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Cavli Wireless C16QS Hardware Manual

Lte cat1.bis module
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Cavli C16QS
LTE CAT1.bis Module
Hardware Manual
External Release Version 5.1
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C16QS Hardware Manual
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Summary of Contents for Cavli Wireless C16QS

  • Page 1 C16QS Hardware Manual Cavli C16QS LTE CAT1.bis Module Hardware Manual External Release Version 5.1 Connect to our website and feel free to contact our technical support team for any assistance. www.cavliwireless.com www.cavliwireless.com...
  • Page 2 COPYRIGHT THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF CAVLI WIRELESS INC. TRANSMITTING, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES.

  • Page 3: Table Of Contents

    2.4 Module Working Mode ........................16 3 Interface Application Description ...................... 17 3.1 Chapter Overview ..........................17 3.2 Module Interface ..........................18 3.2.1 C16QS Pin Layout ......................18 3.2.2 C16QS Pin Interface ......................19 3.2.3 Absolute maximum ratings .....................21 3.2.4 Operating Conditions ......................
  • Page 4 C16QS Hardware Manual 3.4.2 Reset Control ........................32 3.5 USB Interface ............................33 3.6 UART Interface ........................... 34 3.6.1 UART0 Serial Port ......................34 3.6.2 UART1 Serial Port ......................35 3.6.3 UART2 Serial Port ......................36 3.6.4 Serial Port Application Circuit ..................36...
  • Page 5 ............................59 5.6 Power Consumption Characteristics ....................60 6 Structural and Mechanical Properties ....................62 6.1 Chapter Overview ..........................62 6.2 C16QS Module Mechanical Size ..................... 63 7 Ordering Information ..........................67 8 Packaging and Production ........................70 8.1 Chapter Overview ..........................70 8.2 Module Packaging and Storage .......................
  • Page 6 C16QS Hardware Manual 9.3.2 FCC Radiation Exposure Statement ................75 9.3.3 OEM Integration Instructions ..................75 9.3.4 Validity of using the module certification ..............76 9.3.5 Upgrade Firmware ......................76 9.3.6 End Product Labeling ....................... 76 10 Appendix ..............................77 10.1 Chapter Overview ..........................77...
  • Page 7 C16QS Hardware Manual Table of Figures Figure 1 C16QS Functional Block Diagram ........................15 Figure 2 C16QS module Interface definition (top view) ....................18 Figure 3 VBAT power supply ............................29 Figure 4 Buck converter reference circuit ........................30 Figure 5 Power-on reference circuit ..........................31 Figure 6 Reset reference circuit .............................32...
  • Page 8 C16QS Hardware Manual VERSION HISTORY Version Edit Date (DD/MM/YYY) Initial Version 13/09/2022 Updated reference circuits  VBAT power supply  LDO linear power supply Power ON   Reset USB connection   UART Serial port Level conversion chip ...
  • Page 9 C16QS Hardware Manual GNSS Performance parameters updated 15/02/2023 Updated table 2-1 and 5-1 with new Temperature values 20/02/2023 Changed the reset reference circuit (Fig 6) Power Consumption characteristics (Table 5-6) updated 07/03/2023 AP_READY description updated 10/03/2023 Power supply information updated (Section 3.3.3)
  • Page 10 Corrected Operating Temperature values in page no: 55 08/01/2024 Updated the WW variant Band List. 24/01/2024 Updated the power reference circuit 31/01/2024 Updated the Revised Technical Information of C16QS 20/02/2024 Updated power consumption Information Updated Power consumption values 16/04/2024 www.cavliwireless.com...

  • Page 11: Introduction

    C16QS Hardware Manual Introduction This document is the Hardware Manual of the Cavli Wireless solution product C16QS Smart Module, which describes: The hardware composition and functional features of the module  The definition and usage of the application interface ...

  • Page 12: Module Overview

    4G LTE feature phone solution. The C16QS communication subsystem integrates LTE CAT.1bis technology and a RF transceiver to cover 1/ 3/ 5/ 8/ 20 (E.A), 2 / 4/ 5/ 12/ 13/ 66(N.A), 1 / 3/ 5/ 8/ 18/ 19/ 26/ 28 (A.N), 2/ 3/ 4/ 7/ 8/ 28 (L.A), 1/ 2/ 3/ 4/ 5/ 7/ 8/ 12/ 18/ 19/ 20/ 25/ 26/ 28/ 40/ 41/ 66 (W.W，B40 is disabled for NA market),1/3/5/8/40/41(I.N)and 1/ 3/ 5/ 7/ 8/ 20/...

  • Page 13: Module Characteristics

    C16QS Hardware Manual 2.2 Module Characteristics Table 2.1 Key Features Characteristics Description Physical Characteristics 26.5mm x 22.5mm x 2.3mm Fixed Way LGA package, patch mount Operating Voltage 3.1V – 4.5V Typical Voltage 3.8 V Application Processor ARM Cortex M3 with a clock frequency of 204MHz.
  • Page 14  Peak DL 10Mbps/ UL 5Mbps (CAT 1.bis)  Support for standard AT instruction sets (Hayes 3GPP TS AT Command 27.007 and 27.005)  Specific AT Query C16QS AT command set TCP(S)/HTTP(S)/MQTT(S)/FTP(S)/PPP Network Protocol TLS versions supported as well  MAIN x 1 Antenna Interface ...

  • Page 15: Module Function

    2.3 Module Function C16QS Module mainly consists of the following circuit units:  RF Band SAW Duplex array  Multi-Band PA  Interfaces The functional block diagram of the C16QS module is shown below： Figure 1 C16QS Functional Block Diagram www.cavliwireless.com...

  • Page 16: Module Working Mode

    C16QS Hardware Manual 2.4 Module Working Mode Working mode Description Turn off Mode In the case of shutdown, the module is fully powered off. Flight Mode The module closes the module RF circuit, unable to interact with the network. Idle Mode...

  • Page 17: Interface Application Description

    C16QS Hardware Manual Interface Application Description 3.1 Chapter Overview This chapter mainly describes the interface definition and application of this module. It contains the following sections: Module Interface   Power Interface Switching Machine Reset Mode   USB Interface UART Interface ...

  • Page 18: Module Interface

    C16QS Hardware Manual 3.2 Module Interface 3.2.1 C16QS Pin Layout C16QS pins are assigned as follows： Figure 2 C16QS module Interface definition (top view) www.cavliwireless.com...

  • Page 19: C16Qs Pin Interface

    C16QS Hardware Manual 3.2.2 C16QS Pin Interface The C16QS module has the LGA interface. The module interface definition is shown in the following table: www.cavliwireless.com...
  • Page 20 C16QS Hardware Manual Symbol Description PAD ATTRIBUTE Analog Input Analog Output Analog input output Bidirectional digital with CMOS input Digital Input (CMOS) Digital Output (CMOS) Digital Input/Output High voltage tolerant Power Input Power Output RF_I Radio Frequency Input RF_IO Bidirectional Radio Frequency Input/Output...

  • Page 21: Absolute Maximum Ratings

    C16QS Hardware Manual 3.2.3 Absolute maximum ratings The absolute maximum ratings table reflects the stress levels that, if exceeded, may cause permanent damage to the device. No functionality is guaranteed outside the operating specifications. Functionality and reliability are only guaranteed within the operating conditions described in Operating conditions.

  • Page 22: Digital I/O Characteristics

    C16QS Hardware Manual 3.2.4.1 Digital I/O characteristics The Digital I/O characteristics of RESETN, AGPIO are follows; Table 3.4 Digital I/O characteristics Parameter Description Typical Unit Supply voltage High-level input voltage 0.7 × VDD – Low-level input voltage – 0.2 × VDD...

  • Page 23: C16Qs Pin Assignment

    C16QS Hardware Manual 3.2.5 C16QS PIN Assignment The C16QS pin names are mentioned as follows. Table 3.5 Pin Name Voltage Pin name Pin Description Comments Type definition RESERVED Do not connect Analog to digital ADC1 converter interface 1 Ground Pin...
  • Page 24 C16QS Hardware Manual AP_READY Wake up Interrupt Module power on status STATUS indication USB_BOOT NET_STATUS function Same as pin 75 UART2_RXD UART 2 Receive data Should be left floating UART2_TXD UART 2 Transmit data Should be left floating Analog to digital...
  • Page 25 C16QS Hardware Manual I2C_SDA I2C Serial data USIM_PRESENCE SIM detect Pin USIM_VDD External SIM power USIM_RST External SIM card reset USIM_DATA External SIM card IO USIM_CLK External SIM clock Ground Pin Ground Pin GNSS Antenna interface ANT_GNSS RF_I 50 Ohm impedance...
  • Page 26 C16QS Hardware Manual RESERVED Do not connect RESERVED Do not connect Ground Pin Ground Pin Ground Pin Ground Pin Ground Pin Ground Pin Ground Pin Ground Pin NET_STATUS Network status indication RESERVED Do not connect RESERVED Do not connect RESERVED...
  • Page 27 C16QS Hardware Manual Ground Pin Ground Pin Ground Pin SWDIO Serial wire debug data SWCLK Serial wire debug clock SPI_MISO Master in slave out SPI_MOSI Master out slave in SPI_CLK Serial clock SPI_CS Slave select GNSS_VRTC_1V8 GNSS RTC Power supply...

  • Page 28: Power Interface

      GNSS_VRTC is the RTC power  USIM_VDD is the working power supply for SIM card 3.3.1 Power Supply Design The power interface of the C16QS module is as follows: Table 3.5 Power pin definitions Power supply Pin No.

  • Page 29: Figure 3 Vbat Power Supply

    Ground 74, 79-82, 89- 91, 100-102 The C16QS module can be powered by a single power supply mode. The module has 4 channels of power supply, two VBAT_BB and two VBAT_RF pins.  The module power supply range is between 3.1V – 4.5V ...

  • Page 30: Power Reference Circuit

    Figure 4 Buck converter reference circuit 3.3.3 VDD_EXT 1.8 Voltage Output The C16QS module outputs 1.8V through VDD_EXT for internal digital circuitry. This voltage is the logic level voltage of the module. After normal power-on, the 29 pin will output 1.8V and the current load will be 50mA.

  • Page 31: Switching Machine Reset Mode

    The 15 pin of the C16QS module is Power on pin. The module can be powered on by pulling down the POWER_KEY Low for at least 500ms. The user can check whether the module is powered on by querying the high and low levels of the VDD_EXT pin.

  • Page 32: Reset Control

    C16QS Hardware Manual NOTE  If you want to enable automatic boot up for the C16QS, connect the PWRKY_N via pull-up with a 4.7K resistor to the module's VDD_EXT. (Not from external 1.8V source) 3.4.2 Reset Control The C16QS module Pin 17 is a reset pin.

  • Page 33: Usb Interface

    C16QS Hardware Manual  The C16QS module supports AT command reset, and the AT command is AT+TRB to restart the module. Detailed instructions can be found in the C16QS AT Command Set Manual. 3.5 USB Interface The C16QS module USB interface supports USB2.0 high-speed protocol, only in slave mode, and does not support USB charging mode.

  • Page 34: Uart Interface

    USB bus device. 3.6 UART Interface The C16QS module provides three sets of UART interfaces. Main serial port and Auxiliary serial ports, serial port level is 1.8V.

  • Page 35: Uart1 Serial Port

    C16QS Hardware Manual NOTE It is always advisable to have a test point for this UART in your design for debugging purposes.  3.6.2 UART1 Serial Port The serial port can realize AT interactive instructions, print program log information, and interact with peripheral data and firmware update.

  • Page 36: Uart2 Serial Port

    C16QS Hardware Manual 3.6.3 UART2 Serial Port The pins 22 and 23 of the module are UART2 serial port pins. This UART is used to obtain the GNSS NMEA data. The pins are defined as follows: Table 3.12 UART2 serial port pin definition Voltage Pin No.

  • Page 37: Figure 8 Full-Featured Serial Port Design

    C16QS Hardware Manual When users want to use the full-featured serial port, they can refer to the following connection methods Figure 8 Full-featured serial port design If you need to use a 2-wire serial port, you can refer to the following serial port design: Figure 9 UART serial port design The serial port of the module is TTL 1.8V level.

  • Page 38: Usim Interface

    1.8/3 1.85/3.05 3.7.1 USIM Card Reference Circuit The C16QS module does not come with a USIM card slot. Users need to design a USIM card slot on their own interface board. The module supports USIM of voltages 1.8V and 2.85V.

  • Page 39: General Purpose Gpio Interface

    C16QS Hardware Manual Figure 11 USIM design circuit diagram NOTE The USIM interface cable is recommended to use ONSEMI's SMF15C device for ESD protection. The  peripheral circuit components should be placed close to the card holder. The SIM card holder is close to the module layout.

  • Page 40: Network Status Indication Interface

    3.9.1 Network Status C16QS provides two network status indication pins: USB_BOOT & NET_STATUS (Pins 21 & 75). These pins are used to drive a network status indication LED. Since both the pins have the same functionality, use only one and keep the other floating.

  • Page 41: Figure 12 Net Light Reference Circuit Diagram

    C16QS Hardware Manual NET_STATUS / NET_STATUS function 1.75 1.85 USB_BOOT NET_STATUS Network status indication 1.75 1.85 Table 3.16 Network Indication Status Status LED display status No service Searching for Network Flashing The module registers 4G network or module to register non-4G...

  • Page 42: Module Status Indication

     3.9.2 Module Status Indication  The C16QS module provides a pin as a working status indicator for the module  This pin can be used to connect to a GPIO or LED with pull-up  It is used to indicate the power-on status of the module ...

  • Page 43: I2S Interface

    1.75 1.85 3.11 I2C Bus The C16QS module provides a set of hardware bidirectional serial buses with an I2C interface of 1.8V level, a 5.0 Protocol interface, and a clock rate of 400 KHz. Table 3.20 I2C pin definition Voltage Pin No.

  • Page 44: Swd Interface

    1.85 The I2C reference circuit is connected as follows: Figure 14 I2C interface reference circuit diagram 3.12 SWD Interface C16QS module provides a 2-pin serial wire debug (SWD) interface which is an alternative to JTAG. Voltage Pin No. Pin name...

  • Page 45: Adc Interface

    ADC0 interface 0 3.14 Antenna The C16QS module provides two antenna interfaces, one main set antenna interface, which is responsible for the CAT .1bis signals of the transceiver module, and another GNSS antenna interface. The GNSS antenna interface is L1.

  • Page 46: Figure 15 Main Antenna Matching Circuit

    The pin 49 of C16QS is the GNSS antenna interface. The C16QS has a dedicated antenna L1, it supports GPS and BEIDOU. In order to facilitate antenna debugging, a π-type matching circuit needs to be added to the motherboard and a 50- ohm impedance line is used.

  • Page 47: Figure 16 Gnss Active Antenna Matching Circuit

    C16QS Hardware Manual Figure 16 GNSS active antenna matching circuit Figure 17 GNSS passive antenna matching circuit NOTE www.cavliwireless.com...

  • Page 48: Rf Trace Reference

    3.14.1 RF Trace Reference The main set of the C16QS module are extracted by pad. The antenna pad to the antenna feed point must use microstrip lines or other types of RF traces. The characteristic impedance of the signal line should be controlled at 50Ω.

  • Page 49: Rf Connector Size

    C16QS Hardware Manual Figure 19 The complete structure of the two-layer PCB microstrip line Figure 20 The complete structure of the multilayer PCB strip line NOTE  Since Coplanar antennas are having maximum noise immunity, it is preferred. 3.14.2 RF Connector Size...

  • Page 50: Figure 21 Rf Connector Size Chart

    C16QS Hardware Manual  If the RF connector is used, the antenna connector must use a coaxial connector with a 50-ohm characteristic impedance.  Hirose's U.FL-R-SMT connector is recommended. Figure 21 RF connector size chart The RF connector plug for this connector is the U.FL-LP series from HRS.

  • Page 51: Control Interface

    C16QS Hardware Manual Frequency Range DC to 6 GHZ –40°C to +85°C Characteristic 50 Ω –40°C to +85°C impedance Figure 23 Matching coaxial RF line size 3.15 Control Interface Table 3.25 Control interface pin definition Pin No. Signal name Description...
  • Page 52 C16QS Hardware Manual  L1 multi-band GNSS receiver  Multi-Constellation GPS/Bei Dou  Integrated 12 muti-tone active interference cancellers  RTCM ready (RTCM v2.3 and v3.3)  Indoor and Outdoor multi-path detection and compensation  132 tracking channels Table 3.26 GNSS interface pin definition Voltage Pin No.

  • Page 53: Spi Interface

     As VBATT_RF powers the entire RF of LTE and GNSS. GNSS_VDD can power entire GNSS section  Please refer the C16QS GNSS Application note for further information. 3.17 SPI Interface Table 3.27 SPI interface pin definition Voltage Signal Pin No.

  • Page 54: Overall Technical Indicators

    C16QS Hardware Manual Overall Technical Indicators 4.1 Chapter Overview The C16QS module RF overall specifications include the following sections:  Working frequency  GNSS Performances  Antenna requirements 4.2 Working Frequency Table 4.1 RF frequency table Frequency band Uplink frequency...

  • Page 55: Gnss Performances

    2496 MHz - 2690 MHz 2500 MHz - 2690 MHz LTE B66 1710 MHz - 1780 MHz 2110 MHz - 2200 MHz 4.3 GNSS Performances C16QS Module GNSS performance parameters: Table 4.2 GNSS performance parameters Features Description Receiving Bands  GPS L1: 1575.42 MHz ...

  • Page 56: Antenna Requirements

    C16QS Hardware Manual 4.4 Antenna Requirements C16QS Module Antenna Design Requirements: Table 4.3 Antenna indicator requirements Frequency band Standing wave ratio Antenna gain Effectiveness B1 FDD <2:1 >16.5 <-88 〉-2.5dbi 〉40% B2 FDD <2:1 >16.5 <-88 〉-2.5dbi 〉40% B3 FDD <2:1...

  • Page 57: Interface Electrical Characteristics

    C16QS Hardware Manual B66 FDD <2:1 >16.5 <-88 〉-2.5dbi 〉40% Interface Electrical Characteristics www.cavliwireless.com...

  • Page 58: Chapter Overview

    -45°C 90°C 5.3 Electrostatic Property There is no overvoltage protection inside the C16QS module. The ESD protection is required when the module is used to ensure product quality. ESD design recommendations:  The USB port needs to add TVS on VDD, D+, D- for protection, and the TVS parasitic capacitance on D+/D- is <2pF...

  • Page 59: Module Io Level

    Low level input 0.35*VDD_EXT voltage High level output VDD_EXT-0.45V VDD_EXT voltage Low level output 0.45V voltage 5.5 Power Supply The C16QS module input power requirements are as follows: Table 5.4 C16QS module Operating Voltage Parameter Minimum value Typical value Maximum value www.cavliwireless.com...

  • Page 60: Power Consumption Characteristics

    C16QS Hardware Manual Input Voltage 3.1V 3.8V 4.5V The power-on time of any interface of the module must not be earlier than the boot time of the module, otherwise the module may be abnormal or damaged. 5.6 Power Consumption Characteristics Table 5.5 LTE power consumption...
  • Page 61 C16QS Hardware Manual Band 41 34.1 Band 66 Powering GNSS Tracking GNSS off & CFUN=0 Sleep 1 µA Sleep 2 µA Hibernate µA Shutdown µA Module Peak 650.88 www.cavliwireless.com...

  • Page 62: Structural And Mechanical Properties

    C16QS Hardware Manual Structural and Mechanical Properties 6.1 Chapter Overview  Module structural image  Module mechanical size 6.2 Module Structural Image www.cavliwireless.com...

  • Page 63: C16Qs Module Mechanical Size

    C16QS Hardware Manual The figure below shows the top and bottom view of the module. Figure 25 Top view and bottom view of the module 6.2 C16QS Module Mechanical Size The figure below shows the bottom view size of the module: www.cavliwireless.com...

  • Page 64: Figure 26 Front View And Side View Of The Module (Unit: Mm)

    C16QS Hardware Manual Figure 26 Front view and side view of the module (unit: mm) www.cavliwireless.com...

  • Page 65: Figure 27 Bottom View Of The Module (Unit: Mm)

    C16QS Hardware Manual Figure 27 Bottom view of the module (unit: mm) www.cavliwireless.com...

  • Page 66: Figure 28 Recommended Footprint (Top View) (Unit: Mm)

    C16QS Hardware Manual Module recommended footprint: Figure 28 Recommended Footprint (Top View) (unit: mm) www.cavliwireless.com...

  • Page 67: Ordering Information

    C16QS Hardware Manual Ordering Information Figure 29 Ordering Information www.cavliwireless.com...
  • Page 68 C16QS Hardware Manual Table 7.1 Ordering Information Part Number Package Type Tape width Tolerance C16QS-EA-S00N Tape & Reel 44mm 0.2 mm C16QS-EA-S00H Tape & Reel 44mm 0.2 mm C16QS-EA-GNAN Tape & Reel 44mm 0.2 mm C16QS-EA-GNAH Tape & Reel 44mm 0.2 mm...
  • Page 69 C16QS Hardware Manual C16QS-EU-S00H Tape & Reel 44mm 0.2 mm C16QS-EU-GNAN Tape & Reel 44mm 0.2 mm C16QS-EU-GNAH Tape & Reel 44mm 0.2 mm C16QS-IN-S00N Tape & Reel 44mm 0.2 mm C16QS-IN-S00H Tape & Reel 44mm 0.2 mm C16QS-IN-GNAN Tape & Reel 44mm 0.2 mm...

  • Page 70: Packaging And Production

     Module packaging and storage  Production welding 8.2 Module Packaging and Storage The C16QS module is packaged in a tape reel with 500 pcs per reel, shipped as a tape reel sealed bag. Figure 30 C16QS Tape Measurements (in mm) www.cavliwireless.com...

  • Page 71: Figure 31 Reel Dimensions Of C16Qs (In Mm)

    C16QS Hardware Manual Figure 31 Reel Dimensions of C16QS (in mm) The storage of the C16QS module is subject to the following conditions:  The module has a moisture sensitivity rating of 3.  When the ambient temperature is greater than 40 degrees Celsius and the air humidity is less than 90%, the module can be stored in a vacuum sealed bag for 12 months.

  • Page 72: Production Welding

    C16QS Hardware Manual 8.3 Production Welding The C16QS module is packaged in an anti-static tray. The SMT wire body needs to be equipped with a Tray module. It is recommended to use a reflow oven above 7 temperature zones.  To ensure the quality of the module paste, the thickness of the stencil corresponding to the pad portion of the C16QSmodule is recommended to be 0.18 mm.
  • Page 73 C16QS Hardware Manual Table 8.1 Reflow Process Parameter Table Warm zone Time Key parameter Preheating zone (4℃~ Heating rate: 1℃/ s ~ 3℃ / s 165℃) （t1～t2）： Temperature zone 70s～120s (160℃～210℃) Peak temperature: 235℃~ 245 ℃ 217 ℃) Recirculation zone (>...

  • Page 74: Warnings

    Warnings 9.1 CE EU Conformity Statement HEREBY, CAVLI INC DECLARES THAT THE EQUIPMENT TYPE LTE MODEM, MODELS C16QS-EA AND C16QS-AN ARE IN COMPLIANCE WITH DIRECTIVE 2014/53/EU MANUFACTURER ADDRESS: 99 SOUTH ALMADEN BLVD., SUITE 600, SAN JOSE, CA 95113 UNITED STATES.

  • Page 75: Fcc Radiation Exposure Statement

    C16QS Hardware Manual  This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.  These limits are designed to provide reasonable protection against harmful interference in a residential installation.

  • Page 76: Validity Of Using The Module Certification

    C16QS Hardware Manual 9.3.4 Validity of using the module certification In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product.

  • Page 77: Appendix

    C16QS Hardware Manual Appendix 10.1 Chapter Overview  Abbreviations  Safety and precautions 10.2 Abbreviations Table 10.1 Abbreviations Abbreviations Full name 3GPP Third Generation Partnership Project Access Point Adaptive Multi-rate Bit Error Rate China Compulsory Certification CDMA Code Division Multiple Access...
  • Page 78 C16QS Hardware Manual Discontinuous Reception EDGE Enhanced Data Rate for GSM Evolution European Union Electromagnetic Compatibility Electrostatic Discharge Federal Communications Commission GPRS General Packet Radio Service Global System for Mobile Communication HSDPA High-Speed Downlink Packet Access HSPA Enhanced High Speed Packet Access...

  • Page 79: Safety And Precautions

    C16QS Hardware Manual Transient Voltage Suppressor Transmitting Direction UART Universal Asynchronous Receiver-Transmitter UMTS Universal Mobile Telecommunications System USIM Universal Subscriber Identity Module USSD Unstructured Supplementary Service Data VSWR Voltage Standing Wave Ratio WCDMA Wideband Code Division Multiple Access WWAN Wireless Wide Area Network 10.3 Safety and Precautions...