SX1276 Wireless Module User Manual of E32(915T30S)
Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 4 / 14
1.
Features
LoRa:
LoRa spread-spectrum means the transmitting distance is much longer than before. Confidentiality is high and the
possibility of being intercepted is extremely low. LoRa features strong ability of anti-interference, strong inhibitory capacity for the
co-channel interference and all kinds of noises, and excellent performance of anti multipath fading.
Ultra-low power consumption:
It supports WOR to reduce overall power consumption. In power-saving mode (Mode 2), it can
regulate overall power consumption by setting receiving response delay. The maximum receiving response delay can be configured
as 2000ms, and the average current is about 30uA.
Fixed
transmission
: Module can communicate with other modules which work in different channels and addresses. It makes
networking and repeater easy. For example: module A transmits AA BB CC to module B (address: 0x00 01, channel: 0x80). The HEX
format is 00 01 80 AA BB CC (00 01 refers to the address of module B, and 80 refers to the channel of module B). Then module B
receives AA BB CC (only module B).
Broadcast
transmission:
To set the module address as 0xFFFF, then the module can communicate with other modules in the
same channel.
FEC:
Forward Error Correction has high coding efficiency & good correction performance. In case of sudden interference, it can
correct the interfered data packets proactively, so that the reliability & transmission range are improved correspondingly. Without
FEC, those data packets can only be dropped.
Sleep
mode:
When the module works in sleep mode (mode 3), it is available for configuration, not for transmitting & receiving.
The typical current is 6.0uA in this mode.
Watchdog:
With a built-in watchdog, the module runs precise layout and time. Once an exception occurs, the module will restart
in 0.107 second, and continue to work according to the previous parameters.
Parameter saving:
The parameters will be saved after setting and will not be reset when powered off. Once powered on, it will
work according to the previous parameters.
Application:
915M is a North American frequency. Compared with 2.4G, it is better in penetration and diffraction but with less
speed rate.
