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.
FAX:[phone] 23981079 -3- www.rf-module-china.com
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.

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -4- www.rf-module-china.com
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:

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -5- www.rf-module-china.com
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)

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -6- www.rf-module-china.com
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

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -7- www.rf-module-china.com
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

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -8- www.rf-module-china.com
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:

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -9- www.rf-module-china.com
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.

HAC-UM Series RFModuleManualSHENZHENHACTECHNOLOGYCO., LTD.
FAX:[phone] 23981079 -10 - www.rf-module-china.com
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.