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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Table 2.Modemdatatransferspeeds Model Region Max Download Max Upload GPRSClass10 Global 236.8Kbps 59.2Kbps LTECategoryM1 Europe 300Kbps 375Kbps LTECategoryNB1 Europe 250Kbps 20Kbps/250Kbps NOTE - Forpartnumberingandorderinginformationseepage 13 Siretta Ltd sales +44(0)118 976 9000...
ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem System Overview This ZETA-NLP can be used in a number of applications, some examples are shown below: » Lowpowercellularcommunicationinterface » Upgradeyourestatewithalowpowersolutionwhichprovides2GfunctionalityontheLTEnetwork » Futureproofyourapplicationstodaybyinstallinga4Gcompatiblesolutionwhichoperateswith2Gfallback » StandardRS232modemattachedtoexistingequipment(PC/MAC/Serveretc. Typically connected devices are: »...
ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem LED Indicators Thereare3LEDoutputsontheZETA-NLPmodemcolouredRed,GreenandBlue. Bydefault,theseshowthefunctional/operationalstateofthemodem.However, thesemayalsobeconfiguredusingsoftwarecontrolbytheuserforotherindication purposes. Table 3 describesthefunctionsoftheLEDs. Figure 11.LEDs BlueLED GreenLED RedLED Table 3.LEDs At power up or PWRON_IN / PWROFF_IN control After power up Undefinedstate Networkregistrationstate/callindication Rapidblinkduringpoweron,otherwiseoff...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem PWRON_IN Power On Procedure LED Indicators PWRON_INisthepoweronsignal(pin4oftheRJ12powerconnector).Taking PWRON_INhighwillturntheZETA-NLPon(assumingthereispowerapplied,butthat theunithasbeenturnedoffusingPWROFF_INpin). Duringpowerup,thegreenandblueLEDsarecontrolleddirectlybytheZETA-NLP powermanagementprocess,andtheredLEDiscontrolledbytheembeddedmodem module.WhiletheZETA-NLPisinthepoweringupprocess,theGreenLEDwill flashrapidly(500mSon,500mSoff)andtheBlueLEDwillbeoffuntilthepowerup processiscomplete.Afterthepoweronprocesshascompleted,theRed,Greenand BlueLED’saredisabledcompletelytosavepowerwhilstitisinanoperatingstate. ThegreenLEDwithbrieflyflashonceevery30secondstoindicatethatthemodemis intheonstate. PWROFF_IN Power Off Procedure LED Indications PWROFF_INisthepoweroffsignalonpin3oftheRJ12powerconnector.Taking PWROFF_INhighwillturnapoweredZETA-NLPoff. Duringpoweroff,thegreenandblueLEDsarecontrolleddirectlybytheZETA-NLP, andtheredLEDiscontrolledbytheembeddedmodemmodule.WhiletheZETA- NLPistransitioningthroughthepoweroffstatetheBlueLEDwillflashrapidly(500mS on,500mSoff)andtheGreenLEDwillbeoffuntilthepoweroffprocessiscomplete whenallLEDswillbeoff.Inthisstate,PWRON_INmaybeusedtoturntheunit onagain.TheblueLEDwillbrieflyflashonceevery30secondstoindicatethatthe...
ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Interfaces USB Serial Port Interface Figure 16.ZETA-NLPUSBConnector AminiUSBtypeBconnectorisprovidedforUSBserialconnection.ESD protectionto+/-4KVcontactdischargeand+/-8KVairdischargeisprovided.Pins onthisconnectorareshownintable 9below. Table 9. MiniUSBConnectors Name Direction Description Low Level Nominal High Level VBUS Input USBPowerVBUS 4.75V 5.25V Differential DataMinus 4.75V...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Power RJ12 Power Connector ThisconnectorisusedforsupplyingDCpowerandpowerON/OFFsignalsforthe modem. Figure 26.RJ12powerconnector Figure 27.Pinnumbering Powerconnector Table 15.Pinusage Name Direction Description Low Level Nominal High Level Input Inputpower RESET_IN Input HardSystemReset PWROFF_IN Input Poweroffsignal PWRON_IN...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Power Supply Requirements ADCpowersupplymustbeconnectedtothepowerinput. Table 16. Characteristicsofpowerinput ZETA-NLP Series DCinputvoltage 7to42V Recommendedinputvoltage 12VDC Supplycurrent@12V: Peak(20msatregistration) Averagestandby 11mA Callinprogress 200mA Ringing 210mA TheZETA-NLPmodemhasawideoperatingvoltageandcanbepoweredfrom7Vto 42V.Poweringthemodemcanbedonein2differentways: » ModemPowerSupply-Standardmultiregionpowersupplyprovidesconstant 12Vat2A » PowerCable-Provideapowersourcebetween7Vto42Vfromthesupplyofthe...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Table 17.ZETA-NLPmodemstates ZETA-NLP State Pin-4 (ON) Pin-3 (OFF) Modem ON/OFF ACTIVE ACTIVE ACTIVE ACTIVE NOT-ACTIVE ACTIVE SwitchesOFF NOT-ACTIVE ACTIVE ACTIVE NOT-ACTIVE SwitchesON ACTIVE NOT-ACTIVE Siretta Ltd sales +44(0)118 976 9000...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Current Consumption Themeasurementsweretakenwith3referencevoltages(7V,12Vand24V). ThemodemwasconnectedviaRS232toaPCinordertosend/receiveAT commands.Thetemperaturewasmaintainedinatemperaturechamber.Thevoice callwithpowerlevel5inGSM900wasestablishedwithaGSMsignalgeneratortest set. Table 18. ZETA-NLPmodemcurrentconsumption Modem State Modemswitchedoff 450uA 320uA 220uA Modemon(notregistered)average 45.6mA 30.6mA 18.3mA Modemon(registered)average 15.3mA 9.4mA 5.34mA Table 19. ZETA-NLPmodulecurrentconsumption Modem Function RegisteredwithIPaddress 15.9mA...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Switching the Modem ON/OFF Power on the ZETA-NLP TheZETA-NLPmodemshaveseveraloptionstopoweron.The2mainoptionsare shownbelow: 1) Autopowerupusingthebuiltinpowercontroller.Thisprocessiscontrolled bydefaultwithinthemodemtocontrolthemodemfunctionalityandallowsfor automaticpowerupwhenpowerissupplied.Theautopoweroncontrolwill automaticallypowerupthemodemasrequiredandmanageitsstatuswhilstitis online. 2) ManuallypowerupthemodemusingthePWRON_INpinontheRJ12power connector(Pin4).Whenthispinisconnectedtologichigh(0.5-42V)for>0.5 secondsthemodemwillpowerup. NOTE-ThemodemisfullyoperationalafterithaspoweredonandabletosendAT commands.Thismaytakeanythingfrom2to20secondsdependingonthestartupprocedure. toconnecttothefastestavailablenetworkandwillfallbacktoslowernetworksasavailable. Thismaytakecontrolofthemodemandisnetworkandtechnologydependant. Power off the ZETA-NLP TheZETA-NLPmodemshaveoneoptiontopoweroffasshownbelow: 1) ManuallypowerdownthemodemusingthePWROFF_INpinontheRJ12power connector(Pin3).Whenthispinisconnectedtologichigh(0.5-41V)for>0.5...
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ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Considerations when manually powering the ZETA-NLP on and off ThePWRON_INandPWROFF_INsignalsrequiresapositive“edge”(a“sharp”signal transitionfromlowtohigh)toturnthemodemon.Thistransitionshouldbearising signalfrom0V(GND)uptoVcc(max42V),oratleastalargefractionofthatvoltage range(>0.5V).Veryslowtransitions(significantlyslowerthanmanymilliseconds)or verysmalltransitions(e.g.onlyafewmillivoltsinsteadof0Vto0.5V)willnotturnon themodem(sincetheyarenotconsideredtobea“positiveedge”). Althoughthiswillnotbeanissueinalmostalltypicalapplicationsofthemodem, underthefollowingconditionspecialdesigncarehastobetaken: » Largecapacitorsinyourpowersupplywhichwillleadtoslowleadingandfalling edges Thecaseabovemightpreventthemodemfromrecognizingthepower-upsignal. Thisisnofailureofthemodemitself,thesamewouldapplytoalmostanyelectronic devicethatprovidesaseparate“power-on”or“reset”signal. Ifyouareindoubt,pleaseusethefollowingrecommendations: » UsetheVccpowersupplysignalfromthemainsupplytotestthepoweronsignal function. »...
See “AT+CSQ Signal Strength” in the AT command manual Tip: Before installing the modem you can use an ordinary mobile telephone to check the signal strength in each possible installation location. Siretta can also provide a cellular signal tester which provides a full breakdown of the cellular signal received.*...
ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Network and subscription: Beforeyourapplicationisused,youmustensurethat yourchosennetworkprovidesthenecessarytelecommunicationservices.Contact yourserviceprovidertoobtainthenecessaryinformation. » I fyouintendtouseSMSintheapplication,ensurethisisincludedinyour subscription. » C onsiderthechoiceofthesupplementaryservicessuchasGPRSandCSD. Power Supply Installations » Useahigh-qualitypowersupplywithshortleads.Thisensuresthatthevoltages attheconnectorpinsarewithinthespecifiedrange,especiallyduringthe maximumpeakcurrentofapproximately2A. » W henthemodemispoweredfromabatteryorahighcurrentsupply,connecta fast1.25Afuseinlinewiththepositivesupply.Thisprotectsthepowercabling...
ZETA-NLP Series LTE Cat M1/NB IoT/GSM Ultra Low Power Modem Safety and Product Care Pleasereadtheinformationinthissection,beforeyoubeginyoursystemintegration. General Precautions » TheZETA-NLPseriesmodemsareastandaloneitemdesignedforindooruse only.Foruseoutsideitmustbeinstalledinaweatherproofenclosure. » Donotexceedtheenvironmentalandelectricallimitsasspecified. » A voidexposingthemodemtolitcigarettes,nakedflamesortoextremehotor coldtemperatures. » N evertrytodismantlethemodem.Therearenocomponentsinsidethemodem thatcanbeservicedbytheuser.Ifyouattempttodismantlethemodem,youwill invalidatethewarranty. » T heZETA-NLPseriesmodemsmustnotbeinstalledorlocatedwherethesurface temperatureoftheenclosuremayexceed85°C.
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