www.onlineTPS.com                       SIM90                           00/900                                0AGSM MO M  ...
www.onlineTPS.comPI INOUT:          1. DC IN Jack: D Input PIN for GSM MODEM.                         DC         N        ...
www.onlineTPS.com9. Network Indicator LED: Network Status Indicator LED.   State                             SIM900 functi...
www.onlineTPS.comPOWERI     ING SIM900/               /900A MOD                       DEM:   A) POWERING SIM900/900 Modem ...
www.onlineTPS.com    B) POWERING SIM900/900 modem in Manual M                         0A       n        Mode:Step 1: P the...
www.onlineTPS.comConn   necting SIM90 mo         g     00A odem t Computer                        toStep 1: c        confi...
www.onlineTPS.comNow sele the COM port       ect     M                                                   Hyp              ...
www.onlineTPS.comNow the connection is established and you ca send the A        c           s           d          an     ...
www.onlineTPS.com              ADC commands:               D    m    sNote: This Manual is only for customers of www.onlin...
www.onlineTPS.comPWM commands: W    m   d
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SIM900A gsm modem manual www.onlineTPS.com

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Sim900 a gsm modem manual www.onlineTPS.com

Features:

Supply power: DC 9V to 12V (DC 9V typical) NOTE: Recommended power supply DC 9V/3A

Onboard Features:
1. Onboard Power ON & Network indicator LED
2. Onboard indicator LED & buzzer for incoming message & call indication
3. Onboard provision to select the power on of SIM900A (either automatic or manual) using the jumper with onboard switch for manual POWER‐ON.
4. Onboard DB9 connector for connecting modem directly to computers serial port.
5. 3 pin male header (TTL) interface for connecting SIM900 directly with microcontroller.
6. Onboard Audio (speaker and microphone) interface pins.
7. Onboard PWM and ADC channels(SIM900A PWM and ADC PINS)

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SIM900A gsm modem manual www.onlineTPS.com

  1. 1. www.onlineTPS.com SIM90 00/900 0AGSM MO M M ODEMPackage contents: e ¾ SIM900A GS MODEM with Antenn SM na. ¾ DOCUMENT TATION CD.Feature es: ¾ Supply powe DC 9V to 12V (DC 9V typical) NOT Recomme er: t TE: ended power supply DC 9V/3A ¾ Onboard Fea atures: 1. O Onboard Pow ON & Net wer twork indicator LED 2. O Onboard indiccator LED & buzzer for inncoming mes ssage & call indication i 3. O Onboard prov vision to sele the powe on of SIM9 ect er 900A (either automatic oor m manual) using the jumper with onboa switch for manual PO g r ard OWER‐ON. 4. O Onboard DB9 connector for connectin modem directly to com 9 f ng mputers seri port. ial 5. 3 pin male he eader (TTL) innterface for connecting S c SIM900 direc with ctly m microcontroll er. 6. O Onboard Audio (speaker and microph a hone) interfa ce pins. 7. O Onboard PWM and ADC c M channels(SIMM900A PWM and ADC PIN NS)Note: This Manual is only for customers of www.onlinetps.com / Total Project Solutions, publicrelease or web publishing is prohibited without prior permission from Tot al Project Solutions – IndiaProduct Disclaimer The rec ommendations and s uggestions regarding product applic at ion and use that are offered onwww.onlinetps.com, in our produc t broch ures, or information provided by any employee, broker, or dis tributor ofTPS (Tot al Project Solutions), are a guid e in the use of this product and are not a guarantee to their performance s ince TPS,has no control over the use to that other parties may apply the product. Specification may change without an y not ice.Not suitable for critical or indu strial appli cations unless stated, please c larify any doubts before using. V1.0R0.0Copyright © 2010 Total Project SolutionsE7/83F, Ashoka Society , Arera Colony, Bhopal 462016 (M.P.) Indiae-mail: onlinetps.com@gmail.com +91-9826015410 , +91-755-2420735
  2. 2. www.onlineTPS.comPI INOUT: 1. DC IN Jack: D Input PIN for GSM MODEM. DC N 2. Power Enab Switch: This is Power enable switc to Turn ON or turn OF power to t ble ch FF the board. When pressed tu ON the board and when released turns OFF the board urns b d t 3. Power Indiccator LED: Modem power indicator LED. 4. EXT‐EN: Exteernal enable pin to turn ON or OFF S es n SIM900A mo odule with exxternal contr rolling circuit. 5. S/W: Onboa switch to turn ON or OFF SIM900 module manually. ard o r 0A m 6. Power ON selection jum mper: To sele the powe ON mode o the SIM90 (Manual or ect er of 00A Automatic) 7. RI LED and Buzzer: Incom messag and call in B ming ge ndicator LED and buzzer. State RI Response Standbby High Voice C Call Th PIN is cha he anged to Low when any of the follow events o w. wing occurs the PI will IN chhanged to Hi igh 1..Establish the call 2..Hang up the call e Data ca all Th PIN is cha he anged to Low when any of the follow events o w. wing occurs the PI will IN chhanged to Hi igh 1..Establish the call 2..Hang up the call e SMS Th PIN changed to LOW and kept LO for 120ms when SMS is received and then his OW a chhanged to HI IGH. URC Th PIN changed to LOW and kept LO for 120ms when URC is reported and then his OW it is changed to HIGH. t 8. Buzzer Enab Jumper: J ble Jumper to en nable or disa onboard buzzer. able d
  3. 3. www.onlineTPS.com9. Network Indicator LED: Network Status Indicator LED. State SIM900 function Off SIM900 is not running 64ms On/ 800ms Off SIM900 does not find the network 64ms On/ 3000ms Off SIM900 find the network 64ms On/ 300ms Off GPRS communication10. ADC and PWM Pins: ADC and PWM Pins of SIM900A.(Refer page 9,10 for ADC and PWM commands)11. Audio Interface: Audio Pins (Speaker and microphone pins) of SIM900/900A.12. SIM Interface: SIM Card holder Interface.13. Vout: Regulated 4.2V output voltage for external application circuit.
  4. 4. www.onlineTPS.comPOWERI ING SIM900/ /900A MOD DEM: A) POWERING SIM900/900 Modem in Automatic Mode: 0A cStep 1: Put the jumper between ST & AUT PINS. n PStep 2: Connect one end of the serial Cable at the DB9 serial connec of the modem and e s ctor manother end at comp puters serial port. Insert a valid SIM card in the onboard SIMCARD holder.Step 3: I d d hStep 4: A V~12V DC voltage source at DC‐IN jac of SM900A modem. Apply the 9V ck AStep 5: N press th Power‐ON switch to turn on the b Now he N board.
  5. 5. www.onlineTPS.com B) POWERING SIM900/900 modem in Manual M 0A n Mode:Step 1: P the jump between ST & MAN P Put per PINS.Step 2: C Connect one end of the s e serial Cable at the DB9 se a erial connect of the mo tor odem and an notherend at computers se erial port.Step 3: I Insert a valid SIM card in the onboard SIMCARD holder. d d h oltage source at DC‐IN ja of SM900Step 4: : Apply the 9V~12V DC vo 9 ack 0/900A modem.Step 5: N press th Power ON switch to tu on the board. Now he N urnStep 6: N press onboard Switch (S/W) and keep it pre Now d essed for at le 1 sec an then relea the east nd aseswitch O apply the pulse shown below at EXT‐EN pin. OR n 5Sec>TTON>1 HIGH TOFF>= 1.7 Sec LOWNOTE: A work LED will blink at the rate of 64ms ON time/8 After power ON the netw O s 800ms OFF Time andonce the sim900/900A modem is registered to the network the netw e work LED will blink at the rate of l e64ms ON Time/3000 OFF Tim N 0ms me.
  6. 6. www.onlineTPS.comConn necting SIM90 mo g 00A odem t Computer toStep 1: c configure the Modem fo either man or nual or auto omatic powe ON mode using on boa er ardjumper and other se etting as exp plained before in POWE 00/900A Mod ERING SIM90 dem. Open the computers hyp terminal application to launch the applicati gotoStep 2: O per l n, t ionStart>Al programs> ll >Accessories s>Communic cations>hype terminal erStep 2:Step 3:Step 4:Now writ any name on the nam tab and click OK te e me
  7. 7. www.onlineTPS.comNow sele the COM port ect M Hyp perTerminal Setting Bau rate: 9600 ud 0 Dat Bits: 8 ta Pari None ity: Stop bits: 1 p Flow Control: None w NNow clic on the res ck store default setting and click OK t d
  8. 8. www.onlineTPS.comNow the connection is established and you ca send the A c s d an AT‐Comman to the GS modem nds SM NOT A HEX str such as “ 49 49 49 49 FF FF FF FF” will be s TE: ring “00 9 sent out through serial po at ort the baud rate of 115200 imm b f mediately aft SIM900 is powered on The string shall be ignored ter s n. g since it is used fo synchroniz e or zation with PC tool. Only enter the AT commands through ser port P y T s rial afte SIM900/90 is power ON and unsolicited re er 00A red u RDY” is receiv from seri port. esult code “R ved ial IF auuto‐bauding is enabled, the unsolicited result co “RDY” and so on are not indicat when d, odes a e ted usta up the ME and the “A prefix not “at” prefix must be set at the begin art E, AT” nning of eachh commmand line.
  9. 9. www.onlineTPS.com ADC commands: D m sNote: This Manual is only for customers of www.onlinetps.com / Total Project Solutions, publicrelease or web publishing is prohibited without prior permission from Tot al Project Solutions – IndiaProduct Disclaimer The rec ommendations and s uggestions regarding product applic at ion and use that are offered onwww.onlinetps.com, in our produc t broch ures, or information provided by any employee, broker, or dis tributor ofTPS (Tot al Project Solutions), are a guid e in the use of this product and are not a guarantee to their performance s ince TPS,has no control over the use to that other parties may apply the product. Specification may change without an y not ice.Not suitable for critical or indu strial appli cations unless stated, please c larify any doubts before using. V1.0R0.0Copyright © 2010 Total Project SolutionsE7/83F, Ashoka Society , Arera Colony, Bhopal 462016 (M.P.) Indiae-mail: onlinetps.com@gmail.com +91-9826015410 , +91-755-2420735
  10. 10. www.onlineTPS.comPWM commands: W m d

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