Notes; Faq; Communication Range Is Too Short - Ebyte E70-915NW30S User Manual

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10. Notes

1. In the sleep mode, the serial baud rate format is 115200, 8N1. If users forget the current baud rate, they can use AT
command to reconfigure in this mode.
2. After the node is associated with the coordinator, the node's information will be saved, and the information still exists
after the node is disconnected from the network. This mechanism has two advantages:
A. When the same node joins the network established by the coordinator, increase the network access speed;
B. After a node enters the network, as long as the current network exists, the short address will never change;
If the coordinator has associated more than 200 devices and wants to continue to associate new devices, it needs to call
the AT + CLINFO command to clear the current network information
3. The average power consumption of a low-power node depends on the wake-up period configured by the user. The
larger the period, the lower the power consumption.
4. Low power consumption nodes cannot receive broadcast data from the coordinator.
5. When using the default parameters, if the node is powered on for more than 60 seconds and has not yet entered the
network, the system reset will be initiated.
6. When the node PANID is set to 0Xffff (65535), the node can join any network, otherwise it will only join the network
with the same PANID.
7. E70 (915NW30S) configure parameters AT + TMCFG = 0 and AT + TMCFG = 1, their modes are long-distance
mode.
8. When using AT + TFICFG = value to set the input transmission format configuration and AT + TFOCFG = value to
set the output transmission format configuration, parameters can be saved without restarting.

11 FAQ

11.1 Communication range is too short

The communication distance will be affected when obstacle exists.

Data lose rate will be affected by temperature, humidity and co-channel interference.

The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.

Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.

The signal will be affected when the antenna is near metal object or put in a metal case.

Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the

distance).
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the

transmitting power.
Due to antenna quality or poor matching between antenna and module.

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