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17

MTX-GTW II | 2017/12

MTX © by MATRIX ELECTRONICA S.L.U.

mtxm2m.com | [email protected]

The following table show the configuration of the DB9 Male (DTE) connector of the COM2 interface. 

PIN

SIGNAL

TYPE

REMARK

2

RXD1

I

Receive Data

3

TXD1

O

Transmit Data

4

DTR_PWR

O

4.3 V or GND OUTPUT

5

GND

P

GROUND

7

RTS1

O

Request to Send

8

CTS1

I

Clear to Send

9

PWR_AUX

O

DTR_PWR or OPEN

 

PIN 1

COM1 (female) and COM2 (male) connectors are joined in a combo 2xDB9 connector. 

Содержание MTX-GTW II

Страница 1: ...USERGUIDE HARDWARE MTX GTW II SMART SOLUTIONS FOR A CHANGING WORLD WeAreConnectivity www mtxm2m com ...

Страница 2: ...ity 10 1 1 Block Diagram 10 1 2 Technical Data Electronics 10 1 2 1 External Interfaces 10 1 2 2 Internal Interfaces 11 1 2 3 User s Interfaces 11 ELECTRONIC SPECIFICATIONS 12 1 External Interfaces 12 1 1 Function Specification 12 1 1 1 USB OTG 12 1 1 2 Ethernet 13 1 1 3 COM1 14 1 1 4 COM2 15 1 1 5 Terminal block connector muxing 18 1 1 5 1 RS485 422 19 1 1 5 2 Outputs 20 1 1 5 2 1 Output characte...

Страница 3: ...rion Radio Module 30 4 2 EEPROM 30 4 3 GPIO Expander 30 4 4 RTC 31 MECHANIC SPECIFICATIONS 32 1 Construction 32 1 1 MTX GTW II Top View 32 1 2 MTX GTW II Enclosure Drawings 33 1 3 MTX GTW II DIN Rail 35 2 Requirements for the Superior System 37 2 1 Protection Against External Effects 37 2 2 Thermal Management 37 SAFETY REQUIREMENTS AND PROTECTION REGULATIONS 38 1 Safety Instructions 38 2 General P...

Страница 4: ...FORMIDAD SPANISH 49 1 Estándares de homologación europea 49 2 Aprobación PTCRB 50 3 Conformidad FCC 51 3 1 Tasa de absorción específica SAR 51 4 Certificación AT T 53 REGULATORY AND TYPE APPROVAL INFORMATION 54 1 Directives and Standards 54 2 SAR Requirements Specific to Portable Mobiles 57 3 SELV Requirements 58 ROHS STATEMENT 59 DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT ESCRIPTION 60 S...

Страница 5: ...e liable for any consequential incidental direct indirect punitive or other damages whatever including without limitation damages for loss of business profits business interruption loss of business information or data or other pecuniary loss arising out the use of or inability to use the documentation and or product even if Matrix Electronica S L U has been advised of the possibility of such damag...

Страница 6: ...6 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es REVISION INFORMATION REVISION DATE AUTHOR CHANGES 1 0 2018 01 JAM First draft ...

Страница 7: ...on the MTX GTW II 1 Product Label The label fixed to the bottom of a MTX device comprises the following information MODEL MTX Router Titan II P N 199802164 HR 1 01 FW 3 00 3 21 1744 IMEI 357042060418895 MAC 00D0934046F2 Pb 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 MTX logo 2 Product name model 3 Part number ordering code 4 Hardware and firmware versions 5 Year week of fabrication 6 IMEI number 7 MAC addr...

Страница 8: ...warranties of merchantability or fitness for any particular purpose with regard to any of the foregoing Matrix Electronica assumes no liability for any damages incurred directly or indirectly from any technical or typographical errors or omissions contained herein or for discrepancies between the product and the user guide In no event shall Matrix Electronica be liable for any incidental consequen...

Страница 9: ...9 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es REFERENCES iMX6UL Freescale Reference Manual ...

Страница 10: ...SIM RF COM 2 COM 1 I2C GPIO GPIO COM 3 COM 4 GPIO 3V3 5V GPIO 8 30V GPIO USB Illustration 1 MTX GTW II block diagram 1 2 Technical Data Electronics The interfaces and system components listed in the following are implemented on the MTX GTW II Due to the fact that the board can be installed in a casing the interfaces are divided into external and internal interfaces 1 2 1 External Interfaces 1x USB...

Страница 11: ... MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es 1 2 2 Internal Interfaces 1x iMX6UL board 1x micro SIM Card 1x micro SD Card 1x WiFi b g n depending on models 1x RF card 1 2 3 User s Interfaces 4x status LEDs 6x jumpers ...

Страница 12: ... MTX GTW II front view 1 1 Function Specification 1 1 1 USB OTG The USB OTG interface of the iMX6UL IND IOT USB0 is offered as Micro USB AB type iMX6UL TPS2041 MICRO USB Type of media USB OTG 2 0 Hi Speed 5V bus voltage limited to 500mA Interface on module USB OTG Signal characteristic Compatible with the Universal Serial Bus Specification REV 2 0 ...

Страница 13: ...o USB AB 1 1 2 Ethernet The IMX6UL IND IOT directly drives the Ethernet interface The SMSC LAN8720Ai is used as a PHY iMX6UL RJ45 LED Ethernet LED Ethernet LAN8 720Ai Type of media 10 100 Mbit Signal characteristic Compatible with the IEEE 802 3 standard Status LEDs 2 Modes MDI Auto MDIX Interface on module RMII ENET0 Description Right angle RJ45 jack ...

Страница 14: ... Up to 250Kbit s Interface on module AUART3 Handshake RTS CTS or XON XONFF ESD protection 15kV human body model The pin 6 of DB9 connector is used like a extra digital input signal active low This signal is routed to GPIO expander chip in order to read its state from iMX6UL IND IOT using I2C bus The following figure shows simple input schematic GPIO IN RS 1 DB9 PIN6 Ri113 3V3 100K Di13 Ri112 1K BA...

Страница 15: ...f the COM1 interface PIN SIGNAL TYPE REMARK 2 TXD1 O Transmit Data 3 RXD1 I Receive Data 5 GND P GROUND 6 IN_RS I Not standard extra input 7 CTS1 I Clear to Send 8 RTS1 O Request to Send PIN 1 1 1 4 COM2 The UART5 interface of the iMX6UL IND IOT drives the RS232 interface of the MTX GTW II by default The ST ST3232EBDR is used as a driver iMX6UL DB9 M COM2 ST3232 ...

Страница 16: ...or can be grounded or connected to 5V throught a protection diode The signal that controls pin 4 state is routed to GPIO expander chip in order to set its state from iMX6UL IND IOT using I2C bus The following figure shows pin 4 output schematic GPIO IN RS 0 5V DB CTS0 DB TXD0 DB RTS0 DB RXD0 Rc111 2K2 2K2 Rc106 DMP3099L 7 Qc10 BSS138W Qc9 Dc12 SS16 DB9 X2 5B 9B 4B 8B 3B 7B 2B 6B 1B S D G 2 3 A K D...

Страница 17: ...ion of the DB9 Male DTE connector of the COM2 interface PIN SIGNAL TYPE REMARK 2 RXD1 I Receive Data 3 TXD1 O Transmit Data 4 DTR_PWR O 4 3 V or GND OUTPUT 5 GND P GROUND 7 RTS1 O Request to Send 8 CTS1 I Clear to Send 9 PWR_AUX O DTR_PWR or OPEN PIN 1 COM1 female and COM2 male connectors are joined in a combo 2xDB9 connector ...

Страница 18: ... 3 D IO RS485 positive line Output common relay diode 4 D IO RS485 negative line IO 4 5 1 IO IO 1 RS422 line Z 6 2 IO IO 2 RS422 line Y 7 3 IO IO 3 Output common relay diode Phoenix 1843842 right angle 7 ways 3 5 mm terminal w screws The default assembly doesn t include the secondary function of pins 3 4 5 and 6 Ask our sales team about custom assemblies Slide switch SWIO1 select between primary a...

Страница 19: ...nsceiver for RS485 In case of RS422 interface two ST3485EBDR transceivers are used iMX6UL ST3485 ST3485 TERMINAL Jp4 3 4 TERMINAL Jp4 5 6 Transfer rate Up to 1 5Mbit s RS485 half duplex RS422 full duplex Interface on module UART2 Handshake CTS used for clearing the transmission direction ESD protection 15kV human body model See configuration of the RS485 422 power and IO Pluggable Terminals in IO ...

Страница 20: ...limit IR5 Dprot Drelay 3V3 3V3 GPIO IN 1 GPIO IN 1 Ri38 1K D13 TCMD4000 Ui9A Ri30 100K 1 2 16 15 IO1 1 1 5 2 1 Output characteristics Max voltage 30 V Current limiter 350 mA Others diode for de energize inductive loads In order to control the chosen output the following iMX6UL IND IOT GPIOs are available OUTPUT iMX6UL IND IOT INTERNAL GPIO REFERENCE OUT1 gpio4_27 OUT2 gpio4_28 OUT3 gpio_9 OUT4 4th...

Страница 21: ... IND IOT GPIOs are available OUTPUT iMX6UL IND IOT INTERNAL GPIO REFERENCE IN1 gpio4_25 IN2 gpio4_26 IN3 gpio1_5 IN4 3th IO of I2C GPIO expander chip 1 1 6 Power Supply For protective and EMC reasons the supply input of the MTX GTW II is designed very robustly PLUG CONNECTOR REVERSE POLARITY LINE FILTER SWITCHING REGULATOR 5V SWITCHING REGULATOR 4 1V PARAMETER MIN TYP MAX UNIT DC Input Voltage 8 2...

Страница 22: ...be used in function of the MTX GTW II assembly options MODEL ANTENNA 1 ANTENNA 2 ANTENNA 3 MTX GTW II 3G 3G X X MTX GTW II 3G GPS 3G GPS X MTX GTW II V2 X X X MTX GTW II 4G 3G 4G 3G 4G X The default assembly of MTX GTW II has no RF internal interface When we use an MTX GTW II custom assembly additional antenna connectors may be appended in function of RF modules added ...

Страница 23: ...SIM The Cinterion radio module has a SIM card interface that connect it to SIM holders placed in PCB The SIM holder named Jm11 is a internal interface because is not possible to access it whithout open the MTX GTW II case The default MTX GTW II assembly includes Jm7 instead of Jm11 This SIM holder can be accesed from cutoff in MTX GTW II case frontal panel Both SIM holders are push push model 2 3 ...

Страница 24: ...I can be ordered with an iMX6UL IOT SBC This SBC includes RTL8188ETV WiFi module The following table shows the key features of this module FEATURE REMARK IEEE 802 11 b g n Single 2 4GHz band Symbol rate up to 150Mbps Encryption WPA and WPA2 Operation mode Supports Client and Access Point Module interface USB ...

Страница 25: ...rf1 PIN SIGNAL TYPE REMARK 1 UART6_RX I UART6 Receive Data 2 UART6_TX O UART6 Transmit Data 3 ENABLE_THIS IO Gpio1_18 4 ENABLE_UP IO Gpio1_15 5 IRQ IO Gpio1_28 6 GND P Ground 7 3V OUT O LED 8 VCC P 5VDC 9 SPICS SPI Chip Select 10 SPIDI SPI Data In 11 UART6_CTS I UART6 Clear to Send 12 UART6_RTS O UART6 Request to Send 13 I2C_SCL SPICLK O I2C Clock signal SPI Clock 14 I2C_SDA SPIDO I O I2C Data sig...

Страница 26: ...d connector is not included in the MTX GTW ROUTER II default assembly because it is implemented using the same pins that UART 5 that is used in the default assembly as COM2 2 5 1 Wavenis Card The CNrf1 connector has been designed in order to allow the connection of one Elster Honeywell Wavenis card module The following table shows the key features of this module FEATURE DESCRIPTION Frequency 868 4...

Страница 27: ...nnector also supports the connection of the Matrix Electronica MOD RF module The following table shows the key features of this module FEATURE DESCRIPTION RF Technology Bluetooth 2 1 Bluegiga WT12 Bluetooth 4 0 Bluegiga BLE112 RF 2 4GHz Amber 8426 868 WMBUS 2 5 3 Other modules There are some modules with que same mechanical format and interface that has been developed by Matrix Ask Matrix for new ...

Страница 28: ... about different status conditions The following table shows the different LED indications LED STATUS REMARK On when power good 1 General purpose indicator 1 2 General purpose indicator 2 3 General purpose indicator 3 3 2 Jumper The MTX GTW II has two shunt banks for configuration purposes The following tables show information about the signals connected to each one ...

Страница 29: ... 12 7 3 13 14 14 15 The pin muxing previously showed is related to the default assembly The assembly of the MTX GTW II allows change Pin 4 first function OUPUT_4 instead RS485 negative line Pin 5 fisrt function RS422 Z pin instead OUTPUT_1 Pin 5 fisrt function RS422 Y pin instead OUTPUT_2 Jc18 is used to join pins 4 and 9 of COM2 connector The iMX6UL IND IOT SBC has a boot configuration SW named S...

Страница 30: ...USB high speed interface 4 2 EEPROM A 2Kbit EEPROM Atmel AT24MAC402 XHM T is on the MTX GTW II carrier board The EEPROM is controlled via the processor s I2C bus 1 Writing protection WP of the EEPROM is not available The base addresses can be taken from the following table The first one is for memory bank and the second one is for MAC address read This memory provides the MAC address of the ethern...

Страница 31: ...txm2m com gsmsupport matrix es 4 4 RTC A DS1337 RTC module is on the MTX GTW II board The RTC is supplied by a super capacitor in order to maintain the information when the main supply be removed I2C BUS POSITION DEVICE ADDRESS 1 MTX GTW II RTC DS1337 0x68 ...

Страница 32: ...32 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es MECHANIC SPECIFICATIONS 1 Construction PCB outlines 1 1 MTX GTW II Top View ...

Страница 33: ...33 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es 1 2 MTX GTW II Enclosure Drawings ...

Страница 34: ...34 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es ...

Страница 35: ...35 MTX GTW II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es 1 3 MTX GTW II DIN Rail DIN rail with four screws DIN rail with two screws DIN rail with plastic handles ...

Страница 36: ...xm2m com gsmsupport matrix es DIN rail with plastic handles horizontal Wall mount MTX T ACC wall mounting plate Titan II GTW II BGS2T 000427108 Packaging Individual box 5 5cm high x 12cm wide x 16cm long 0 37Kg 60 boxes 55cm high x 35cm wide x 35cm long 23Kg ...

Страница 37: ...e protection has to be guaranteed by the surrounding system 2 2 Thermal Management The main heat sources are the iMX6UL IND IOT module and the Cinterion radio module The iMX6UL IND IOT module power consumption is 1 25 W The Cinterion radio module power consumption during idle communication state is lower than 0 150 mW The Cinterion module can increase its power consumption up to 3W during data tra...

Страница 38: ...tals airports or planes Never use the device at a gas station refuelling point blasting area or in any other environment where explosives may be present Operating the device close to other electronic devices such as antennas television sets and radios may cause electromagnetic interference This product is intended to be used with the antenna or other radiating element at least 20cm away from any p...

Страница 39: ...e warranty The MTX GTW II terminal must not be installed nor located in areas where the surface temperature of the plastic case could exceed 85 C In order to provide strain relief and to avoid transmitting excessive vibration to the device during installation all cables connected to the MTX GTW II terminal must be secured or clamped immediately adjacent to the device s connectors To protect the po...

Страница 40: ...ges When the SIM card hatch is opened the SIM card connectors lie exposed under the SIM card holder Caution Do not touch these connectors If you do you may release an electrical discharge that could damage the modem or the SIM card When designing your application the SIM card s accessibility should be taken into account We always recommend that you have the SIM card protected by a PIN code This wi...

Страница 41: ... antenna of the modem emits radio frequency energy To avoid EMI electromagnetic interference you must determine whether the application itself or equipment in the application s proximity needs further protection against radio emission and the disturbances it might cause Protection is secured either by shielding the surrounding electronics or by moving the antenna away from the electronics and the ...

Страница 42: ...regardless of age and health and to account for any variations in measurements Specific Absorption Rate SAR is the unit of measurement for the amount of radio frequency energy absorbed by the body when using a transceiver The SAR value is determined at the highest certified power level in laboratory conditions but the actual SAR level of the transceiver while operating can be well below this value...

Страница 43: ... pacemakers hearing aids and certain other implanted equipment If a minimum distance of 15 cm 6 inches is maintained between the MTX GTW II modem radiating antenna and a pacemaker the risk of interference is limited If the user s application is likely to be situated in the vicinity of personnel a suitable warning should be contained in the equipment manual to this effect ...

Страница 44: ...ion Legislation RED Directive 2014 53 EU and R TTE Directive 99 5 EC The following harmonized standards and or other normative documents were applied are labeled with the CE conformity mark EMC art 3 1 b EN 301 489 1 V2 2 0 EN 301 489 52 V1 1 0 EN 301 489 3 V2 1 1 RADIO SPECTRUM art 3 2 EN 301 511 V12 5 1 EN 301 908 1 V11 1 1 EN 301 908 2 V11 1 1 EN 300 440 V2 1 1 SAFETY art 3 1 a EN 60950 1 2006 ...

Страница 45: ...ket MTX GTW II is now PTCRB Certified Request 68541 Manufacturer Matrix Electrónica Model MTX GTW II Technologies and Frequency Bands GSM 850 900 1800 1900 UMTS FDD Band I Band II Band V Band VIII FCCID QIPEHS6 Industry Canada 7830A EHS6 IMEI TAC 35888405 Hardware Version B2 Software Version 01 000 SVN 08 NAPRD 03 Version GSM Test 5 15 OTA Performance Test 5 15 ...

Страница 46: ...S6 is marketed without a defined antenna The Maximum Antenna Gain when using indoor antennas depends on the distance from the antenna to any nearby persons when in normal operation It should not exceed the values shown on the table below According to the limit in 47 CFR 1 1310 we get the value of the maximum antenna gain as follows The maximum measured power output in the 850 MHz band is 1866 38 m...

Страница 47: ...12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es Solving for G the maximum antenna gain is BAND DISTANCE MAXIMUM GAIN IN dBi 850MHz 20cm 1 7669 850MHz 50cm 9 7257 1900MHz 20cm 7 1227 1900MHz 50cm 15 0815 ...

Страница 48: ...AT T s wireless network Baseline regulatory confirmation RF testing against components in the wireless AT T network Network selection testing The MTX GTW II device was not observed to cause any adverse problems to the AT T network when activated and used in the lab The MTX GTW II is certified for both CS and PS services as applicable Any change to the mode of operation invalidates the AT T Certifi...

Страница 49: ...laración están están conformes con la Directiva RED 2014 53 EU EMC art 3 1 b EN 301 489 1 V2 2 0 EN 301 489 52 V1 1 0 EN 301 489 3 V2 1 1 RADIO SPECTRUM art 3 2 EN 301 511 V12 5 1 EN 301 908 1 V11 1 1 EN 301 908 2 V11 1 1 EN 300 440 V2 1 1 SAFETY art 3 1 a EN 60950 1 2006 A11 2009 A1 2010 A12 2011 A2 2013 RF SAFETY EN62311 2008 Estos estándares armonizados permiten etiquetar al producto con el mar...

Страница 50: ...ano MTX GTW II tiene la certificación PTCRB Solicitud 68541 Fabricante Matrix Electrónica Modelo MTX GTW II Tecnologías y bandas de frecuencias GSM 850 900 1800 1900 UMTS FDD Band I Band II Band V Band VIII FCCID QIPEHS6 Industry Canada 7830A EHS6 IMEI TAC 35888405 Version Hardware B2 Version Software 01 000 SVN 08 NAPRD 03 Version GSM Test 5 15 OTA Performance Test 5 1 ...

Страница 51: ...pecífica SAR El módulo Cinterion EHS6 es comercializado sin una antena definida La ganancia máxima de antena usando antenas de interior depende de la distancia de esta a las personas cercanas y en condiciones normales no debe sobrepasar los límites mostrados en la tabla siguiente La máxima potencia de salida medida en la banda de 850MHz es 1866 38 mW 32 71 dBm ver el reporte de test de 7layers MDE...

Страница 52: ...TX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es Despejando G la máxima ganancia de antena es BANDA DISTANCIA GANANCIA MÁXIMA EN dBi 850MHz 20cm 1 7669 850MHz 50cm 9 7257 1900MHz 20cm 7 1227 1900MHz 50cm 15 0815 ...

Страница 53: ...T T Confirmación del cumplimiento de la normativa básica aplicable Prueba de RF contra los distintos components usados en la red de AT T Prueba de selección de red El dispositivo MTX GTW II no ha evidenciado ni causado ningún tipo de problema en la red de AT T cuando ha sido activado y utilizado en el laboratorio El MTX 3G JAVA está certificado para servicios CS y PS Cualquier cambio en el modo de...

Страница 54: ...onformity mark ECE R 10 Economic Commission for Europe ECE Regulation No 10 Uniform provisions concerning the approval of vehicles with regard to electromagnetic compatibility 2002 95 EC RoHS 1 2011 65 EC RoHS 2 Directive of the European Parliament and of the Council of 27 January 2003 and revised on 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electr...

Страница 55: ...of digital cellular radio telecommunications systems GSM and DCS ETSI EN 301 489 24 V1 5 1 Electromagnetic Compatibility and Radio spectrum Matters ERM Electromagnetic Compatibility EMC standard for radio equipment and services Part 24 Specific conditions for IMT 2000 CDMA Direct Spread UTRA for Mobile and portable UE radio and ancillary equipment EN 301 908 01 V5 2 1 Electromagnetic compatibility...

Страница 56: ... Products 2006 06 According to the Chinese Administration on the Control of Pollution caused by Electronic Information Products ACPEIP the EPUP i e Environmental Protection Use Period of this product is 20 years as per the symbol shown here unless otherwise marked The EPUP is valid only as long as the product is operated within the operating limits described in the Gemalto M2M Hardware Interface D...

Страница 57: ...95 1 Considerations for evaluation of human exposure to Electromagnetic Fields EMFs from Mobile Telecommunication Equipment MTE in the frequency range 30MHz 6GHz Products intended for sale in European markets EN 50360 Product standard to demonstrate the compliance of mobile phones with the basic restrictions related to human exposure to electromagnetic fields 300MHz 3GHz Please note that SAR requi...

Страница 58: ... II 2017 12 MTX by MATRIX ELECTRONICA S L U mtxm2m com gsmsupport matrix es 3 SELV Requirements The power supply connected to the MTX GTW II shall be in compliance with the SELV requirements defined in EN 60950 1 ...

Страница 59: ...msupport matrix es ROHS STATEMENT The MTX GTW II modem is compliant with the 2002 95 EC Directive of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment RoHS ...

Страница 60: ...licable collection point for the recycling of electrical and electronic equipment By ensuring this product is disposed of correctly you will help prevent potential negative consequences to the environment and human health which could otherwise be caused by inappropriate disposal of this product The recycling of materials will help to conserve natural resources For more detailed information about t...

Страница 61: ...Vallés Barcelona Spain Phone 902 19 81 46 Fax 902 99 54 14 MATRIX DURANGO Matrix Electrónica S L Pol Aliendalde 11 oficina 2G 48200 Durango Vizcaya Spain Phone 902 19 81 46 Fax 902 99 54 14 MATRIX VALENCIA Matrix Electrónica S L Valencia Spain Phone 902 19 81 46 Fax 902 99 54 14 MATRIX SEVILLA Matrix Electrónica S L Sevilla Spain Phone 902 19 81 46 Fax 902 99 54 14 MATRIX LISBOA LusoMatrix Lda Av ...

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