Hexing Electrical MJN903 Three Phase HexNet User Manual

Hexing Electrical Co.,Ltd Three Phase HexNet Users Manual

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MJN903 User Manual HTML Version

Users Manual

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Three Phase HexNet

（MJN903）

User Manual

Version Maker Date

V0.0.1 WangGang 2017.01.20



HexingElectricalCo.,Ltd.

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〉〉〉Three Phase HexNet（MJN903）

1.Product Introduction

The Three Phase HexNet is a highly integrated half-duplex micropower

wireless data transmission device.The Three Phase HexNet embedded

high-performance RF chip.User programming has very good flexibility. This

device operating frequency include 916.25-926.65MHz. The real figure as

shown in the figure below.

This Three Phase HexNet is mainly used in power system, electricity

information collection system.Mainly include the following equipments：

Data Collector，Smart Electric Meter，etc.

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2.RF Module Chip Block Diagram

3.RF Module Pin Definition

Pin number Signal nameSignal categorySignal direction

1,2VCCPowerI

3,4VCCPowerI

5TXDUarttransmitPinO

6RXDUartreceivePinI

7D3.3VPowerO

8/RSTRESETPinI

9/N

4. RF operation

Insert the HexNet on user’s device，can use uart to communicate with HexNet

device.User don’t change anyting of the HexNet，they will very easy to set up their

communication network.

5. Installation instructions

1）Please insert MJN903 on the corresponding interface, and ensure the pin interface

definitions are consistent with MJN903.

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2）Interfaces are defined as follows：

13579

2468

PIN Interface

definition

Signal

category DirectionDescription

1,2VCCPower

Communicationmoduleanalog

partofthepowersupply,voltageis

5vto15V.

3,4GNDGNDGND

5TXDSignalO

Communicationmoduledata

(TTL3.3Vlevel),serialport

communicatingwiththebase

table.Sendfrommodule

6RXDSignalI

Communicationmoduledata

reception(3.3VTTLlevel),serial

portcommunicatingwiththebase

table.Receivetomodule

7D3.3VPower

Powerprovidedbythemodule,

communicationmoduleofdigital

partofpower,voltageof3.3V+/‐

5%,theminimumcurrent50ma,

withVCCpowersupply,the

isolationopticalcouplingusedto

drivethecommunicationinterface.

8/RSTResetI

Resetmodule(lowleveleffectively,

effectiveleveltime100

milliseconds)

9///Reserved

3）Equipment flip cover and seal

4）Terminal equipment using the lid well

5）Provide equipment machine right alternating current (AC) on the site

6）Equipment terminal cover screw to play well, and make seal

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Installedinthesample

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Installedinthesample

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Installedinthesample

Electric meter models only for reference.

Note：

1 Thank you for using products of Hexing Electrical Co., Ltd. Please read this

warning before using our products. If you have already started to use is that you have

read and accept our all this.

2 All the final explanation and modification rights for all materials were reserved by

Hexing Electrical Co., Ltd.

6.FCC Warning:

AnyChangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliance

couldvoidtheuser'sauthoritytooperatetheequipment.

ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwo

conditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustaccept

anyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.

FCC Radiation Exposure Statement:

TosatisfyFCCRFExposurerequirementsforthistransmissiondevice,aseparationdistanceof

20cmormoreshouldbemaintainedbetweentheantennaofthisdeviceandpersonsduring

operation.Toensurecompliance,operationatcloserthanthisdistanceisnotrecommended.The

antenna(s)usedforthistransmittermustnotbeco‐locatedoroperatinginconjunctionwithany

otherantennaortransmitter.

Hexing Electrical MJN903 Three Phase HexNet User Manual

Hexing Electrical Co.,Ltd Three Phase HexNet Users Manual

Users Manual

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