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

5.3 Frequency and channel numbers

Model No.
E90-DTU(400SL22P
)
Note: In the same area when multiple data transceivers are communicating one to one at the same time , it is
recommended to set the channel spacing between each group of data transceivers at 2MHz or more.

5.4 Transmitting power

Model No.
E90-DTU(400SL22P)
Note: The lower the transmit power, the closer the transmission distance, but the working current won't be declined in
exact proportion , it is recommended to use the maximum transmit power.

5.5 Air data rate

Model
E90-DTU(400SL22P)
Note: The higher the air data rate, the faster the transmission rate, the transmission distance is also closer; when the rate
meets the requirements , the lower air data rate, the better quality.

5.6 Current

Model No.
E90-DTU(400SL22P)
Note: It is recommended to retain more than 50% of the current margin when selecting the power supply, which will help
the data transceiver to work steadily for a long time.

5.7 TX and RX FIFO and sub-packing method

Model No.
E90-DTU(400SL22P
)
Note: 1. When the receiving data is more than a single packet capacity, the beyond part will be automatically assigned to
the second transmission until it is completed;
2. The data transceiver cannot receive data which is more than the buffer capacity;
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Default
Frequency Range
Frequency
Hz
433.125M 410.125～493.125M
22dbm
Default
Default
Levels
bps
2.4k 8
Tx current mA
12V
88
Buffer
1000 bytes
Channel
Interval
Hz Hz
1M
17dbm 13dbm
√
Air data rate (bps)
0.3、1.2、2.4、4.8、9.6、19.2、38.4、62.5k
24V 12V
46 39
Sub-packing method
Can be sub-packed to 32/64/128/240 byte each time
via command
E90-DTU(400SL22P)User Manual
Channel numbers
84，half duplex
10dbm
√ √
bps
Stand-by current mA
24V
22
14