Advantech INTRAC-305 user manual Technical Description, Antenna Motion Limits

Page 74

TECHNICAL DESCRIPTION

INTRAC-305

 

The Basic algorithm available in the Rapid Model Generation

 

table is not of NORAD origin. It has none of the

 

embellishments found in the NORAD routines and is meant for

 

test purposes only.

 

Once the orbital model has been built using the ephemeris

 

data the INTRAC tracks the satellite from it and updates and

 

improves it over the following hours and days.

PROGRAM TRACK

The IESS-412 and NORAD data can also be used by INTRAC

 

to calculate the satellite’s path which is then used for a simple

 

Program Track operation.

 

The selections available in Models - program Track are the

 

same as are available in Rapid Model Generate. On selecting

 

the required algorithm and pressing ENTER the INTRAC

 

enters Program Track mode.

 

Program Track is an open loop method of tracking and as such

 

is unable to correct for any transducer errors or distortions to

 

the antenna caused by wind.

RESERVE MODEL

Once the orbital model has been built the INTRAC tracks the

 

satellite extremely accurately by continuously monitoring the

 

satellite’s position and updating the model. When the beacon

 

signal is not present INTRAC can still track accurately by

 

predicting the satellite’s position from the model. However if

 

the beacon signal is lost for more than 72hrs INTRAC deems

 

the model to be no longer valid. In such a situation INTRAC

 

can fall back to a Reserve Model. This is a Program Track

 

model built from either the IESS-412 or the NORAD data. The

 

selection is made in Models - Reserve Model. Assuming the

 

appropriated data has been loaded and is valid INTRAC will

 

automatically fall back to this model when it can no longer

 

predict accurately.

CLEAR MODELS

The “Clear Models” menu is used to clear one or more of the

 

INTRAC Model, the IESS-412 Model or the NORAD model.

 

Clearing the INTRAC Model clears the current satellite model.

 

Selecting Auto Continue after this clearing will cause the

 

INTRAC to enter Learning Mode.

 

Clearing the IESS-412 or NORAD Models simply marks the

 

ephemeris data as being no longer valid. Selecting IESS-412

 

or NORAD for Rapid Model Generate or Program Track will

 

cause the menu to jump to the Edit IESS or NORAD data

 

menus for new data to be input. Also clearing the data will

 

mean that Reserve Model will not function.

ANTENNA MOTION LIMITS

The INTRAC-305 has user setable software limits to confine

 

the antenna movement. If a limit is reached in an automatic

 

mode drive is inhibited, the INTRAC emters Standby Mode, a

 

primary alarm is raised and the System Alarm indicator is

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INTRAC-305 MANUAL - Issue 3.2

© 2011 Advantech Wireless

Page 73 Page 75
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Page 73 Page 75
Contents INTRAC-305 PrefaceManual Sections PrefacePreface INTRAC-305 Contents INTRAC-305 SubjectContents InstallationIntroducing the INTRAC-305 Introduction INTRAC-305Introduction Retro FittingIquick Start Guide INTRAC-305 Quick Start Guide Electrical SafetySafety INTRAC-305 Do not Place in Normal Garbage or in a FireEMC SafetyMechanical Page Required Mechanical Characteristics of the Antenna System Specification & OptionsSpecification & Options Specification Specification & Options INTRAC-305Do not Mount by Front Panel Lugs Alone Voltage Serial InterfacesINTRAC-305 Deliberately blank Front Panel Operating the INTRAC-305Operation Operation INTRAC-305 Menu StructureNext Field System SetupFunction EnterAlphabetical Index of Menus INTRAC-305 Home HomeStandby StandbyNEW Mode Goto Auto Continue New ModelHome NEW Mode Menu KEY MANUAL/STOWGoto Position Operation SearchGoto Satellite Auto Continue Auto NEW Model Remote Terminal Diagnostics Must be Function ConfigurationWhen IT is Required to Control the Intrac from Switched OFFBeacon Frequency Home Function Menu KEY 6 EnterHome Function Menu KEY 6 X2 Enter Config Menu KEY 6 X2 EnterEdit Satellite Table Soft Limits Drive in Manual Mode is not Inhibited bySoft Limits X2 Setup X2 Resolver SetupDiagnostics on / Diagnostics OFF Diagnostics OnBeacon Threshold Contrast & Brightness Home Function System Setup EnterSystem Setup Enter Home Function System Setup Fine Tune senseFine Tune Offsets Azimuth true Elevation invStation CO-ORDINATES Date & Time Time Rate Correction AZ & EL Beamwidth Stow Setup Select Stow USE UsedFitted Options Models Enter Rapid Model GenerateHome Function Models Enter Models Menu KEY 6 Enter Program TrackHome Function Models Menu KEY 6 Enter Reserve Model Home Function ModelsINTRAC-305EDIT IESS-412 Edit Norad Buffer Edit Star Track Edit Satellite Table Clear Models Intrac IESS-412Show Alarms MoreREMOTE/LOCAL Normal Operation Primary Alarms Alarms & ErrorsAlarms & Errors Alarm Outputs Alarms & Errors INTRAC-305Secondary Alarms Recovering from AlarmsPower Failure INTRAC-305 Alarms & ErrorsErrors IESS-412 DataDeliberately blank Technical Description Technical DescriptionTechnical Description INTRAC-305 Modes Auto normal operating mode Technical DescriptionWhere the satellite’s position is only roughly known search 72hrs, the beacon is still not producing a useful signal*Using either IESS-412 or Norad data. see Reserve Model High accuracy of the model the tracking is within 0.05dBManually or in search mode see below. To commence Enters Standby. The antenna can then be peaked usingManual mode or search mode see below before selecting During those scans and phase two of the search isUsing IESS-412 or Norad Data Than two places of decimals LMO value is given in the range -180to +180.XNDD60 EpochXNDT20 BstarAntenna Motion Limits Tracking Signal Axes PositionTechnical Description INTRAC-305 Installation InstallationInstallation INTRAC-305 Connections generalRear Panel Layout InstallationConnections Block Diagram Connector PIN Allocations Intractm 305 Resolvers ConnectorSignals to the Motor Drive Cabinet Motor ControlRemote Port Stp-Trk Inputs / Alarm outputsCommunication Ports Test Port 1 & 2 RS423 Test Port 1 & 2 RS422Data can be monitored during remote operation by using a Second PC connected to Test PortINTRAC-305 Installation Tracking Signal Input Tracking signal may be provided as a dc voltage from anOperational Checks Emergency Stop switch is releasedAppropriate drive command re-instated Manual OperationRemote Control Auto OperationFault Finding Fault FindingTo power up Fault Finding INTRAC-305Fault Symptoms Intrac doesn’t appearTWO Part Retaining PIN Switch consists of two normally closed N.C. contacts System Alarm indicator to illuminate and the Intrac toEnter Standby Mode Pressing the switch opens both sets of contacts. The switchNo Antenna Drive ExampleFault Finding INTRAC-305 Warranty Warranty & RepairWarranty & Repair Repair ServiceCustomer either by a Purchase Order or through a Repair AMT Limited will investigate the fault, determine the mostEffective repair technique and issue a repair cost estimate Contract
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