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Comtech EF Data DST Operator's Manual

Digital satellite terminal system
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DST
Digital Satellite Terminal System
Operator's Guide
Part Number MN/DST.IOM Revision 1

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Summary of Contents for Comtech EF Data DST

  • Page 1 Digital Satellite Terminal System Operator’s Guide Part Number MN/DST.IOM Revision 1...
  • Page 3 Changes to Table 3-2. LO MIX and Mod Spectrum Settings for Modulator and BUC Date: May 12, 2004 Document: DST Digital Satellite Terminal System Operator’s Guide, Rev. 1, dated December 5, 2003 Part Number: MN/DST.EA1 Collating Instructions: Attach this page to page 3-4 Comments: The following changes provide updated information for Table 3-2.
  • Page 5 Comtech EF Data Documentation Update Subject: Added figure showing Ku-BUC Spar Mount, Typical NJRC Date: September 20, 2004 Document: DST Digital Satellite Terminal System Operator’s Guide, Rev. 1, dated December 5, 2003 Part Number: MN/DST.EB1 Collating Instructions: Attach this page to page 3-1 Comments: Added figure for Ku-BUC Spar Mount, Typical NJRC.
  • Page 7 Comtech EF Data Documentation Update Subject: Added figure showing Ku-BUC Spar Mount, Typical Terrasat Date: September 20, 2004 Document: DST Digital Satellite Terminal System Operator’s Guide, Rev. 1, dated December 5, 2003 Part Number: MN/DST.EC1 Collating Instructions: Attach this page to page 3-1 Comments: Added figure for Ku-BUC Spar Mount, Typical NJRC.
  • Page 9 Comtech EF Data Documentation Update Subject: Added figure showing C-Band Spar Mount, Typical Date: September 20, 2004 Document: DST Digital Satellite Terminal System Operator’s Guide, Rev. 1, dated December 5, 2003 Part Number: MN/DST.ED1 Collating Instructions: Attach this page to page 3-1 Comments: Added figure for C-Band Spar Mount, Typical.
  • Page 11 Comtech EF Data is an ISO 9001 Part Number MN/DST.IOM Registered Company. Revision 1 December 5, 2003 Copyright © Comtech EF Data, 2003. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161.
  • Page 12 4. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/packaging. 5. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.) For more information regarding the warranty policies, see Warranty Policy, p. xiii.

  • Page 13: Table Of Contents

    Digital Satellite Terminal System Revision 1 Preface MN/DST.IOM Table of Contents CHAPTER 1. INTRODUCTION......................1–1 DST Overview ..........................1–1 Description........................... 1–3 1.2.1 Description of Indoor Unit......................1–4 1.2.2 Description of Monitor and Control (M&C) ................1–4 Features and Options ......................... 1–4 1.3.1...
  • Page 14 Digital Satellite Terminal System Revision 1 Preface MN/DST.IOM BUC Installation .......................... 3–6 3.5.1 Mounting Kits..........................3–6 3.5.2 Installation ..........................3–8 CHAPTER 4. LOW NOISE BLOCK DOWN CONVERTER..............4–1 Description........................... 4–1 4.1.1 Options ............................4–2 LO, Mix and Spectrum Settings (LNB) ..................4–3 4.2.1...
  • Page 15 Figures Figure 1-1. Modem with Typical LNB and a 2 Watt BUC..............1–2 Figure 1-2. DST System Block Diagram ....................1–3 Figure 2-1. IDU Installation with Optional KT/6228-1 Rear Mounting Bracket........2–4 Figure 2-2. Typical ODU Unit Installation....................2–6 Figure 3-1.
  • Page 16 Digital Satellite Terminal System Revision 1 Preface MN/DST.IOM Tables Table 1-1. Specifications........................... 1–5 Table 1-2. IFL Cable Specifications ......................1–5 Table 2-1. Mounting Components......................2–2 Table 2-2. Optional: Mounting Kit, KT/6228-1 (IDU to Rack)..............2–3 Table 2-3. TX Cable Specification (Type N Male Connectors) ..............2–5 Table 2-4.
  • Page 17 About this Manual This manual provides basic installation and operation information for the Comtech EF Data DST Digital Satellite Terminal System. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the DST System.
  • Page 18 Reporting Comments or Suggestions Concerning this Manual Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the Comtech EF Data Customer Support Department: techpubs@comtechefdata.com...
  • Page 19 60 watts. USES The DST is fitted with two fuses, one each for line and neutral connections. These are contained within the body of the IEC power connector, behind a small plastic flap. For continued operator safety, always replace the fuses with the correct type and rating.
  • Page 20 The equipment is not designed for connection to power system that has no direct connection to ground. The DST is shipped with a line inlet cable suitable for use in the country of operation. If it is necessary to replace this cable, ensure the replacement has an equivalent specification.
  • Page 21 Preface MN/DST.IOM EMC (Electromagnetic Compatibility) In accordance with European Directive 89/336/EEC, the DST has been shown, by independent testing, to comply with the following standards: Emissions: EN 55022 Class B - Limits and methods of measurement of radio interference characteristics of Information Technology Equipment.
  • Page 22 Digital Satellite Terminal System Revision 1 Preface MN/DST.IOM • Connections to the transmit and receive IF ports (Type N and Type F, female, connectors) should be made using a good quality coaxial cable - for example RG58/U (50Ω) or RG59/U (75Ω).
  • Page 23 Disclaimer Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-to- use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or related documents are believed...
  • Page 24 Digital Satellite Terminal System Revision 1 Preface MN/DST.IOM This page is intentionally left blank.

  • Page 25: Chapter 1. Introduction

    This equipment is designed for maximum reliability and performance in C- and/or Ku- Band applications. DST Overview The Digital Satellite Terminal (DST) (Figure 1-1) consists of three major components: iProSat L-Band Satellite Modem – provides conversion of data to L- Internet Enabled L-Band Satellite Modem –...

  • Page 26: Figure 1-1. Modem With Typical Lnb And A 2 Watt Buc

    Digital Satellite Terminal System Revision 1 Introduction MN/DST.IOM Figure 1-1. Modem with Typical LNB and a 2 Watt BUC 1–2...

  • Page 27: Description

    A block diagram of the DST system is shown in Figure 1-2. Note: The antenna and the Ortho Mode Transducer (OMT) are not part of the DST system. The Transmit Reject Filter (TRF), Receive Reject Filter (RRF), and L-Band Inter-Facility Link (IFL) cables are optional equipment as are mountiits.

  • Page 28: Description Of Indoor Unit

    In addition, the modem provides the M&C interface for the DST system, a 10 MHz reference, and power for both the BUC and the LNB. The DST employs a user- friendly M&C interface that is accessible from either the front panel of the indoor unit (IDU) or its remote port.

  • Page 29: Options

    Digital Satellite Terminal System Revision 1 Introduction MN/DST.IOM 1.3.2 Options The DST includes the following options: How Enabled IDU Options Hardware + Fast See modem manual for additional details Hardware 24 VDC 100W AC ODU (BUC) Power Supply Hardware 48 VDC 150W AC ODU (BUC) Power Supply...
  • Page 30 Digital Satellite Terminal System Revision 1 Introduction MN/DST.IOM This page is intentionally left blank. 1–6...

  • Page 31: Chapter 2. Indoor Unit Installation

    This chapter provides installation and IDU mounting instructions for the DST. Unpacking The DST and manual are packaged in pre-formed, reusable, cardboard cartons containing foam spacing for maximum shipping protection. Do not use any cutting tool that will extend more than 1 inch (2.5 cm) into the container.

  • Page 32: Equipment Inspection

    Table 2-1. Mounting Components Description Description DST Components Cable Assembly – Transmit (Optional) Comtech EF Data Part No. CA/6357-50, - 100, -150, -175, or -200 Installation and Operation Manual Cable Assembly – Receive (Optional) Comtech EF Data Part No. CA/9645-50, -...

  • Page 33: Mounting Kit

    Digital Satellite Terminal System Revision 1 Installation MN/DST.IOM 2.2.2 Mounting Kit Table 2-2. Optional: Mounting Kit, KT/6228-1 (IDU to Rack) Part Number Description FP/6138-1 Bracket, Rear Support HW/10-32x1/2RK Bolt, #10 Rack HW/10-32X1/4 SHC Screw, Socket 10-32 x 1/4inch Installation 2.3.1...

  • Page 34: Figure 2-1. Idu Installation With Optional Kt/6228-1 Rear Mounting Bracket

    Digital Satellite Terminal System Revision 1 Installation MN/DST.IOM Equipment Rack Mounting Rail #10 Socket head screw BRACKET BOLTS Support Bracket * Note: Components of mounting kit KT/6228-1 Figure 2-1. IDU Installation with Optional KT/6228-1 Rear Mounting Bracket. 2–4...

  • Page 35: Ifl Cable Installation

    TX and a Type F connector for RX and use the cables listed above. 3. Equivalent cables/supplies may be used. 4. The DST is manufactured to accommodate a TX attenuation of 20 dB maximum between the IDU and ODU, and a RX attenuation of 25 dB maximum between the IDU and RX LNB.

  • Page 36: Cable Installation

    Digital Satellite Terminal System Revision 1 Installation MN/DST.IOM 2.3.3 Cable Installation Note: Prior to connecting the cables, ensure that the ODU and LNB voltages have been switched off. 1. Connect RX L-Band cable from the LNB to the IDU CP3 connector.

  • Page 37: Chapter 3. Block Up Converter

    Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM Chapter 3. BLOCK UP CONVERTER This chapter provides the description, operation, specification, and installation of a Block Up Converter (BUC) Description of the Block Up Converter The Block Up Converter (BUC) translates the L-Band carrier output from the IDU (in the 950 to 1750 MHz range) to C- or Ku-Band frequencies typically between: •...
  • Page 38 Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM This page is intentionally left blank. 3–2...

  • Page 41: Buc Envelope Dimensions And Mounting

    Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM BUC Envelope Dimensions and Mounting Notes: 1. Dimensions are listed in inches and centimeters are in parentheses. 2. This figure is a typical configuration. For specific applications, contact Comtech EF Data, Customer Support department.

  • Page 42: Odu Installation

    Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM ODU Installation Refer to Figure 3-2. 1/2-inch Box Wrench (or adjustable) Box Wrench (or adjustable) 5/16-inch 7/16-inch Box Wrench (or adjustable) SAE Allen 7/64-inch Metric Allen Wrench Phillips Screw Driver...

  • Page 43: Figure 3-2. Mounting Kit, Kt/9928-1

    Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM Table 3-5. Optional: C- and Ku-Band Mounting Kit, KT/9928-1 (BUC to Feed Horn) Item Part No. Nomenclature Remarks ** FP/9026-1 Bracket, QP FP/BR9927-1 Bracket, Upper Used with Option B BUC...

  • Page 44: Installation

    Digital Satellite Terminal System Revision 1 Block Up Converter MN/DST.IOM 3.5.2 Installation To install the BUC to the antenna: 1. If installed: Remove protective covers from the antenna OMT and SSPA. After removing the protective covers, ensure that no foreign material or moisture enters the antenna waveguide or BUC.

  • Page 45: Description

    Chapter 4. LOW NOISE BLOCK DOWN CONVERTER This chapter provides the description and operation for a LNB. Description The LNB amplifies the input Ku-Band signal and down converts it to L-Band in the range of 950 to 1750 MHz (there may be instances that the L-Band range = 950 to 1450 MHz ).

  • Page 46: Options

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM 4.1.1 Options Hardware IFL Cables Hardware Externally Referenced from IDU or Internally Referenced Hardware TX Reject Filter Hardware Mounting Kits 4–2...

  • Page 49: Figure 4-1. For C-Band: Lnb Dimensional Envelope

    Refer to Figure 4-1 for the LNB dimensional envelope drawing. Notes: 1. Dimensions are listed in inches and centimeters are in parentheses. 2. This figure is typical of the LNB configurations. For specific applications, contact Comtech EF Data, Customer Support department. (3.00) (1.69) (1.50) (.54)

  • Page 50: Figure 4-2. For Ku-Band : Lnb Dimensional Envelope

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM 2.563 (6.51) 5.125 (13.02) 1.563 (3.97) Figure 4-2. For Ku-Band : LNB Dimensional Envelope 4–6...

  • Page 51: C-Band

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM LNB Installation 4.4.1 LNB Tooling Refer to Figure 4-1. 1/2-inch Box Wrench (or adjustable) 5/16-inch Box Wrench (or adjustable) 7/16-inch Box Wrench (or adjustable) 7/64-inch SAE Allen Metric Allen Wrench...

  • Page 52: Mounting Kits

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM 4.4.4 Mounting Kits Table 4-5. Optional: C-Band Waveguide ASB Kit, KT/2721-1 Part Number Description 03P1079 Bolt, Hex, 1/4-20X1, SS 32D1002 Gasket, Half, Waveguide CPR229 32P1040 Gasket, Full, Waveguide CPR229...

  • Page 53: Trf Installation

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM Note: Flat washers maybe omitted if there is interference with assembly. 4.4.6 TRF Installation To install the TX Reject Filter to the antenna OMT: 1. If installed; remove protection covers from the OMT and TRF.

  • Page 54: Cable Installation

    Digital Satellite Terminal System Revision 1 Low Noise Block Converter MN/DST.IOM Cable Installation Care should be exercised in cable installation. Install the cables using the most direct route and secure with clamps and ties. Avoid all sharp bends. Replacement of the cables can be the result.

  • Page 55: Chapter 5. Operation

    Replacement of a component(s) may be the result. CAUTION 5.1.1 Prior to Turning On Power Note: Ensure DST system is installed properly and all connections all secure, except the L-Band TX and RX IF connectors which are initially disconnected. Observe the following steps: Step...

  • Page 56: Initial Power Up - Modem Only

    Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM 5.1.2 Initial Power Up – Modem Only Initially, the modem is set up and checked out and not connected to the IFL cables: Note: Refer to the specific modem manual for programming information.

  • Page 57: Lo, Mix And Spectrum (Inversion) Settings

    • For BUC only. Refer to Chapter 3, for the LO frequencies for BUCs provided by Comtech EF Data, along with the MIX(+ or -) and Spectrum (Inversion) for several common frequency bands. •...

  • Page 58: Applying Power To The Buc

    CAUTION 2. If the ODU voltage is not correct, DO NOT connect the TX-IF Cable to the modem or damage may result. Contact Comtech EF Data Customer Service department. 3. Ensure TX and RX L-Band cables are not connected. After the modem is checked out, then configure to operate with the ODU.

  • Page 59: Initial Operation Of The Modem With The Odu And Lnb

    Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM TX Side Setup: Step Selection / Programming Menu Location Disconnect BUC. Determine the ODU voltage required by the BUC and record for reference Turn the ODU Power = ON and Verify the BUC/ODU Voltage is correct.
  • Page 60 Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM This page is intentionally left blank. 5–6...

  • Page 61: Appendix A. Selecting Lnbs For Use With L-Band Modems

    This chapter provides guidelines for choosing LNBs for use the DST Terminals. Introduction An option added to the DST Digital Satellite Terminals is the selection of either INT or EXT REF LNBs. The 10 MHz reference for an EXT REF LNB is delivered up the coaxial cable, while the reference for an internally referenced unit is contained within the unit.

  • Page 62: Carrier Spacing And Frequency Uncertainty

    Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM A.1.2 Carrier Spacing And Frequency Uncertainty When there is no carrier uncertainty, the carrier spacing is usually 1.3 * SR, where SR is the symbol rate of the modem. More generally, the carrier uncertainty is: fv ≤...

  • Page 63: Frequency Uncertainty Budget

    Digital Satellite Terminal System Revision 1 Operation MN/DST-IOM A.1.3 Frequency Uncertainty Budget An example of a typical frequency uncertainty budget for a Ku-Band link with a 3 ppm LNB is expressed by: ± 309 Hz BUC with LO = 15,450 MHz, ±0.02 ppm ±...

  • Page 64: Figure A-2. Minimum Symbol Rate Versus Satellite Uncertainty For Ku-Band And C-Band

    Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM The Ku-Band error budget with the 3 ppm LNB was presented earlier, and the budget for an externally referenced LNB at 0.02 ppm follows: ± 309 Hz BUC with LO = 15,450 MHz, ±0.02 ppm ±...

  • Page 65: Uncertainty For 1 Ppm Modem And 0.02 Ppm Buc

    Digital Satellite Terminal System Revision 1 Operation MN/DST-IOM A.1.3.2 Uncertainty for 1 ppm Modem and 0.02 ppm BUC In multi-carrier applications, the carriers from several L-Band modems operate through an LNB and BUC. In these situations the modem does not supply the high stability 0.02 ppm frequency reference or the ODU (BUC) power supply.
  • Page 66 Digital Satellite Terminal System Revision 1 Operation MN/DST.IOM Minimum Symbol Rate (vs) Satellite Uncertainty BUC = +/- 0.02 ppm, Modem +/- 1.0 ppm Ku-Band LNB = +/- 3 C-Band LNB = +/- 3 ppm Ku-Band or C-Band LNB = +/- 0.02 ppm Satellite Uncertainty (+/- kHz) Figure A-4.

  • Page 67: Index

    Description of Indoor Unit, 1-4 LO, Mix and Spectrum (Inversion) Settings, 5-3 Description of Monitor and Control (M&C), 1-4 Low Noise Block Down Converter, 4-1 DST Overview, 1-1 Low Noise Block (LNB) Converter, 4-5 Equipment Inspection, 2-2 Mounting Kit, 2-3, 3-6, 4-8 Features, 1-4 ODU Installation., 3-6...
  • Page 68 Revision 1Digital Satllite Terminal System Satellite Modem Revision 1 Index MN/DST300.IOM Prior to Turning On Power, 5-1 TRF Installation, 4-9 Selecting LNBs for the Use with L-Band Modems, A-1 Specifications, 1-5 Unpacking, 2-1 i–2...
  • Page 69 METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.01094 6.214 x 10 0.01 — — 1 inch 2.540 — 0.08333 0.2778 1.578 x 10 0.254 — 25.4 1 foot 30.480 12.0 —...
  • Page 70 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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