HAC UM Series Manuel utilisateur

HAC-UM Series RFModuleManual

Version 2.3C

SHENZHENHAC TELECOMTECHNOLOGYCO., LTD

Address :Fl.6, Building 2, JiuxianglingNewIndustryPark, No.4227, Xilihu

Road, Nanshan, Shenzhen, China.

Tel :+86-755-23981078 23981077

Fax :+86-755-23981007

E-mail :webmaster@ rf-module-china.com

Website :http://www.rf-module-china.com

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.

FAX:+86-755-23981077 23981079 -2- www.rf-module-china.com

Catalogue

I. FeaturesofHAC-UMSeries.................................................................................3

II.Applications ofHAC-UMSeries...........................................................................4

III. Howto useHAC-UMSeries..................................................................................4

IV. NetworkingApplication ofHAC-UMSeries.......................................................13

V. TechnicalspecificationofHAC-UMSeries.........................................................14

VI. Descriptionoftype...............................................................................................14

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I. FeaturesofHAC-UM Series

1. Ultra lowpower transmission with 10mWas themaximaltransmittingpower

2. ISM frequencyband with no require ofapplyingfrequency

Thefactorydefault carrier frequencyis433MHz.(868/915MHzavailableasanothertype

UN)

3. High anti-interferenceandLowBER(Bit errorRate)

Basedon theGaussianFrequencyShiftKeying(GFSK) modulation, thehigh-efficiency

forwarderrorcorrection channelencodingtechnologyisusedtoenhancedata sresistanceto

bothtransientinterferenceand randominterferenceand theactualbit errorrateof10-5 ~10-6

can beachieved whenchannelbit errorrateis 10-2.

4. Long Transmission Distance

Withinthevisiblerange,whentheheightofantennaishigher than2mand TheBit Error

Rate(BER)is10-3,thereliabletransmission distancesrespectivelyis1000m@1200bps.

Whenthebaudrateis4800bps, it ismore than700m.Whenthebaudrateis9600bps, it is

more than 500m.

5. Transparentdatatransmission

Transparentdatainterfaceusedintransceiversisformeetingmanystandardornonstandard

user protocols.Anyfalsedatageneratedinaircanbefiltratedautomatically(Whathasbeen

received is exactlywhathas been transmitted).

6. Multi-channels

HAC-UMtransceiversoffer 8channels, ifneeded, 16 or32 channelsavailabletosatisfy

various configuration ofcommunication under user s demand atthesametime

7. 2 ports with three connection methods

HAC-UMtransceiversprovide2portswiththreeconnections, ports:aUARTinterfaceof

TTLlevel,anon-standardRS-232 portand anon-standardRS-485 port,whichbothare

definedbyuser software (defineit justbypluggingoutand inoneshortcircuit device and

then power on).

Note:UM384 (i.e. 38400bps) iswithout anynon-standardRS-232/485port.

8. Bigdatabufferarea

Withoptionalinterfacebaud rate:1200/4800/9600/19200/38400bps and 8N1/8E1 data

format(setbyuser),thetransceivercantransmitunlimiteddataframeswithflexibleuser

program.

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9. Intelligentdatacontroland no anyextra programsrequired

Evenforhalfduplexcommunication, no anyexcessiveprogramsrequired. All RFsystem

datasending/receivingand other On-the-Flyconversion and controlare performedby

HAC-UM transceiversautomatically.

10. Lower power consumption &Sleep function

With+5Vpower,thereceivecurrentisless than32mA,thetransmitcurrentisless than

42mA, and thesleepingcurrentis less than 5µA.

With+3.3Vpower,thereceivecurrentisless than26mA,thetransmit currentisless than

36mA, and thesleepingcurrentis less than 5µA.

11. High reliability, small and light

Byusingmonolithicradio-frequencyintegratedcircuit and single-chipMCU,the

transceivers haveless peripheralcircuits, high reliability, and lowfailure rate.

12. More options ofconfigurableantennas foruser differentapplications.

II. ApplicationsofHAC-UM Series

HAC-UM Series Ultra lowpower dataradio moduleis suitablefor:

Auto Meter Readingsystem.

Remotecontroland monitoring.

Automaticdatacollection.

Buildingautomatization, security, machine-houseequipmentwireless monitoring

POSsystem,wireless keyboard and mouse

Traffic, Personnelpositioningand alarmin thewell

III. HowtouseHAC-UM Series

HAC-UMisamember ofHACserieslowpower dataradiomodules, whichprovidesRS-232,

RS-485 and UART/TTLlevelinterfaceportfordirectconnection withPC,RS485devices, SCM

and other UARTcomponents kind ofapplications. Theschematicdiagramis shown below:

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1. Powersupply

HAC-UMworkwithsupplyvoltage+3.3~5.0 DC.Byusingbetterripplefactor,HAC-UM

transceiverscanalsoshare power supplywithother equipment.Ifpossible,a

voltage-stabilizingchipwith5Vvoltageismore recommendedastheonlypowersupplythan

Switchpower supply.Butifonlyswitchpower supplyavailable,thejambyswitchpulseto

thetransceiversshouldbeavoided. Inaddition, thereliablegroundingmustbeusedifthere is

other deviceinthesystemequipment.Incaseoffailing toconnectwiththeground, it can

formits own groundingbutmustbeabsolutelyseparatedfromthemunicipalelectricsupply.

Iflower power forlowerpower consumption needed, wecanspeciallydesigntolower the

power as+3V.

2. ConnectionDefinitionwithterminal

HAC-UMtransceiverssupplyone9-pinconnector(JP1),theirdefinitions and connection

methods with terminals are shown inTable1.

Table1:JP1PinDefinitions and connectionmethods

SignalName

Function Level Connection

with terminal

Remarks

1 GND Ground Ground

2 VCC Power supplyDC +3.3~

5.0V

3 RxD/TTL Serialdatafor

receivingterminal

TTL TxD

4 TxD/TTL Serialdatafor

transmittingterminal

TTL RxD

5 SGND Signalground

6 A(TxD) AofRS-485 (TxDof

RS-232)

A(RxD)

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7 B(RxD) BofRS-485 (RxDof

RS-232)

B(TxD)

8 SLEEP Sleep control(input) TTL Sleep signal High levelsleep

9 RESETReset signal(Input) TTL Negativepulsereset

3. TheconnectionschematicdiagramofHAC-UMtransceivers withterminal.

4. Setting ofchannel, interface and data format:

Before usingHAC-UM, theuser needs tomakesimpleconfiguration basedon itsownneeds to

determinethechannel, interface modeand dataformat.

There isonegroup of5-bit short-circuit jumper wire(JP2)on theupper rightcorner of

HAC-UM, definedasABCDErespectively.Assumingtheopencircuit ofjumper wire (without

shortcircuiter) ismode1and shortcircuit ofjumper wire (withshortcircuiter) ismode0, then

theconfiguration is as follows:

a. Channelconfiguration:

ABCjumper wiresofJP2provide8options, and theuser canchoosetouse0-7channels

throughABCjumperwires. Withinonesmall communication network, aslongasABCjumper

wire modeis same, there can bemutualcommunication.

Table2:Correspondingfrequencyof0~7 channels

ChannelNo. Frequency ChannelNo. Frequency

CBA=000(0)

430.2000MHz CBA=100(4) 434.6940MHz

CBA=001(1)

431.4288MHz CBA=101(5) 434.2332MHz

CBA=010(2)

431.7360MHz CBA=110(6) 433.1580MHz

CBA=011(3) 430.5072MHz CBA=111(7) 433.9260MHz

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Note: Thefrequencypointscorrespondingtoeachchannelcanbeadjustedbasedon

theuser s needs.

1=Unpluggingshortcircuiter (unconnected)

0 =Pluggingin circuiter

b. Selectionofinterface mode:

HAC-UM provides 2serialports. COM1(Pin3 and Pin4 ofJP1)is fixed asUARTserialportof

TTLlevel; COM2 (Pin6 and Pin7 ofJP1)canchoosenon-standardRS232/485 interfacemode

through DofJP2:

D=1 (Unpluggingshortcircuiter) COM2 =RS-485

D=0 (Pluggingin shortcircuiter) COM2 =RS-232

Thefollowing attentionshouldbepaidforthetwo serialports providedby HAC-UM:

i. Forthedatareceivedfromtheair,whenHAC-UMtransmitsit totheterminal

equipmentthroughserialport,COM1 andCOM2 outputsimultaneously,i.e.iftheuser

connectsonedeviceatCOM1 and COM2 respectively,theybothcanreceivethedata

simultaneously.

ii. Forthedatatransmittedfromtheterminalequipmentand readytotransmit totheair,

HAC-UMcanonlyreceivethedatasentfromeither COM1 orCOM2 butnot

simultaneously.

Suggestion:Theusers arerecommended to useoneserialportofCOM1 orCOM2.

c. Paritymodeselection:

HAC-UMcansupportno-parityorevenparitymodesoftheserialcommunication UART,i.e.

8N1/8E1, which can bechosen byE ofJP2:

E=1 (Unpluggingshortcircuiter) Parity:8E1 (even parity)

E=0 (Pluggingin shortcircuiter) Parity:8N1 (no parity)

NOTE:Thecommunicationdataratecannotbesetbyuser,itisconfirmedwhen

placingordersand set beforedelivery.Theshort circuiterwill beeffectivebyre-powering

onifits methodofplugging inchanged.

5. Supportedprotocoland Transmitcapability

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HAC-UMstandardtransceiversoffer transparentprotocoltosupportvarious applications and

protocolsofusers. Iftheuser needs todecreasehiscostoreasetheworkloadofterminalCPU,

wecanadd otherspecificfunctions basedon thetransparentprotocol,suchasaddressing,data

acquisition, command interpretation, etc.

6. Sleepfunctioninstruction:

Duetoreducingmore consumption, HAC-UMtransceiverssupportSleepfunction. Insleep

mode, thecurrentconsumption is less than 5µA.

Thedefault setofsleepfunction isusuallyclosedtoensure thereliabilityofpreventing

transceiversfromgetting inwrongsleepmode.Thesleepfunction canbeopenedbyHACafter

informed orbyuserviaprogrammingthemsoftware.

a. Howto usetheSleepfunction:

ThePin8 ‘SLP inJP1isthesignalofsleepcontrol.Inhighpower level,whenthetransceiver

staysinsleepmode,theconversion fromidlemodetosleepwill befinishedin1ms. TheSLP

signalcanconverttransceiver fromidletosleepmodein1msafter risingedge.IftheSleep

signalarriveswhenthetransceiver istransmittingdata,themodulewill enter sleepmodeafter

finishingtransmission. Fromsleep modeto idle, it takes thetransceiver 10ms after fallingedge.

Todisablethesleepfunction ofHAC-UM, theSLP(SLEEP)pinshouldbedefinitelyconnected

with 0 orground.

b.Attentions aboutuseofsleepfunction:

Whenthesleepfunction enabled, anysupplyglitches, suchasswitchdithering,fire strikingor

quickswitchingon and off,couldcausethetransceiver tobeswitchedtothewrongsleepmode.

After switching on, userscanavoidthiserrorbymakingacompulsiverestoration onceafterthe

CPUdelays 100ms. Butsuch acondition occurs seldom.

c. SleepTime Diagram:

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7. Theattentions ofdata transmission

a. Thedelay time (tc)ofconversionbetweentransmitting and receiving is less than1ms.

Timing diagram:

b.Thedelay timeoftransceiversbetweenthefirstbitsentbyTxDtothefirstbit

receivedby RxD.

Duetoadataprocessingwill bemadeon user sdatabyHAC-UMtransceiver usingFEC

(ForwardErrorCorrection)orother correction algorithm,whenRxDofaHAC-UM

transceiver ‘Areceivesthedata,thentransmitsit,theotheronetransceiver ‘Bwill havea

delay(ts)toreceiveand transmit byTxD.DifferentRFdataratecausesdifferentdelaytime.

Pleasesee thespecificdelaytimebelow:

Rf DateRate

bps）

Delay

ts ms）

RFDataRate

bps）

Delay

ts ms）

1200 90 9600 12

2400 48 19200 6

4800 24 38400 3

Timing diagram:

c.Errordealing procedure:

Toenhancethereliabilityandstabilityofuser ssystems, averifybit oraCyclicRedundancy

Check(CRC)modeishighlyrecommendedtoresentthewronginformation whileusing

HAC-UM series modules.

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d.Large-numberdatatransmission

Intheory,whentheinterface datarateisfaster thantheRFdatarate,HAC-UMtransceiverscan

send unlimited-longdatapackage,butanylongpackagesmore than120Bare notrecommended.

Thelengthofeachpackageshouldbebetween60~100B.Wealso recommend user toresentthe

wronginformation using AutomaticErrorRequestEquipment(ARQ).

Theanalyzing as below:

Whatiftheactualtransmission BER(Bit ErrorRate)is10-4,1packetwith1KBdata,whichis

about10-thousand bits, issent,theoretically,atleast1bit will bereceivedwrongly,thenthe1KB

information will never bereceived correctly.

Butifwepackagethedatainto10 packetswith100Bforeach, whenall 10 packetsare sent,there

will beonly1packetwrongaccordingtothisprobability.After that,resend thiswrongpacket

usingARQmode.Sobyresendingonemore packetand theefficiencyrateisreduced10%,all

datawill beabsolutelyreceived correctly.

8. Dimensiondiagram(Unit: mm):

Thedimension diagrambelowisthefactorysetdefault ofHAC-UMtransceiver.Other required

smaller sizes and differentshapes canalso beprovided.

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