Note; Important Statement - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co,;Ltd

11.Note

1. Please keep the warranty card of the equip ment wh ich includes the factory number (and imp ortant technical
parameters) and is important for user's future maintenance and new equipment.
2. Transceiver during the warranty period, if the quality of the product itself rather than man -made damage or
lightning and other natural disasters caused by damage, enjoys free warranty; please do not repair by yourself, the
problem and please contact with our company when problem occurring , we offer the first-class after-sales service.
3. Please do not operate the transceiver in some flammab le p laces such as coal mines or near explosive at mospheres
(such as detonators).
4. Please use the appropriate DC power supply, high frequency interference ab ility, s mall ripple, and enough load
capacity are required; it's better to have over current, over vo ltage protection and lightning protection and other functions
to ensure that transceiver working properly.
5. Please do not use it in the working environment beyond the transceiver environ mental characteristics , such as
high temperature, humidity, low temperature, strong electromagnetic fields or dust larger environment.
6. Please do not continuously keep transceiver to transmit in full capacity, or the transmitter might be damaged.
7. Please connect the ground with the external ground of the power supply (such as PC, PLC, etc.) , otherwise it is
easy to burn out the communication interface; do not plug the interface with power supplying.
8. When testing, please connect the antenna or 50 Ω load, otherwise transceiver will be damaged easily ;the dis tance
from the antenna is better than 2 meters, so as to avoid harm, please do not touch the antenna when transmitting.
9. Wireless data transceiver has different communication distance in different environ ments , communication
distance is influenced by temperature, humid ity, obstacle density, obstacle vo lume and electro magnetic environment; in
order to ensure stable communication, it is recommended to reserve at least 50 % of the communication distance.
10. When communication d istance is not perfect, it is reco mmended to imp rove the antenna quality and the
installation mode of the antenna. You can send mail to support@cdebyte.com for support.
11. When choosing power supply, it is reco mmended to keep at least 50% current left and the ripple must not exceed
100mV.

12.Important statement

1. CDEBYTE reserves the right of final interpretation and modification of all the contents of this manual.
2. As the hardware and software products continuously improving, this manual may subject to change without notice,
please refer to the latest version.
3. Everyone is responsible for protecting the environ ment: to reduce the use of paper, we only prov ide electronic
documents of the English manual, if necessary, please go to our official website to download; In addition, for special
requirements, we agree to offer certain amount of documents according to order quantity, not every data transceiver are
supplied with one manual, pleas e understand;
Chengdu Ebyte Electronic Technology Co,;Ltd
Copyright ©2012–2019，
E90-DTU (433C30) user manual
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