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Configuration and Operations

 

LD900 Installation and Oper ations M anual   

48 

 
 
 
 
 
 
 
 
 
The 

Additional Settings

 options are as follows: 

 

Protocol 

RS232

 (default) / 

RS422

 

 

Data Bits 

7

 / 

(def ault)

 

 

Parity Bits 

-

 N

 (def ault) / 

E

 / 

O

 

 

Stop Bits 

1

 (def ault) / 

2

 

 

The next page will prompt to “

Select Interface Type

”. Using the arrow buttons select the appropriate response 

and click tick to confirm. When selecting 

None

 all input and outputs for that particular COM port will cease and 

the user will be returned to the 

Configuration > Ports

 page. If selecting 

Input

 or 

Output

 the provided response 

will determine which additional configuration settings will be displayed. 
 

 

 

If  selecting 

Output

, a choice of 

COM# Type

(s) 

NMEA, UKOOA, TRINAV

 and 

VTRCM

 will be shown, with an 

additional 

INS

 option shown if licensed. If  selecting 

Input

, a choice of 

VRTCM 

(VERIPOS format RTCM), 

RTCMV2

 or 

RTCMV3

 will be shown. Use the arrow buttons and tick to choose the appropriate response: 

 

               

 
 
 
 
 
 
 
 
 
 
 
When selecting 

Output > INS

, a choice of 

INSPVA

,

 HEAVE

 and 

TSS1

 will be shown.  

 

 

 

 

 

Summary of Contents for VERIPOS LD900

Page 1: ...LD900 Installation and Operations Manual AB V MA 00643_RevA3 26 February 2021...

Page 2: ...e Models 14 2 3 Interface and Connectors 15 3 LD900 Installation 18 3 1 Schematic Examples 18 3 2 Rack Mount Formats 21 3 3 LD900 Location Guidelines 24 3 4 LD900 Mounting 24 3 5 Ventilation Requireme...

Page 3: ...es 60 6 Reference Information 61 6 1 Technical Specifications 61 6 2 Cabling and Connectors 63 6 3 Veripos H70 PC Specifications 65 6 4 LD900 Output Sentences 66 7 Contact Information 80 7 1 VERIPOS H...

Page 4: ...nced signal filtering to mitigate the effects of interference Supports RTK operations Multiple communication interfaces for easy installation Optional ALIGN GNSS heading solution Optional SPAN INS sol...

Page 5: ...tact it would be helpful if the following could be provided Details of the issue or question Vessel name Company name Telephone number Unit User Code VERIPOS hardware type VERIPOS software type Operat...

Page 6: ...obal Positioning System United States commissioned GNSS HDOP Horizontal Dilution of Precision HDR High Dynamic Range Hz Hertz ID Identification IEC International Electrotechnical Commission IMU Integr...

Page 7: ...ntrol Protocol TNC A threaded type of RF coaxial connector TNCM A threaded type of RF coaxial connector male UART Universal Asynchronous Receiver Transmitter UI User Interface Ultra VERIPOS high accur...

Page 8: ...e text is used for hyperlinking to other sections within this document or to external documents or websites Bold italic text is used when display screens are mentioned in text Monospace text is used f...

Page 9: ...ents contained in the WEEE Directive Instructions for disposal of WEEE by users in the European Union Products which have the undernoted symbol located on either the product itself or its packaging in...

Page 10: ...t occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encourag...

Page 11: ...from VERIPOS upon request 1 7 3 2 ROHS The LD900 is in conformity with Directive2011 65 EU of the European Parliament and of the council of 8 June 2011 on the restriction of the use of certain hazard...

Page 12: ...n disclosure agreement Copyright 2020 VERIPOS Limited All rights reserved No part of this Manual and its contents may be reproduced copied re engineered adapted redistributed published commercially ex...

Page 13: ...ids Always use the power connections supplied with the unit Before replacing a fuse disconnect the equipment from the power source 1 9 3 Installation During installation ensure the following DC power...

Page 14: ...system features include Multi channel L band reception supporting all VERIPOS correction services Multi constellation GNSS system with a quad frequency capability Dual antenna inputs for heading Mult...

Page 15: ...nterfacing with the unit Label Connector Description GNSS1 TNC Primary GNSS connector Used to generate the receiver position and default means of L band signal reception GNSS2 TNC Secondary GNSS anten...

Page 16: ...systems BothEthernetports supportIPv4Internet layer and TCP IP transport LAN1 of the LD900 is used for data communications and is shipped with a factory default IP address of 192 168 2 91 Connecting...

Page 17: ...the warranty The supply must be capable of providing enough current to operate the LD900 WARNING To ensure safety only limited power sourceAC DC adapters supplied by VERIPOS should be used with the pr...

Page 18: ...ctronic equipment WARNING No user accessible parts Disconnect the GNSS antenna s prior to servicing the LD900 Only trained personnel are permitted to install service the LD900 and antennas 3 1 Schemat...

Page 19: ...LD900 Installation LD900 Installation and Operations Manual 19 3 1 2 Survey Installation LD900 Model Heading Option Independent L band Option...

Page 20: ...LD900 Installation LD900 Installation and Operations Manual 20 3 1 3 DP Installation LD900M Model Heading Option...

Page 21: ...ided with a Moxa 8 serial port expansion unit and or UHF receiver as required Single format rack mount front The front facia of the single format rack mount as shown in the above image can be removed...

Page 22: ...unt securely mounts two LD900 units in an equipment rack with a removable front facia 3 2 3 LD900 and VERIPOS PC Ethernet Cabling Setup For setups that are supplied with a VERIPOS PC Ethernet cabling...

Page 23: ...pter options Using the left mouse button highlight both Local Area Connection and Local Area Connection 2 then right click and select Bridge Connections Windows will then report the systems as success...

Page 24: ...nit securely to prevent movement Ensure there is easy access to the interfacepanel Do not mount the receiver in confined spaces Ensure sufficient slack remains in unit cabling to allow easy access to...

Page 25: ...ion is performed as this will ensure optimum performance and reliability 3 6 1 Antennas The antennas supplied with the LD900 are detailed below these will vary depending on the LD900 model V560 V86 Pr...

Page 26: ...ount the antenna at the highest possible location away from any obstruction or possible masking If the GNSS antenna does not have good satellite visibility this may lead to system performance degradat...

Page 27: ...DP Survey or Navigation systems 3 6 4 Placement for Heading Antennas Careful considerationfortheplacementof theprimaryand secondaryantennasis requiredtomaximisetheLD900 GNSS heading accuracy 3 6 4 1...

Page 28: ...he UHF receiver The UHF antenna should be ideally 2 metres away from other antennas The metal brackets and metal base of the UHF antennae should be installed below the line of sight of GNSS or L band...

Page 29: ...ion A support wire is used where the cable run has to cross a free space and does not rely solely on cable ties for support Sufficient space is available in the selected cable entry through the bulkhe...

Page 30: ...ect power to the rear of the unit Once the system has booted the Status page will be displayed Status page examples with a LD900L model shown on left LD900M model shown on right 4 2 Front Panel Interf...

Page 31: ...LD900M Models The Status page of LD900 and LD900M models provides a high level system overview by highlighting the state of four LD900 operational items Positioning Corrections GNSS and Heading or IN...

Page 32: ...dicatorStates Beam sync Services enabled SS 32 5dB System using MF SBAS or UHF corrections No beam sync All corrections disabled Available correction sources will be highlighted LD900M models SBAS ena...

Page 33: ...service Latitude DD MM SS SSSS WGS84 Longitude DDD MM SS SSSS WGS84 Height Antenna height WGS84 2d SD Horizontal standard deviation 4 5 3 Status Corrections The Corrections page displays the followin...

Page 34: ...ble NTRIP in use NTRIP configured but not in use NTRIP not configured or L band healthy 4 5 3 3 Status Corrections MF The MF page displays the following information Signal Strength Signal strength in...

Page 35: ...th used and tracked satellites for each constellation the DOP values and the tracking Elevation Mask 4 5 5 Status Heading The Heading page displays the present heading the current heading standard dev...

Page 36: ...page changes canbe made to the PPP Mode and both the NMEA Config and TRINAV Config by clicking on the corresponding Edit options 4 6 1 1 Configuration Positioning Mode Within the Positioning menu page...

Page 37: ...recision and PPP DQI values of the GGA Sentence GGA Precision The GGA Precision value is set to 5 by default but can be set to 5 6 7 or 8 as required PPP DQI The GGA Precision value is set to 5 by def...

Page 38: ...but can be set to a value between 01 and 99 as required 4 6 2 Configuration Corrections Within the Corrections menu page L Band MF UHF SBAS RTK and NTRIP changes can be madeby clicking on the correspo...

Page 39: ...erence in the Appendix Alternatively the VERIPOS software Verichart can be used to assess L band availability by creating work location specific coverage charts Beam Name Coverage 98W North America Gu...

Page 40: ...ng to dampen potential sources of RF distortion at the cost of increased CPU usage It is recommended that if any L band tracking issues are observed intermittent low or no signal this option is enable...

Page 41: ...followed by tick Then use the arrow keys and tick to select one the displayed UHF frequencies Apply right to select Yes and tick to apply the change 4 6 2 4 Configuration Corrections SBAS Within the S...

Page 42: ...tick to select Edit and use the arrow buttons to select Off or RTCMv3 as required Then use the arrow keys and tick to select Apply right to select Yesand tick to apply the required change 4 6 2 6 Conf...

Page 43: ...mined to be the optimal setting Press tick to select Edit and use the arrow buttons to enter a value between 0 default and 89 Then use the arrow keys and tick to select Apply right to select Yes and t...

Page 44: ...played With Baud Rate highlighted use tick to Edit the baud rate if required LD900 COMs 1 3 are set to a baud rate of 115200 by default but support a baud rate between 1200 to 460800 Use the Arrow key...

Page 45: ...firm When selecting None all input and outputs for that particular COM port will cease and the user will be returned to the Configuration Ports page If selecting Input or Output the provided response...

Page 46: ...TCP IP ports These ports are set as TCP IP hosts allowing for client connections There are up to seven ICOM ports available If the single format rack mount system is interfaced the seven ICOM ports wi...

Page 47: ...erial port expansion unit ports and will be available These will be named P1 P7 To select a specific port for input or output use the arrow buttons and tick to select the required P port A P Settings...

Page 48: ...puts for that particular COM port will cease and the user will be returned to the Configuration Ports page If selecting Input or Output the provided response will determine which additional configurat...

Page 49: ...ill be returned to the Configuration Ports page 4 6 5 Configuration Heading LD900 models LD900 and LD900M supplied with heading capability and an enabled heading State within the unit will be capable...

Page 50: ...keys to select Heading Offset followed by tick Then use the arrow buttons and tick to enter a value between 180 00 and 180 00 Use the arrow keys to select Apply right to select Yes and tick to apply...

Page 51: ...y tick Then use the arrow buttons and tick enter an X value within 180 00 Use the arrow keys and tick to select Done then use the arrow keys and tick to select Apply right to select Yes and tick to ap...

Page 52: ...This section details the different menu options and the corresponding settings available 4 7 1 Receiver Details The Details page displays the LD900 User Code and Software Version 4 7 2 Receiver Autho...

Page 53: ...ick on Edit and using the arrow keys and tick select On or Off as required followed by tick Then use the arrow keys and tick to select Apply right to select Yes and tick to apply the change When selec...

Page 54: ...nd To configure an antenna voltage click on Edit and using the arrow keys select Off or On default as required followed by tick Turning Off will result in a loss of tracking as the power to the antenn...

Page 55: ..._archive_data zip When exporting from multiple systems to one USB drive each file must be manually renamed or removed after each export to avoid overwriting a file 4 7 8 Receiver Restart Within the Re...

Page 56: ...nfiguration and Operations LD900 Installation and Operations Manual 56 4 8 Help Support The Help Support page provides details for contacting VERIPOS with support related queries and activation reques...

Page 57: ...e integrity and correct antenna siting For further guidance please see Antenna and Coaxial Cable Installation Manual GNSS Heading Antenna Installation Guide where relevant to installation 5 2 Power Is...

Page 58: ...orrect L band source Check the LD900 Source Antenna selection which defines which RF port should be used for connecting the L band input Change if necessary L band antenna voltage turned off Check Rec...

Page 59: ...ions If this is not the case togglethe Positioning Mode within Configuration Positioning or contact the VERIPOS Helpdesk and request theappropriate service Fault Description Possible Cause Solution No...

Page 60: ...em with the GNSS1 feed Check coaxial connection to GNSS1and inspect antenna and cabling for damage Confirm that there are no potential sources of interference or physical obstructions around the GNSS1...

Page 61: ...Reference Information LD900 Installation and Operations Manual 61 6 Reference Information 6 1 Technical Specifications 6 1 1 Dimensions Note All measurements shown are in millimetres...

Page 62: ...pass Distance 15 cm 6 1 4 Environmental Specifications Operating temperature range 15 C to 55 C Maximum relative humidity 95 non condensing 6 1 5 Electrical Specifications Voltage 12 to 24 VDC Power C...

Page 63: ...nformation LD900 Installation and Operations Manual 63 6 2 Cabling and Connectors 6 2 1 Power Cable DC J1 Pins From To J1 E1 Tag Name 1 FLYING LEAD PWR 2 NC 3 FLYING LEAD PWR PE NC 6 2 2 Power Adapter...

Page 64: ...Reference Information LD900 Installation and Operations Manual 64 6 2 3 COM 1 3 Serial Cables Pin RS232 RS422 1 N C 2 TX TX 3 RX RX 4 N C 5 GND 6 N C 7 RX 8 TX 9 N C...

Page 65: ...dio Output 3 5 mm jack Intel HD Graphics VGA and DVI Display 8 USB Ports 2 0 2 ports front mounted 6 COM Ports 1 port RS232 422 5 ports RS232 PS2 Mouse Keyboard Support with PS2 splitter Front Power S...

Page 66: ...e of utilising more than only the GPS constellation the talker has a set value for each constellation For sentences where the data relates to multiple constellations the ID GN will be found Not all NM...

Page 67: ...tude hemisphere dddmm mmmmm Longitude of position b E or W longitude hemisphere q GPS Quality indicator 0 invalid 1 GPS SPS 2 DGNSS fix 4 Fixed RTK 5 Float RTK PPP 6 Dead Reckoning 7 Manual Input Mode...

Page 68: ...l DGNSS corrections b bb Standard deviation of semi major axis of error ellipse meters c cc Standard deviation of semi minor axis of error ellipse meters d dddd Orientation of semi major axis of error...

Page 69: ...will be output in the string d d PDOP e e HDOP f f VDOP hh Checksum 6 4 6 GSV Sentence The NMEA GSV sentence provides information relating to the number of satellites SV in view satellite ID numbers...

Page 70: ...I Positioning mode indicator A Autonomous D Differential E Estimated Dead reckoning M Manual N Data not valid hh Checksum 6 4 8 VTG Sentence The NMEA VTG sentence provides the actual course and speed...

Page 71: ...order of PRN numbers in GPGSA cc GNSS System ID see tables below for further explanation dd Ranging SignalID see tables below for further explanation hh Checksum GNSS Constellation GPS GNSS System ID...

Page 72: ...de direction N or S dddmm mmmmmmm Longitude of position c Longitude direction E or W dd ddd Speed over the ground knots eee e Course over ground degrees True ddmmyy Current date fff f Magnetic variati...

Page 73: ...3 Latitude A13 dm dd mm mmmmmN space between D and M Longitude A14 dm dd mm mmmmmE space between D and M Height F7 3 m Antenna height above ellipsoid See comment 4 HDOP F5 1 Horizontal Dilution of Po...

Page 74: ...the probability that the MDE would be detected and the significance level used a The values recommended by UKOOA should be used see UKOOA Guidelines for the use of Differential GPS in offshore survey...

Page 75: ...Height F7 3 m Antenna height above ellipsoid See comment 3 HDOP F5 1 Horizontal Dilution of Position VDOP F5 1 Vertical Dilution of Position Unit Variance F9 3 m2 See comment 4 Variance Latitude F10 6...

Page 76: ...are elements from the Variance Covariance matrix of the position fix computation un scaled a Unit Variance currently unavailable and will be a NULL field for the moment 5 The External Reliability is t...

Page 77: ...Manual 77 8 TRINAV V4 Correction Source Codes Type Code Meaning L L band only always followed by 1 i e L1 M L band multi channel followed by number of links tracked e g M3 I Internet source always fo...

Page 78: ...ayed with spaces dd mm mmmmm 57 Latitude Hemisphere Indicator N or S 58 71 Longitude Longitude displayed with spaces dd mm mmmmm 72 Longitude Hemisphere Indicator E or W 73 79 Altitude above MSL Anten...

Page 79: ...f the error ellipse in metres 172 177 Orientation Of Semi Major Axis of Error Orientation of the semi major axis degrees from true North 178 179 F Test A test applied to the Unit Variance P Pass F Fai...

Page 80: ...upport issues should be initially addressed to the VERIPOS Helpdesk Where appropriate the Helpdesk will refer issues to the regional operations and engineering teams 7 1 VERIPOS Helpdesk Details VERIP...

Page 81: ...IPOS V560 Combined GNSS L band Antenna Fitted with an extended filter designed for Inmarsat rejection L band GPS GLONASS 1525 1610 MHz GPS L2 GLONASS L2 1160 1252 MHz LNA Gain 45db DC Voltage input 3...

Page 82: ...nna North alignment reference V560 ARP North Alignment Reference The table below details the V560 North East and Up phase centre values for the GNSS L1 and L2 frequencies Relative to Antenna Reference...

Page 83: ...1 20 3 92 Impedance 50 Capacitance pF ft pF m 23 9 78 4 Inductance uH ft uH m 0 060 0 20 Shielding effectiveness dB 90 DC resistance Inner conductor Outer conductor 1000 ft km 1000 ft km 1 39 1 65 4 6...

Page 84: ...er conductor Outer conductor 1000 ft km 1000 ft km 3 2 3 89 10 5 12 8 Voltage withstand VDC 1500 Jacket spark Vrms 5000 Peak power kW 5 6 8 2 2 2 Mechanical Specifications Performance Property Units U...

Page 85: ...ta Bits 8 Parity N Stop Bits 1 NMEA Message Output COM1 NONE NMEA Message Output COM2 NONE NMEA Message Output COM3 NONE NMEA Precision 5 NMEA DQI 5 NMEA Rate 1 TRINAV Version V3 TRINAV Nav Point 1 LA...

Page 86: ...Appendix LD900 Installation and Operations Manual 86 8 4 L band Coverage Map...

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