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LTE Module Series

EC25-V User Manual

EC25-V_User_Manual Confidential / Released 44 /
69

Table 20: Behavior of the RI

State

Response

Idle

RI keeps high level

URC

RI outputs 120ms low pulse when new URC returns

The RI behavior can be changed by command

AT+QCFG=“urc/ri/ring”

. Refer to

document [2]

for

details.

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Содержание EC25-V

Страница 1: ...EC25 V User Manual LTE Module Series Rev EC25 V_User_Manual_V1 0 Date 2016 03 28 www quectel com ...

Страница 2: ...ORMATION PROVIDED IS BASED UPON CUSTOMERS REQUIREMENTS QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION THE INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WIT...

Страница 3: ...LTE Module Series EC25 V User Manual EC25 V_User_Manual Confidential Released 2 69 About the Document History Revision Date Author Description V1 0 2016 03 28 Woody WU Initial ...

Страница 4: ... 5 Power Saving 22 3 5 1 Sleep Mode 22 3 5 1 1 UART Application 22 3 5 1 2 USB Application with USB Remote Wakeup Function 23 3 5 1 3 USB Application with USB Suspend Resume and RI Function 23 3 5 1 4 USB Application without USB Suspend Function 24 3 5 2 Airplane Mode 25 3 6 Power Supply 25 3 6 1 Power Supply Pins 25 3 6 2 Decrease Voltage Drop 26 3 6 3 Reference Design for Power Supply 27 3 6 4 M...

Страница 5: ... GNSS Antenna Interface 48 5 3 Antenna Installation 49 5 3 1 Antenna Requirement 49 5 3 2 Install the Antenna with RF Connector 50 6 Electrical Reliability and Radio Characteristics 53 6 1 Absolute Maximum Ratings 53 6 2 Power Supply Ratings 53 6 3 Operating Temperature 54 6 4 Current Consumption 54 6 5 RF Output Power 54 6 6 RF Receiving Sensitivity 55 6 7 Electrostatic Discharge 55 7 Mechanical ...

Страница 6: ...OF PCM AND I2C INTERFACE 39 TABLE 15 PIN DEFINITION OF THE ADC 41 TABLE 16 CHARACTERISTIC OF THE ADC 41 TABLE 17 PIN DEFINITION OF NETWORK INDICATOR 41 TABLE 18 WORKING STATE OF THE NETWORK INDICATOR 42 TABLE 19 PIN DEFINITION OF STATUS 43 TABLE 20 BEHAVIOR OF THE RI 44 TABLE 21 GNSS PERFORMANCE 45 TABLE 22 PIN DEFINITION OF THE RF ANTENNA 47 TABLE 23 THE MODULE OPERATING FREQUENCIES 47 TABLE 24 P...

Страница 7: ...E 32 FIGURE 17 REFERENCE CIRCUIT OF 8 PIN USIM CONNECTOR 33 FIGURE 18 REFERENCE CIRCUIT OF 6 PIN USIM CONNECTOR 33 FIGURE 19 REFERENCE CIRCUIT OF USB APPLICATION 35 FIGURE 20 REFERENCE CIRCUIT WITH TRANSLATOR CHIP 37 FIGURE 21 REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT 38 FIGURE 22 PRIMARY MODE TIMING 39 FIGURE 23 AUXILIARY MODE TIMING 39 FIGURE 24 REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CO...

Страница 8: ...incorporate these guidelines into all manuals supplied with the product If not so Quectel assumes no liability for the customer s failure to comply with these precautions Full attention must be given to driving at all times in order to reduce the risk of an accident Using a mobile while driving even with a handsfree kit causes distraction and can lead to an accident You must comply with laws and r...

Страница 9: ...a service area with adequate cellular signal strength Your cellular terminal or mobile contains a transmitter and receiver When it is ON it receives and transmits radio frequency energy RF interference can occur if it is used close to TV set radio computer or other electric equipment In locations with potencially explosive atmospheres obey all posted signs to turn off wireless devices such as your...

Страница 10: ...ns Data only version does not support voice function while Telematics version supports it With a tiny profile of 32 0mm 29 0mm 2 4mm EC25 can meet almost all requirements for M2M applications such as automotive metering tracking system security router wireless POS mobile computing device PDA phone and tablet PC etc EC25 is an SMD type module which can be embedded in applications through its 144 pi...

Страница 11: ...y cause undesired operation 2 3 Key Features The following table describes the detailed features of EC25 module Table 2 EC25 Key Features Feature Details Power Supply Supply voltage 3 3V 4 3V Typical supply voltage 3 8V Transmitting Power Support up to non CA CAT4 Support 1 4 to 20MHz RF bandwidth FDD Max 50Mbps UL 150Mbps DL TDD Max 35Mbps UL 130Mbps DL LTE Features Support 16 QAM 64 QAM and QPSK...

Страница 12: ...each up to 921600bps 115200bps by default Support RTS and CTS hardware flow control Debug UART Used for Linux console log output 115200bps baud rate USB Interface Support LTE Rx diversity UART Interface Gen8C Lite of Qualcomm Protocol NMEA 0183 GNSS Features Two pins including NET_MODE and NET_STATUS to indicate network connectivity status AT Commands Including main antenna ANT_MAIN Rx diversity a...

Страница 13: ...ustrates the major functional parts Power management Baseband DDR NAND flash Radio frequency Peripheral interface Baseband PMIC Transceiver NAND DDR2 SDRAM PA Switch LNA Switch ANT_MAIN ANT_DIV ANT_GNSS VBAT_BB VBAT_RF APT PWRKEY ADCs VDD_EXT USB USIM PCM UART I2C RESET_N 19 2M XO STATUS GPIOs SAW Control IQ Control Duplex SAW Tx PRx DRx Figure 1 Functional Diagram ...

Страница 14: ... V_User_Manual Confidential Released 13 69 2 5 Evaluation Board In order to help you to develop applications with EC25 Quectel supplies an evaluation board EVB USB data cable earphone antenna and other peripherals to control or test the module ...

Страница 15: ... plus 64 pin ground pads and reserved pads that can be connected to cellular application platform Sub interfaces included in these pads are described in detail in the following chapters Power supply USIM interface USB interface UART interface PCM interface ADC interface Status indication 3 2 Pin Assignment The following figure shows the pin assignment of the EC25 module ...

Страница 16: ...BB VBAT_BB VBAT_RF VBAT_RF GND RESERVED GND GND ANT_MAIN GND ANT_GNSS GND ADC1 RESERVED I2C_SDA I2C_SCL RESERVED ADC0 GND GND GND 73 74 75 76 77 78 79 80 81 82 83 84 100 101 102 106 107 111 112 103 104 109 105 110 89 94 98 88 93 97 86 91 96 85 90 95 99 87 92 108 113 RESERVED RESERVED 117 126 125 124 123 122 121 120 119 118 127 128 115 RESERVED RESERVED 116 139 140 138 137 136 135 134 133 132 131 1...

Страница 17: ... 4 Pin Description Power Supply Pin Name Pin No I O Description DC Characteristics Comment VBAT_BB 59 60 PI Power supply for module baseband part Vmax 4 3V Vmin 3 3V Vnorm 3 8V It must be able to provide sufficient current up to 0 8A VBAT_RF 57 58 PI Power supply for module RF part Vmax 4 3V Vmin 3 3V Vnorm 3 8V It must be able to provide sufficient current up to 1 8A in a transmitting burst VDD_E...

Страница 18: ...OLmax 0 45V 1 8V power domain If unused keep it open NET_ STATUS 6 DO Indicate the module network activity status VOHmin 1 35V VOLmax 0 45V 1 8V power domain If unused keep it open USB Interface Pin Name Pin No I O Description DC Characteristics Comment USB_VBUS 71 PI USB detection Vnorm 5 0V USB_DP 69 IO USB differential data bus Compliant with USB 2 0 standard specification Require differential ...

Страница 19: ...in 1 35V For 3 0V USIM VOLmax 0 45V VOHmin 2 55V USIM_RST 17 DO Reset signal of USIM card For 1 8V USIM VOLmax 0 45V VOHmin 1 35V For 3 0V USIM VOLmax 0 45V VOHmin 2 55V USIM_ PRESENCE 13 DI USIM card insertion detection VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open UART Interface Pin Name Pin No I O Description DC Characteristics Comment RI 62 DO Ring in...

Страница 20: ...en RXD 68 DI Receive data VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open Debug UART Interface Pin Name Pin No I O Description DC Characteristics Comment DBG_TXD 12 DO Transmit data VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open DBG_RXD 11 DI Receive data VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it...

Страница 21: ...Lmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain In master mode it is an output signal In slave mode it is an input signal If unused keep it open I2C Interface Pin Name Pin No I O Description DC Characteristics Comment I2C_SCL 41 OD I2C serial clock Used for external codec External pull up resistor is required 1 8V only If unused keep it open I2C_SDA 42 OD I2C serial data Used for external code...

Страница 22: ...racteristics Comment RESERVED 3 18 23 28 34 37 40 43 55 73 84 113 144 Reserved Keep these pins unconnected 3 4 Operating Modes The table below briefly summarizes the various operating modes referred in the following chapters Table 5 Overview of Operating Modes Mode Details Normal Operation Idle Software is active The module has registered to the network and it is ready to send and receive data Tal...

Страница 23: ... consumption to a minimum value during the sleep mode The following section describes EC25 s power saving procedure 3 5 1 1 UART Application If host communicates with module via UART interface the following preconditions can let the module enter into the sleep mode Execute AT command AT QSCLK 1 to enable the sleep mode Drive DTR to high level The following figure shows the connection between the m...

Страница 24: ...en the module and the host USB_VBUS USB_DP USB_DM AP_READY VDD USB_DP USB_DM GPIO Module Host GND GND Figure 4 Sleep Application with USB Remote Wakeup Sending data to EC25 through USB will wake up the module When EC25 has URC to report the module will send remote wake up signals to USB BUS so as to wake up the host 3 5 1 3 USB Application with USB Suspend Resume and RI Function If host supports U...

Страница 25: ...will wake up the host 3 5 1 4 USB Application without USB Suspend Function If host does not support USB suspend function you should disconnect USB_VBUS with additional control circuit to let the module enter into sleep mode Execute AT command AT QSCLK 1 to enable the sleep mode Ensure the DTR is held in high level or keep it open Disconnect USB_VBUS The following figure shows the connection betwee...

Страница 26: ...le enter into airplane mode Software Command AT CFUN provides the choice of the functionality level fun 0 1 4 AT CFUN 0 Minimum functionality mode both USIM and RF function are disabled AT CFUN 1 Full functionality mode by default AT CFUN 4 Airplane mode RF function is disabled 1 The W_DISABLE control function is disabled in firmware by default It can be enabled by AT command AT QCFG airplanecontr...

Страница 27: ...To decrease voltage drop a bypass capacitor of about 100µF with low ESR should be used Multi layer ceramic chip MLCC capacitor can provide the best combination of low ESR The main power supply from an external application has to be a single voltage source and expanded to two sub paths with star structure The width of VBAT_BB trace should be no less than 1mm and the width of VBAT_RF trace should be...

Страница 28: ...fficient current up to 2A at least If the voltage drop between the input and output is not too high it is suggested that you should use a LDO to supply power for module If there is a big voltage difference between the input source and the desired output VBAT a buck converter is preferred to be used as a power supply The following figure shows a reference design for 5V input power source The design...

Страница 29: ...EC25 is in power down mode it can be turned on to normal mode by driving the PWRKEY pin to a low level for at least 100ms It is recommended to use an open drain collector driver to control the PWRKEY After STATUS pin require external pull up outputting a low level PWRKEY pin can be released A simple reference circuit is illustrated in the following figure Turn on pulse PWRKEY 4 7K 47K 100ms Figure...

Страница 30: ...le Using Keystroke The turn on scenario is illustrated in the following figure VIL 0 5V VIH 1 3V VBAT PWRKEY 100ms RESET_N STATUS OD Inactive Active UART NOTE Inactive Active USB TBD TBD TBD Figure 12 Timing of Turning on Module Make sure that VBAT is stable before pulling down PWRKEY pin The time between them is no less than 30ms NOTE ...

Страница 31: ...dure after the PWRKEY is released The power down scenario is illustrated in the following figure VBAT PWRKEY TBD TBD RUNNING Power down procedure OFF Module Status STATUS OD Figure 13 Timing of Turning off Module 3 7 2 2 Turn off Module Using AT Command It is also a safe way to use AT command AT QPOWD to turn off the module which is similar to turning off the module via PWRKEY Pin Please refer to ...

Страница 32: ... 2 1V VIHmin 1 3V VILmax 0 5V The recommended circuit is similar to the PWRKEY control circuit You can use an open drain collector driver or button to control the RESET_N Reset pulse RESET_N 4 7K 47K TBD Figure 14 Reference Circuit of RESET_N by Using Driving Circuit RESET_N S2 Close to S2 TVS Figure 15 Reference Circuit of RESET_N by Using Button The reset scenario is illustrated in the following...

Страница 33: ... RESET_N pins 3 9 USIM Card Interface The USIM card interface circuitry meets ETSI and IMT 2000 SIM interface requirements Both 1 8V and 3 0V USIM cards are supported Table 9 Pin Definition of the USIM Interface Pin Name Pin No I O Description Comment USIM_VDD 14 PO Power supply for USIM card Either 1 8V or 3 0V is supported by the module automatically USIM_DATA 15 IO Data signal of USIM card USIM...

Страница 34: ...R VDD_EXT 51K 100nF USIM Connector GND GND 33pF 33pF 33pF VCC RST CLK IO VPP GND GND USIM_VDD 15K Figure 17 Reference Circuit of 8 Pin USIM Connector If you do not need the USIM card detection function keep USIM_PRESENCE unconnected The reference circuit for using a 6 pin USIM card connector is illustrated in the following figure Module USIM_VDD USIM_GND USIM_RST USIM_CLK USIM_DATA 22R 22R 22R 100...

Страница 35: ...ripheral circuit should be close to the USIM connector The pull up resistor on USIM_DATA line can improve anti jamming capability when long layout trace and sensitive occasion are applied and should be placed close to the USIM connector 3 10 USB Interface EC25 contains one integrated Universal Serial Bus USB transceiver which complies with the USB 2 0 specification and supports high speed 480Mbps ...

Страница 36: ...esign corresponding with the USB 2 0 specification please comply with the following principles It is important to route the USB signal traces as differential pairs with total grounding The impedance of USB differential trace is 90ohm Do not route signal traces under crystals oscillators magnetic devices and RF signal traces It is important to route the USB differential traces in inner layer with g...

Страница 37: ...nsole and log output The following tables show the pin definition Table 11 Pin Definition of the Main UART Interface Pin Name Pin No I O Description Comment RI 62 DO Ring indicator 1 8V power domain DCD 63 DO Data carrier detection 1 8V power domain CTS 64 DO Clear to send 1 8V power domain RTS 65 DI Request to send 1 8V power domain DTR 66 DI Sleep mode control 1 8V power domain TXD 67 DO Transmi...

Страница 38: ...e design VCCA VCCB OE A1 A2 A3 A4 A5 A6 A7 A8 GND B1 B2 B3 B4 B5 B6 B7 B8 VDD_EXT RI DCD RTS RXD DTR CTS TXD 51K 51K 0 1uF 0 1uF RI_MCU DCD_MCU RTS_MCU RXD_MCU DTR_MCU CTS_MCU TXD_MCU VDD_MCU Translator Figure 20 Reference Circuit with Translator Chip Please visit http www ti com for more information Another example with transistor translation circuit is shown as below The circuit of dotted line c...

Страница 39: ...orks as master only In primary mode the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge the PCM_SYNC falling edge represents the MSB In this mode PCM_CLK supports 128 256 512 1024 and 2048kHz for different speech codecs In auxiliary mode the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge while the PCM_SYNC rising edge rep...

Страница 40: ...22 Primary Mode Timing PCM_CLK PCM_SYNC PCM_OUT MSB LSB PCM_IN 125us MSB 1 2 16 15 LSB Figure 23 Auxiliary Mode Timing The following table shows the pin definition of PCM and I2C interface which can be applied on audio codec design Table 14 Pin Definition of PCM and I2C Interface Pin Name Pin No I O Description Comment PCM_IN 24 DI PCM data input 1 8V power domain ...

Страница 41: ...nd the default configuration is master mode using short sync data format with 2048kHz PCM_CLK and 8kHz PCM_SYNC Refer to document 2 about the command AT QDAI for details The following figure shows the reference design of PCM interface with external codec IC PCM_IN PCM_OUT PCM_SYNC PCM_CLK I2C_SCL I2C_SDA Module 1 8V 4 7K 4 7K BCLK LRCK DAC ADC SCL SDA BIAS MICBIAS INP INN LOUTP LOUTN Codec Figure ...

Страница 42: ...e analog to digital converter ADC1 44 General purpose analog to digital converter The following table describes the characteristic of the ADC function Table 16 Characteristic of the ADC Parameter Min Typ Max Unit ADC0 Voltage Range 0 3 VBAT_BB V ADC1 Voltage Range 0 3 VBAT_BB V ADC Resolution 15 bits 3 14 Network Status Indication The network indication pins can be used to drive a network status i...

Страница 43: ...owly 1800ms High 200ms Low Idle Flicker quickly 125ms High 125ms Low Data transfer is ongoing Always High Voice calling A reference circuit is shown in the following figure 4 7K 47K VBAT 2 2K Module Network Indicator Figure 25 Reference Circuit of the Network Indicator 3 15 STATUS The STATUS pin is an open drain output for indicating the module s operation status You can connect it to a GPIO of DT...

Страница 44: ... to your application demands VDD_MCU 10K Module STATUS MCU_GPIO Module STATUS VBAT 2 2K Figure 26 Reference Circuit of the STATUS 3 16 Behavior of the RI You can use command AT QCFG risignaltype physical to configure RI behavior No matter which port URC is presented on URC will trigger the behavior on RI pin URC can be output from UART port USB AT port and USB modem port by command AT QURCCFG The ...

Страница 45: ..._Manual Confidential Released 44 69 Table 20 Behavior of the RI State Response Idle RI keeps high level URC RI outputs 120ms low pulse when new URC returns The RI behavior can be changed by command AT QCFG urc ri ring Refer to document 2 for details ...

Страница 46: ...nterface by default By default EC25 GNSS engine is switched off It has to be switched on with AT command For more details about GNSS engine technology and configurations please refer to document 3 4 2 GNSS Performance The following table shows EC25 GNSS performance Table 21 GNSS Performance Parameter Description Conditions Typ Unit Sensitivity GNSS Cold start Autonomous TBD dBm Reacquisition Auton...

Страница 47: ...owest GPS signal value at the antenna port for which the module fixes position within 3 minutes after executing cold start command 4 3 Layout Guideline The following layout guideline should be taken into account in your design Maximize the distance between the GNSS antenna the main antenna and the Rx diversity antenna Digital circuits such as USIM card USB interface Camera module Display connector...

Страница 48: ...in antenna and Rx diversity antenna pins definition are shown below Table 22 Pin Definition of the RF Antenna Pin Name Pin No I O Description Comment ANT_MAIN 49 IO Main antenna 50ohm impedance ANT_DIV 35 AI Receive diversity antenna 50ohm impedance 5 1 2 Operating Frequency Table 23 The Module Operating Frequencies 3GPP Band Transmit Receive Unit B4 1710 1755 2110 2155 MHz B13 777 787 746 756 MHz...

Страница 49: ...nce between the main antenna and the Rx diversity antenna to improve the receiving sensitivity 2 ANT_DIV function is enabled by default Use the AT command AT QCFG diversity 0 can disable receive diversity 5 2 GNSS Antenna Interface The following tables show the GNSS antenna pin definition and frequency specification Table 24 Pin Definition of GNSS Antenna Pin Name Pin No I O Description Comment AN...

Страница 50: ...low GNSS Antenna VDD Module ANT_GNSS 47nH 10R 0 1uF 100pF NM NM Figure 28 Reference Circuit of GNSS Antenna 1 You can choose an external LDO to supply power according to the active antenna 2 If you design the module with passive antenna the VDD circuit is not needed 5 3 Antenna Installation 5 3 1 Antenna Requirement The following table shows the requirements on main antenna Rx diversity antenna an...

Страница 51: ... embedded LNA gain 20dB Typ Active antenna total gain 18dBi Typ GSM LTE VSWR 2 Gain dBi 1 Max Input Power W 50 Input Impedance ohm 50 Polarization Type Vertical Cable Insertion Loss 1dB LTE B13 Cable Insertion Loss 1 5dB LTE B4 5 3 2 Install the Antenna with RF Connector The following figure is the antenna installation with RF connector provided by HIROSE The recommended RF connector is UF L R SMT...

Страница 52: ...e Series EC25 V User Manual EC25 V_User_Manual Confidential Released 51 69 You can use U FL LP serial connector listed in the following figure to match the UF L R SMT Figure 30 Mechanicals of UF L LP Connectors ...

Страница 53: ... User Manual EC25 V_User_Manual Confidential Released 52 69 The following figure describes the space factor of mated connector Figure 31 Space Factor of Mated Connector Unit mm For more details please visit http www hirose com ...

Страница 54: ...e listed in the following table Table 27 Absolute Maximum Ratings Parameter Min Max Unit VBAT_RF VBAT_BB 0 3 4 7 V USB_VBUS 0 3 5 5 V Peak Current of VBAT_BB 0 0 8 A Peak Current of VBAT_RF 0 1 8 A Voltage at Digital Pins 0 3 2 3 V Voltage at ADC0 0 VBAT_BB V Voltage at ADC1 0 VBAT_BB V 6 2 Power Supply Ratings Table 28 The Module Power Supply Ratings Parameter Description Conditions Min Typ Max U...

Страница 55: ...transmission slot Maximum power control level on GSM900 1 8 2 0 A USB_VBUS USB detection 3 0 5 0 5 25 V 6 3 Operating Temperature The operating temperature is listed in the following table Table 29 Operating Temperature Parameter Min Typ Max Unit Normal Temperature 35 25 75 º C Restricted Operation 40 35 75 85 º C Storage Temperature 45 90 º C 6 4 Current Consumption This information will be added...

Страница 56: ...cs discharge ESD in general Consequently it is subject to ESD handling precautions that typically apply to ESD sensitive components Proper ESD handling and packaging procedures must be applied throughout the processing handling and operation of any application that incorporates the module The following table shows the module electrostatics discharge characteristics Table 31 Electrostatics Discharg...

Страница 57: ...Confidential Released 56 69 7 Mechanical Dimensions This chapter describes the mechanical dimensions of the module All dimensions are measured in mm 7 1 Mechanical Dimensions of the Module 32 0 15 29 0 15 0 8 2 4 0 2 Figure 32 Module Top and Side Dimensions ...

Страница 58: ...LTE Module Series EC25 V User Manual EC25 V_User_Manual Confidential Released 57 69 29 0 32 0 Figure 33 Module Bottom Dimensions Bottom View ...

Страница 59: ...ential Released 58 69 7 2 Footprint of Recommendation Keepout area 29 0 32 0 Figure 34 Recommended Footprint Top View 1 Pads 73 84 should not be designed 2 In order to maintain the module keep about 3mm between the module and other components in the host PCB NOTES ...

Страница 60: ...Module Series EC25 V User Manual EC25 V_User_Manual Confidential Released 59 69 7 3 Top View of the Module Figure 35 Top View of the Module 7 4 Bottom View of the Module Figure 36 Bottom View of the Module ...

Страница 61: ...baked for 48 hours at 125ºC 5ºC As plastic container cannot be subjected to high temperature the module needs to be taken out from the container for high temperature 125ºC baking If shorter baking time is desired please refer to IPC JEDECJ STD 033 for baking procedure 8 2 Manufacturing and Welding The squeegee should push the paste on the surface of stencil so as to make the paste fill the stencil...

Страница 62: ... actual diagram which we have operated Time 50 100 150 200 250 300 50 100 150 200 250 160 ºC 200 ºC 217 0 70s 120s 40s 60s Between 1 3 ºC s Preheat Heating Cooling ºC s Liquids Temperature Temperature Figure 37 Liquids Temperature 8 3 Packaging EC25 is packaged in tap and reel carriers One reel is 11 53m length and contains 250pcs modules The figure below shows the package details measured in mm ...

Страница 63: ...ntial Released 62 69 30 3 0 15 29 3 0 15 30 3 0 15 32 5 0 15 33 5 0 15 0 35 0 05 4 2 0 15 3 1 0 15 32 5 0 15 33 5 0 15 4 00 0 1 2 00 0 1 1 75 0 1 20 20 0 15 44 00 0 3 44 00 0 1 1 50 0 1 Direction of feed Cover tape 13 100 44 5 0 20 0 00 48 5 Figure 38 Carrier Tape ...

Страница 64: ... Quectel_EC25_GNSS_AT_Commands_Manual EC25 GNSS AT Commands Manual 4 Quectel_Module_Secondary_SMT_User_Guide Module Secondary SMT User Guide Table 33 Terms and Abbreviations Abbreviation Description AMR Adaptive Multi rate bps Bits Per Second CHAP Challenge Handshake Authentication Protocol CS Coding Scheme CSD Circuit Switched Data CTS Clear To Send DC HSPA Dual carrier High Speed Packet Access D...

Страница 65: ... Keying GNSS Global Navigation Satellite System GPS Global Positioning System GSM Global System for Mobile Communications HR Half Rate HSPA High Speed Packet Access HSDPA High Speed Downlink Packet Access HSUPA High Speed Uplink Packet Access I O Input Output Inorm Normal Current LED Light Emitting Diode LNA Low Noise Amplifier LTE Long Term Evolution MO Mobile Originated MS Mobile Station GSM eng...

Страница 66: ...cess TD SCDMA Time Division Synchronous Code Division Multiple Access TX Transmitting Direction UL Uplink UMTS Universal Mobile Telecommunications System URC Unsolicited Result Code USIM Universal Subscriber Identity Module Vmax Maximum Voltage Value Vnorm Normal Voltage Value Vmin Minimum Voltage Value VIHmax Maximum Input High Level Voltage Value VIHmin Minimum Input High Level Voltage Value VIL...

Страница 67: ...he enclosed module This exterior label can use wording such as the following Contains Transmitter Module FCC ID XMR201607EC25V or Contains FCC ID XMR201607EC25V Any similar wording that expresses the same meaning may be used The Grantee may either provide such a label an example of which must be included in the application for equipment authorization or must provide adequate instructions along wit...

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