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SX127X RF Module                                                                                                                                                                                        User Manual of E19 Series Modules 

Copyright 

©

2012

2017

Chengdu Ebyte Electronic Technology Co.,Ltd     

 

                                                                                                                                       

 

                                                                                                                                     

LoRa SX-1276 1W 

module 

900.0   

915.0   

931.0   

MHz 

  It ensures that the performance of the module can reach 

the standard if it works in recommended operating 

frequency. 

  It is recommended to avoid the crowded frequencies, such 

as 433.0MHz, 868.0MHz, 915MHz and other integer 

frequencies.

 

1.4

 

Tested distance 

Model No 

Min 

Typ 

Max 

Unit   

Remark 

LoRa SX-1276 1W 

module 

9000 

10000 

11000 

● The external antenna used is of 5dBi gain and vertical 

 

polarization;   

● The interval between each data packet is 2s, sending 100 

 

packets with 30 bytes in each packet, the range at data lose   

rate of lower than 5% is valid range;   

● In order to obtain meaningful and reproduceable results, 

 

we conducted the tests under in clear weather with little   

electromagnetic interference at suburb areas

   

● Distance may be shorter with interference or obstacles.

 

2. Pin definition   

2.1.2

 

LoRa SX-1276 1W module 

 

 

 

Pin No. 

Name 

Direction 

Usage 

GND 

   

Ground electrode, connected to the power reference ground. 

DIO5 

Input/Output 

Configurable IO port

Please find more on SX127X datasheet

DIO4 

Input/Output 

Configurable IO port

Please find more on SX127X datasheet

 

DIO3 

Input/Output 

Configurable IO port

Please find more on SX127X datasheet

 

DIO2 

Input/Output 

Configurable IO port

Please find more on SX127X datasheet

 

DIO1 

Input/Output 

Configurable IO port

Please find more on SX127X datasheet

 

Summary of Contents for LoRa SX-1276 1W

Page 1: ...mplifier enhanced the communication stability and communication distance The 20dBm module integrated the industrial crystal oscillator accuracy is less than 10ppm with stable batch production and widely used for utilities IOT transformation and smart home The related RF parameters can get through the domestic and overseas certification such as FCC CE RoHs etc satisfying export demand Model No RF I...

Page 2: ...Receiving current 3 1 2 3 Turn off current 3 1 2 4 Supply voltage 3 1 2 5 Communication level 4 1 3 RF PARAMETERS 4 1 3 1 Transmitting Power 4 1 3 2 Receiving sensitivity 4 1 3 3 Recommended Frequency 4 1 4 TESTED DISTANCE 5 2 PIN DEFINITION 5 3 USAGE 6 4 REMARK 6 5 PRODUCTION GUIDANCE 7 5 1 REFLOW TEMPERATURE 7 5 2 REFLOW GRAPH 7 6 FAQ 7 6 1 THE COMMUNICATION DISTANCE IS TOO CLOSE 7 6 2 THE MODUL...

Page 3: ...fect the transmitting current value at different levels 1 2 2 Receiving current Model No Min Typ Max Unit Remark LoRa SX 1276 1W module 21 2 23 0 25 3 mA The current consumed when the RF chip is only working at receiving mode is called as receiving current the tested receiving current may be higher for some RF chips with communication protocol or the developers have loaded their own protocol to th...

Page 4: ...Ra SX 1276 1W module 29 6 30 0 30 5 dBm Due to the error of the materials each LRC component has 0 1 error so error accumulation will occur since multiple LRC components are used in the whole RF circuit and the transmitting currents will be different at different modules The power consumption can be lowered by lowering the transmitting power but the efficiency of the internal PA will be decreased ...

Page 5: ... 30 bytes in each packet the range at data lose rate of lower than 5 is valid range In order to obtain meaningful and reproduceable results we conducted the tests under in clear weather with little electromagnetic interference at suburb areas Distance may be shorter with interference or obstacles 2 Pin definition 2 1 2 LoRa SX 1276 1W module Pin No Name Direction Usage 1 GND Ground electrode conne...

Page 6: ...TXEN pin is in high level RXEN pin is in low level when transmitting 17 RXEN Input Radio frequency switch control Make sure the RXEN pin is in high level TXEN pin is in low level when receiving 18 GND Ground electrode connected to the power reference ground 19 ANT Antenna 20 GND Ground electrode connected to the power reference ground 21 GND Ground electrode connected to the power reference ground...

Page 7: ...rature rise is 2 5 s Recirculation zone Maximum temperature is 235 245 Above 217 the time will be 40 80s Cooling zone Maximum cooling is 4 s 5 2 Reflow Graph 6 FAQ 6 1 The communication distance is too close When there s straight Communication barrier the communication distance will be reduced accordingly Temperature humidity and same frequency interference will increase the rate of communication ...

Page 8: ...uipment Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions m...

Page 9: ...e Antenna No Operate frequency band Antenna Type Maximum antenna gain Antenna 1 902 928MHz External Antenna 1 5dBi 2 8 Label and compliance information The final end product must be labeled in a visible area with the following Contains FCC ID Y8E VM LORA 2 9 Information on test modes and additional testing requirements Host manufacturer is strongly recommended to confirm compliance with FCC requir...

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