HAC UM Series User manual

HAC-UM Series RFModuleManual
Version 2.3C
SHENZHENHAC TELECOMTECHNOLOGYCO., LTD
Address :Fl.6, Building 2, JiuxianglingNewIndustryPark, No.4227, Xilihu
Road, Nanshan, Shenzhen, China.
Tel :[phone] 23981077
Fax :[phone]
E-mail :webmaster@ rf-module-china.com
Website :http://www.rf-module-china.com

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 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

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
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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
Pin 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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9.Antenna configuration:
Manyappropriativeantennasforultra lowpowerRFmodulesare selectedformeetingdifferent
user antennaconfigurations. Pleaseask ourSalesoffice forfurtherinformation abouttheantenna s
dimension and performance.Themainoptions ofantennasareexteriorflagelliformrubber antenna
with helicalSMAjointand microstrip antenna.

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a. Exteriorflagelliformrubberantenna withhelicalSMAjoint
i. LX433-10-SMA:100mm helicalSMAantennas with highgain and lowcost, reacha
longdistance.
ii. LX433-10-ZSMA:100mm SMAhelicalantennawith foldingjoint, easyforadjusting
thedirection and fixing.
iii. LX433-3-SMA:35mm SMAhelicalantennawithmagneticcore, small size, beautiful
appearance(likethemobilephoneantenna)
b.SMTmicrostripantenna: WD433-3, thedimension is30mm*7mm,small size,it canbe
weldedon thePCBboard. Whenweldingtheantenna,theantennaneedtowrapwiththePCB
board5mm,it makesthetotallengthtobe25mm.Usingtheantenna,it canreduce thevolume
and heightand maketheproducts structure moresimple.

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c.Magneticantenna: XP433-300H-SMA,includemagneticantennabase,suitablefor
equipmentwith metalshell, easyforfixing, effectiveto enhancethetransmission distance.
d.Springantennas: HAC-TH433-B,suitableforembeddinginminitypeequipmentwithout
metalshield, lowcost.
Iftheuser has specialdemands on antennas, wecan designand produce forthemspecially.
IV. NetworkingApplicationofHAC-UM Series
Thecommunication channelofHAC-UMishalfduplex,whichismostsuitableforthe
communication modeofpointtomulti-point.Under thismode,onemaster station mustbe
set,and all oftherestare slavestations. Auniqueaddress isgiventoeachstation. The
coordination ofcommunication iscontrolledbymaster station thatusesdataframes
containingaddress codetotransmit dataorcommand. Slavestation willreceiveall ofthe
dataand command and compare thereceivedaddress codewithlocaladdress code.Ifthey
are different,thedatawill bedesertedwithoutanyresponse.Ifthoseaddress codesare the
same,it means thedataissenttothelocal.Slavestation will makedifferentresponses
accordingtothetransmitteddataorcommand andsend backthedataofresponse.All these
jobs mustbeperformedbyupperprotocol,and it isassuredthatthere isonlyone
transmitter-receiverinthestateoftransmission inthecommunication networkatanyinstant
momentso as to avoid thecross-interference.
HAC-UMcanalso beusedforpoint-to-pointcommunication witheasier operation. Forthe
programmingofserialport, all you haveto do is torememberthatits communication modeis
semi duplexwhilealwaysobservingthetimesequenceofcome-and-goforreceivingand
transmitting.

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V. TechnicalspecificationofHAC-UM Series
Modulation mode:GFSK/FSK
Workingfrequency:429.00~434.93MHz
Power supply:3.3 ~ 5.5VDC
Transmission power:10dBm(10mW)
Interface datarate:1200/2400/4800/9600/19200/38400bps, setbefore delivery.
Receivingsensitivity:-105dBm~-118dBm, (-112dBm@9600bps under 10-2 BER)
Bandwidth:12.5K@1200bps, 100K@9600bps
Interface dataformat: 8E1/8N1
Transmit current: ≤42mA
Receivecurrent: ≤32mA
Sleep current: ≤5µA
Workinghumidity:10%~90%relativehumiditywithoutcondensation
Workingtemperature:-20℃~70℃(Commercial), -35℃~80℃(Industrial)
Dimension:47×26×10mm
VI. Descriptionoftype
ForproducttypeHACUM96, “HAC-”indicatesthenameofmanufacturer ShenZhenHAC
TechnologyCo., Ltd., “U”means ultra lowpower,i.e.transmission power is10dBm, “M”
indicatescarrierfrequency402~470MHz,thefactorydefault is433.926MHz,and 96
indicates thatinterface baud rateis 9600bps.