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Chapter 3: Placing the Antenna

Antenna Mast Design

17

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High masts or installations on ships with high vibration levels should be
further stabilized by stays from the mast flange.

Note

Stays and stiff masts can still not prevent vertical vibration if the mast
is attached to a deck plate that is not stiff. Every effort should be
made to mount the mast to an area that is well supported by ribs. If
this is not possible, extra deck plate stiffening should be provided.

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Содержание TracPhone F55

Страница 1: ...A Guide to the TracPhone F55 F77 Satellite Communications KVH TracPhone F55 F77 installation manual...

Страница 2: ...se If the data connection is not properly disconnected your computer may dial out on its own which could result in an unintended airtime charge KVH accepts no responsibility if this occurs It is the v...

Страница 3: ...the instructions on the following page to mount the antenna The TracPhone F77 is housed in either a standard dome or a deluxe dome both measuring approximately 35 89 cm in diameter If your antenna is...

Страница 4: ...55 antenna follow the alternate instructions below 1 Make sure that you have chosen a suitable mounting location based upon the guidelines provided in this manual and taking into account the dimension...

Страница 5: ...ble access hole as shown below The cable access hole must be located on the starboard side and must measure at least 2 50 mm and no greater than 31 2 90 mm in diameter large enough to access the anten...

Страница 6: ...mbly in place over the hole locations with the baseplate connector centered over the cable access hole location Ensure the baseplate s Forward arrow shown below points toward the bow Set the antenna b...

Страница 7: ...that it is surrounding the cable access hole Clean the mounting surface where the foam seal will be placed Remove the paper backing from the foam seal to expose the adhesive then lay the foam seal in...

Страница 8: ...urely but do not overtighten until the foam seal is compressed as far as it will go and all four feet are bottomed against the mounting surface 12 Place the radome over the baseplate Align the six rad...

Страница 9: ...Make sure that you have chosen a suitable mounting location based upon the guidelines provided in this manual and taking into account the dimensions shown below FWD 38 86 987 mm 4x 50 4x 13 mm 35 889...

Страница 10: ...nna cable 4 Before drilling the holes in the deck or mounting platform you need to verify that the antenna will be aligned properly when it is mounted Position the antenna unit in place over the hole...

Страница 11: ...up through the cable access hole Connect the antenna cable to the antenna s baseplate connector 7 Place the rear logo plate over the cable so that the cable exits the center opening Using the six M4...

Страница 12: ...o the hole from below as shown below Tighten securely but do not overtighten until the four feet are bottomed against the mounting surface 10 Install a protective screw cap over all eight radome screw...

Страница 13: ...Thrane Thrane A S TT 3086A Sailor Fleet55 TT 3084A Sailor Fleet77 Installation Manual Document number TT98 116875 E Release date March 15 2007...

Страница 14: ...c Inmarsat s product names are either trademarks or registered trademarks of Inmarsat Other product and company names mentioned in this manual may be trademarks or trade names of their respective owne...

Страница 15: ...ne A S failing to do so may void the warranty Radar safety distance Do not move the ADU closer to radars than the minimum safety distance specified in this manual this will possibly damage the ADU eve...

Страница 16: ...operation below 24 V DC should be avoided It is recommended that the voltage is provided by the ship hot 24 V DC power bus Be aware of high start up peak current 16 A 24 V 15 ms Maximum operational p...

Страница 17: ...ck Unit ADU 2 Chapter 2 GMDSS Installations 2 1 Requirements 3 2 2 Distress call initiation 3 2 3 Maritime Safety Information 3 2 4 Power Supply 4 Chapter 3 Placing the Antenna 3 1 Obstructions 7 3 2...

Страница 18: ...Cradle Assembly 28 6 3 Assembly Default 28 6 4 Assembly Alternative 31 Chapter 7 F55 Passive Cradle 7 1 Introduction 33 7 2 Passive Cradle Assembly 34 Chapter 8 Connecting Power 8 1 Power cable select...

Страница 19: ...Chapter 11 Service and Repair 11 1 Introduction 63 11 2 Modules 63 11 3 Power Supply Module PSM 65 11 4 High Power Amplifier HPA 66 11 5 Antenna Control Unit ACU 67 11 6 Sensor Unit SU 68 11 7 End Sto...

Страница 20: ...fications 81 B 2 F77 Technical Specifications 83 B 3 F55 F77 Environmental Specifications 84 B 4 F55 Outline Dimensions 85 B 5 F77 Outline Dimensions 86 B 6 Outline Dimensions Flange 87 Appendix C F55...

Страница 21: ...al about marine DC system 106 G 3 General about marine grounding 108 G 4 Grounding Recommendations 110 G 5 Alternative grounding for steel hulls 112 G 6 Alternative grounding for aluminum hulls 114 G...

Страница 22: ...Table of Contents x...

Страница 23: ...t BDU which contains the primary electronic parts is designed for wall or desktop installation The BDU supplies 42 VDC to the ADU through a single coaxial cable The F55 F77 BDU power requirement is 24...

Страница 24: ...Cradle The Passive Cradle which holds the Display Handset provides no activation of alert transmission The passive cradle may only be used for F55 1 6 Above Deck Unit ADU The antenna ADU consists of a...

Страница 25: ...MSC 130 A 3 2 it will need to include a distress cradle and handset fitted on the bridge as well as in the radio communications room if applicable for the ability to initiate distress calls 2 3 Marit...

Страница 26: ...r and the charger supplies the power required for the Fleet system This ensures true no break power supply for the Fleet system It is of cause necessary that the charger is powerful enough to supply t...

Страница 27: ...kept below 20 ms it can be guaranteed that a call e g a distress call will not be disconnected during this As it could be critical to maintain a call during an emergency situation it is strongly reco...

Страница 28: ...Chapter 2 GMDSS Installations 6 Power Supply...

Страница 29: ...cause signal degradation The amount of degradation depends on the size of the obstruction and the distance from the antenna As a rule of thumb any obstruction which subtends an angle of less than 3 a...

Страница 30: ...afety distance of 4 m from the antenna while it is transmitting This is based on a radiation level of 0 8 mW cm2 The F55 antenna has a safety distance of 2 m For higher radiation level see the table b...

Страница 31: ...Inmarsat based systems as these can compromise the ADU performance RF emission from radars might actually damage the ADU As the Fleet ADU itself is a quite powerful transmitter this on the other hand...

Страница 32: ...ship Despite the issues mentioned above the guidelines below can be given Since a radar radiates a fan beam with a horizontal beam width of a few degrees and a vertical beam width of up to 15 the wor...

Страница 33: ...U damage will normally be avoided d min is defined as the shortest distance between the radar antenna in any position and the surface of the Fleet ADU The separation distance for C band 4 8 GHz radars...

Страница 34: ...extra degradation due to the radar s could cause poor call quality A speech call might become noisy and perhaps fail while a data connection might decrease in speed and performance The presences of S...

Страница 35: ...o test the GPS performance before the installation is finalized 3 3 6 Other transmitters See Minimum Recommended Distance to Transmitters on page 88 in Appendix B for minimum recommended distance to t...

Страница 36: ...e Outline Dimensions Flange on page 87 in Appendix B The holes in the flange must be positioned symmetrically around the longitudinal axis of the ship to ensure the correct heading of the antenna See...

Страница 37: ...g severe shocks and vibration levels As every ship has unique structural characteristics it is difficult to give specific design rules Nevertheless every attempt should be made to design a mast which...

Страница 38: ...ss mm Max free mast length m Steel Al F55 F77 F55 F77 100 2 5 5 0 8 1 0 0 6 0 8 0 5 0 7 0 4 0 5 150 3 75 7 5 1 4 1 6 1 2 1 4 1 0 1 3 0 8 1 0 200 5 10 2 0 2 1 1 7 1 9 1 5 1 8 1 3 1 6 250 3 25 12 5 2 2...

Страница 39: ...urther stabilized by stays from the mast flange Note Stays and stiff masts can still not prevent vertical vibration if the mast is attached to a deck plate that is not stiff Every effort should be mad...

Страница 40: ...Chapter 3 Placing the Antenna 18 Antenna Mast Design...

Страница 41: ...nderneath 4 3 Grounding It is recommended that the antenna is grounded via its mounting bosses to its mounting plate as the RF coax screen and antenna electronics ground are referenced to this point T...

Страница 42: ...res should otherwise be followed for cabling in ship installations The maximum allowed RF loss in the Antenna cable is 10dB 1660 MHz This is to ensure the performance of the system The Cable loss can...

Страница 43: ...istance max 0 54 Also it has to be ensured that the specified minimum bending radius is respected If this is not the case the loss in the cable will increase Check the instruction from the cable suppl...

Страница 44: ...splay Handset See User Manual chapter 4 Ant Set up for mounting pos adjustment The only electrical connector is a single N Type connector on the lower radome 4 6 Important notes Do not re use any of t...

Страница 45: ...tured as a cabinet for bulkhead or desktop installation The cabinet is equipped with two mounting brackets which makes it possible to secure the unit on a bulkhead See Outline dimensions on page 92 in...

Страница 46: ...l is connected to the BDU by a TNC connector male and to the antenna cable by an N connector female The pigtail must be grounded at the N connector end use the grounding kit 2 to mount the cable on th...

Страница 47: ...mined by the width of the foil Copper foil 5 cm wide Max 50 cm Copper foil 10 cm wide Max 100 cm Copper foil 20 cm wide Max 200 cm Connect the foil to the hull by plenty of screws or hard soldering Ru...

Страница 48: ...Chapter 5 Installing the BDU 26 Grounding the BDU...

Страница 49: ...Handset is used for F77 and can be placed anywhere onboard the ship The only limitations are Maximum cable length do not extend the cable 40 m Minimum safe distance to magnetic steering compass 1 25...

Страница 50: ...ystem the Distress Cradle is not fully assembled when the system is shipped Select a suitable cable see Appendix A and assemble the Distress Cradle as described below 6 3 Assembly Default The assembly...

Страница 51: ...Chapter 6 F77 Distress Cradle Assembly Default 29 6666 Place the cable in the cable suspender and slightly tighten the screws 1 Mount the plate and tighten the screws 2 Plug the cable in J3 3...

Страница 52: ...Chapter 6 F77 Distress Cradle 30 Assembly Default Finally slide the grommet into the slot in the bottom plate and mount the plate and tighten the screws 3...

Страница 53: ...rnative 31 6666 6 4 Assembly Alternative The assembly instruction described below is meant for installation where the cable runs on a bulkhead Cut out the area shown Slide the grommet into the cradle...

Страница 54: ...Chapter 6 F77 Distress Cradle 32 Assembly Alternative...

Страница 55: ...dle Handset is used for F55 and can be placed anywhere on board the ship The only limitations are Maximum cable length do not extend the cable 40 m Minimum safe distance to magnetic steering compass 1...

Страница 56: ...assive Cradle Assembly With the Cradle follows an assembly kit which contains the following parts 4 x Screw Sheet screw 3 5 x 25 A4 4 x Rubber Blind Plug 3622A 1 x Relieving Clamp 6 x Screw 3 x 10 PT...

Страница 57: ...board in the Cradle connect the cable and secure the cable using the relieving clamp Connect the speaker and insert the blind plate Assemble the upper and lower cradle part using the self tapping scr...

Страница 58: ...Chapter 7 F55 Passive Cradle 36 Passive Cradle Assembly...

Страница 59: ...e on page 93 in Appendix C If a 50 m ship source impedance is measured only 200 m is left for power cable loop resistance since the total source impedance should be below 250 m 250 m 50 m 200 m For fu...

Страница 60: ...should not exceed 5 H If the inductance is too high the power supply may start to oscillate To minimize the cable inductance a multi 2 or 4 wire cable should be used Recommended power cable types and...

Страница 61: ...ngth as long as you keep the total source impedance 250 m and cable inductance 5 H The BDU is equipped with an internal 10 A thermal circuit breaker therefore no external fuse is necessary in order to...

Страница 62: ...ort circuit in the power cable connector the ships DC outlet should be protected by a 15 20 A fuse or circuit breaker Cable Type Length from source Source imp 50m Length from source Source imp 100m 4...

Страница 63: ...Chapter 8 Connecting Power Power supply specification 41 888 8 2 Power supply specification Voltage 24 V DC 10 30 floating Power 240 W Peak current 16 A 24 V 15 ms start up...

Страница 64: ...Chapter 8 Connecting Power 42 Power supply specification...

Страница 65: ...he System The power button on the Fleet55 and Fleet77 is placed on the back panel See figure below Press and hold the power button for a few seconds or until the green LED on the front of the terminal...

Страница 66: ...nfiguration is carried out by the Service User who has access to all functionality in the BDU Unit The system configuration can be done via the handset or by running the FleetCp program from a PC conn...

Страница 67: ...vice User PIN Dflt Setting Customer Dflt Factory Dflt Not in this release Ok to reset Distress LES Calibration IQ calib IQ const Modulator Demodulator Perform IQ calibration IAmp QAmp IOff QOff Phase...

Страница 68: ...ig sub menus you are referred to the TT 3084A Sailor Fleet77 TT 3086A Sailor Fleet55 User Manual Allowed LES selection An Allowed LES list can be selected under the Service User menu The Service User...

Страница 69: ...s are accessible It is now Preferred LES list that decides which LES s that can be used as Default LES 9 3 2 Help Desk The Help Desk menu can be used to select and initiate calls to certain numbers wh...

Страница 70: ...e is only room for ten numbers in the Help desk phone book If there is no more room for new phone numbers one will have to be deleted before a new number can be added Select a number by pressing or an...

Страница 71: ...dicated the corresponding ID s along with the IMN numbers If the ID shown by the terminal corresponds with the ID given by the ISP press If not then correct the ID by pressing for delete type the corr...

Страница 72: ...cked with a PUK code Normally known to the Super User or by a Service User The default factory Service User PIN code is 12345678 A blocked Service User PIN can be unblocked with a PUK code or by a Ser...

Страница 73: ...ct Pin Codes by pressing or and press 2 Select SeU PIN Chg by pressing or and press 3 Press to Type New Pin 4 Enter new PIN and press Retype Pin and press 5 The Display should show Pin was OK saved to...

Страница 74: ...nd press IQ calib When you have selected IQ calib an IQ calibration is performed This is only used in special circumstances as the IQ calibration is done from the factory If it is activated it may tak...

Страница 75: ...mber 3 X3 Handset Cradle 1 X4 Handset Cradle 2 X5 Antenna X6 ISDN Integrated Services Digital Network X7 USB Universal Serial Bus X8 LAN X9 RS 232 X10 NMEA 0183 2000 X11 4 Discreet I O X12 Power input...

Страница 76: ...The BDU has three RJ11 ports which can be used for connection of analogue phones or fax The connector outline and pin assignments are described in Figure 11 1 and table below Max cable length BDU to...

Страница 77: ...d to setup the terminal and also can be used to make or receive phone calls The connector outline and pin assignments are described in the figure and table below Maximum cable length BDU to Handset Cr...

Страница 78: ...rface This interface can be used for connection of ISDN equipment data as well as voice picture based equipment The connector outline and pin assignments are described in the figure and table below IS...

Страница 79: ...hat allows a single universal plug to connect PCs and peripherals of all kinds to each other The USB replaces all of the different serial and parallel PC connections with one standard plug and port Th...

Страница 80: ...he Ethernet port is a standard IEEE 802 3 port and requires a crossed Ethernet cable to a PC The LAN port enables the MPDS service The connector outline and pin assignments are described in the figure...

Страница 81: ...the terminal via Fleet CP software Connection of a IP Router When installing the configuration program you should connect your PC to the RS 232 interface The connector outline and pin assignments are...

Страница 82: ...Chapter 10 Hardware Interfaces 60 NMEA 0183 2000 Interface 10 8 NMEA 0183 2000 Interface This interface is for future use N M E A 0 1 8 3 2 0 0 0...

Страница 83: ...Off Radio Silence etc The connector outline and pin assignments are described in the figure and table below D is c re te I O Pin number Connection Note 1 GND This group of signals refer to BDU ship g...

Страница 84: ...Chapter 10 Hardware Interfaces 62 Discrete I O interface...

Страница 85: ...or further information on warranty and service you may also use the Thrane and Thrane home page at http www thrane com 11 2 Modules Repairs inside the BDU is not recommended to be carried out on board...

Страница 86: ...art of the ADU consists of a number of modules The following modules are available as spare parts See Appendix A HPA Module High Power Amplifier PSM Module Power Supply Module ACU Module Antenna Contr...

Страница 87: ...sconnect plug 2 and 3 Remember to release connector latches on both connectors do not use the wires to pull out the plugs Unscrew the four finger screws marked 1 until the PSM can be removed Module re...

Страница 88: ...nect the five plugs marked 1 Remember to release connector latches on the connectors do not use the wires to pull out the plugs Unscrew the eight finger screws marked 2 until the HPA can be removed Mo...

Страница 89: ...Disconnect the four plugs marked 2 Remember to release connector latches on the connectors do not use the wires to pull out the plugs Unscrew the two finger screws marked 1 until the ACU can be remove...

Страница 90: ...Unit SU Disconnect the plug marked 1 Remember to release connector latch on the connector do not use the wires to pull out the plug Unscrew the two finger crews marked 2 Remove the SU module Module r...

Страница 91: ...SS 69 111111111 11 7 End Stop Switches ESS Disconnect the plugs marked 1 2 the blue black wire Disconnect the plugs marked 3 4 the gray red wire do not use the wires to pull out the plugs Unscrew the...

Страница 92: ...d Repair 70 End Stop Switches ESS When the antenna disc reacts the end stop a click should be heard Note When the ESS are reassembled check that the ESS are being activated by switching the antenna di...

Страница 93: ...software related If an error message is received start the troubleshooting by restarting the system If other error messages than those shown in the table are received contact supplier or Thrane Thrane...

Страница 94: ...t cradle cable error BDU error ADU error As this error indicates an error that may be caused by many different reasons there is an elaborate troubleshooting procedure to follow cf below 1 LO Lock Not...

Страница 95: ...the BDU e g a F55 antenna to a F77 BDU Check change Antenna Control Unit Change Config Module to correct type Antenna FEU Wrong Type Check Conf A wrong antenna type is attached to the BDU e g a F55 a...

Страница 96: ...point the supply voltage has dropped to below 20 Volts If the drop is only for a short while the alarm might be inactive no red LED If this happens often please check your external power supply power...

Страница 97: ...ge alarms Step 2 Below deck BDU Handset Cradle or Above deck ADU error 1 Remove power 2 Disconnect antenna cable 3 Reinstall power 4 Switch on system disregard Antenna link down error Does Handset Com...

Страница 98: ...re Step 3 if Above deck error ACU cable or power error 1 Switch system off 2 Connect the antenna cable 3 Switch system on 4 In antenna Check the DSP LED flash If no check 40 V to ADU Check BITE Error...

Страница 99: ...38C Sailor Fleet Cradle without Distress TT 3622E Sailor Fleet Control Handset 4 wire TT 3620G Sailor Fleet55 Configuration Module TT 3038C 002 Item Part number Sailor Fleet77 Antenna ADU TT 3008C Sai...

Страница 100: ...374 A Note Antenna cable is not included in the basic package Item Part number Sailor Fleet55 77 Power Connectora a Included in the basic TT 3084A TT 3086A package TT31 202329 104 Sailor Fleet55 77 I...

Страница 101: ...ncluded in the basic TT 3084A TT 3086A package TT37 120468 C 25 m cradle cable TT37 120469 B 40 m cradle cable TT37 120470 B Item Part number 10 m cradle cablea a Included in the basic TT 3084A TT 308...

Страница 102: ...eet55 Antenna ADU S 403008F Sailor Fleet77 Antenna ADU S 403008C Sailor Fleet55 77 Electronics Unit BDU S 403038C Item Part number Sailor Fleet55 77 ADU HPA Pack 2 gen S 62 122028 Sailor Fleet55 77 AD...

Страница 103: ...Specifications Item Specification Rx Freq Band TX Freq Band 1525 0 1559 0 MHz 1626 5 1660 5 MHz Channel Spacing 1 25 kHz Antenna element Gain RX band min 17 2 dBi Gain TX band typical 17 5 dBi G T G T...

Страница 104: ...tions Cable losses RF attenuation max 10 dB DC resistance loop max 0 75 Max Cable length between BDU and ADU RG214 25 meter SA 07272 50 meter SA 12272 60 meter ADU Input voltage 42 V ADU Power range o...

Страница 105: ...1 25 kHz Antenna element Gain RX band typical 19 9 dBi Gain TX band typical 20 4 dBi G T G T 4 dBK EIRP Min EIRP 5 dBW Max EIRP 32 dBW Return loss Better than 12 dB 50 Cable losses RF attenuation max...

Страница 106: ...tion Frequency range 3 100 Hz Acceleration spectral 3 13 Hz 12 dB octave Density 13 100 Hz 0 011 g2 Hz Total RMS level 1 0 g Icing Up to 25 mm of ice Wind Normal operation with relative average wind v...

Страница 107: ...Appendix B F55 77 ADU Technical Specifications F55 Outline Dimensions 85 BBBB B 4 F55 Outline Dimensions Weight 17 6 g 0 3 kg Wind force 570 N 140 knots Moment at base interface 250 Nm...

Страница 108: ...ations 86 F77 Outline Dimensions B 5 F77 Outline Dimensions Weight 27 kg 1 kg Wind force 570 N 140 knots Moment at base interface 250 Nm 8 4 4 H O L E S M A X D E P T H P C 3 8 0 M A X F L A N N C O N...

Страница 109: ...Appendix B F55 77 ADU Technical Specifications Outline Dimensions Flange 87 BBBB B 6 Outline Dimensions Flange...

Страница 110: ...Appendix B F55 77 ADU Technical Specifications 88 Outline Dimensions Flange Minimum Recommended Distance to Transmitters Frequency range below 1000 MHz Distance to F77 F55 antenna...

Страница 111: ...voice 3 kbps BPSK TDMA 134 4 kbps 16QAM SCPC data Antenna Connector TNC female Antenna Voltage 42 5 V DC 0 5 V DC 2 wire telephone interface X1 X2 X3 600 ITU T Rec G 473 standard DTMF telephone RJ 11...

Страница 112: ...X7 Conforms with CCITT I 430 ETSI ETS300012 ANSI T1 605 USB interface X8 USB 2 0 compliant Full speed 12 Mbps LAN interface X9 Conforms with IEEE 802 3 10 Mbps Data Terminal Interface or Message Termi...

Страница 113: ...tage Input current High level input voltage Low level input voltage Conforms with RS410N open collector 10 52 V 50 mA Max 100 K Min 2 V Max 7 5 V Max 12 5 mA Max 3 5 V Min 1 0 V Max 32 V Max 10 mA Max...

Страница 114: ...Appendix C F55 77 BDU Technical Specifications 92 Outline dimensions C 2 Outline dimensions Weight 2 6 kg Dimensions are in mm...

Страница 115: ...he ship 24 V DC system and measure the source impedance of the ship installation as described below Measure the voltage without load R var disconnected Set the current to e g 1 A by adjusting R var an...

Страница 116: ...Appendix C F55 77 BDU Technical Specifications 94 Measuring the Ship Source Impedance...

Страница 117: ...male to PCB Audio RX 2 wire balanced 600 Audio TX 2 wire balanced 600 Max 40 m Cable Interface to Handset Connector type RJ45 10 pole female Distress Audible Alarm 75 85 dBA 1 m Power consumption Max...

Страница 118: ...stress Cradle Technical Specifications 96 Technical specifications Dimensions H x W x D 100 mm x 145 mm x 42 mm Weight 0 25 kg excl cable Equipment category Protected from the weather IEC 60945 Item S...

Страница 119: ...Appendix D Distress Cradle Technical Specifications Outline Dimensions 97 DDDD D 2 Outline Dimensions Dimensions are in mm...

Страница 120: ...Appendix D Distress Cradle Technical Specifications 98 Outline Dimensions...

Страница 121: ...RX 2 wire balanced 600 Audio TX 2 wire balanced 600 Max 40 m Cable Interface to Handset Connector type RJ45 10 pole female Power consumption Max 75 mA 28 V supply voltage Compass safety distance 125...

Страница 122: ...Chapter E Passive Cradle Technical Specifications 100 Outline Dimensions E 2 Outline Dimensions Dimension are in mm...

Страница 123: ...Chapter E Passive Cradle Technical Specifications Outline Dimensions 101 EEE...

Страница 124: ...Chapter E Passive Cradle Technical Specifications 102 Outline Dimensions...

Страница 125: ...ad Volume Control Att range 20 dB Power consumption 100 mA 5 V supply voltage Compass safety distance 125 cm Degree of protection IP40 according IEC 529 Interface Connector type RJ45 10 pole Ambient t...

Страница 126: ...Chapter F Handset Technical Specifications 104 Outline Dimensions F 2 Outline Dimensions Dimension are in mm...

Страница 127: ...easons In the event of a lightning strike at the ADU a proper grounding of the system will provide a low resistance path to divert the strike discharge to seawater G 1 3 Protection Secondly the ESD pr...

Страница 128: ...System G 2 2 Two wire Return System This configuration implies that no part of the circuit in particular the battery negative is connected to any ground potential or equipment The system is totally is...

Страница 129: ...ential typically at the engine negative terminal This is done in order to polarize the DC electrical system Note This arrangement is not suitable for steel and aluminum vessels as this might cause ele...

Страница 130: ...only via the engine negative terminal though the shaft and the propeller or left completely floating G 3 3 Lightning Ground Ground potential immersed in seawater Provides a path to ground lightning st...

Страница 131: ...rwater metal parts such as keel isolated water tank engine block etc will act as a capacitive RF ground that is no DC connection to seawater Often referred to as counterpoise for the SSB HF aerial sys...

Страница 132: ...U must be grounded to the ship hull by means of the Antenna Pigtail Cable and the Grounding Kit accessories TT 403088A 930 Further the BDU must be grounded at its grounding stud in order to ensure a p...

Страница 133: ...avoid corrosion It is always recommended to establish the shortest grounding path as possible e g on steel hulls the ADU should be grounded directly to the hull 1 However due to the fact that this is...

Страница 134: ...ade at the same electrical ground potential as the BDU see Grounding the ADU The BDU provides galvanic isolation as required from its input power terminals to the chassis grounding stud This way the i...

Страница 135: ...shoulder bushes and washers thus ensuring the isolated RF ground see page 123 ADU grounded with separate cable ADU Mast electrically bonded to the steel hull Base Plate ADU isolated from the the hull...

Страница 136: ...ion is to be made at the same electrical ground potential as the BDU see Grounding the ADU The BDU provides galvanic isolation as required from its input power terminals to the chassis grounding stud...

Страница 137: ...ding and RF protection Alternative grounding for aluminum hulls 115 GGG Alternative grounding for aluminum hulls ADU BDU Grounding Bolt Heavy Gauge Wire BDU Grounding Kit RF Ground Capacitive or seper...

Страница 138: ...in mind that the ADU ground connection is to be made at the same electrical ground potential as the BDU see Grounding the ADU G 7 2 Grounding the ADU If the mounting base of the antenna is electrical...

Страница 139: ...endix G Grounding and RF protection Alternative grounding for fiberglass hulls 117 GGG Alternative grounding for fiberglass hulls BDU RF Ground Plate Heavy Gauge Wire BDU Grounding Kit ADU Grounding B...

Страница 140: ...mind that the ADU ground connection is to be made at the same electrical ground potential as the BDU see Grounding the ADU G 8 2 Grounding the ADU If the mounting base of the antenna is electrically c...

Страница 141: ...Appendix G Grounding and RF protection Alternative grounding for timber hulls 119 GGG Alternative grounding for timber hulls ADU BDU RF Ground Grounding Bolt Heavy Gauge Wire BDU Grounding Kit...

Страница 142: ...nsulated tinned high quality and if exposed also UV resistant cables This shall also apply to the separate ground cable mentioned in the previous paragraphs The ground cable is constructed using an ap...

Страница 143: ...Appendix G Grounding and RF protection Separate Ground Cable 121 GGG ADU M10 Insulated Ring Terminal Raychem DuraSeal Series BDU M4 Insulated Ring Terminal Raychem DuraSeal Series...

Страница 144: ...he mounting grounding bolts on the ADU Use bolts and washers of stainless steel and seal the joint with protective coating to avoid corrosion If the ADU is to be isolated from the mounting base should...

Страница 145: ...shes and washers accessories must be used as illustrated below Please note that the isolation has to be implemented on all four mounting bolts including the bolt securing the ground cable M10 Isolatio...

Страница 146: ...seal the joint with protective coating to avoid corrosion M10 Isolation Washer Mounting Base M10 Screw Insulator Plain Washer stainless steel Ground Cable M10 Ring Crimp Terminal Raychem DuraSeal ser...

Страница 147: ...ransmitters are encountered 2 it is advisable to mount ferrite clamps on the coax cable in order to provide suppression of induced RF The ferrites will have no effect on the differential mode signals...

Страница 148: ...ill also slow the fast rate of rise of an electrostatic discharge current pulse This might be an issue during installation antenna cable disconnected where different electrical potentials have had the...

Страница 149: ...tones when each key is pressed This system allows navigation of voice menus and other advanced calling services All wireless phones use DTMF dialing E EIRP Effective Isotropically Radiated Power The...

Страница 150: ...IMSO International Maritime Satellite Organisation ISDN Integrated Services Digital Network An international communications standard for sending voice video and data over digital telephone lines or no...

Страница 151: ...or communication between marine electronics and also more generally GPS receivers P PCB Printed Circuit Board PIN Personal Identification Number PSM Power Supply Module PUK PIN Unblocking Key An eight...

Страница 152: ...exing multiple users onto a single channel on a single carrier by splitting the carrier into time slots and allocating these on an a needed basis TNID Terrestrial Network ID U UDI Universal Data Inter...

Страница 153: ...10 installation location 23 installing 23 outline 92 short description 1 specifications 89 C cables Above Deck Unit 20 ground 120 power 37 Calibration menu 52 company addresses ii contact information...

Страница 154: ...unding 116 Flange dimensions 87 outline 87 G GMDSS requirements 3 GPS receiver distance from ADU 12 grounding 105 Above Deck Unit 19 111 aluminum hulls 114 Below Deck Unit 24 110 cable 120 fiberglass...

Страница 155: ...elp Desk 47 IMN Config 49 LES Config 46 PIN Codes 50 Service User 44 menu tree Service User 45 modules replacing Antenna Control Unit 67 End Stop Switches 69 High Power Amplifier 66 Power Supply Modul...

Страница 156: ...iii Sensor Unit replacing 68 service 63 Service User PIN changing 51 setup 43 Ship Source Impedance measuring 93 spare parts for Above Deck Unit 64 specifications Above Deck Unit 81 Below Deck Unit 8...

Страница 157: ...s Inc 50 Enterprise Center Middletown RI 02842 5279 U S A Phone 1 401 847 3327 Fax 1 401 849 0045 E mail info kvh com Internet www kvh com KVH Europe A S Kokkedal Industripark 2B 2980 Kokkedal Denmark...

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