Chengdu Ebyte Electronic Technology Co,;Ltd
E30-490T20D user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd
17
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.
9.2 Module is easy to damage
Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.
Please check the stability of power source, the voltage cannot fluctuate too much.
Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic
susceptibility.
Please ensure the humidity is within limited range, some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
9.3 BER(Bit Error Rate) is high
There is co-channel signal interference nearby, please be away from interference sources or modify frequency and
channel to avoid interference;
Poor power supply may cause messy code. Make sure that the power supply is reliable.
The extension line and feeder quality are poor or too long, so the bit error rate is high;
10 Production guidance
This type is full-sized module, when the welder welds the module, he must be welding according to the anti-static
regulation. This product is allergic to static, randomly welding the module will have the chance of damaging it
permanently.
11.E30 series
Model No.
Core IC
Frequency
Hz
Tx
power
dBm
Distance
km
Air Data
Rate
Package
Size
mm
Interface
SI4438
433M
20
2.5
1k~25k
SMD
16 * 26
IPEX/External
SI4463
780M
20
2.5
1k~25k
SMD
17 * 30
IPEX/External/Spring
SI4463
868M
20
2.5
1k~25k
DIP
21 * 36
SMA-K
SI4463
868M
20
2.5
1k~25k
SMD
17 * 30
IPEX/External/Spring
