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SIM7600SA_User Manual_V1.00

Summary of content (65 pages)

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SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision Document Title SIM7600SA_User Manual Version 1.00 Date 2017-10-11 Status Released Document Control ID SIM7600SA_User Manual_V1.00 RF Exposure Statement: For the product,under normal use condition is at least 20cm away from the b ody of the user,the user must keeping at least 20cm distance to the product. General Notes There are no restrictions of use SIM7600SA module.
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Smart Machine Smart Decision Contents Contents............................................................................................................................................... 3 Table Index.......................................................................................................................................... 5 Revision History..................................................................................................................................7 1 Introduction....
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Smart Machine Smart Decision 4 RF Specifications........................................................................................................................41 4.1 GSM/UMTS/LTE RF Specifications....................................................................................41 4.2 GSM /UMTS/LTE Antenna Design Guide...........................................................................43 4.3 GNSS..............................................................................................
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Smart Machine Smart Decision Table Index Table 1: SIM7600SA frequency bands.................................................................................................................. 8 Table 2: General features......................................................................................................................................11 Table 3: Pin definition......................................................................................................................................
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Smart Machine Smart Decision Figure Index Figure 1: SIM7600SA block diagram.................................................................................................................. 10 Figure 2: Pin assignment overview...................................................................................................................... 13 Figure 3: Dimensions (Unit: mm)........................................................................................................................
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Smart Machine Smart Decision Revision History Data Version Description of change Author 2017-10-11 1.00 Original Ma Honggang Gao Fan SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 1 Introduction This document describes the electronic specifications, RF specifications, interfaces, mechanical characteristics and testing results of the SIMCom SIM7600SA module. With the help of this document and other software application notes/user guides, users can understand and use module to design and develop applications quickly. 1.1 Product Outline The SIM7600SA module support GSM, WCDMA, TDD-LTE and FDD-LTE.
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Smart Machine Smart Decision phone, PDA, industrial handheld, machine-to-machine and vehicle application, etc. 1.2 Hardware Interface Overview The interfaces are described in detail in the next chapters include: ● Power Supply ● USB Interface ● UART Interface ● MMC/SD Interface ● SDIO Interface ● USIM Interface ● GPIO ● ADC ● LDO Power Output ● Current Sink Source ● PCM Interface ● SPI Interface ● I2C Interface SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 1.3 Hardware Block Diagram The block diagram of the SIM7600SA module is shown in the figure below. Figure 1: SIM7600SA block diagram SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 1.4 Functional Overview Table 2: General features Feature Implementation Power supply Single supply voltage 3.4～4.2V Power saving Current in sleep mode : <5mA Radio frequency bands Please refer to the table 1 GSM/GPRS power class: --EGSM900: 4 (2W) --DCS1800: 1 (1W) EDGE power class: --EGSM900: E2 (0.5W) --DCS1800: E1 (0.4W) UMTS power class: --WCDMA :3 (0.25W) LTE power class: 3 (0.
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Smart Machine Smart Decision UART interface A full modem serial port by default Baud rate: 300bps to 4Mbps(default:115200bps) Autobauding baud rate: 9600,19200,38400,57600,115200bps Can be used as the AT commands or data stream channel Support RTS/CTS hardware handshake Multiplex ability according to GSM 07.10 Multiplexer Protocol MMC/SD Support MMC and SD cards with 2.95 V on SD port SDIO Support SDIO with 1.8 V only on SDIO port USB USB 2.
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Smart Machine Smart Decision 2 Package Information 2.1 Pin Assignment Overview All functions of the SIM7600SA will be provided through 87 pads that will be connected to the customers’ platform. The following Figure is a high-level view of the pin assignment of the SIM7600SA. Figure 2: Pin assignment overview SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision Table 3: Pin definition Pin No. Pin name Pin No.
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Smart Machine Smart Decision 69 RI 70 DCD 71 TXD 72 DTR 73 PCM_OUT 74 PCM_IN 75 PCM_SYNC 76 PCM_CLK 77 GND 78 GND 79 GNSS_ANT 80 GND 81 GND 82 MAIN_ANT 83 COEX1* 84 COEX2 85 BOOT_CFG0* 86 COEX3* 87 GPIO77 NOTE: Before the normal power up, GPIO43 ， COEX1, COEX3 and BOOT_CFG0 cannot be pulled up. 2.
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Smart Machine Smart Decision VDD_1V8 15 GND 1,2,5, 10,14,37 ,40,41,4 3,57,58, 60,61,64 ,65,77,7 8,80,81 PO 1.8V SMPS output with Max 50mA current output for external circuit, such as level shift circuit. If unused, keep it open. Ground System Control DI,PU System power on/off control input, active low. The high voltage is 0.8V; 4 DI, PU System reset control input, active low. RESET has been pulled up to 1.8V via 40Kohm resistor internally.
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Smart Machine Smart Decision USB_VBUS 11 DI,PD Valid USB detection input with 3.0~5.25V detection voltage USB_DN 12 I/O Negative line of the differential, bi-directional USB signal. USB_DP 13 I/O USB_ID 16 DI Positive line of the differential, bi-directional USB signal.
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Smart Machine Smart Decision GPIO41 52 IO High level: Power on and firmware ready Low level: Power off GPIO GPIO43 50 IO GPIO GPIO3 33 IO GPIO GPIO6 34 IO GPIO Default: GPIO Optional: SD card detecting input. H: SD card is removed L: SD card is inserted Default: GPIO Optional: USIM card detecting input.
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Smart Machine Smart Decision 2.3 Mechanical Information The following figure shows the package outline drawing of SIM7600SA. Figure 3: Dimensions (Unit: mm) SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 2.4 Footprint Recommendation Figure 4: Footprint recommendation (Unit: mm) SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 3 Interface Application 3.1 Power Supply The power supply pins of SIM7600SA include 4 pins (pin 62&63, pin 38&39) named VBAT. The 4 VBAT pads supply the power to RF and baseband circuits directly. On VBAT pads, the ripple current up to 2A typically, due to GSM/GPRS emission burst (every 4.615ms), may cause voltage drop. So the power supply for these pads must be able to provide sufficient current up to more than 2A in order to avoid the voltage drop is more than 300mV.
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Smart Machine Smart Decision 3.1.1 Power Supply Design Guide Make sure that the voltage on the VBAT pins will never drop below 3.4V, even during a transmit burst, when current consumption may rise up to 2A. If the voltage drops below 3.4V, the RF performance may be affected.
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Smart Machine Smart Decision 3.1.2 Recommended Power Supply Circuit It is recommended that a switching mode power supply or a linear regulator power supply is used. It is important to make sure that all the components used in the power supply circuit can resist a peak current up to 2A. The following figure shows the linear regulator reference circuit with 5V input and 3.8V output.
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Smart Machine Smart Decision 3.2 3.2.1 Power on/Power off/Reset Function Power on SIM7600SA can be powered on by pulling the PWRKEY pin down to ground. The PWRKEY pin has been pulled up with a diode to 1.8V internally, so it does not need to be pulled up externally. It is strongly recommended to put a100nF capacitor, an ESD protection diode, close to the PWRKEY pin as it would strongly enhance the ESD performance of PWRKEY pin. Please refer to the following figure for the recommended reference circuit.
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Smart Machine Smart Decision Table 8: Power on timing and electronic characteristic Symbol Parameter Min. Typ. Max.
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Smart Machine Smart Decision Table 9: Power off timing and electronic characteristic Symbol Parameter Toff Time value Min. Unit Typ. Max. The active low level time pulse on PWRKEY pin to 2.
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Smart Machine Smart Decision Table 10: RESET pin electronic characteristic Symbol Description Min. Typ. Max. Unit Treset The active low level time impulse on RESET pin to reset module 50 100 500 ms VIH Input high level voltage 1.17 1.8 2.1 V VIL Input low level voltage -0.3 0 0.8 V 3.3 UART Interface SIM7600SA provides a 7-wire UART (universal asynchronous serial transmission) interface as DCE (Data Communication Equipment).
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Smart Machine Smart Decision TXB0108RGYR provided by Texas Instruments is recommended. The following figure shows the voltage matching reference design. Figure 15: Reference circuit of level shift To comply with RS-232-C protocol, the RS-232-C level shifter chip should be used to connect SIM7600SA to the RS-232-C interface, for example SP3238ECA, etc.
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Smart Machine Smart Decision Figure 17: RI behaviour（voice call） Note: For more details of AT commands about UART, please refer to document [1] and [22]. DTR pin can be used to wake SIM7600SA from sleep. When SIM7600SA enters sleep mode, pulling down DTR can wake SIM7600SA. 3.4 USB Interface The SIM7600SA contains a USB interface compliant with the USB2.0 specification as a peripheral, but the USB charging function is not supported. SIM7600SA can be used as a USB device.
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Smart Machine Smart Decision 3.5 USIM Interface SIM7600SA supports both 1.8V and 3.0V USIM Cards. Table 11: USIM electronic characteristic in 1.8V mode (USIM_VDD=1.8V) Symbol Parameter Min. Typ. Max. Unit USIM_ VDD LDO power output voltage 1.75 1.8 1.95 V VIH High-level input voltage 0.65*USIM_VDD - USIM_VDD +0.3 V VIL Low-level input voltage -0.3 0 0.35*USIM_VDD V VOH High-level output voltage USIM_VDD -0.45 - USIM_VDD V VOL Low-level output voltage 0 0 0.
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Smart Machine Smart Decision Figure 19: USIM interface reference circuit Note: USIM_DATA has been pulled up with a 100KΩ resistor to USIM_VDD in module. A 100nF capacitor on USIM_VDD is used to reduce interference. For more details of AT commands about USIM, please refer to document [1].USIM_CLK is very important signal, the rise time and fall time of USIM_CLK should be less than 40ns, otherwise the USIM card might not be initialized correctly. SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision Recommended USIM Card Holder It is recommended to use the 6-pin USIM socket such as C707 10M006 512 produced by Amphenol. User can visit http://www.amphenol.com for more information about the holder. Figure 20: Amphenol SIM card socket Table 13: Amphenol USIM socket pin description Pin C1 C2 C3 C5 C6 C7 Signal USIM_VDD USIM_RST USIM_CLK GND VPP USIM_DATA SIM7600SA_User Manual_V1.00 Description USIM Card Power supply. USIM Card Reset. USIM Card Clock. Connect to GND.
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Smart Machine Smart Decision 3.6 PCM Interface SIM7600SA provides a PCM interface for external codec, which can be used in master mode with short sync and 16 bits linear format. Table 14: PCM format Characteristics Specification Line Interface Format Linear(Fixed) Data length 16bits(Fixed) PCM Clock/Sync Source Master Mode(Fixed) PCM Clock Rate 2048 KHz (Fixed) PCM Sync Format Short sync(Fixed) Data Ordering MSB Note: For more details about PCM AT commands, please refer to document [1]. 3.
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Smart Machine Smart Decision Figure 23: Module to EXT codec timing Table 15: PCM timing parameters Parameter Description Min. Typ. Max. Unit T(sync) PCM_SYNC cycle time – 125 – μs T(synch) PCM_SYNC high level time – 488 – ns T(syncl) PCM_SYNC low level time – 124.
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Smart Machine Smart Decision 3.6.2 PCM Application Guide The following figure shows the external codec reference design. Figure 24: Audio codec reference circuit 3.7 SD Interface SIM7600SA provides a 4-bit SD/MMC interface with clock rate up to 200 MHz, The voltage of MMC/SD interface is 2.95V, which is compatible with SDIO Card Specification (version 3.0) and Secure Digital (Physical Layer Specification, version 3.0).It supports up to 32GB SD cards.
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Smart Machine Smart Decision Figure 25: SD reference circuit SD card layout guide lines: ● Protect other sensitive signals/circuits from SD card signals. ● Protect SD card signals from noisy signals (clocks, SMPS, etc.).
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Smart Machine Smart Decision Note ： SDA and SCL do not have pull-up resistors in module. So, 2 external pull up resistors are needed in application circuit. “AT+CRIIC and AT+CWIIC” AT commands could be used to read/write register values of the I2C peripheral devices. For more details about AT commands please refer to document [1]. 3.9 SDIO Interface SIM7600SA provides a 4 bit 1.8V SDIO interface for WLAN solution. The default WLAN IC is QCA9377, and the application need software support.
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Smart Machine Smart Decision Table 17: NETLIGHT pin status NETLIGHT pin status Module status Always On Searching Network; Call Connect(include VOLTE,SRLTE) 200ms ON, 200ms OFF Data Transmit; 4G registered; 800ms ON, 800ms OFF 2G/3G registered network OFF Power off ;Sleep Note: NETLIGHT output low level as “OFF”, and high level as “ON”. 3.12 Flight Mode Control The FLIGHTMODE pin can be used to control SIM7600SA to enter or exit the Flight mode.
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Smart Machine Smart Decision 3.13 Other interface 3.13.1 Sink Current Source The ISINK pin is VBAT tolerant and intended to drive some passive devices, such as LCD backlight and white LED, etc. Its output current can be up to 40mA and be set by the AT command “AT+ CLEDITST”. Table 19: Sink current electronic characteristic Symbol Description Min. Typ. Max. Unit VISINK Voltage tolerant 0.5 - VBAT V IISINK Current tolerant 0 - 40 mA ISINK is a ground-referenced current sink.
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Smart Machine Smart Decision 3.13.2 ADC SIM7600SA has 2 dedicated ADC pins named ADC1 and ADC2.They are available for digitizing analog signals such as battery voltage and so on. These electronic specifications are shown in the following table. Table 20: ADC1 and ADC2 electronic characteristics Characteristics Min. Typ. Max. Unit Resolution Conversion time Input Range – 15 – – 442 – 1.7 Bits ms V Input serial resistance 1 – MΩ 0.
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Smart Machine Smart Decision 4 RF Specifications 4.
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Smart Machine Smart Decision E-UTRA Operating Band Uplink (UL) operating band Downlink (DL) operating band Duplex Mode 1 1920 ~1980 MHz 2110 ~2170 MHz FDD 2 1850~1910 MHz 1930~1990 MHz FDD 3 1710 ~1785 MHz 1805 ~1880 MHz FDD 4 1710~1755MHz 2110~2155MHz FDD 5 824～849 MHz 869～894MHz FDD 7 2500~2570MHz 2620~2690MHz FDD 8 880 ~915 MHz 925 ~960 MHz FDD 28 703~748MHz 758~803MHz FDD 66 1710 ~1780 MHz 2110 ~2200 MHz FDD Note: Operating frequencies of LTE TDD B41 for the SIM7
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Smart Machine Smart Decision 4.2 GSM /UMTS/LTE Antenna Design Guide Users should connect antennas to SIM7600SA’s antenna pads through micro-strip line or other types of RF trace and the trace impedance must be controlled in 50Ω. SIMCom recommends that the total insertion loss between the antenna pads and antennas should meet the following requirements: Table 27: Trace loss Frequency Loss 700MHz-960MHz <0.5dB 1710MHz-2170MHz <0.9dB 2300MHz-2650MHz <1.
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Smart Machine Smart Decision Figure 31: Antenna matching circuit (AUX_ANT) In above figure, R3, C3, C4 and R4 are used for auxiliary antenna matching. By default, the R3, R4 are 0Ωresistors, and the C3, C4 are reserved for tuning. D2 is a TVS for ESD protection, and it is optional for users according to application environment. Two TVS are recommended in the table below.
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Smart Machine Smart Decision        Receiver Type: 16-channel, C/A Code GPS L1 Frequency: 1575.42±1.023MHz GLONASS: 1597.5~1605.8 MHz Update rate: Default 1 Hz GNSS data format: NMEA-0183 GNSS Current consumption : 100mA (GSM/CDMA 1X/UMTS/LTE Sleep ,in total on VBAT pins) GNSS antenna: Passive/Active antenna Note: If the antenna is active type, the power should be given by main board because there is no power supply on the GPS antenna pad.
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Smart Machine Smart Decision In above figures, the components C1, L1 and L2 are used for antenna matching. Usually, the values of the components can only be achieved after antenna tuning and usually provided by antenna vendor. C2 is used for DC blocking. L3 is the matching component of the external LNA, and the value of L3 is determined by the LNA characteristic and PCB layout.
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Smart Machine Smart Decision 5 Electrical Specifications 5.1 Absolute maximum ratings Absolute maximum rating for digital and analog pins of SIM7600SA are listed in the following table: Table 29: Absolute maximum ratings Parameter Voltage at VBAT Voltage at USB_VBUS Voltage at digital pins (RESET,SPI,Keypad,GPIO,I2C,UART,PCM) Voltage at digital pins (SD,USIM) Voltage at PWRKEY 5.2 Min. -0.5 -0.5 Typ. - Max. 6.0 5.85 Unit V V -0.3 - 2.1 V -0.3 -0.3 - 3.05 1.8 V Min. 3.4 3.0 Typ. 3.8 5.
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Smart Machine Smart Decision Input low leakage current(no pull up resistor) IIL -1 - - uA *Note: These parameters are for digital interface pins, such as SPI, GPIOs (NETLIGHT, FLIGHTMODE, STATUS, USIM_DET, SD_DET), SDIO, I2C, UART, PCM, COEXn, and BOOT_CFG0. The operating temperature of SIM7600SA is listed in the following table. Table 32: Operating temperature Parameter Normal operation temperature Min. -30 Typ. 25 Max.
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Smart Machine Smart Decision power supply. In this mode, the RF part of the module will not work and the USIM card will not be accessible, but the serial port and USB port are still accessible. The power consumption in this mode is lower than normal mode. Flight mode AT command “AT+CFUN=4” or pulling down the FLIGHTMODE pin can be used to set the module to flight mode without removing the power supply.
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Smart Machine Smart Decision 5.4 Current Consumption The current consumption is listed in the table below. Table 34: Current consumption on VBAT Pins (VBAT=3.8V) GNSS GNSS supply current (AT+CFUN=0,with USB connection) @ -140dBm，Tracking Typical:35mA GSM sleep/idle mode GSM/GPRS supply current (GNSS off，without USB connection) Sleep mode@ BS_PA_MFRMS=2 Typical: 2.
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Smart Machine Smart Decision LTE-FDD B3 LTE-FDD B4 LTE-FDD B5 LTE-FDD B7 LTE-FDD B8 LTE-FDD B28 LTE-FDD B66 5.5 @20Mbps @5Mbps @10Mbps @20Mbps @5Mbps @10Mbps @20Mbps @5Mbps @10Mbps @20Mbps @5Mbps @10Mbps @20Mbps @5Mbps @10Mbps @5Mbps @10Mbps @20Mbps @5Mbps @10Mbps @20Mbps 22.4dBm 22.2dBm 22.1dBm 22.1dBm 22.2dBm 22.1dBm 22.1dBm 22.2dBm 22.1dBm 22.1dBm 22.2dBm 22.1dBm 22.1dBm 22.8dBm 22.8dBm 21.8dBm 21.8dBm 21.8dBm 21.5dBm 21.7dBm 21.
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Smart Machine Smart Decision 6 SMT Production Guide 6.1 Typical SMT Reflow Profile SIMCom provides a typical soldering profile. Therefore the soldering profile shown below is only a generic recommendation and should be adjusted to the specific application and manufacturing constraints. Figure 36: The ramp-soak-spike reflow profile of SIM7600SA Note: For more details about secondary SMT, please refer to the document [21]. 6.
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Smart Machine Smart Decision 4 72 hours 5 48 hours 5a 24 hours 6 Mandatory bake before use. After bake, it must be reflowed within the time limit specified on the label. NOTE: IPC / JEDEC J-STD-033 standard must be followed for production and storage. 6.3 Stencil Foil Design Recommendation The recommended thickness of stencil foil is more than 0.15mm. SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision 7 Packaging SIM7600SA module support tray packaging. Figure 37: packaging diagram Module tray drawing： Figure 38: Tray drawing SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision Table 38: Tray size Length（±3mm） Width（±3mm） Number 161.0 15 242.0 Small carton drawing： Figure 39: Small carton drawing Table 39: Small Carton size Length（±10mm） Width（±10mm） 270 180 Height（±10mm） Number 120 15*20=300 Big carton drawing： Figure 40: Big carton drawing Table 40: Big Carton size Length（±10mm） Width（±10mm） Height（±10mm） Number 380 280 280 300*4=1200 SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision Appendix A. Coding Schemes and Maximum Net Data Rates over Air Interface Table 41: Coding Schemes and Maximum Net Data Rates over Air Interface Multislot definition(GPRS/EDGE) Slot class DL slot number UL slot number Active slot number 1 2 3 4 5 6 7 8 9 10 11 12 1 2 2 3 2 3 3 4 3 4 4 4 1 1 2 1 2 2 3 1 2 2 3 4 2 3 3 4 4 4 4 5 5 5 5 5 GPRS coding scheme Max data rata（4 slots） Modulation type CS 1 = 9.05 kb/s / time slot 36.2 kb/s GMSK CS 2 = 13.
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Smart Machine Smart Decision Category 4 1.8Mbps 16QAM,QPSK Category 5 3.6Mbps 16QAM,QPSK Category 6 3.6Mbps 16QAM,QPSK Category 7 7.2Mbps 16QAM,QPSK Category 8 7.2Mbps 16QAM,QPSK Category 9 10.2Mbps 16QAM,QPSK Category 10 14.4Mbps 16QAM,QPSK Category 11 0.9Mbps QPSK Category 12 1.8Mbps QPSK Category 13 17.6Mbps 64QAM Category 14 21.1Mbps 64QAM Category 15 23.4Mbps 16QAM Category 16 28Mbps 16QAM Category 17 23.4Mbps 64QAM Category 18 28Mbps 64QAM Category 19 35.
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Smart Machine Smart Decision Category 1 5Mbps QPSK/16QAM Category 2 25Mbps QPSK/16QAM Category 3 50Mbps QPSK/16QAM Category 4 50Mbps QPSK/16QAM SIM7600SA_User Manual_V1.
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Smart Machine Smart Decision B. Related Documents Table 42: Related Documents NO. [1] [2] Title SIM7500_SIM7600SA_AT Command Manual_V1.xx ITU-T Draft new recommendationV.25ter Description AT Command Manual Serial asynchronous automatic dialing and control Digital cellular telecommunications (Phase 2+); AT command set for GSM Mobile Equipment (ME) Support GSM 07.
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Smart Machine Smart Decision [17] IEC/EN60950-1(2001) Safety of information technology equipment (2000) [18] 3GPP TS 51.010-1 Digital cellular telecommunications system (Release 5); Mobile Station (MS) conformance specification [19] GCF-CC V3.23.1 Global Certification Forum - Certification Criteria [20] 2002/95/EC [21] [22] Module secondary-SMT-UGD-V1.xx SIM7X00 Series_UART_Application Note_V1.xx [23] SIM7100_SIM7500_SIM7600 SA_USB AUDIO_Application Note_V1.
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Smart Machine Smart Decision C.
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Smart Machine Smart Decision RF RMS RTC SIM SMS SPI SMPS TDMA TE TX UART VSWR SM NC EDGE HSDPA HSUPA ZIF WCDMA VCTCXO USIM UMTS UART Radio Frequency Root Mean Square (value) Real Time Clock Subscriber Identification Module Short Message Service serial peripheral interface Switched-mode power supply Time Division Multiple Access Terminal Equipment, also referred to as DTE Transmit Direction Universal Asynchronous Receiver & Transmitter Voltage Standing Wave Ratio SIM phonebook Not connect Enhanced data rat
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Smart Machine Smart Decision D. Safety Caution Table 44: Safety Caution Marks Requirements When in a hospital or other health care facility, observe the restrictions about the use of mobiles. Switch the cellular terminal or mobile off, medical equipment may be sensitive and not operate normally due to RF energy interference. Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is switched off.
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Smart Machine Smart Decision E. INTEGRATION INSTRUCTIONS 1.1 List of applicable FCC rules FCC Rule Part 22H，FCC Rule Part 24Eand FCC Rule Part 27. 1.2 Summarize the specific operational use conditions None. 1.3 Limited module procedures None. 1.4 Trace antenna designs Refer to sections 4.2 and 4.3. 1.5 RF exposure considerations For the product,under normal use condition is at least 20cm away from the body of the user,the uer must keeping at least 20cm distance to the product. 1.
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Smart Machine Smart Decision Contact us: Shanghai SIMCom Wireless Solutions Ltd. Add: SIM Technology Building, No.633, Jinzhong Road, Changning District, Shanghai P.R. China 200335 Tel：+86 21 3235 3300 Fax：+86 21 3235 3020 URL：www.simcomm2m.com SIM7600SA_User Manual_V1.