DE921 Hardware User Guide 1vv0301183 Rev.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 APPLICABILITY TABLE PRODUCT DE921 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. The information in this document has been carefully checked and is believed to be entirely reliable. However, no responsibility is assumed for inaccuracies or omissions.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Usage and Disclosure Restrictions License Agreements The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement. Copyrighted Materials Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Contents 1. Introduction ................................................. 8 1.1. Scope ..................................................... 8 1.2. Audience .................................................. 8 1.3. Contact Information, Support .............................. 8 1.4. Document Organization ..................................... 9 1.5. Text Conventions ......................................... 10 1.6. Related Documents .
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 6. Antenna ..................................................... 34 6.1. CDMA Antenna Requirements ................................ 34 6.1.1. 6.1.2. 6.1.3. 6.2. CDMA antenna – PCB line Guidelines ......................... 35 PCB Guidelines in case of FCC certification ................ 36 CDMA Antenna – Installation Guidelines ..................... 38 GNSS Antenna Requirements ................................ 39 6.2.1. 6.2.2. 6.2.3. 6.2.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 13. Mounting the Module on your Board ........................... 58 13.1. General ................................................ 58 13.2. Module Finishing & Dimensions .......................... 58 13.3. Recommended foot print for the application ............. 59 13.4. PCB Pad Design ......................................... 59 13.5. Recommendations for PCB Pad Dimensions (mm) ............ 60 13.6. Solder Paste ....................
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 1. Introduction 1.1. Scope The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit DE921 module. 1.2. Audience This document is intended for Telit customers who are about to implement their applications using our DE921 modules. 1.3.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 1.4. Document Organization This document contains the following chapters: Chapter 1: “Introduction” provides a scope for this document, target audience, contact and support information, and text conventions. Chapter 2: “General Product Description” gives an overview of the features of the product. Chapter 3: “DE921 Module Connections” deals with the pin out configuration and layout.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 1.5. Text Conventions Danger – This information MUST be followed or catastrophic equipment failure or bodily injury may occur. Caution or Warning – Alerts the user to important points about integrating the module. If these points are not followed, the module and end user equipment may fail or malfunction. Tip or Information – Provides advice and suggestions that may be useful when integrating the module. All dates are in ISO 8601 format, i.e.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 2. General Product Description 2.1. Overview The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit DE921 module. In this document all the basic functions of a mobile device will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be evidenced.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 2.2. Product Specifications DE921 Specifications Air Interface CDMA 1xRTT CDMA 1xEV-DO Rev. A Frequency Bands 800MHz/secondary 800MHz/1900MHz Data Service CDMA 1xRTT: 153.6 Kbps (full-duplex) CDMA 1xEV-DO Rev. A: 3.1Mbps (F/L), 1.8Mbps (R/L) Location solution gpsOne Max.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 2.3. Audio PCM interface for Digital audio Message SMS (MO/MT) Approvals Regulatory: TBD Carrier: TBD RoHS Compliance As a part of Telit’s corporate policy of environmental protection, the DE921 complies with the RoHS (Restriction of Hazardous Substances) directive of the European Union (EU Directive 2011/65/EU). Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 3. DE921 Module Connections 3.1. Pin-Out Pad no. Function I/O VOLTAGE ACTIVE LOW IF UNUSED W18 ADC1 I 2.85V Ground X19 I 2.
DE910 Series Hardware User Guide 1vv0301183 Rev.
DE910 Series Hardware User Guide 1vv0301183 Rev.
DE910 Series Hardware User Guide 1vv0301183 Rev.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 NOTE: Almost all pins not in use must be left disconnected.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 3.1.1. BGA Pads Layout Top View NOTE: The pin defined as RES must be considered RESERVED and not connected on any pin in the application. The related area on the application has to be kept empty. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 4. Hardware Commands 4.1. Turning on the DE921 module To turn on the DE921, the pad ON_OFF* must be tied low for at least 1 second and then released. The maximum current that can be drained from the ON_OFF* pad is 0.1 mA. A simple circuit to power on the module is illustrated below: 4.1.1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 During the Initialization state, any kind of AT-command is not available. DTE must wait for the Activation state to communicate with DE921. To check if the DE921 has powered on, the hardware line PWRMON must be monitored. When PWRMON goes high, the module has powered on. NOTE: Do not use any pull up resistor on the ON_OFF* line. It is pulled up internally.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 4.2. Turning off the DE921 module Turning off the device can be done in two ways: By software command (see DE921 Software User Guide) By hardware shutdown When the device is shut down by software command or by hardware shutdown, it issues a detach request to the network that informs the network that the device will no longer be reachable.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 4.2.1. Shutdown by Software Command The DE921 can be shut down by a software command. When a shutdown command is sent, the DE921 goes into the finalization state and will shut down PWRMON at the end of this state. The period of the finalization state can vary according to the state of the DE921 so it cannot be fixed definitely.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 TIP: To check if the device has powered off, hardware line PWRMON must be monitored. When PWRMON goes low, the device has powered off. 4.3. Hardware Reset WARNING: The Hardware Reset must not be used during normal operation of the device since it does not detach the device from the network. It shall be kept as an emergency exit procedure to be done in the rare case that the device gets stuck waiting for some network. 4.3.1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 For example: To drive the RESIN* pad with a totem pole output of a +3/5 V microcontroller (uP_OUT2): 4.4. Summary of Turning ON and OFF the Module The chart below describes the overall sequences for turning the module ON and OFF. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 5. Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product’s overall performance. Read carefully the requirements and the guidelines that follow for a proper design. 5.1. Power Supply Requirements The external power supply must be connected to VBATT signals and must fulfill the following requirements: Power Supply Nominal Supply Voltage 3.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Current Consumption Average (mA) Mode No call in progress (slot cycle index=2, hybrid mode) Standby mode AT+CFUN=1 GPS=off 15 AT+CFUN=4 GPS=off 20 AT+CFUN=5 GPS=off <1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 5.2. General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps: the electrical design the thermal design the PCB layout 5.2.1. Electrical Design Guidelines The electrical design of the power supply depends strongly on the power source where this power is drained.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 An example of a linear regulator with 5V input: 5.2.3. +12V Input Source Power Supply Design Guidelines The desired output for the power supply is 3.8V, hence due to the big difference between the input source and the desired output, a linear regulator is not suitable and must not be used. A switching power supply would be preferable because of its better efficiency, especially with the 1A peak current load represented by DE921.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 An example of switching regulator with 12V input is in the schematic below: 5.2.4. Battery Source Power Supply Design Guidelines The desired nominal output for the power supply is 3.8V and the maximum voltage allowed is 4.2V. A single 3.7V lithium-ion cell battery type is ideal to supply power to the Telit DE921 module. WARNING: The three battery cells (Ni/Cd or Ni/MH 3.6V nom.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 5.2.5. Thermal Design Guidelines The thermal design for the power supply heat sink must be done with the following specifications: Average current consumption during CDMA 1x / 1xEV-DO transmission @PWR level max : TDB mA Average GPS current during GPS ON (Power Saving disabled) in DE921 : TBD mA NOTE: The average consumption during transmissions depends on the power level at which the device is requested to transmit via the network.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 5.2.6. Power Supply PCB layout Guidelines As seen in the electrical design guidelines, the power supply must have a low ESR capacitor on the output to cut the current peaks and a protection diode on the input to protect the supply from spikes and polarity inversion. The placement of these components is crucial for the correct operation of the circuitry. A misplaced component can be useless or can even decrease the power supply performance.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 The below figure shows the recommended circuit: Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 6. Antenna The antenna connection and board layout design are the most important parts in the full product design and they strongly reflect on the product’s overall performance. Read carefully and follow the requirements and the guidelines for a proper design. 6.1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 This transmission line shall fulfill the following requirements: Antenna Line on PCB Requirements Characteristic Impedance 50Ohm Max Attenuation 0.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Keep the antenna line far away from the DE921 power supply lines. If EM noisy devices are present on the PCB hosting the DE921, such as fast switching ICs, take care of shielding them with a metal frame cover. If EM noisy devices are not present around the line, use of geometries like Micro strip or Grounded Coplanar Waveguide are preferred since they typically ensure less attenuation when compared to a Strip line having same length.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 6.1.2.1.1.2. Transmission line measurements HP8753E VNA (Full-2-port calibration) has been used in this measurement session. A calibrated coaxial cable has been soldered at the pad corresponding to RF output; a SMA connector has been soldered to the board in order to characterize the losses of the transmission line including the connector itself. During Return Loss / impedance measurements, the transmission line has been terminated to 50 Ω load.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Insertion Loss of G-CPW line plus SMA connector is shown below: 6.1.3. CDMA Antenna – Installation Guidelines Install the antenna in a place covered by the CDMA signal. If the device antenna in the application is located greater then 20cm from the human body and there are no co-located transmitters then the Telit FCC/IC approvals can be re-used by the end product. Antenna shall not be installed inside metal cases.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 6.2. GNSS Antenna Requirements The use of an active GNSS antenna is required to achieve better performance. 6.2.1. Combined GNSS Antenna The use of combined CDMA/GNSS antenna is not recommended. This solution could generate extremely poor GNSS reception and also the combined antenna requires an additional diplexer and adds a loss in the RF route. 6.2.2.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 NOTE: The external GNSS LNA and GNSS pre-Filter shall be required for GLONASS application. GNSS LNA requirement shall fulfill the following specifications. Frequency = 1565 ~ 1606MHz Power Gain|S21|2 = 14 ~ 17dB NF < 1dB GNSS pre-Filter requirement shall fulfill the following requirements. Source and Load Impedance = 50Ohm Insertion Loss (1575.42 ~ 1576.42MHz) = 1.4dB (Max) Insertion Loss (1565.42 ~ 1585.42MHz) = 2.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 An example of GNSS antenna supply circuit is shown in the following image: When using the Telit DE921, since there’s no antenna connector on the module, the antenna must be connected to the DE921 through the PCB with the antenna pad. In the case that the antenna is not directly connected at the antenna pad of the DE921, then a PCB line is required.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 6.2.4. Ensure that the antenna line impedance is 50ohm. Keep line on the PCB as short as possible to reduce the loss. Antenna line must have uniform characteristics, constant cross section, avoid meanders and abrupt curves. Keep one layer of the PCB used only for the Ground plane; if possible. Surround (on the sides, over and under) the antenna line on PCB with Ground.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 7. USB Port The DE921 module includes a Universal Serial Bus (USB) transceiver, which operates at USB high-speed (480Mbits/sec). It is compliant with the USB 2.0 specification and can be used for diagnostic monitoring, control and data transfers.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 8. Serial Port The serial ports on the Telit DE921 are the interface between the module and OEM hardware. 2 serial ports are available on the module: Modem Serial Port 1 (Main) Modem Serial Port 2 (Auxiliary) Several configurations can be designed for the serial port on the OEM hardware. The most common are: RS232 PC comport Microcontroller UART@1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 8.1. Modem Serial Port 1 Serial port 1 on the DE921 is a +1.8V UART with all 7 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. Pin Signal I/O Function Type F20 DCD O Data Carrier Detect 1.8V G21 RXD O Transmit line *see Note 1.8V J21 TXD I Receive line *see Note 1.8V K20 DTR I Data Terminal Ready 1.8V H20 DSR O Data Set Ready 1.8V E21 RTS I Request to Send 1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 NOTE: According to V.24, RX/TX signal names are referred to the application side. Therefore, on the DE921 side these signals are in the opposite direction: TXD on the application side will be connected to the receive line (here named TXD/ rx_uart) of the DE921 serial port and vice versa for RX. NOTE: High-speed UART supports up to 4Mbps. Please refer to the AT command User Guide in detail.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with lower levels on the RS232 side (EIA/TIA-562), allowing a lower voltage-multiplying ratio on the level translator. Note that the negative signal voltage must be less than 0V and hence some sort of level translation is always required. The simplest way to translate the levels and invert the signal is by using a single chip level translator.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 The RS232 serial port lines are usually connected to a DB9 connector with the following layout: Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 9. Audio Section Overview The DE921 module doesn’t support an analog audio interface and supports one Digital Audio bus. In order to develop an application including an Analog Audio it is necessary to add a dedicated CODEC on the Application design. For further information, please refer to the “Digital Voice Interface Application Note”. 9.1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 10. General Purpose I/O The general-purpose I/O pads can be configured to act in three different ways: Input Output Alternate function (internally controlled) Input pads can only be read and report the digital value (high or low) present on the pad at the read time. Output pads can only be written to set the value of the pad or queried.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 10.1. Logic Level Specification Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels. The following table shows the logic level specifications used in the DE921 interface circuits: Absolute Maximum Ratings -Not Functional Parameter Min Max Input level on any digital pin (CMOS 1.8) with respect to ground -0.3V 2.3V Operating Range - Interface levels (1.8V CMOS) Parameter Min Max Input high level 1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 NOTE: In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the module when it is powered OFF or during an ON/OFF transition. 10.3. Using a GPIO Pad as Output The GPIO pads, when used as outputs, can drive 1.8V CMOS digital devices or compatible hardware. When set as outputs, the pads have a push-pull output and therefore the pull-up resistor may be omitted. 10.4.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 10.5. Indication of Network Service Availability The LED pin status shows information on the network service availability and Call status. In the DE921 modules, the LED usually needs an external transistor to drive an external LED.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 10.6. VCOIN The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the digital part, allowing only RTC to be active when all the other parts of the device are off. To this power output a backup capacitor can be added in order to increase the RTC autonomy during power off of the battery. No devices must be powered from this pin.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 10.7. VCC_1V8 Power Output A regulated power supply output is provided in order to supply small devices from the module. This output is active when the module is ON and goes OFF when the module is shut down. The operating range characteristics of the supply are: Operating Range – power supply Parameter Output voltage Min Typical Max 1.77V 1.8V 1.83V 200mA Output current Output bypass capacitor (Inside the module) 2.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 11. ADC section 11.1. ADC Converter 11.1.1. Description The on board ADC is 16-bit converter. It is able to read a voltage level in the range of 0 ~ 4.0 volts applied on the ADC pin input and store and convert it into 16 bit word. Parameter Min Max Units Input Voltage range 0 4.0 Volt AD conversion - 16 bits Resolution - < 10 mV Input Resistance 1 Mohm The DE921 provides two Analog to Digital Converters.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 12. Test Point These pins are needed in order to analyze DE921 on the application board. The signals of the DE921 are: PAD Signal I/O Function Type F6 TP1 Test Point TP F8 TP2 Test Point TP H8 TP3 Test Point TP F11 TP4 Test Point TP H11 TP5 Test Point TP F14 TP6 Test Point TP H14 TP7 Test Point TP F16 TP8 Test Point TP Reproduction forbidden without written authorization from Telit Communications S.p.A.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 13. Mounting the Module on your Board 13.1. General The DE921 has been designed in order to be compliant with a standard lead-free SMT process. 13.2. Module Finishing & Dimensions Top view Bottom view (Dimensions in mm) Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 13.3. Recommended foot print for the application 133 pins < Top View > In order to easily rework the DE921 it is suggested to consider having a 1.5 mm placement inhibit area around the module on the application. It is also suggested, as a common rule for an SMT component, to avoid having a mechanical part of the application in direct contact with the module. 13.4.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 13.5. Recommendations for PCB Pad Dimensions (mm) It is not recommended to place via or micro-via not covered by solder resist in an area of 0.3 mm around the pads unless it carries the same signal as the pad itself (see following figure). Description Solder resist opening A Diameter [mm] 1.9 Except for ANT and VBATT 2.3 1.6 2.0 Metal pad B Holes in pad are allowed only for blind holes and not for through holes.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 13.6. Solder Paste Solder Paste Lead free Sn/Ag/Cu We recommend using only “no clean” solder paste in order to avoid the cleaning of the modules after assembly. 13.6.1.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Profile Feature Pb-Free Assembly Peak Temperature (TP) 245 +0/-5℃ Time within 5℃ of actual Peak Temperature (tP) 10 ~30 seconds Ramp-down Rate 6 ℃/second max Time 25℃ to Peak Temperature 8 minutes max NOTE: All temperatures refer to topside of the package, measured on the package body surface. WARNING: The DE921 module withstands two reflow processes. Reproduction forbidden without written authorization from Telit Communications S.p.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 14. Packing System The DE921 modules are packaged on trays of TBD pieces each. These trays can be used in SMT processes for pick & place handling. 14.1. Reel The DE921 can be packaged on reels of TBD pieces each. See figure for module positioning into the carrier. 14.1.1. Carrier Tape Detail 14.1.2. Reel Detail 14.1.3. Packaging Detail Reproduction forbidden without written authorization from Telit Communications S.p.A.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 14.2. Moisture Sensibility The DE921 is a Moisture Sensitive Device level 3, in accordance with standard IPC/JEDEC J-STD-020, take care all the relatives requirements for using this kind of components. Moreover, the customer has to take care of the following conditions: a) Calculated shelf life in sealed bag: 12 months at <40°C and <90% relative humidity (RH).
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 15. Application Design Guide 15.1. Download and Debug Port One of the following options should be chosen in the design of host system in order to download or upgrade the Telit’s software and debug DE921 when DE921 is already mounted on a host system. Users who use both of UART and USB interfaces to communicate DE921 - Must implement a download method in a host system for upgrading DE921 when it’s mounted.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 16. Certifications and Conformity (Certifications et Conformité”) The DE921 is FCC/IC Approved as a module to be installed in other devices. This device should be used only for fixed and mobile applications and if the final product after integration is intended for portable use, a new application and FCC is required. Le DE921 est approuvé FCC/IC comme module à installer dans d'autres dispositifs.
DE910 Series Hardware User Guide 1vv0301183 Rev.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 Si l'antenne est co-situé ou opérant en conjonction avec tout autre antenne ou transmetteur puis tests FCC / IC supplémentaire peut être nécessaire.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 17. Safety Recommendations READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas: Where it can interfere with other electronic devices in environments such as hospitals, airports, aircrafts, etc. Where there is risk of explosion such as gasoline stations, oil refineries, etc.
DE910 Series Hardware User Guide 1vv0301183 Rev.1 – 2015-2-13 18. Document History Revision 1 Date 2015-2-13 Changes Draft Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
