ATC ATC-875 User manual

ATC-875 Mini-PowerWireless Module
User s Manual
SHENZHEN ATC TECHNOLOGYCO., LTD
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
Tel [phone]Fax: [phone]
1
Beforeusing theproduct, please readthe user smanualcarefully.Anyquestion intechnical,you cancontact
us. Tel:[phone] 83453318.
Features ofATC-875:
1. TransmissionPower
The standard transmitpower2W/1W,users can set it, High receiving sensitivity:-123dbm
2. Working Frequency
Carrier Frequency: 433MHz, optionsof 402-470MHz.
3. Lowpowerconsumption,
DC5VPower,Receivingcurrent<50mA, transmittingcurrent<1.5A/2W(<1A/1W); Sleeping current ＜
1mA.
4. WorkingTemperature
The realindustrialproduct, the working temperature is -40℃~+85℃
5. Output/ Input Interface
It can provide RS-232, RS-485, andTTL.
6. Powercontrol
One sleeping model:awakenfromhardware
7. CircuitStructure
Radioadopts chipintegration, the conversion timefor transceiveris short <20 ms, allindications consistency,
and better performance.
8. High Anti-Interference and Low BER(Bit errorRate)
Based on theGFSK modulation mode,it adopts theefficientcommunication protocol. Theactual bit error rate
is 10 5- ～10 6-when channel bit error rate is 10 2-.
9. Longtransmission distance
Within the rangeof visibility, thereliabletransmission distance can be 2km-10km when place the antenna
higher than 3m.
10. Transparent data transmission
Transparent data interfaceis offered, which canbefitfor nonstandard userprotocol.Anyfalse data generated
intheaircan be filtratedautomatically(Whathasbeenreceivedis exactlywhathas beentransmitted). The
change time for receiving and sending <10ms.
11.Multi-channeland speed
ATC-875 provides various baud rate 1200, 2400, 4800, 9600, 19200 and 38400bps. Thewireless transmission
speedand theconnection baud rate areproportional, to satisfythe customer s equipment.
12. High speed wireless communication and bigdatabuffer
When theRF baud rate is biggerthan the COM baud rate, itcan transmitunlimiteddata atonetime, and when
theRFbaud rate is smaller than or was equaltothe COMbaud rate, maytransmit 512 bytes data.
13. Intelligent data controlandtheuserdoesn t need to prepareexcessive programs
Even it shalf duplex, theuserdoesn tneedtoprepareexcessive programs, onlyreceiving/transmitting the
data fromtheinterface.ATC-875 willautomatically completetheotheroperations, such as
transmission/receiving conversion in the air, control, etc.
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
Tel [phone]Fax: [phone]
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14. High reliability, smalland light
Singlechip radiofrequencyintegratedcircuit andlessened peripheralcircuits,high reliability,and lowfailure
rate.
15. Watchdog monitor
Watchdog monitors the inner function, soitcan changethe traditionalproduct structure and improvethe
product reliability.
ApplicationofATC-875
*AMRAutomatic Meter Reading;
* Wireless alarmandsecurity systems;
* Wireless conferencevoting system;
*Sports training & competition;
* Wireless dishes ordering;
*Electronicbus station and intelligent traffic;
*RF transmitter wireless electronic displayscreen andqueuing machine;
*Point to multi-pointwireless network, wireless on-the-spotbus and automatic data collection system
How to use ATC-875
1. Powersupply
ATC-875 uses DCpower supply with voltageof +4.5V~+5.5V.
5V is the standard power supply.
The user can sharepower with other equipment, butshould select the high qualitypower supply with desirable
ripplefactor. In addition,thereliable groundingmustbe used if thereisotherdeviceinthe systemequipment.
In case offailure toconnectwith theearth, itcan formits owngrounding butitmustbeabsolutelyseparated
fromthe municipal electric supply.
2. ATC-875 interface definition
ATC-875 can supplyTTL、RS232、RS485, Youmust specifythe interface when you order.
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
Tel [phone]Fax: [phone]
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The Pin is as follows:
Module sData
Interface
Module
s PIN Description User sTerminalRemarks
1SLEOutside sleepcontrol (input)
Low level tosleep, High level
awake(can be space)
2TXD TTL/RS232: datatransmittingUser s PC receive
3RXD TTL/RS232: datareceiving User s PC transmitting
4
5GND Connect to the groundConnect to the ground
6ARS-485/A
7BRS-485/B
8/ 9
Module sPower
Interface
1GND GND GND
2+5VPower+Power+
Theconnection of ATC-875 anduser s equipment: TTL, RS-232
RS-485:
Note:
ToavoidconnecttheCOMPort(RS-232) reverse, pleasecheckandassure thevoltage of 2and3 pin isexist
by using multimeter.Ifthere is one pinthathas thevoltage(generallyis –6Vto –9V),anotherhasn tvoltage,
which means the interface is connected reverse, please change theconnection between pin 2 and 3.
3. How touse the software tosearchthe radioandchangethe parameters
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
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A. ConnectATC-875 with the Computer andpower, and choosethe COM ports.
B. Search the radio, whensearchitsuccessfully(thesoftware will clewit), then wecanreadand write the
parameters.
C. Tochangeparameters, you canchoosetheparametersyou want to set, re-readaftersetitok, thenyou
can knowwhether the parameters is you want.
Note:
1. Two modules communicate or more modules, their frequencyand RFbaud rate should bethe same.
2. Module communicate with User s Equipment, TheirCOM parameters shouldbethe same.
The followingtable isATC-875 schannelandfrequency:
Channel FrequencyChannel Frequency
1430.2000MHZ 9458.5250MHZ
2431.4288MHZ10459.1250MHZ
3431.7360MHZ11459.5250MHZ
4430.5072MHZ12460.1250MHZ
5434.6940MHZ13460.5250MHZ
6434.2332MHZ14461.1250MHZ
7433.1580MHZ15461.5250MHZ
8433.9260MHZ16462.1250MHZ
4. Sleeping modeof ATC-875
Awaken fromHardware: In this model, thecurrentis under 1mA.
Sleeping status: Inputlowlevel atDB9 NO. 1 pin, itcan sleep, don ttransmit or receivedata.
Normalworking status:Input High levelatDB9NO. 1pin, itbecome Normalworking status, andcan
transmit andreceive data in10ms.
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
Tel [phone]Fax: [phone]
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Note: ifdon tconnect the NO. 1 pin, then ATC-875 is in Normalwork status.
To change themodulefromawaken state todormantstate, onlyneedtochangetheSLE lowlevelto high
level, the MCU will become dormantstatein 1ms.
To change themodulefromdormant stateto awaken state, onlyneedtochangetheSLE high leveltolow
level, theMCU willbecomeworking statein afewseconds,but to assure the stability fortransmitting data,
theuser should begin transmitting dataafter 60ms.
5. The Conversion betweentransceivermodules
Itneeds1 ms time delayafter the user s equipmentreceived the dataandthen transferred thesend data.
6. TransmittingfromAModule, receivedby B module
When transmitting data, theuser shouldconsiderthe timedelay,in ordertoensure the reliabilityof wireless
communication; wejoinedtheFEC(wrongbefore)andothercoding rules. Inthat case, thecommunication
delayis related tobaud rate, the following is details:
COM baudrate
(Bps)
Time tsl
(ms)
RFbaudrate
(Bps)
Time ts1
(Ms)
3840011480043
1920015240083
9600 251200140
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
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7. Interoperable models
ATC-875 can communicate with all the JZ87 series models. Pleasekindly pay attentiontothe following points
when transmitting:
A. Selectall themodules thesame channels.
B. Allthemodules with the same RF baudrate.
C. Connectthepower supply andinterface well.
8. Powerinstructions (Attached Figureappearance):
The transmitting power is 2Wwhen thelight is red
The transmitting power is 1Wwhen thelight is green
9. Lamp descriptionof normalworking
The modulehasatwo-color work lights;the redlampglitters twicewhen connectthe power supply,thered
lamp glitters when transmitting data, andthe green lamp glitters when receiving data.
10. Installationmethods
Users canuse the module with the negative four screws to install(our company offer the screw).
Dimension:(mm)
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
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11. Parametersdefault:
Channel：5
COM baud rate：9600bps
Interface verify：Noneverification
RF baud rate：9600bps
●Technical specification of ATC-875
Modulationmode: GFSK
Workingfrequency: 433MHZ
Transmissionpower: 2W/1W
Receivingsensitivity: -123dBm
Transmittingcurrent: <1.5A
Receivingcurrent: <50mA
Baudrate: 1200/2400/4800/9600/19200/38400Bit/s, User canset
Interface data format: 8E1/8N1/8O1
Power supply: DC5±0.5V（RS232/RS485）
Workingtemperature: -40oC~85oC
Workinghumidity: 10%～90% relative humidity withoutcondensation
Dimension: 85mm*54mm*20mm
Interoperable models: ATC-871/ATC-873/ATC-875
Optional Antenna:
Howtosolve the trouble
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ATC-875 MiniPower Wireless Module User sManual
Shenzhen ATC technologyCO.,LTD Website: http://www.szatc.com
Tel [phone]Fax: [phone]
8
ItemTrouble Solve ways
1Short distance
1. Check whetherthe environment isbad, theantennais shieldingornot, leadout the
antennaor replace the antennawithhighergain.
2. Check whether the same frequency,power,stronglymagnetic interferenceexist,
change the channel or farawayfromthe interference source.
3.Check whether the power, Voltage and current are matchedor not.
2 Transmission
unable
1. Thepower is badconnect. Checkwhether the red lampglitterin thetransmitter,
re-connect the power line.
2. Signalline is badconnecting. Check whether theredlampglitter inthe transmitter or
is the green lamp glitterin the receiver;
3. Check whether the Channel (frequency)and the RFbaudratebetween the two
modules is the same, re-read andthe set them;
4. WhethertheModuleand user sterminalor computer slevel are matchingornot
(TTL/232/485interface).
3 BER high
1. Check whetherthe greenlampglittertransmittingontheotherside, thatis, whether
there is the same frequencyinterference.
2. Change the channel. MatchingSystem is bad, check whetherthe line connect good;
3. COM or RF baud rate isnot correct, re-set them;
4. Power sripple is too big, replace the power
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