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Patriot 1.2M MVSAT Installation & Assembly Instructions Manual

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ANTENNA SYSTEMS
1.2M MVSAT Antenna
INSTALLATION &
ASSEMBLY INSTRUCTIONS

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Summary of Contents for Patriot 1.2M MVSAT

  • Page 1 ANTENNA SYSTEMS 1.2M MVSAT Antenna INSTALLATION & ASSEMBLY INSTRUCTIONS...
  • Page 2 IN NO EVENT SHALL PATRIOT ANTENNA BE LIABLE FOR ANY LOSS OF PROFITS, LOSS OF USE, INTER- RUPTION OF BUSINESS, OR INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY KIND. In no event shall PATRIOT ANTENNA be liable for damages in an amount greater than the purchase price of the equipment.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1- Overview 1.1 Technical Description SECTION 2- Installation and Set-Up 2.1 General 2.2 Installation to Vehicle 2.3 Controller Installation 2.4 Controller/Positioner Verification Tests 2.5 Elevation Stow Switch Setting 2.6 Final Calibration of System SECTION 3- Azimuth Positioning System 3.1 Azimuth Bearing 3.2 Azimuth Gear Box 3.3 Azimuth Motor...

  • Page 4: Section 1- Overview

    SECTION 1- OVERVIEW 1.1 TECHNICAL DESCRIPTION The 1.2M VSAT Antenna System is an elevation over azimuth positioner featuring the simple, rugged Roto-Lok drive system for the azimuth which produces very low backlash, high stiffness and high reliability and driven by a low backlash, gear box with a DC motor.

  • Page 5: Section 2- Installation And Set-Up

    CONTROLS The system will interface with a jog controller which allows remote control of the system. Each axis position is displayed as well as limit indications. The unit will also interface with a full function controller with features such as automatic stow, GPS/flux-gate input and automatic satellite pointing and tracking.

  • Page 6: Controller Installation

    2.3 CONTROLLER INSTALLATION Install controller into electronics rack. Connect cables to rear making sure P1 and P2 are connected to correct sockets. (P1 to J1 AND P2 to J2) Confirm controller voltage and fuse are correct, if not, convert to correct voltage by following instructions in the controller manual Section 2.2.1.

  • Page 7: Final Calibration Of System

    2.5 CONTROLLER/POSITIONER VERIFICATION TEST CONT. Watch reflector surface approach feed horn. Press STOP when reflector is within 2” of feed horn. Jog down until reflector presses on rubber padding on feed housing. Adjust stow limit switch if necessary by bending lever. Stow switch is on east side with long lever. (East is the left side as viewed from behind the reflector) 2.6 FINAL CALIBRATION OF SYSTEM Check AZ ZERO position on roof.

  • Page 8: Azimuth Motor

    3.3 AZIMUTH MOTOR The azimuth drive motor is a 24 DC motor with integral 30:1 spur gear train. (See fig on pg.6) The motor armature rotates at up to 3000 rpm causing a high frequency noise that will vary depending of the loading condition of the motor.

  • Page 9: Azimuth Position Feedback

    3.5 AZIMUTH POSITION FEEDBACK The azimuth position feedback is produced by a 10 turn, 1K-ohm potentiometer driven by a gear located on kingpin post . (Fig. Below) Since the Roto-Lok drive has no backlash, the position feedback is as accurate (1%) as the resolution (.3°) and accuracy of the potentiometer and the backlash between the potentiometer and the azimuth capstan.

  • Page 10: Section 4- Elevation Positioning System

    3.6 AZIMUTH STOW AND LIMIT SWITCHES CONT. Rotation Direction Convention: + is clockwise (CW) viewed from above the mount is counter clockwise (CCW) viewed from above the mount NOMINAL AZMUITH LIMITS‘ Model Limits 1200MVSAT (With 400° AZ) +200° / -200° 120MVSAT (With 360°...

  • Page 11: Elevation Position Feedback

    4.3 ELEVATION POSITION FEEDBACK The elevation position feedback is produced by an electronic inclinometer located in the feed box. (See fig below) No adjustment or maintenance is required. The inclinometer is electronically zeroed in the controller. See Section 2.3 in the controller Manual. 4.4 ELEVATION STOW AND LIMIT SWITCHES The elevation stow switch is mounted in the Pol cover.

  • Page 12: Polarization Position Potentiometer

    Since the low backlash chain drive isolates the feed from the motor, no brake is required. No maintenance of the Polarization motor/assembly is required. The polarization drive can be replaced only by a complete unit including the motor, motor sprocket /gear, chain, elevation inclinometer, potentiometer and gear, and drive sprocket.

  • Page 13: Section 6- Annual Inspection And Maintenance

    SECTION 6 - MAINTENANCE 6.1 GENERAL The 1.2 meter Mobile VSAT is designed such that any wear should never degrade performance below specifica- tions and essentially no maintenance will ever be required. However, since it is impossible to ascertain or test for all possible environments, the following check up is recommended each year.
  • Page 14 MANUAL AZIMUTH The 1.2MVSAT comes with a manual drive on the azimuth if needed. The manual drive is located on the lower right back of casted mount underneath cover plates (See attached figure.) Use a 1/2” socket with extension (See attached figure.)

  • Page 15: Section 7- Interface Drawing

    SECTION 7- Interface Drawing...

  • Page 16: Section 8- Specifications

    SECTION 8- Specifications Receive Trasmit ELECTRICAL Frequency 11.7-12.2 GHz 14.0-14.5 GHz Gain (Midband) 42.0 dBi 43.5 dBi VSWR 1.30:1 1.30:1 Beamwidth (degrees) -3 dB -10 dB First Sidelobe Level (+/- 2 dB) -20 dB -20 dB Radiation Pattern Spacing Meets Current FCC requirements for2 deg. Antenna Noise Temp @ 30 deg Elev.

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