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AIS Class B transceiver

Installation and operation manual

Summary of Contents for 427-0002B

Page 1: ...AIS Class B transceiver Installation and operation manual ...

Page 2: ...est level of performance and durability and we hope that it will provide many years of reliable service We constantly strive to achieve the highest possible quality standards should you encounter any problems with this product please contact your dealer who will be pleased to offer any assistance you require ...

Page 3: ...OM Common electrical CPA Closest Point of Approach CS Carrier Sense DC Direct Current Dec Decimal DGPS Differential GPS DGNSS Differential GNSS DHCP Dynamic Host Configuration Protocol DOP Dilution of Precision DSC Digital Selective Calling DTM Datum ECDIS Electronic Chart Display and Information System ENI Unique European Vessel Identification Number EPFS Electronic Position Fixing System EPIRB E...

Page 4: ...aya Sistema Russian GNSS GND Electrical Ground GNS GNSS fix data message GNSS Global Navigation Satellite System GPS Global Positioning System GRS GNSS range residuals message GSA GNSS DOP and active satellites message GSV GNSS satellites in view message HDT Heading true message Hex Hexadecimal IEC International Electrotechnical Commission IMO International Maritime Organisation INT Internal IPx6 ...

Page 5: ...ical Miles NMEA National Marine Electronics Association PDF Portable Document Format PGN Parameter Group Number PI Presentation Interface R TTE Radio and Telecommunications Terminal Equipment Directive RAIM Receiver Autonomous Integrity Monitoring RF Radio Frequency RMC Recommended minimum specific GNSS data message ROT Rate of Turn RX Receive SD Secure Digital SOG Speed Over Ground SOLAS Safety o...

Page 6: ...reads per Inch TX Transmit UDP User Datagram Protocol UHF Ultra High Frequency UTC Co ordinated Universal Time VBW Dual ground water speed message VDM All VDL AIS messages received VDO AIS own ship broadcast data VHF Very High Frequency VSWR Voltage Standing Wave Ratio VTG Course over ground and ground speed message WGS84 World Geodetic System 1984 WEEE Waste Electrical Electronic Equipment WiFi W...

Page 7: ...Connecting the equipment 27 3 5 Grounding the AIS transceiver 36 3 6 Connection to an NMEA2000 network optional 37 3 7 USB Connection 37 3 8 Turning the AIS transceiver on 37 3 9 Passwords and security 38 4 Operation 39 4 1 Using the AIS transceiver 39 4 2 Display and controls 40 4 3 Button functions 40 4 4 Adjusting display brightness 41 4 5 Menu navigation 42 4 6 Information displayed 44 4 7 Con...

Page 8: ...ing 61 6 Technical specification 65 6 1 Applicable equipment standards 65 6 2 Product category 66 6 3 Physical 66 6 4 Environmental 67 6 5 Electrical 67 6 6 Display and user interface 67 6 7 Internal GNSS 68 6 8 TDMA Transmitter 68 6 9 TDMA Receiver 68 6 10 DSC Receiver 69 6 11 RF Connections 69 6 12 Data interface 70 6 13 Power and data connector information 71 6 14 Open source licences 71 ...

Page 9: ...ector cable wiring connections 31 Table 2 14 Way connector serial data ports 31 Figure 14 Serial bi directional port connection 32 Figure 15 18 Way connector cable wiring connections 33 Table 3 18 Way connector serial data ports 33 Table 4 Alarm relay connections 34 Figure 16 Power connection 35 Table 5 Power supply connections 35 Figure 17 Grounding the AIS transceiver 36 Figure 18 Enter password...

Page 10: ...List of figures and tables Page 8 Figure 29 AIS Transceiver dimensions 59 Figure 30 GNSS Antenna 60 Table 7 Troubleshooting 63 ...

Page 11: ...nection point It is essential that the ground connection point is used in all installations regardless of what other equipment is connected The ground connection point must be bonded to protective ground using as short a connection as possible This equipment is intended as an aid to navigation and is not a replacement for proper navigational judgement Information provided by the equipment must not...

Page 12: ... a satellite based location system such as the GLONASS or GPS The accuracy of a GNSS position fix is variable and affected by factors such as the antenna positioning how many satellites are used to determine a position and for how long satellite information has been received 1 2 2 Compass safe distance The compass safe distance of this AIS transceiver is 0 5m or greater for a 0 3 deviation 1 2 3 S...

Page 13: ...E The manufacturer of this product declares that this product is in compliance with the essential requirements and other provisions of the R TTE directive The declaration of conformity is provided as a PDF file on the product CD supplied with the product The product carries the CE mark notified body number and alert symbol as required by the R TTE directive The product is intended for sale in the ...

Page 14: ...ncy energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation C...

Page 15: ...device This Class B digital apparatus complies with Canadian ICES 003 Le présent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autorisée aux deux conditions suivantes 1 L appareil ne doit pas produire de brouillage et 2 L utilisateur de l appareil doit accepter tout brouillage radioélectrique subi même si le brouillage est su...

Page 16: ...Notices Page 14 ...

Page 17: ...ng system It allows vessels equipped with AIS to automatically and dynamically share and regularly update their position speed course and other information such as vessel identity with similarly equipped vessels Position is derived from GLONASS or GPS and communication between vessels is by VHF digital transmissions Figure 1 The AIS network ...

Page 18: ...Introduction Page 16 ...

Page 19: ...contact your dealer Figure 2 What s in the box 3 2 Preparing for installation In addition to the items provided with the AIS transceiver the following items will be required to complete the installation Power cable GNSS antenna and cable Product CD Warranty card Product mounting template Quick start guide AIS transceiver 18 way data accessory cable Mounting bracket Fixings ...

Page 20: ...this is not sufficient to reach between the desired GNSS antenna location and the AIS transceiver you will require an extension cable Please contact your dealer for details 3 2 3 GNSS Antenna mount A mounting bracket is required for the supplied GNSS antenna 3 2 4 Data interface cables Suitable screened multi core cable will be required to connect the ships sensor DGPS Gyro etc data ports to the A...

Page 21: ...d configuration Page 19 Figure 3 Typical AIS transceiver connection NMEA2000 Optional connections Chassis GND GNSS antenna VHF antenna 12V DC to 24V DC Supply Displays etc Surge arrestor Ship s sensor data Heading etc ...

Page 22: ...F to 131 F Ensure adequate ventilation is present when panel mounting the AIS transceiver It is recommended that the AIS transceiver be installed in a below decks environment protected from the weather The AIS transceiver is supplied with four self tapping screws for attachment of the AIS transceiver to a suitable surface using the supplied bracket Please refer to Figure 5 for guidance The AIS tra...

Page 23: ...o Figure 29 for dimensions A drilling and cutting template is provided with the AIS transceiver To panel mount the unit it is necessary to remove the 4 off socket cap screws recessed in front of the unit See Figure 6 Desk mounted Panel mounted Overhead mounted reverse mounting bracket ...

Page 24: ...Installation and configuration Page 22 Figure 5 Desk mounting the AIS transceiver ...

Page 25: ...unting the GNSS antenna supplied with your AIS transceiver you will require a one inch 14 TPI pole mount Contact your dealer to source a mount suitable for the installation location Please note the following guidelines when selecting a location for the GNSS antenna The GNSS antenna mount should be secured to a rigid surface ...

Page 26: ...otentially reduce the accuracy of the GNSS position Route the GNSS antenna cable to the AIS transceiver If extension cables are required all junctions should be made using appropriate co axial connectors and made watertight Connect the GNSS antenna cable to the GNSS connector on the AIS transceiver Figure 7 GNSS Antenna location GNSS Antenna should be at least 5m 16ft from radar or satellite commu...

Page 27: ...er antennas as possible The VHF antenna should have omnidirectional vertical polarization Where possible the VHF antenna should be installed at least 3m 10ft away from other transmitting radio satellite and radar antennas Ideally the AIS VHF antenna should be mounted directly above or below the ship s primary VHF radiotelephone antenna with no horizontal separation and with a minimum of 2m vertica...

Page 28: ...be waterproof by design Antenna cables should be installed in separate signal cable channels at least 10cm 4ins away from power supply cables Crossing of cables should be done at right angles and sharp bends in the antenna cables should be avoided It is recommended that a suitable surge arrestor is fitted in line with the VHF antenna connector Connect the VHF antenna cable to the VHF connector on ...

Page 29: ...mended to use the optional fully wired cables and Junction box for greater flexibility An accessory cable is supplied with the product to provide connections to the NMEA0183 bi directional data ports The cable has a pre moulded connector at one end which should be connected to the 18 way connector on the rear of the unit The other end of the cable has colour coded wires ready for connection The ta...

Page 30: ...in MKD Wire Colour Pin Function NMEA0183 Port 1 COM External display 2 Black 1 High speed NMEA0183 output 38 400baud intended for chart plotters NMEA0183 Port 1 Tx External display 2 Blue White 3 NMEA0183 Port 1 Tx External Display 2 White Blue 4 NMEA0183 Port 2 Rx Bi directional serial port Red White 6 Can be set to low speed 4 800 baud intended for connec tion to other NMEA0183 compati ble senso...

Page 31: ...cularly useful when using a chart plotter having only a single NMEA0183 port for example An additional sensor such as a gyro compass can be connected to the AIS transceiver via the input port and the AIS transceiver can be connected via the output port to the chart plotter resulting in the chart plotter receiving both AIS information and heading information simultaneously AIS transceiver AIS trans...

Page 32: ...62 1 2 data ports for connection of ship s sensors and display equipment as described in Table 2 and Table 3 There are three input only ports for ship s sensor data and three bi directional high speed ports for connection of display equipment These can be connected using an accessory cable pack purchased through your dealer 3 4 3 Data input ports 14 way connector Figure 12 Serial input port connec...

Page 33: ...sor 2 input Receive only 4800 3 Sensor 3 input Receive only 4800 PIN 1 3 6 7 2 5 8 9 12 11 14 13 10 4 WIRE COLOUR BLACK BROWN BLUE RED ORANGE PURPLE GREEN WHITE WHITE BLACK GREY YELLOW RED BLACK PINK DRAIN WIRE SIGNAL NOT USED NOT USED SILENT N SILENT P SENSOR 1 RX A SENSOR 1 RX B SENSOR 1 COM SENSOR 2 RX A SENSOR 2 RX B SENSOR 2 COM SENSOR 3 RX A SENSOR 3 RX B SENSOR 3 COM CHASSIS 9 8 7 6 12 11 1...

Page 34: ...A and RX B signals 3 4 4 Silent mode switch To activate the Silent mode switch apply a voltage of between 2V and 30V to the SILENT P Pin 7 and SILENT N Pin 6 terminals of the 14 way connector 3 4 5 Data bi directional ports 18 way connector Figure 14 Serial bi directional port connection 18 way interface connection ...

Page 35: ...T TX A SERIAL PORT TX B SERIAL PORT RX A SERIAL PORT RX B SERIAL PORT COM EXT DISPLAY 2 TX A EXT DISPLAY 2 TX B EXT DISPLAY 2 RX A EXT DISPLAY 2 RX B EXT DISPLAY 2 COM ALARM NC ALARM COM EXT DISPLAY 1 TX A EXT DISPLAY 1 TX B EXT DISPLAY 1 RX A EXT DISPLAY 1 RX B EXT DISPLAY 1 COM CHASSIS ORANGE BROWN PURPLE BLUE BLACK RED RED WHITE PINK YELLOW GREEN GREY WHITE ORANGE WHITE BLACK WHITE BROWN WHITE ...

Page 36: ... which can be found under the Home System settings Interfaces menu option 3 4 6 Alarm connections The AIS transceiver also provides connections to the alarm relay contacts The alarm relay connections are described in Table 4 Table 4 Alarm relay connections Alarm connection Function Contact rating COM Alarm relay common connection 2A at 220VDC or 60W maximum NC Alarm relay normally closed connectio...

Page 37: ...y power cable as shown in Figure 16 Figure 16 Power connection Table 5 Power supply connections The power supply current ratings and recommended fusing or circuit breaker currents are as follows Wire colour Function Connect to Red Power supply 12VDC to 24VDC power supply Black Power supply Power supply ground Power connection ...

Page 38: ...e fixing kit to allow connection to the grounding point on the rear of the AIS transceiver chassis as indicated in Figure 17 Figure 17 Grounding the AIS transceiver This product must be connected to protective ground via the ground connection point It is essential that the ground connection point is used in all installations regardless of what other equipment is connected The ground connection poi...

Page 39: ... To install the drivers please follow the steps below 1 Insert the CD into the PC and navigate to the USB drivers folder 2 Double click on the setup exe file to launch the installer 3 Follow the on screen installation instructions to complete installation 4 Once installed the AIS unit can be connected to the PC The USB drivers will be installed automatically and the AIS will appear as a new COM po...

Page 40: ...creen The password entry screen is shown in Figure 18 Highlight the required character then press Select to enter that character When all characters of the password have been entered select OK Figure 18 Enter password screen 16 58 29 SOG 21 1kt UTC 1h COG 88 0 50 32 0286 N 0 55 2715 W PASSWORD SETTINGS Enter the current password 1 2 3 4 5 6 7 8 9 0 Q W E R T Y U I O A Z X C V B N M OK P S D F G H ...

Page 41: ...etails appear on your target list These vessels will also be able to see your vessel on their chart plotter or PC It may take up to six minutes for your full vessel details to be visible to others Specific details of how to configure your chart plotter to make use of the AIS transceiver features will be given in your chart plotter manual If you are using charting software running on a PC please re...

Page 42: ...t information presented on the display The scroll wheel can also be pressed to confirm data entry or select information Chart Screen brightness key When pressed with a short press will go to the Chart screen When pressed and held it will go to the Display brightness screen Scroll wheel push to select Function keys up down left right Back Home Micro SD card slot behind door Chart Screen brightness ...

Page 43: ...ating around the screen Speaker The speaker is located behind the Scroll wheel and can provide an audible sound when a key is pressed a message is received or an alarm is activated Sounds can be enabled or disabled via the Sound Settings menu Micro SD card The Micro SD card socket behind the door is provided to allow uploading of new software to the AIS transceiver Display The display shows essent...

Page 44: ...an be navigated by using the controls Selection of an icon will then display the information beneath in accordance with Figure 21 Pressing the Back Home key will exit the menu HOME 16 58 29 SOG 21 1kt UTC 1h COG 88 0 50 32 0286 N 0 55 2715 W Target list User settings Target plot Chart Messages Alarms Own dynamic data System settings 5W ...

Page 45: ...n be used to enter text or numbers MESSAGE INBOX SENT MESSAGES COMPOSE MESSAGE SENSOR PORT 1 TARGET LIST USER SETTINGS TARGET PLOT CHART MESSAGES ALARMS OWN DYNAMIC DATA SYSTEM SETTINGS FILTER CPA TCPA SETTINGS TIME LANGUAGE SOUND SETTINGS DISPLAY SETTINGS LOGGING INTERFACES SYSTEM INFORMATION ADVANCED TEST ENGINEERING GNSS SOURCE CHART SETUP HELP AND SUPPORT VESSEL DATA SETTINGS HOME SENSOR PORT ...

Page 46: ... 22 Display layout 4 6 1 Menu title Refers to the current menu displayed from Figure 21 4 6 2 Time Time derived from GNSS satellites or AIS Base Stations 4 6 3 Time offset Offset from UTC set on the Time menu HOME 16 58 29 SOG 21 1kt UTC 1h COG 88 0 50 32 0286 N 0 55 2715 W Speed Course Time Time offset Menu title Main display area Messages RX TX Filtering Power setting GNSS Status Alarms Position...

Page 47: ...e Filtering Illuminated to show that target filter settings apply Alarms Displays an alarm icon to show the presence of acknowledged or unacknowledged AIS alarms Messages Displays an envelope icon with a number to show the pres ence of AIS messages received See menu Messages GNSS Status Displays an icon to show if GNSS data is being received Figure 23 GNSS Icons Power Displays 1W or 5W to indicate...

Page 48: ...creen message The list of currently active AIS Alarms can be displayed by accessing the Alarms menu Certain AIS Alarms can be switched off in the Alarm Settings menu This is available from the Options menu The alarm conditions are displayed at the top of the screen and are represented as follows Figure 24 Alarm icons If any alarm condition persists contact your dealer or installer New unacknowledg...

Page 49: ...hould the receiver hardware malfunction The receiver is identified by the value of x as shown below The following alarms will be generated in this condition ALR 003 Rx Channel 1 ALR 004 Rx Channel 2 ALR 005 DSC Channel 70 If the receiver returns to normal operation this alarm will be cleared Antenna VSWR exceeds limit This alarm occurs if there is a problem with your antenna or antenna connection ...

Page 50: ...elated Message is received the user will be notified immediately with a pop up showing the message Standard text messages are Heading lost or invalid This alarm occurs if the AIS transceiver has no valid heading information from any connected sensor or if the heading is undefined No sensor position in use This alarm occurs if the AIS transceiver has no valid position information from any connected...

Page 51: ...t messages however this function is not mandatory Class B AIS transceivers are not able to receive addressed SRM or text messages There is therefore no guarantee that text messages or SRMs sent to a Class B AIS transceiver will be received 4 6 9 Chart The AIS transceiver contains an application which will display AIS targets received along with its own vessel position on a chart style plot The cha...

Page 52: ...play to a day or night colour scheme and configure the sounds emitted by the device It is also possible from this screen to set the UTC time offset change the filter settings and display the menus in a number of non English languages 4 7 Configuring vessel information 4 7 1 Pre configuration checks To proceed with configuration the steps in Section 3 should already have been completed 4 7 2 Config...

Page 53: ...aler who will arrange to have the MMSI reset 4 7 3 Configuring the GNSS receiver The GNSS receiver can be configured to operate in one of three modes GLONASS and GPS in this mode the position fix is derived from both the GLONASS and GPS network in parallel This mode is the default setting and gives the best performance GPS in this mode only GPS satellites are used for the position fix GLONASS in t...

Page 54: ...opriate are correct by comparing the displayed position to other data sources 3 Check that the TX icon flashes periodically 4 If the vessel is in an area where other AIS equipped vessels are present press the Back Home key and select Target list to check that data from other AIS equipped vessels is displayed 5 Go to the Home System settings System Information screen and select Hardware status chec...

Page 55: ...ng or descending order Navigation up and down the list is via the up and down arrow keys or scroll wheel Selecting a highlighted target using the Select key will bring up more details of that target The Options menu on this screen provides additional actions which can be performed on the Target list NAME MMSI Range Bearing CPA TCPA Type Age TARGET LIST 16 58 29 SOG 21 1kt UTC 1h COG 88 0 50 32 028...

Page 56: ...e of the Target list shows how many targets are visible or filtered out If a filter is set the filter icon is displayed at the top of the screen The Filters icon does not represent CPA TCPA settings 4 9 3 CPA TCPA Settings The AIS transceiver can be configured to identify approaching vessels which fall within certain limits The Closest Point of Approach CPA defines a boundary around the own vessel...

Page 57: ...rrow keys When selected a square outline will appear around the target and the vessel details will be shown on the left hand side of the screen By pressing the options menu key additional display features can be selected If the Own Vessel Details option is selected the left hand side of the screen will change to show own vessel dynamic data If the MOB Details Display option is selected the target ...

Page 58: ...s chart display The AIS transceiver will read only Jeppesen C MAP MAX format Micro SD cards See your dealer for available charts for your region Insert a C MAP Micro SD card into the Micro SD card socket The AIS transceiver will then automatically overlay that higher resolution chart region onto the relevant region on the AIS transceiver s world chart Remove the Micro SD card and the region will r...

Page 59: ...d to the Micro SD card at a time 4 10 4 Saving Loading settings From the Home System Settings Advanced Save Restore settings menu all system settings and AIS transceiver configuration data can be saved to the Micro SD card if one is inserted into the card socket Settings previously saved can be restored thus restoring the AIS transceiver to a previous configuration 4 11 WiFi Feature The AIS transc...

Page 60: ...to it Once connections are made a range of NMEA0183 sentences will be transmitted from the AIS transceiver to any connected devices 4 11 3 Advanced WiFi features Within the WiFi screen certain parameters can be changed such as Channel Number Protocol Port Encryption etc These are recommended for advanced users only WiFi is switched off by selecting Disable in the Select operating mode box ...

Page 61: ...Technical information Page 59 5 Technical information 5 1 AIS Transceiver overall dimensions Figure 29 AIS Transceiver dimensions 165 mm 111 mm 196 mm 143 mm 152 mm 130 mm 79 mm 49 mm ...

Page 62: ...Technical information Page 60 5 2 GNSS Antenna drawing Figure 30 GNSS Antenna The dimensions of the supplied antenna may vary from those shown here 68 mm 75 mm TNC male TNC male 10m RG58 cable ...

Page 63: ...correctly Check that the power supply is a 12VDC or 24VDC supply Check that the connections to the chart plotter are correct The screen is not illuminated Check that the power supply is connected correctly Check that the power supply is a 12VDC or 24VDC supply Press and hold the Chart Screen brightness button for at least 5 second The display should return to maximum brightness ...

Page 64: ...eristics are briefly affected No GPS position fix can be obtained Please check the AIS transceiver is located where the internal GPS antenna has a clear sky view or that an external GPS antenna is properly connected and installed Review the GPS signal strength graph in Home System settings Advanced GNSS Source The power supply is outside the allowable range Check that the power supply is within th...

Page 65: ...essels but my vessel name is not shown on their chart plotter or PC Some older AIS devices and chart plotters do not process the specific class B message which provides the vessel name message 24 This is not a fault of your AIS transceiver Software upgrades are available for many older chart plotters which will correct this issue The other vessel should update its AIS unit and or chart plotting so...

Page 66: ...Technical information Page 64 ...

Page 67: ...n and radio communication equipment and systems General requirements Methods of testing and required test results IEC61162 1 Ed 4 0 2010 11 Maritime navigation and radio communication equipment and systems Digital interfaces Single talker and multiple listeners IEC61162 2 Ed 1 0 1998 09 Maritime navigation and radio communication equipment and systems Digital interfaces Single talker and multiple ...

Page 68: ...rds methods of testing and required test results IEC6118 02 1st Ed 1998 06 Global navigation satellite systems GNSS Part 2 Global navigation satellite system GLONASS Receiver equipment Performance standards methods of testing and required test results Product category This product is categorised as protected in accordance with the definitions provided in IEC 60945 AIS Transceiver dimensions 152mm ...

Page 69: ...bsolute min 10 8V absolute max 31 2 V Power consumption 12W Current consumption 12 VDC supply 0 9A typical 4 0A peak Current consumption 24 VDC supply 0 5A typical 3 0A peak Display 800 x 480 pixel colour LCD with adjustable backlight Luminance 500cd m2 max 75cd m2 default Recommended viewing distance 45cm Keypad Five function keys and three menu keys with adjustable backlight Rotary control Encod...

Page 70: ...MHz Accuracy 2 5m CEP 5 0m SEP without differential correction 2 0m CEP 3 0m SEP with SBAS or RTCM DGPS correction Antenna requirement Active antenna 5V bias with gain 15dB Frequency range 156 025MHz to 162 025MHz Channel bandwidth 25kHz Output power 1W or 5W automatic selection Data transmission rate 9600 bits s Modulation mode 25kHz GMSK Number of receivers 3 Frequency range 156 025MHz to 162 02...

Page 71: ...ponse rejection 70dB Number of receivers 1 Frequency 156 525MHz Channel 70 Channel bandwidth 25kHz Sensitivity 107dBm BER 10 2 Modulation mode 25kHz AFSK Adjacent channel selectivity 70dB Spurious response rejection 70dB VHF Antenna connection SO 239 UHF VHF Port impedance 50 Ohms GNSS Antenna connections TNC female GNSS Port impedance 50 Ohms ...

Page 72: ...or data input ports Number of ports 3 Standard IEC61162 1 2 Baud rate 4800 baud or 38400 baud Port impedance 54K Ohms Bi directional data ports including pilot port Number of ports 3 Standard IEC61162 1 2 Baud rate 4800 or 38400 baud Port impedance 54K Ohms ...

Page 73: ...ls please see the System information screen Silent Mode port Port impedance 10K Ohms NMEA 2000 Port Load equivalency number LEN 1 Power connector Chogori 22002525 04 RC Mating Half Chogori 22002221 01 18 way data connector Chogori 23018525 04 RC Mating Half Chogori 23018221 01 14 way data connector Chogori 23014525 05 RC Mating Half Chogori 23014221 01 ...

Page 74: ...Technical specification Page 72 ...

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Page 76: ...201 0707 1 Manufacturer s code 427 NMEA 2000 Product code xxxxx ...

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