manualshive.com logo in svg

Telit Wireless Solutions GC864-DUAL V2, Руководство пользователя по оборудованию

Поделиться
Скачать
Telit Wireless Solutions GC864-DUAL V2 Скачать руководство пользователя страница 32

 
 

 
 

 

GC864 Hardware User Guide 

1vv0300874 Rev.1 – 2010-03-29 

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved. 

 

Page 32 of 64 

 

6.2.

 

GSM Antenna 

–

 Installation Guidelines 

•

 

Install the antenna in a place covered by the GSM signal. 

•

 

The Antenna must be installed to provide a separation distance of at least 
20 cm from all persons and must not be co-located or operating in 
conjunction with any other antenna or transmitter; 

•

 

Antenna shall not be installed inside metal cases  

•

 

Antenna shall be installed also according Antenna manufacturer 
instructions. 

Содержание GC864-DUAL V2

Страница 1: ...GC864 QUAD V2 and GC864 DUAL V2 Hardware User Guide 1vv0300874 Rev 1 2010 03 29 ...

Страница 2: ...uide 1vv0300874 Rev 1 2010 03 29 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 2 of 64 APPLICABILITY TABLE PRODUCT GC864 QUAD V2 GC864 DUAL V2 GC864 QUAD V2 with SH ...

Страница 3: ...ury loss or damage of any kind incurred by use of or reliance upon the information Telit disclaims any and all responsibility for the application of the devices characterized in this document and notes that the application of the device must comply with the safety standards of the applicable country and where applicable with the relevant wiring rules Telit reserves the right to make modifications ...

Страница 4: ... 4 HARDWARE COMMANDS 17 4 1 TURNING ON THE GC864 QUAD V2 GC864 DUAL V2 17 4 2 TURNING OFF THE GC864 QUAD V2 GC864 DUAL V2 19 4 2 1 Hardware Unconditional Restart 20 5 POWER SUPPLY 22 5 1 POWER SUPPLY REQUIREMENTS 22 5 2 GENERAL DESIGN RULES 23 5 2 1 Electrical Design Guidelines 23 5 2 2 Thermal Design Guidelines 27 5 2 3 Power Supply PCB Layout Guidelines 28 5 2 4 Parameters for ATEX Applications ...

Страница 5: ... Description 50 1 1 1 Frequency Behavior 51 10 8 2 Power Supply Influence 51 10 8 3 Warning 51 10 8 4 Working Current Influence 52 10 9 USING THE TEMPERATURE MONITOR FUNCTION 52 10 9 1 Short Description 52 10 9 2 Allowed GPIO 52 10 10 INDICATION OF NETWORK SERVICE AVAILABILITY 53 10 11 RTC BYPASS OUT 54 10 12 DAC CONVERTER 55 10 12 1 Description 55 10 12 2 Enabling DAC 55 10 12 3 Low Pass Filter E...

Страница 6: ...eral contact technical support to report documentation errors and to order manuals contact Telit Technical Support Center TTSC at TS EMEA telit com TS NORTHAMERICA telit com TS LATINAMERICA telit com TS APAC telit com Alternatively use http www telit com en products technical support center contact php For detailed information about where you can buy the Telit modules or for recommendations on acc...

Страница 7: ...re Chapter 6 Power supply Power supply requirements and general design rules Chapter 7 Antenna The antenna connection and board layout design are the most important parts in the full product design Chapter 8 Logic Level specifications Specific values adopted in the implementation of logic levels for this module Chapter 9 Serial ports The serial port on the Telit GC864 is the core of the interface ...

Страница 8: ...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 YYYY MM DD 1 6 Related Documents Telit s GSM GPRS Family Software User Guide 1vv0300784 Audio settings application note 80000NT10007a Digital voice Interface Applicati...

Страница 9: ...rbidden without Telit Communications S p A written authorization All Rights Reserved Page 9 of 64 1 7 Document History R Re ev vi is si io on n D Da at te e C Ch ha an ng ge es s ISSUE 0 2010 01 25 Release First ISSUE 0 ISSUE 1 2010 03 29 Updated Par 4 1 Par 5 1 Par 6 1 ...

Страница 10: ...nt for properly developing your product with the Telit GC864 QUAD V2 GC864 DUAL V2 module For further hardware details that may not be explained in this document refer to the Telit GC864 QUAD V2 GC864 DUAL V2 Product Description document where all the hardware information is reported NOTICE EN The integration of the GSM GPRS GC864 QUAD V2 GC864 DUAL V2 cellular module within user application shall...

Страница 11: ...uction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 11 of 64 3 GC864 Mechanical Dimensions The Telit GC864 QUAD V2 GC864 DUAL V2 module overall dimensions are Length 36 2 mm Width 30 mm Thickness 3 2 mm Weight 4 8g ...

Страница 12: ...ev 1 2010 03 29 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 12 of 64 3 1 Mechanical View of Telit GC864 QUAD V2 with SIM Holder 3 2 GC864 QUAD V2 GC864 DUAL V2 Module Connections ...

Страница 13: ...O Handset earphone signal output phase Audio 13 MIC_HF AI Handsfree microphone input phase Audio 14 MIC_HF AI Handsfree microphone input phase Audio 15 MIC_MT AI Handset microphone signal input phase Audio 16 MIC_MT AI Handset microphone signal input phase Audio SIM Card Interface 18 1 SIMVCC External SIM signal Power supply for the SIM 1 8 3V 19 SIMRST O External SIM signal Reset 1 8 3V 20 SIMIO ...

Страница 14: ...nd Ground 49 PWRMON O Power ON Monitor CMOS 2 8V 53 ON OFF I Input command for switching power ON or OFF toggle command The pulse to be sent to the GC864 QUAD V2 GC864 DUAL V2 must be equal or greater than 1 second 47KΩ Pull up to VBATT 54 RESET I Reset input 55 VRTC AO VRTC Backup capacitor Power Telit GPIO DVI 36 DVI_CLK DVI_CLK Digital Voice Interface Clock CMOS 2 8V 59 TGPIO_04 TXCNTRL I O Tel...

Страница 15: ...erved 43 Reserved 44 Reserved 48 Reserved 50 Reserved 51 Reserved 52 Reserved 56 Reserved 57 Reserved 58 Reserved 60 Reserved 61 Reserved 62 Reserved 64 Reserved 69 Reserved 72 Reserved 75 Reserved 77 Reserved 79 Reserved 80 Reserved NOTE The GC864 QUAD V2 GC864 DUAL V2 Modules has one DVI ports on the system interface NOTE Reserved pins must not be connected NOTE RTS must be connected to the GND ...

Страница 16: ...Input for Request to send signal RTS from DTE 53 ON OFF Input command for switching power ON or OFF toggle command 54 RESET Reset input 23 RX_TRACE RX Data for debug monitor 24 TX_TRACE TX Data for debug monitor 47 SERVICE SERVICE connection 3 3 1 GC864 QUAD V2 GC864 DUAL V2 Antenna Connector The GC864 QUAD V2 GC864 DUAL V2 module is equipped with a 50 Ω RF connector from Murata GSC type P N MM932...

Страница 17: ...do it is TIP To check if the device has powered on the hardware line PWRMON must be monitored After 1000ms the line raised up the device could be considered powered on NOTE Do not use any pull up resistor on the ON line it is internally pulled up Using pull up resistor may bring to latch up problems on the GC864 QUAD V2 GC864 DUAL V2 power regulator and improper power on off of the module The line...

Страница 18: ...A written authorization All Rights Reserved Page 18 of 64 For example 1 Let us assume you need to drive the ON pad with a totem pole output of a 3 5 V microcontroller uP_OUT1 2 Let us assume you need to drive the ON pad directly with an ON OFF button A flow chart with proper turn on procedure is detailed below ...

Страница 19: ...by tying low pin ON Either ways the device issues a detach request to network informing that the device will not be reachable any more To turn OFF the GC864 via pin ON this must be tied low for at least 1000ms and then released The same circuitry and timing for the power on shall be used The device shuts down after the release of the ON pin The following flow chart shows the proper turnoff procedu...

Страница 20: ...rk or SIM responses To unconditionally Restart the GC864 QUAD V2 GC864 DUAL V2 the pad RESET must be tied low for at least 200 ms and then released The maximum current that can be drained from the RESET pad is 0 15 mA A simple circuit to do it is NOTE Do not use any pull up resistor on the RESET line nor any totem pole digital output Using pull up resistor may cause latch up problems on the GC864 ...

Страница 21: ...without Telit Communications S p A written authorization All Rights Reserved Page 21 of 64 In the following flow chart is detailed the proper restart procedure For example 1 Let us assume you need to drive the RESET pad with a totem pole output of a 3 5 V microcontroller uP_OUT2 ...

Страница 22: ...40 V 4 20 V Extended operating Voltage Range 3 22 V 4 50 V The GC864 QUAD V2 GC864 DUAL V2 power consumptions are GC864 QUAD V2 GC864 DUAL V2 Mode Average mA Mode description SWITCHED OFF Switched Off 62 uA Module supplied but Switched Off IDLE mode AT CFUN 1 19 0 Normal mode full functionality of the module AT CFUN 4 18 0 Disabled TX and RX module is not registered on the network 3 9 Paging Multi...

Страница 23: ...down as a consequence of the supply voltage drop TIP The power supply must be designed so that it is capable of a peak current output of at least 2 A TIP the supply voltage is directly measured between VBATT and GND pins It must stay within the Wide Supply Voltage tolerant range including any drop voltage and overshoot voltage during the slot tx for example NOTE The Operating Voltage Range MUST ne...

Страница 24: ...use of the low drop out requirements When using a linear regulator a proper heat sink shall be provided in order to dissipate the power generated A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks close to the GC864 QUAD V2 GC864 DUAL V2 a 100μF tantalum capacitor is usually suited Make sure the low ESR capacitor on the power supply output...

Страница 25: ... to the current peaks absorption In any case the frequency and switching design selection is related to the application to be developed due to the fact that the switching frequency could also generate EMC interferences As far as car PB battery the input voltage can rise up to 15 8V This must be kept in mind when choosing components all components in the power supply must withstand this voltage A B...

Страница 26: ...0300874 Rev 1 2010 03 29 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 26 of 64 An example of switching regulator with 12V input is in the schematic below split in 2 parts ...

Страница 27: ...d damage it USE ONLY Li Ion battery types A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks A 100μF tantalum capacitor is typically used Make sure the low ESR capacitor usually a tantalum one is rated at least 10V A protection diode can be inserted close to the power input in order to save the GC864 QUAD V2 GC864 DUAL V2 from power polari...

Страница 28: ...s rarely a concern and the simple ground plane where the power supply chip is placed grants a good thermal condition to avoid overheating as well As far as the heat generated by the GC864 QUAD V2 GC864 DUAL V2 you can consider it to be during transmissions of 1W max during CSD VOICE calls and 2W max during class10 GPRS upload This generated heat will be mostly conducted to the ground plane under t...

Страница 29: ...the 2A current peaks are absorbed This is for the same reason as previous point Try to keep this trace as short as possible The PCB traces connecting the Switching output to the inductor and the switching diode must be kept as short as possible by placing the inductor and the diode very close to the power switching IC only for switching power supply This is done in order to reduce the radiated fie...

Страница 30: ... Communications S p A written authorization All Rights Reserved Page 30 of 64 In abnormal conditions the maximum RF output power may be up to 34 dBm For this particular application we recommend the customer to involve TTSC Telit Technical Support Center in the design phase of the application ...

Страница 31: ... 80 MHz in GSM900 170 MHz in DCS and 140 MHz PCS band Bandwidth for GC864 DUAL V2 80 MHz in GSM900 and 170 MHz in DCS Gain Gain 1 4dBi in GSM 850 900 and 3 0dBi DCS PCS Impedance 50 Ω Input power 2 W peak power VSWR absolute max 10 1 VSWR recommended 2 1 Furthermore if the device is developed for the US market and or Canada market it shall comply to the FCC and or IC approval requirements This dev...

Страница 32: ...lation Guidelines Install the antenna in a place covered by the GSM signal The Antenna must be installed to provide a separation distance of at least 20 cm from all persons and must not be co located or operating in conjunction with any other antenna or transmitter Antenna shall not be installed inside metal cases Antenna shall be installed also according Antenna manufacturer instructions ...

Страница 33: ...interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any digital pin when on 0 3V 3 1V Input voltage on analog pins when on 0 3V 3 0 V Operating Range Interface Levels 2 8V CMOS Level Min Max Input high level 2 1V 3 1V Input low level 0V 0 5V Output high level 2 2V 3 0V Output low level 0V 0 35V For 1 8V signals Operating Range Interface Levels 1 8V CMOS Leve...

Страница 34: ...l must not be used to normally shutting down the device but only as an emergency exit in the rare case the device remains stuck waiting for some network response The RESET is internally controlled on start up to achieve always a proper power on reset sequence so there is no need to control this pin on start up It may only be used to reset a device already on that is not responding to any command N...

Страница 35: ...port microcontroller UART 2 8V 3V Universal Asynchronous Receive Transmit microcontroller UART 5V or other voltages different from 2 8V Depending from the type of serial port on the OEM hardware a level translator circuit may be needed to make the system work The only configuration that does not need a level translation is the 2 8V UART The serial port on the GC864 QUAD V2 GC864 DUAL V2 is a 2 8V ...

Страница 36: ...f the GC864 QUAD V2 GC864 DUAL V2 UART 4 DTR dtr_uart 29 Data Terminal Ready Input to the GC864 QUAD V2 GC864 DUAL V2 that controls the DTE READY condition 5 GND 5 6 7 Ground ground 6 DSR dsr_uart 27 Data Set Ready Output from the GC864 QUAD V2 GC864 DUAL V2 that indicates the module is ready 7 RTS rts_uart 31 Request to Send Input to the GC864 QUAD V2 GC864 DUAL V2 that controls the Hardware flow...

Страница 37: ...tion is always required The simplest way to translate the levels and invert the signal is by using a single chip level translator There are a multitude of them differing in the number of driver and receiver and in the levels be sure to get a true RS232 level translator not a RS485 or other standards By convention the driver is the level translator from the 0 3V UART level to the RS232 level while ...

Страница 38: ... V2 GC864 DUAL V2 shall be available for translation into RS232 and either it is controlling device shall be placed into tristate disconnected or as a gateway for the serial data when module reprogramming occurs Only RXD TXD GND SERVICE and the On off module turn on pad are required to the reprogramming of the module the other lines are unused All applicator shall include in their design such a wa...

Страница 39: ...onnector with the following layout 8 3 5V UART Level Translation If the OEM application uses a microcontroller with a serial port UART that works at a voltage different from 2 8 3V then a circuitry has to be provided to adapt the different levels of the two set of signals As for the RS232 translation there are a multitude of single chip translators For example a possible translator circuit for a 5...

Страница 40: ...s_uart input lines are not pulled up internally so an external pull up resistor of 47KΩ may be required Care must be taken to avoid latch up on the GC864 QUAD V2 GC864 DUAL V2 and the use of this output line to power electronic devices shall be avoided especially for devices that generate spikes and noise such as switching level translators micro controllers failure in any of these condition can s...

Страница 41: ...nal importance In other words this distinction is not necessary being the performances between the two blocks like the same Only if the customer needs higher output power to drive the speaker he needs to adopt the Aduio2 Section HF Otherwise the choice could be done in order to overcome the PCB design difficulties For these reasons we have not changed the HS and HF acronyms keeping them in the Sof...

Страница 42: ...as MICP2 100nF 100nF Single ended 16 Balanced xgaffull skd Ear MT Ear MT MICP1 MICN1 Mic MT Mic MT Ear HF Mic HF Mic HF LOUD1 Ear HF LOUD2 HS Earpiece HF Speaker Fully Differential Audio Amplifier Fully Differential Audio Amplifier HS Microphone HF Microphone AUDIO 2 SECTION AUDIO 1 SECTION Baseband Audio Front End EP P1 EP N1 Single ended Bias Balanced 8 Balanced GC864 QUAD V2 GC864 DUAL V2 Audio...

Страница 43: ...put Lines Characteristics MIC_MT and MIC_HF differential microphone paths Line Coupling AC Line Type Balanced Differential input voltage 1 03Vpp Mic G 0dB Gain steps 7 Gain increment 6dB per step Coupling capacitor 100nF Differential input resistance 50KΩ Input capacitance 10pF WARNING AC means that the signals from the microphone have to be connected to input lines of the module through capacitor...

Страница 44: ... and to get the maximum power output from the device low resistance tracks WARNING The loads are directly connected to the amplifier outputs when in Differential configuration through a capacitor when in Single Ended configuration Using a Single Ended configuration the unused output line must be left open Not respecting this constraint the output stage will be damaged TIP Remember that there are s...

Страница 45: ...ce 16 Ω 12dBFS internal output resistance 4Ω typical signal bandwidth 150 4000 Hz 3 dB maximal full scale differential output voltage 3 7 Vpp typical Rload open circuit differential output voltage 925mVpp Rload 16Ω 12dBFS volume increment 2 dB per step volume steps 10 EAR_HF Output Lines line coupling AC single ended DC differential output load resistance 8 Ω signal bandwidth 150 4000 Hz 3 dB maxi...

Страница 46: ... current Default state ON_OFF state During Reset state Note 70 TGPIO_01 I O GPIO01 Configurable GPIO CMOS 2 8V 1uA 1mA INPUT 0 0 74 TGPIO_02 JDR I O GPIO02 Configurable GPIO CMOS 2 8V 1uA 1mA INPUT 0 0 Alternate function JDR 66 TGPIO_03 I O GPIO03 Configurable GPIO CMOS 2 8V 1uA 1mA INPUT 0 0 59 TGPIO_04 TXCNTRL I O GPIO04 Configurable GPIO CMOS 2 8V 1uA 1mA INPUT 0 0 Alternate function RF Transmi...

Страница 47: ...supports all three modes and can be input output alarm output Alternate function GPIO7 supports all three modes and can be input output buzzer output Alternate function 10 1 GPIO Logic Levels Where not specifically stated all the interface circuits work at 2 8V CMOS logic levels The following tables show the logic level specifications used in the GC864 QUAD V2 GC864 DUAL V2 interface circuits Abso...

Страница 48: ...tion 10 3 Using a GPIO Pad as OUTPUT The GPIO pads when used as outputs can drive 2 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 The illustration below shows the base circuit of a push pull stage 10 4 Using the RF Transmission Control GPIO4 The GPIO4 pin when configured as RF Transmission Contr...

Страница 49: ...ions and completely turn off either the application and the GC864 QUAD V2 GC864 DUAL V2 during sleep periods dramatically reducing the sleep consumption to few μA In battery powered devices this feature will greatly improve the autonomy of the device NOTE During RESET the line is set to HIGH logic level 10 7 Using the Buzzer Output GPIO7 As Alternate Function the GPIO7 is controlled by the firmwar...

Страница 50: ...ust be provided its characteristics depend on the Buzzer and for them refer to your buzzer vendor 10 8 Magnetic Buzzer Concepts 10 8 1 Short Description A magnetic Buzzer is a sound generating device with a coil located in the magnetic circuit consisting of a permanent magnet an iron core a high permeable metal disk and a vibrating diaphragm Drawing of the Magnetic Buzzer TR1 BCR141W TR2 SMBT2907A...

Страница 51: ... modify the waveform e g from square to sinus the frequency response will change 10 8 2 Power Supply Influence Applying a signal whose amplitude is different from that suggested by manufacturer the performance change following the rule if resonance frequency fo increases amplitude decreases Because of resonance frequency depends from acoustic design lowering the amplitude of the driving signal the...

Страница 52: ...mmand on AT Interface guide it raise to High Logic level a GPIO when the maximum temperature is reached 10 9 2 Allowed GPIO The AT TEMPMON set command could be used with one of the following GPIO Signal Function Type Input output current Note TGPIO_01 GPIO01 Configurable GPIO CMOS 2 8V 1μA 1mA TGPIO_03 GPIO03 Configurable GPIO CMOS 2 8V 1μA 1mA TGPIO_08 GPIO08 Configurable GPIO CMOS 2 8V 1μA 1mA T...

Страница 53: ...availability and Call status In the GC864 QUAD V2 GC864 DUAL V2 modules the STAT_LED usually needs an external transistor to drive an external LED Therefore the status indicated in the following table is reversed with respect to the pin status LED status Device Status Permanently off Device off Fast blinking Period 1s Ton 0 5s Net search Not registered turning off Slow blinking Period 3s Ton 0 3s ...

Страница 54: ... 10 11 RTC Bypass Out The VRTC pin brings out the Real Time Clock supply which is separate from the rest of the digital part allowing having only RTC going on 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 ...

Страница 55: ...sary Min Max Units Voltage range filtered 0 2 6 Volt Range 0 1023 Steps The precision is 10 bits so if we consider that the maximum voltage is 2V the integrated voltage could be calculated with the following formula Integrated output voltage 2 value 1023 DAC_OUT line must be integrated for example with a low band pass filter in order to obtain an analog voltage 10 12 2 Enabling DAC The AT command ...

Страница 56: ...in Signal I O Function Internal Pull up Type ADC Converters 37 ADC_IN1 AI Analog Digital converter input A D 38 ADC_IN2 AI Analog Digital converter input A D 39 ADC_IN3 AI Analog Digital converter input A D The GC864 QUAD V2 GC864 DUAL V2 module provides three Analog to Digital Converter The on board A D are 11 bit converter They are able to read a voltage level in the range of 0 2 volts applied o...

Страница 57: ...nications S p A written authorization All Rights Reserved Page 57 of 64 10 13 2 Using ADC Converter The AT command below is available to use the ADC function AT ADC 1 2 The read value is expressed in mV Refer to SW User Guide or AT Commands Reference Guide for the full description of this function ...

Страница 58: ...ation All Rights Reserved Page 58 of 64 11 Assembly the GC864 QUAD V2 GC864 DUAL V2 on the Board The position of the Molex board to board connector and the pin 1 are shown in the following picture NOTE The metal tabs present on GC864 QUAD V2 GC864 DUAL V2 must be connected to GND This module could not be processed with a reflow ...

Страница 59: ...ding by the customer application these pads include but are not limited to the following signals Pin Signal I O Function Internal Pull up Type ADC Converters 5 6 7 46 GND Ground Ground 1 2 3 4 VBATT Main power supply Power 25 C103 TXD I Serial data input TXD from DTE CMOS 2 8V 26 C104 RXD O Serial data output RXD to DTE CMOS 2 8V 53 ON OFF I Input command for switching power ON or OFF toggle comma...

Страница 60: ...t Telit Communications S p A written authorization All Rights Reserved Page 60 of 64 12 Packing System The Telit GC864 QUAD V2 GC864 DUAL V2 are packaged on trays of 20 pieces each The size of the tray is 329 x 176mm WARNING These trays can withstand at the maximum temperature of 65 C ...

Страница 61: ...rective In all cases the assessment of the final product must be made against the Essential requirements of the R TTE Directive Articles 3 1 a and b Safety and EMC respectively and any relevant Article 3 3 requirements This Hardware User Guide contains all the information you may need for developing a product meeting the R TTE Directive Furthermore the GC864 QUAD V2 module is FCC Approved as modul...

Страница 62: ...n conjunction with any other antenna or transmitter The system antenna s used for this module must not exceed 1 4dBi 850MHz and 3 0dBi 1900MHz for mobile and fixed or mobile operating configurations Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance Manufacturers of mobile fixed or portable devices...

Страница 63: ...e source and the wiring has to be conforming to the security and fire prevention regulations The product has to be handled with care avoiding any contact with the pins because electrostatic discharges may damage the product itself Same cautions have to be taken for the SIM checking carefully the instruction for its use Do not insert or remove the SIM when the product is in power saving mode The sy...

Страница 64: ...ectives for the electronic equipments introduced on the market All the relevant information are available on the European Community website http europa eu int comm enterprise rtte dir99 5 htm The text of the Directive 99 05 regarding telecommunication equipments is available while the applicable Directives Low Voltage and EMC are available at http europa eu int comm enterprise electr_equipment ind...

Отзывы:

Нет отзывов

Бренды по названию

Популярные бренды

Загрузить еще бренды