Table of Contents
Advertisement
SX127X RF Module
1.3.2 Receiving sensitivity
Model No.
Min
E19 (433M20SC)
-145
E19 (433M20S2)
-145
E19 (433M30S)
-146
E19 (868M20S)
-145
E19 (868M30S)
-146
E19 (915M20S)
-145
E19 (915M30S)
-146
1.3.3 Recommended Frequency
Model No
Min
E19 (433M20SC)
410.0
E19 (433M20S2)
410.0
E19 (433M30S)
410.0
E19 (868M20S)
862.0
E19 (868M30S)
862.0
E19 (915M20S)
900.0
E19 (915M30S)
900.0
1.4 Tested parameters
1.4.1 Tested distance
Model No
Min
E19 (433M20SC)
4500
E19 (433M20S2)
4500
E19 (433M30S)
9000
E19 (868M20S)
4500
E19 (868M30S)
9000
E19 (915M20S)
4500
E19 (915M30S)
9000
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd
Typ
Max
-147
-148
-147
-148
-148
-150
-147
-148
-148
-150
-147
-148
-148
-150
Typ
Max
433.0
441.0
433.0
441.0
433.0
441.0
868.0
893.0
868.0
893.0
915.0
931.0
915.0
931.0
Typ
Max
5000
5500
5000
5500
10000
11000
5000
5500
10000
11000
5000
5500
10000
11000
Unit
dBm
● The current sensitivity is tested under the Coding rate of
4/5 and spread spectrum factor of 12
dBm
● Due to the error of the materials, each LRC component
dBm
has ±0.1% error, so error accumulation will occur since
dBm
multiple LRC components are used in the whole RF circuit,
dBm
and the transmitting currents will be different at different
dBm
modules;
● The receiving sensitivity will be reduced and range will be
dBm
shortened while increasing the air data rate.
Unit
MHz
● It ensures that the performance of the module can reach
MHz
the standard if it works in recommended operating
MHz
frequency.
MHz
● It is recommended to avoid the crowded frequencies, such
MHz
as 433.0MHz, 868.0MHz, 915MHz and other integer
MHz
frequencies.
MHz
Unit
m
● The external antenna used is of 5dBi gain and vertical
polarization;
m
● The interval between each data packet is 2s, sending 100
m
packets with 30 bytes in each packet, the range at data lose
m
rate of lower than 5% is valid range;
m
● In order to obtain meaningful and reproduceable results,
m
we conducted the tests under in clear weather with little
electromagnetic interference at suburb areas；
m
● Distance may be shorter with interference or obstacles.
User Manual of E19 Series Modules
Remark
Remark
Remark
5
Advertisement
Table of Contents
