Dragino LT Series User Manual

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LT Series LoRa IO controller User Manual 36 / 42
Notice: In case user has lost the program cable. User can hand made one from a 3.5mm cable.
The pin mapping is:
5.2 How to change the LoRa Frequency Bands/Region?
User can follow the introduction for how to upgrade image. When download the images, choose
the required image file for download.
5.3 How to set up LT to work in 8 channel mode in US915, AU915, CN470 bands?
By default, the frequency bands US915, AU915, CN470 works in 72 frequencies. Many gateways
are 8 channel gateways, in such case, the OTAA joined time and uplink schedule is long and
unpredictable while the end node hopping in 72 frequencies.
User can configure the end node to work in 8 channel models by using the AT+CHE command,
the 500kHz channels are always includes for OTAA.
For example, in US915 band, the frequency table is as below. By default, end node will use all
channels (0~71) for OTAA Join process. After OTAA JOINED, end node will use these all channels
(0~71) to send uplink packets.

Dragino LT Series Specifications

General

Brand	Dragino
Model	LT Series
Category	Controller
Language	English