Advantech AMT-73 Installation And Operation Manual
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Advantech AMT-73 Installation And Operation Manual

Amt-70 series. l-band satellite modem 32k - 40 msymbol bpsk, qpsk, oqpsk, 8psk, 16qam
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AMT-70/AMT-73/AMT-75 Installation and Operation
AMT-70 Series
(with AMT-73 Supplement)
(with AMT-75 Supplement)
L-Band Satellite Modem
32k - 40 MSymbol
BPSK, QPSK, OQPSK, 8PSK, 16QAM
Installation and Operations Manual
Version 2.9- Apr 05, 2006
1

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Summary of Contents for Advantech AMT-73

  • Page 1 AMT-70/AMT-73/AMT-75 Installation and Operation AMT-70 Series (with AMT-73 Supplement) (with AMT-75 Supplement) L-Band Satellite Modem 32k - 40 MSymbol BPSK, QPSK, OQPSK, 8PSK, 16QAM Installation and Operations Manual Version 2.9- Apr 05, 2006...
  • Page 2 AMT-70/AMT-73/AMT-75 Installation and Operation PREFACE Thank you for purchasing the world’s first 16 kbps to >100 MBits L-Band digital satellite modem. This document describes the installation, operation, and maintenance of the AMT-70 series satellite modem. The following information provides the document part number, revision, the copyright notices, along with the pertinent FCC, English, German, and French compliance, and the serviceability of the modem.
  • Page 3 AMT-70/AMT-73/AMT-75 Installation and Operation Changed RS-485 pin-out to reverse TX+ & TX- Created Appendix A from previous sections of manual regarding Antenna & cable info Added Appendix B, (S+N)/N Conversion Charts Jan 19, 2005 Added Mod and Demod Fault Status and pin-outs Changed ifrxclock in Packet Protocol section (Chapter 12) to read “0=internal;...
  • Page 4 AMT-70/AMT-73/AMT-75 Installation and Operation Real Time Clock Support added. ASI interface VBR support DVBS2S – DVBS2N support New TPILOT commands for DVBS2S – DVBS2N New eTPC code rates ¾, 7/8, 19/20 Dec 18, 2005 RPOWER support for AMT73L Buffer Re-center Support for RS530+1*HSSI card.
  • Page 5 AMT-70/AMT-73/AMT-75 Installation and Operation Copyright Notices: Copyright ©2004-2005 by AdvantechAMT. All rights reserved. This manual may not be reproduced or disclosed in whole or in part by any means without the written consent of AdvantechAMT, Inc. Customer Support: You can contact AdvantechAMT for customer support at the following office;...

  • Page 6: Table Of Contents

    AMT-70/AMT-73/AMT-75 Installation and Operation Chapter 1 INTRODUCTION..................29 The AMT-7X Family........................29 Product Overview ........................30 AMT-70 Description ......................30 1.2.1 AMT-73L Description ......................31 1.2.2 Ordering the Products Options....................32 Chapter 2 INSTALLATION..................37 Introduction..........................37 Unpacking and Inspection......................37 Unpacking ..........................37 2.2.1 Inventory..........................37 2.2.2 Site Considerations ......................
  • Page 7 AMT-70/AMT-73/AMT-75 Installation and Operation The default configuration...................... 49 3.4.1 Programmable Memory Configurations ................50 3.4.2 Clock Options and Buffers – Standard Interface Card ............51 Transmit Timing........................53 3.5.1 3.5.1.1 Internal Clock (SCT)..................... 53 3.5.1.2 External (Terrestrial) Clock (SCTE) ................53 3.5.1.3...
  • Page 8 AMT-70/AMT-73/AMT-75 Installation and Operation Starting the Modem .........................82 Login to the modem ........................83 Setting the Security .........................84 Setting the modem date and time ..................84 Using the Modem Shell ......................85 Command Format ........................ 85 5.8.1 5.8.1.1 Command Help ......................85 Commands Recall and Editing..................... 85 5.8.2...
  • Page 9 AMT-70/AMT-73/AMT-75 Installation and Operation 8.10 RS-485 Connector Pin-Outs ....................112 8.11 EIA/TIA-449 AMT-73L Connector Pin-Outs .................112 8.12 RJ-45 RS232 Pin-Out (AMT-73L) ..................113 8.13 SSPB/Modem Cabling Requirements ..................113 8.14 Alarms Connector Description.....................114 8.15 L-Band Transmit Cable ......................114 8.16 L-Band Receive Cable ......................114 8.17 DB15 –...

  • Page 10: List Of Figures

    AMT-70/AMT-73/AMT-75 Installation and Operation LIST OF FIGURES 1: T AMT-7 ......................30 IGURE AMILY 2: AMT-70 F ............33 IGURE AMILY RODUCTS ONFIGURATION PTIONS 3: R .....................39 IGURE OUNT UPPORT KIT 4: BUC C ....................41 IGURE ONTROL OMMANDS 5: FEC / MODE / RATE C ...............46...
  • Page 11 AMT-70/AMT-73/AMT-75 Installation and Operation 50: RS-232 C ..................111 IGURE ONNECTOR 51: RS-232 N ..............111 IGURE ODEM ONNECTOR 52: RS-485 C ..................112 IGURE ONNECTORS 53: EIA/TIA-449 C ..................112 IGURE ONNECTOR 54: C AMT-70 AMT C & K ......113 IGURE ABLE PIN...
  • Page 12 AMT-70/AMT-73/AMT-75 Installation and Operation TABLE OF DEFINITIONS 16QAM ....................16 Quadrature Amplitude Modulation 8PSK .........................8 Phase-shift Keying ASI......................Asynchronous Serial Interface BPSK........................ Binary Phase-shift Keying BDC........................Block Down-Converter BER ............................Bit Error Rate BUC..........................Block Up-Converter C-Band ................ITU-defined frequency band (5.250-5.925GHz) CRC......................... Cyclic Redundancy Check DCE......................Data Communications Equipment...

  • Page 13: Safety Notice

    AMT-70/AMT-73/AMT-75 Installation and Operation SAFETY NOTICE FCC Warning This equipment generates, uses and can radiate radio frequency energy, and, if not installed in accordance with the instructions contained herein, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to...
  • Page 14 AMT-70/AMT-73/AMT-75 Installation and Operation WARRANTY AND SERVICE AdvantechAMT warrants to the Purchaser that the Products and any Repaired Products (Repairs) will be free from defects in material and workmanship for a period of two years from the date of shipment to the Purchaser.
  • Page 15 AMT-70/AMT-73/AMT-75 Installation and Operation EXTENDED WARRANTY OPTIONS Please contact Customer Service or your reseller for information on optional extended warranties SERVICE Support functions provided by AdvantechAMT's Customer Service include complete factory repair for both in-warranty and out-of-warranty equipment. In the U.S.A., call AdvantechAMT at 1-(480)-784-4646 for Customer Support. In Canada, you can call at 1-(514)-420-0045 and in Europe, contact at 44-(1480)-357-600.
  • Page 16 AMT-70/AMT-73/AMT-75 Installation and Operation TECHNICAL SPECIFICATIONS (AMT-70) DESCRIPTION SPECIFICATION MODULATOR Data Rate 16 Kbps to 140 Mbps Data Rate Options 16kbps to 10Mbps, 20Mbps, 52Mbps and 140Mbps Symbol Rate 32 KSymbol to 40 MSymbol Data Interfaces RS 530 / V35 (standard)
  • Page 17 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION Rate 1/2, 2/3, 3/4, 5/6 and 7/8 convolutional encoding K=7. Configurable Forward Error Correction Optional: Reed Solomon outer (based on DVB-S/ DVB-DSNG standards) with convolutional inner coding or Enhanced Turbo code rate range: between 0.448 and 0.914 (see 9.1 for details).
  • Page 18 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION RF Input (See A.2.7 for Input Power versus 2 x F-type, (F) for 950MHz to 2150MHz Symbol Rate) Impedance: 75 Ω Return Loss: ≥9 dB Input Level: 10Log (Symbol Rate) -100 dBm, +12 dB...
  • Page 19 AMT-70/AMT-73/AMT-75 Installation and Operation TECHNICAL SPECIFICATIONS (AMT-73L) DESCRIPTION SPECIFICATION MODULATOR Data Rate (mandatory) BPSK 64 Kbps to 8472 kbps QPSK/OQPSK 64 kbps to 20,000 kbps 8PSK/TCM 1,544 kbps to 51,840 kbps 8PSK/16QAM Up to 52 Mbps using eTPC and HSSI interface...
  • Page 20 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION Modulation Phase Error < 2 Configurable Forward Error Correction Rate 1/2, 2/3, 3/4, 5/6 and 7/8 convolutional encoding K=7. Optional: Reed Solomon outer (based on DVB-S/DVB-DSNG standards) with convolutional inner coding or Enhanced Turbo code rate range: between 0.448 and 0.914 (see Chapter 9).
  • Page 21 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION RF Input Power (See BER shall not change with the following: for Input Power versus Symbol Rate) Desired Carrier: -45 dBm - 10log (40000/R) dBm (where R = Symbol Rate in kSymbols) AGC Range: +20 dB Max.
  • Page 22 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION Demodulator Type & FEC Rate BPSK: Intelsat 1/2,3/4,7/8 DVB 1/2, 2/3, 3/4, 5/6, 7/8 with RS (204,188) Outer Code, Optional eTPC Rate 2/5, 3/5, 3/4, 4/5, 7/8, 8/9, 19/20 (refer to Chapter 9), Optional...
  • Page 23 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION 5 MHz Reference (IAW MIL-STD-188-115), Input Reference Frequency: 5 MHz Connector: BNC female, labeled J14 External Ref Level: 0 dBm ± 2 dB Max External Reference Phase Noise (to meet Tx/Rx Phase Noise): -115 dBc/Hz at 10 Hz...
  • Page 24 AMT-70/AMT-73/AMT-75 Installation and Operation TECHNICAL SPECIFICATIONS (AMT-75) The specifications listed for the Modulator are just for the DVB-S2 option. The modulator can also support all of the AMT70 options listed in the AMT70 technical specification. DESCRIPTION SPECIFICATION MODULATOR Data Rate...
  • Page 25 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION Intelsat 308/309 Configurable Forward Error Correction DVB-S/DVB-DSNG Coding ETPC (as AMT70) DVB-S2 SHORT and NORMAL FEC Block SHORT Block 16kbit ¼ NORMAL Block 64kbit ¼ * Only available in QPSK according to DVB-S2 Specification...
  • Page 26 AMT-70/AMT-73/AMT-75 Installation and Operation DESCRIPTION SPECIFICATION IF Input (Option) 2 x BNC, (F) for 70 MHz / 140 MHz Impedance: 50 Ω Return Loss: ≥10 dB RF Input (See A.2.7 for Input Power versus 2 x F-type, (F) for 950MHz to 2150MHz Symbol Rate) Impedance: 75 Ω...
  • Page 27 Intelsat Earth Station Standards (IESS) Documents (IESS 308/309/310/315): “Performance Characteristics for Intermediate Data Rate Digital Carriers using Convolutional Encoder / Viterbi Decoding and QPSK, 8PSK modulations.” In addition, the AMT-73 shall be compliant to the following documents: Military Specifications MIL-P-116...
  • Page 28 AMT-70/AMT-73/AMT-75 Installation and Operation Non-Government Documents National Electric Code; by the National Fire Protection Code (NFPA) FED-STD-595 Federal Colors Standard 595 EIA/TIA-449 General Purpose 37-Pin and 9-Pin Interface for Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange...

  • Page 29: Chapter 1 Introduction

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 1 INTRODUCTION The AMT-70 modem supports all the major satellite standards, both Intelsat and DVB, in a one rack unit chassis, if the appropriate options are enabled. The modem can also be ordered with a Turbo Product Code and DVB-S2 FEC options.

  • Page 30: Product Overview

    Through the use of interface cables, the data port can be converted to a synchronous RS-530/422 interface (37-pin D-sub connector) or a V.35 interface (34-pin Winchester connector). Please refer to Advantech’s ‘Communication Processor’ Manual for operational instructions of the router feature.

  • Page 31: Amt-73L Description

    HSSI (High Speed Serial Interface) is also available: the base AMT-73L supports HSSI operation up to 52 Mbps (higher speeds are available with other option cards). The AMT-73 series are powered from a universal power supply with a range from 96 to 263 VAC, 47-63 Hz.

  • Page 32: Ordering The Products Options

    AMT-70/AMT-73/AMT-75 Installation and Operation 1.3 Ordering the Products Options Specific configuration options must be specified at ordering in order to customize your modem specifically for your configuration. The chart on the next page depicts the options available for the AMT-70 modem family.

  • Page 33: Figure 2: Amt-70 Family : P

    AMT-70/AMT-73/AMT-75 Installation and Operation 1A R S p ecial R eq u irem en ts AM T -7 0 S E R IE S Lam inate with A D V Logo C O N F IG U R AT O R O P T IO N "R "...
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  • Page 37: Chapter 2 Installation

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 2 INSTALLATION 2.1 Introduction This section describes the unpacking, inspection, and installation considerations. 2.2 Unpacking and Inspection Check for damage to the outside and the inside of the shipping container. If there is any damage, contact Customer Service and the shipping carrier to report it.

  • Page 38: Power Requirements

    AMT-70/AMT-73/AMT-75 Installation and Operation Do not place the units beside each other or on top of each other. The exhaust from one unit can be drawn into the air intake of another. Make sure the room is properly cooled. Normal cooling may not be sufficient for locations where the electrical equipment is installed.

  • Page 39: Data Connections (Amt-70 Series)

    AMT-70/AMT-73/AMT-75 Installation and Operation Figure 3: Rack Mount Support kit Rear support kits are available to secure the AMT-70 unit firmly on to the supporting structure: Kit (19A-230001-001) for racks with a depth of 600 mm Kit (19A-230011-001) for racks with a depth of 800 mm...

  • Page 40: Data Port Rs-530

    AMT-70/AMT-73/AMT-75 Installation and Operation Data Port RS-530 2.5.1 Receive and transmit data connections are accomplished through the 25-pin D-sub (F) connector labeled TX/RX DATA, RS-530 on the rear panel. In addition to connector pin-outs, Figure 46 provides cable pin-outs that convert the RS-530 interface to an RS-530/449 interface.

  • Page 41: Rf/If Interfaces

    AMT-70/AMT-73/AMT-75 Installation and Operation External Clock Reference (MIL-STD-188-115) 2.6.2 The rear panel includes a BNC connector (J14) for connection to an External 5 MHz Clock. When activated, all frequencies generated within the modem exhibit the same accuracy and stability as this reference.

  • Page 42: Demodulator L-Band Input (Amt-73L)

    AMT-70/AMT-73/AMT-75 Installation and Operation CAUTION: With LNB power enabled, there is a potentially damaging DC voltage applied to the demodulator input. When connecting test equipment, or a local modulator (or any DC coupled devices), always use appropriate DC blocks, and disable LNB powering.

  • Page 43: Chapter 3 Operational Features

    Front Panel M&C – The modem comes standard with an active front panel that includes a 40 character by 2-line Vacuum Fluorescent Display (VFD) and a 16-button membrane keyboard. It also includes LCD status indicators (7 for the AMT-70, 5 for the AMT-73) for a visual snapshot of modem status.

  • Page 44: Acquisition, Fec, Modulation, And Eb/No

    AMT-70/AMT-73/AMT-75 Installation and Operation mode from the RS-485 port. Alternatively, a Packet Protocol mode can be selected. This is recommended for use by programmers in the development of a Network Management System (NMS) or perhaps when the modem is to be used in a bandwidth-on-demand system. The Packet Protocol speeds up the set-up time of a modem or a series of modems.

  • Page 45: Choice Of Fec

    AMT-70/AMT-73/AMT-75 Installation and Operation Therefore, to increase the 64kSymbol acquisition range to +/-30 kHz the rsweep command could be set to 30,000 Hz and the rssize command set to 14kHz. NOTE: It is recommended NOT to use the Spectral Analysis (FFT assisted acquisition) above 3MSymbols.

  • Page 46: Link Budget Analysis And Eb/No (Viterbi And Viterbi R/S)

    AMT-70/AMT-73/AMT-75 Installation and Operation Mode Modulation Rates Intelsat 308/309 BPSK, QPSK Rates: OQPSKI / OQPSKQ ½, ¾ and 7/8 are valid along with the option of Reed-Solomon OFF/ 219 or 126 Intelsat 310 8PSK Rates: 2/3 and again with the option of...

  • Page 47: Modem Applications And Typical Operating Scenarios

    An overview of some of the common applications and modes are outlined in this section of the manual. The AMT-73 is primarily designed to operate in the SCPC mode, although it can be optioned to operate as a DVB Modulator or Data Broadcast Modulator as well.

  • Page 48: Data Broadcast Modulator

    AMT-70/AMT-73/AMT-75 Installation and Operation unit supporting DVB-S, DVB-DSNG and DVB-S2 SHORT and NORMAL blocks. In this configuration, the ASI input is used to receive MPEG-2 data for onward transmission. It is possible to include a Demodulator in the same 1RU unit. This can be used to monitor the Modulator output and it outputs an ASI stream.

  • Page 49: The Default Configuration

    BER Test Pattern 2_23 LNB Tone Status RS Interleaver depth4 LNB 10 MHz Ref CW Carrier Raw Data via MPEG Tx Reset RS Interleaver depth4 Rx Offset Rx Clock Option D/C Mute Mode 3 Rx Reset Available only on AMT-73 modem...

  • Page 50: Programmable Memory Configurations

    AMT-70/AMT-73/AMT-75 Installation and Operation NOTE: When the default command is executed the last modem parameters entered are also reset. DEFAULT should not be executed while the modem is online, since it may disrupt other traffic users operating from the same satellite. It is primarily to be used for bench testing, ONLY.

  • Page 51: Clock Options And Buffers - Standard Interface Card

    AMT-70/AMT-73/AMT-75 Installation and Operation 3.5 Clock Options and Buffers – Standard Interface Card The AMT-70 and AMT-73L includes many clocking options that can be selected to satisfy a multitude of satellite conditions. The standard AMT-70 modulator includes three different options, and the standard AMT-73L includes five different options.
  • Page 52 AMT-70/AMT-73/AMT-75 Installation and Operation should be greater than if it is being used as a Doppler Buffer to reduce the periodic clock slip occurrences. NOTE: The length of the buffer is related to latency and data rate. It may not be appropriate, for example, to choose a buffer length of 64 kbits if the data rate is 64 kbps, unless a latency of 1 second is acceptable.

  • Page 53: Transmit Timing

    AMT-70/AMT-73/AMT-75 Installation and Operation Transmit Timing 3.5.1 Data can be clocked into and out of the transmit de-jitter buffer via the four clocking modes described below: 3.5.1.1 Internal Clock (SCT) The modem supplies the clock to the DTE device, which uses that clock to transmit the data out of its buffer.

  • Page 54: Doppler Buffer Enabled - External Tt Clocking (Scte)

    AMT-70/AMT-73/AMT-75 Installation and Operation The internally generated transmit clock (ST) is used to clock the data out of the Doppler Buffer. A complex scheme allows the Doppler buffer to start from the center, then as the Demod Clock varies due to the diurnal of the satellite movement, it will vary + and - around center to maintain the bit integrity of the output data (RD) without any Doppler shift.This mode is entered by selecting...

  • Page 55: Data System Near End/Far End Loop-Back

    AMT-70/AMT-73/AMT-75 Installation and Operation Data System Near End/Far End Loop-back 3.6.2 A data system internal loop-back is in between the framer (if so equipped) and the FEC encoder/decoder. Activation of the near end internal loop-back therefore tests the interface card...

  • Page 56: Asi Interfaces

    AMT-70/AMT-73/AMT-75 Installation and Operation demodulator desiring to be tested. This test assumes that the modulator is off line. Place the modulator frequency within an area that is supporting no carriers. An inline pad may be necessary if the TX carrier is too high in level. The desirable level is where the modulated carrier is approximately level with the received carriers off the satellite.

  • Page 57: Chapter 4 Active Front Panel

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 4 ACTIVE FRONT PANEL It is recommended that Chapter 3 be reviewed to understand the operational features of this modem prior to setting up the modem. 4.1 Quick Start Guide Modems equipped with the active front panel (LCD display and keypad) provide an easy way to quickly setup a modem and place it online without any connection to a PC or generic control system.

  • Page 58: Figure 9: Parameter Changes In

    AMT-70/AMT-73/AMT-75 Installation and Operation If these loop-back components are not readily available, you could use the internal IF loop-back mode of the modem. To activate the internal IF loop-back mode, perform the following: From the MAIN MENU, arrow to TEST, hit ENT.

  • Page 59: Placing Modem Online

    AMT-70/AMT-73/AMT-75 Installation and Operation This example will change the 5 Mbps data rate to 2.048 Mbps, the FEC to eTPC (Turbo) with a 8/9 code rate. The Tx and Rx frequencies also change from 1 GHz to 950 MHz. NOTE: When completed with the bench testing, remember that the Modulator is in the BER test mode.

  • Page 60: The Front Panel

    AMT-70/AMT-73/AMT-75 Installation and Operation PARAMETER CURRENT DESIRED PARAMETER CURRENT DESIRED VALUE VALUE VALUE VALUE DESCRAM LNB REF OFF or ON OFFSET INTERFACE Menu TX TTINV OFF or ON SPTRM FFT CLOCKING LOCAL Any, depending on INTERFACE Menu RX operation RTEDGEINV...

  • Page 61: Figure 11: The Amt-70 Front

    AMT-70/AMT-73/AMT-75 Installation and Operation Figure 11: The AMT-70 Front Panel Status Description BUC Power: Green Indicates that the BUC power is enabled LNB Power: Green Indicates that the LNB power is enabled Transmit On: Green Indicates that the modulator is transmitting.

  • Page 62: Keypad & Display

    AMT-70/AMT-73/AMT-75 Installation and Operation Figure 13: The AMT-73L Front Panel LEDS Status Description Prime Power: Green Indicates that the power supply current is received by the management card Transmit On: Green Indicates that the modulator is transmitting. Receive Lock Green...

  • Page 63: Welcome Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation Button Function Used to enter digit number ranging 0 to 9. [0-9] Figure 14: Keypad Buttons and their Usage . Welcome Menu 4.2.3 The modem powers up showing a welcome screen displaying the product name of the modem and the company name etc.
  • Page 64 AMT-70/AMT-73/AMT-75 Installation and Operation The lines and arrows to the left (or right) of these figures indicate how to leaf through the menus merely by using the UP, DOWN, LEFT, and RIGHT keys to position the blinking cursor over the first character of the parameter, and then pressing ENT.

  • Page 65: Tx Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation 4.2.5.1 TX Menu The TX menu displays a submenu specifying the available Top-Level configurations for the Modulator. E S S D V B T P C 4 T P C 1 O M 7 The mode selections are as follow;...

  • Page 66: Available Settings And Parameters

    AMT-70/AMT-73/AMT-75 Installation and Operation 4.2.5.1.2 Available settings and parameters The general menu below shows all the options relative to all modes. Depending on the selected mode some parameters may not be valid and hence will not be displayed as options.

  • Page 67: Rx Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation T X : S G N = N P U T = E X T E R N A L O F F M P E G _ N T E R N A L _...

  • Page 68: Figure 16: Front Panel Display

    AMT-70/AMT-73/AMT-75 Installation and Operation Figure 16: Front Panel Display RX (transmit) Menu RX Menu 1 R X : D E M O D = Q P S K C A R R . F R Q = 1 B P S K (Carrier Freq.

  • Page 69: Interface Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation RX Menu 4 R M . N V = A U T O R A W . D A T A = O N N V E R O F F N O R M A L...

  • Page 70: Figure 17: Front Panel Display

    AMT-70/AMT-73/AMT-75 Installation and Operation NOTE: TRANSMITTING ALL ZEROS will cause a pure carrier to be transmitted if scrambling is not enabled in Intelsat Modes. Figure 17 Front Panel Display INTERFACE Menu. INTERFACE Sub Menu CARD Menu O D E R S 5...

  • Page 71: Monitor Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation N E . A L = N E . F A R O F F S T E M . O C A L = O F F E M . O F F RX Menu 2 R E V S W .
  • Page 72 AMT-70/AMT-73/AMT-75 Installation and Operation C O D E . A T E (Current Active FEC rate) D A T A R A B P S (Rate is per Tx data rate in BPS mode, Transmission Rate in SPS) C A R R I...
  • Page 73 AMT-70/AMT-73/AMT-75 Installation and Operation RX Menu 1 D E C O D I N T E L S A T (Displays the current Active coding type) M O D U L A T I Q P S K (Displays the current Active Modulation) RX Menu 2 C O D E .
  • Page 74 AMT-70/AMT-73/AMT-75 Installation and Operation RX Menu 7 P O W E d B m (+10 dB from -80 dBm to -20 dBm – AMT-70; to +10 dBm with AMT-73L) L O C (Status of symbol timing recovery) RX Menu 8 R S .

  • Page 75: Function Menu

    AMT-70/AMT-73/AMT-75 Installation and Operation B T O N O F F (Turns 10MHz tone on and off to LNB) L N B V P O F F (Switches LNB power between 13V and 18v) 4.2.5.5 FUNCTION Menu The FUNCTION menu (Figure 19) branches into five submenus labeled INFO, CONFIG, CONTROL, TESTS and REBOOT.

  • Page 76: The Control Submenu

    AMT-70/AMT-73/AMT-75 Installation and Operation E F A U L T C F G S T O R E . C O N The default parameters are read/only and cannot be changed. There are up to 10 memory locations that can be programmed, with each being able to store and retrieve a complete set of parameters to include TX and RX carrier frequency, data rate, FEC type, FEC code rate, type of scrambler, and etc.

  • Page 77: The Control/Ports/Rs485 Option

    AMT-70/AMT-73/AMT-75 Installation and Operation P R I G A T E W A Y = 1 NETWORK Menu 3 S C N D A D D R = M A S K = NETWORK Menu 4 S C N D G A T E W A Y = 1 4.2.5.5.5...

  • Page 78: The Control/Buc Submenu

    AMT-70/AMT-73/AMT-75 Installation and Operation 4.2.5.5.6 The CONTROL/BUC submenu The CONTROL/BUC submenu is used to sets up the BUC when this support is fitted on the modem. P O W E R = O F F R E F E R E N C E = O F F The BUC power can be turned ON/OFF from the front panel.

  • Page 79: The Tests Submenu

    AMT-70/AMT-73/AMT-75 Installation and Operation 4.2.5.5.9 The TESTS submenu The TEST menu branches into three submenus labeled MODE, LEDTEST and RESET. M O D E T E S T R E S The MODE option The MODE sub menu provides a means for generating a pure carrier from the modulator, and for placing the modulator and demodulator into an IF loop-back.

  • Page 80: Executing Variable Commands From The Front Panel

    AMT-70/AMT-73/AMT-75 Installation and Operation Executing Variable Commands from the Front Panel 4.2.6 In some cases, when a parameter is changed (such as TX PWR, etc.) followed by ENTER, the parameter is executed immediately. These are independent parameters, since changing their values do not affect any other parameter in the menu.

  • Page 81: Chapter 5 Managing The Modem

    5.2 Using RS-485 Rear Panel Remote M&C A dual function RS-485 (P8 for the AMT-70 and J13 for the AMT-73) port is also present at the rear panel. This port is set to 4-wire operation. For monitor and control over this port the mcadd command must be used in order to define the tributary address of the modem.

  • Page 82: Using The Ethernet Port

    AMT-70/AMT-73/AMT-75 Installation and Operation 5.3 Using the Ethernet Port The back panel Ethernet modem management port (P6 for the AMT-70 and J9 for the AMT-73L) is used to interface the modem with the network. This port is dedicated to receive and process the management requests.

  • Page 83: Login To The Modem

    AMT-70/AMT-73/AMT-75 Installation and Operation COLDFIRE port done by Greg Ungerer, gerg@snapgear.com Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne On node 0 total pages: 4096 ………………. M41T94 Real Time Clock Driver loaded Resetting modulator/demodulator (LOW) Command: powercyc 1 Initializing modulator/demodulator (HIGH) ……………..

  • Page 84: Setting The Security

    AMT-70/AMT-73/AMT-75 Installation and Operation 5.6 Setting the Security We strongly recommend that the manufacturing installation password is changed during the first setup. The command “passwd” is used for this function as shown below; # passwd Changing password for root Enter the new password (minimum of 5, maximum of 8 characters) (yourpassword) Please use a combination of upper and lower case letters and numbers.

  • Page 85: Using The Modem Shell

    AMT-70/AMT-73/AMT-75 Installation and Operation 5.8 Using the Modem Shell Command Format 5.8.1 The syntax of the commands for the M&C interface is entered in line mode as follows: ↵ # [command] [ parameters] ↵ All [commands] and [parameters] must be entered in lower-case. When [enter...

  • Page 86: Commands Completion Mode

    AMT-70/AMT-73/AMT-75 Installation and Operation 5.8.2.1 Commands Completion Mode All the commands must be entered using the command prefix, a "t" for the modulator and an "r" for the demodulator. While typing a command you can use the (tab→) key to toggle the command completion mode;...

  • Page 87: Configuring The Rs-485 Port

    AMT-70/AMT-73/AMT-75 Installation and Operation Scheduling Periodic Commands 5.8.3 The user interface allows for the scheduling of commands at specific short interval of time. The command every is used for this function: ↵ # every [period] [explicit command] The [period] is the time interval used to define the periodic interval used to schedule the command.

  • Page 88: Accessing The Modem Through A Network

    AMT-70/AMT-73/AMT-75 Installation and Operation Command Description Sets the number of data bits; the values are 7 or 8 mcdatabit [data bits] Sets the number of stop bits; the values are 1 or 2. mcstopbits [stop bits] These values can be set using the command line interface mode or the front-panel FUNC / RS-485 option.

  • Page 89: Configuring The Routing Tables

    AMT-70/AMT-73/AMT-75 Installation and Operation Configuring the routing tables 5.10.2 The default routing entry is also configured using the tsetcfg / rsetcfg commands: ↵ # tsetcfg gateway fff.ggg.hhh.iiii (for port P6) ↵ # rsetcfg gateway fff.ggg.hhh.iiii (for port P1) Figure 32: Configuring the static routing tables In summary, these addresses are typically used to define the routing address between a private local area network and Internet.

  • Page 90: Using Ftp For Software Download

    AMT-70/AMT-73/AMT-75 Installation and Operation After a session is established with the modem, theTelnet interface is identical to the serial port interface and support the same command set. The way to close a Telnet session is by using the “bye” command.

  • Page 91: Downloading From The Rs-232 Serial Port

    AMT-70/AMT-73/AMT-75 Installation and Operation Downloading from the RS-232 Serial Port 5.11.1 If Ethernet is not available (typically if the modem is in the field) the RS-232 serial port can be used for software download using the Zmodem protocol. The Zmodem protocol sends data in 512 byte blocks and uses cyclic redundancy checking to transmit and check the data.

  • Page 92: Using Snmp

    AMT-70/AMT-73/AMT-75 Installation and Operation 5.12 Using SNMP Introduction 5.12.1 The AMT70 modem family supports an SNMP agent. This support must be configured at manufacturing when the modem is ordered. The command “showcfg” can be used to check if SNMP is supported by your modem.

  • Page 93: The Snmp Mib Source File

    AMT-70/AMT-73/AMT-75 Installation and Operation rwcommunity = private => snmpcfg trapsink trapsink = 0.0.0.0 => snmpcfg trapcommunity trapcommunity = public The SNMP MIB source file 5.12.3 You can get the SNMP agent MIB source file using one of the two methods below;...

  • Page 94: The Snmp Traps

    AMT-70/AMT-73/AMT-75 Installation and Operation Event Message Description SNMP CONSOLE Redundant Unit Fault Switch Unreadable Refer to the section System unknown state “Redundancy” at page 122 for Redundant UNIT ready the description of these events. Active unit fault Both Unit Fault...
  • Page 95 AMT-70/AMT-73/AMT-75 Installation and Operation Alternatively, the log messages can be browsed on the front-panel using the option MONITOR/LOG. If the LOG file needs to be kept the command; ↵ # savelog can be used to save the log on flash.

  • Page 96: The Modem Command Set

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 6 THE MODEM COMMAND SET 6.1 Introduction This chapter describes the AMT-70 remote control, simplified user interface, set-up menu operation, transmit control commands, receive control commands and monitor commands for both transmit and receive. The Command Syntax 6.1.1...
  • Page 97 AMT-70/AMT-73/AMT-75 Installation and Operation Data Rate tdata yyyyyy rdata yyyyyy Get/Set output or input data rate in Hz Modulation Type Get / Set the modulator type tmod rdem BPSK, QPSK, 8PSK, BPSK, QPSK, 8PSK, 16QAM, OQPSKI, 16QAM, OQPSKI OQPSKQ OQPSKQ...

  • Page 98: The Modulator Specific Commands

    AMT-70/AMT-73/AMT-75 Installation and Operation The Modulator Specific Commands 6.1.3 The modulator specific commands are listed below: Figure 3 Monitor Specifics Commands Modulator Specifics Output Interface Control output signal frequency toutput 70, 140 or L BAND PRBS Polynomial Get / Set PRBS Polynomial...

  • Page 99: The Demodulator Specific Commands

    AMT-70/AMT-73/AMT-75 Installation and Operation The Demodulator Specific Commands 6.1.4 The demodulator specific commands are listed below: Figure 40: Demodulator Specific Commands Demodulator Specifics Received data output Configure the receive data output rcinv ON or OFF Frequency sweep search Get / Set frequency sweep search range...

  • Page 100: Getting The Chassis Configuration And Status

    AMT-70/AMT-73/AMT-75 Installation and Operation Demodulator Specifics Status information Get internal demodulator status rstatus information. rstatus details The command rstatus with no parameters return the “hex”” status of the peripheral card. # rstatus rstatus = 0x6004 the command “rstatus details” return the decoded status of the card;...
  • Page 101 AMT-70/AMT-73/AMT-75 Installation and Operation Command Description Display the internal code for the manufacturing options fitted options Display the number of modulators installed inside the chassis. mods (Always 1 for the AMT70 series) Display the number of demodulators installed inside the chassis.

  • Page 102: The Interface Commands

    AMT-70/AMT-73/AMT-75 Installation and Operation Command Description Reboot the modem; The option “m’ reset the management card and “ALL reset all the modem cards. After a software upgrade always used the option ALL. The Interface Commands 6.1.7 6.1.7.1 ASI Interface Commands The ASI interface is fitted on all AMT70 modem on the demodulator card.

  • Page 103: Hssi Interface

    AMT-70/AMT-73/AMT-75 Installation and Operation 6.1.7.3 3*HSSI Interface With this interface installed, the aggregate data rates for all 3 channels are computed automatically. Thus, it is not possible to change data rates using TDATA/RDATA commands. Figure 3*HSSI Commands Summary Interface Commands hssi Used for setting HSSI channel data rates, clock inversion, enable/disable.

  • Page 104: Chapter 7 Using The Rs-485 Port

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 7 USING THE RS-485 PORT It is recommended that Chapter 3 and Chapter 5 be reviewed to understand the operational features of this modem prior to setting up the modem. The RS-485 Control Commands The mccontrol command defines which network management application controls the port. The format of the command MCCONTROL is as follows;...

  • Page 105: The Packet Protocol

    AMT-70/AMT-73/AMT-75 Installation and Operation The AMT-70 modem supports a fast binary protocol through the back-panel RS-485 interface used to control the modem from a client application running on a master workstation. The client station can be based on Windows or Linux. The modem acts as a server application and executes the configuration/monitoring query from this station.

  • Page 106: Chapter 8 Cables And Pin-Outs

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 8 CABLES AND PIN-OUTS 8.1 Rear Panel Connector Arrangements The connector arrangements for the AMT-70L and AMT-73L are provided in the following figures. Figure 44: Back Panel Connectors for AMT-70 Back Panel Description Connector Type...

  • Page 107: Rs-442/449 To Rs-530 Adapter Cable

    AMT-70/AMT-73/AMT-75 Installation and Operation Figure 45: Back Panel Connectors for AMT-73L RS-422/449 RS-422/449 HSSI HSSI RS-485 RS-485 L Band L Band Data Data Data Data Alarms Alarms M&C M&C Output Output Interface Interface Interface Interface Input Input Mod/Demod Mod/Demod RS-232...

  • Page 108: Rs-422/449 To Rs-530 Y-Cable

    AMT-70/AMT-73/AMT-75 Installation and Operation RS-422/RS-449 RS-422/RS-449 Source RS-530 Pin Signal P1-4 SD-A P2-2 P1-22 SD-B P2-14 P1-5 ST-A P2-15 P1-23 ST-B P2-12 P1-7 RS-A P2-4 P1-25 RS-B P2-19 P1-9 CS-A P2-5 P1-27 CS-B P2-13 P1-1 Shield P2-1 P1-19 Signal Ground...

  • Page 109: Data Interface Pin-Outs (Amt-70)

    AMT-70/AMT-73/AMT-75 Installation and Operation RS-422/RS-449 RS-422/RS-449 Source RS-530 Pin Signal P1-6 RD-A P3-3 P1-24 RD-B P3-16 P1-8 RT-A P3-17 P1-26 RT-B P3-9 Notes: P1 is a male DB-37 connector that connects to the BERT. P2 is a male DB-25 connector that connects to the Modulator.

  • Page 110: Hssi Connector Pin-Outs

    AMT-70/AMT-73/AMT-75 Installation and Operation 8.5 HSSI Connector Pin-Outs The HSSI cable pin-outs (P3 on AMT-70 and J18 on the AMT-73L) are as follows; Figure 49: HSSI Data Interface Pin-Outs Pin # Pin # Direction (+ side) (- side) DTE-DCE Signal Name Signal common <-.

  • Page 111: Ethernet Ip Router Connector Pin-Outs (Amt-73L)

    AMT-70/AMT-73/AMT-75 Installation and Operation 8.7 RJ-45 Ethernet IP Router Connector Pin-Outs (AMT-73L) AMT-70 Modems may be optionally supplied with an IP router, FRAD (Frame Relay Access Device) and bridge. With this option, an external router is not required. For units equipped with IP data routing, an RJ-45 connector (JB) on the rear panel provides access to the Ethernet data port.

  • Page 112: Connector Pin-Outs

    AMT-70/AMT-73/AMT-75 Installation and Operation 8.10 RS-485 Connector Pin-Outs The figure below, lists the pin-outs of the 9-pin D connector (P8 for AMT-70; J13 for AMT-73L): Figure 53: RS-485 Connectors Pin-Outs DB-9 Pin AMT70 AMT73L Number Pin 1 Signal Ground RS-485 TX +...

  • Page 113: Rs232 Pin-Out (Amt-73L)

    AMT-70/AMT-73/AMT-75 Installation and Operation SIGNAL NAME COMMENT ( Signal Direction ) PIN NUMBER Signal Freq Select Signal Rate Indicator Select Standby Standby Indicator Ring Indicator Select Transmit Freq Remote LoopBack Test Indicator 8.12 RJ-45 RS232 Pin-Out (AMT-73L) For units equipped with IP data routing, located at Port JA on the rear of the modem is an RJ-45 connector carrying RS-232 electrical signals.

  • Page 114: Alarms Connector Description

    AMT-70/AMT-73/AMT-75 Installation and Operation 8.14 Alarms Connector Description The modem provides 3 Form-C contact (relay) outputs for FAULT indication on the Modulator board which includes a FAULT from the Demodulator board (P5 - AMT-70, J6 - AMT-73L). One alarm relay set is undefined. The provided signals are as follows: Figure 56: Pin-outs for alarm connector Pin No.

  • Page 115: Db15 - Db15 - Switch Cable

    AMT-70/AMT-73/AMT-75 Installation and Operation 8.17 DB15 – DB15 – Switch Cable The following connection information is provided for reference purposes. Figure 57: DB15-DB15-Redundancy Switch Adapter Cable Pin-Outs DB15 (A) DB15 (B) RF SWITCH Note RF SW Drive, unit A RF SW Drive, unit B...

  • Page 116: Chapter 9 Turbo Code Details

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 9 TURBO CODE DETAILS A basic understanding in Turbo Product Coding is followed by the specific AMT-70 Turbo Product Code details. 9.1 Turbo Product Code Overview Scrambler Framer Insert Encoder When data is encoded using Turbo Product Codes, it passes through four stages. First, a cyclic redundancy check-word (CRC) is inserted into the uncoded data.

  • Page 117: Amt7X Family Tpc Overview

    AMT-70/AMT-73/AMT-75 Installation and Operation The second axis is now encoded using the appropriate component code Note Uncoded Data that the ECC bits generated by the first encoding pass are in turn protected. This results in an encoded block of 64 x 64 = 4096 bits.

  • Page 118: Calculating The Code Rate

    AMT-70/AMT-73/AMT-75 Installation and Operation In some cases, where the uncoded block size does not exactly line up on a byte-boundary, a number of padding bits are inserted after the CRC. They are set to zero. Once the CRC is inserted, the uncoded data is then always scrambled. This does not add or remove data from the stream, merely exclusive-ORs it with a pseudo-random binary sequence that can be removed in the decoder.
  • Page 119 AMT-70/AMT-73/AMT-75 Installation and Operation The calculated uncoded size is thus reduced to the nearest multiple of 8. × × − ⎛ ⎞ × ⎟ ⎜ bits ⎝ ⎠ In 2D cases, U is 1. The code rate is then determined as the ratio of the two values:...

  • Page 120: Chapter 10 Buc And Advantech Sspb

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 10 BUC AND ADVANTECH SSPB The purpose of this chapter is to provide the procedures for operating the AMT-70 satellite modem with the AdvantechAMT BUC and the AdvantechAMT SSPB. P 10.1 SSPB (BUC) Interface Connections 1.

  • Page 121: Tx Carrier Enable

    AMT-70/AMT-73/AMT-75 Installation and Operation 10.5 TX Carrier Enable 1. Double-check modulator IF carrier frequency to insure proper TX frequency. 2. Determine desired TX output level from BUC. 3. Determine modulator output level based upon following formula: (TX BUC dBm) – (IF to RF BUC gain dB)- (Cable Loss dB) = Modulator carrier level.

  • Page 122: Chapter 11 Redundancy

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 11 REDUNDANCY The AMT-70 modem can be purchased with additional functionality that facilitates a one-for-one (1:1) redundancy system. The redundancy feature is installed at manufacturing of the modem. This section describes how to set up your hardware and configure the redundancy system to best suit your needs.
  • Page 123 AMT-70/AMT-73/AMT-75 Installation and Operation J5 (OUT) P7 (ASI) Shelf A SWITCH (OUT) SPLITTER (IN) RF OUT RACK-MOUNT BRACKET DATA IN Shelf B Figure 60: Redundancy Connections: ASI interface as Data Input Skip to section 11.2 S oftware Configuration...

  • Page 124: Hssi Interface

    AMT-70/AMT-73/AMT-75 Installation and Operation RS-530 / HSSI interface 11.1.2 The core redundancy hardware kit consists of the following: • 1U rack mounted redunancy shelf (see below for appropriate Part Number) • 2 x 15-Pin D-Sub M-M redundancy signalling cables (P/N 26A-400805-D01) •...
  • Page 125 AMT-70/AMT-73/AMT-75 Installation and Operation __________________________________________________________________________ MODEM 'A' 1:1 REDUNDANCY MODEM 'B' Redundancy BUC / LNB RS-530 / TX/RX HSSI ports interface LAN, etc. Data Figure 61: RS-530 / HSSI redundancy system connection overview Make data and RF cable connections before connecting the AC power supplies. Connections for RS-...
  • Page 126 AMT-70/AMT-73/AMT-75 Installation and Operation __________________________________________________________________________ RS-530 DCE RS-530 DTE A RS-530 DTE B MODEM 'A' TO MODEM RX (To/From user net) (To/From Modem A) (To/From Modem B) REDUNDANCY (IN) MODEM 'B' FROM MODEM TX AC POWER IN 1 AC POWER IN 2...

  • Page 127: Front Panel Push Buttons

    AMT-70/AMT-73/AMT-75 Installation and Operation 11.1.2.1 Front panel push buttons The two buttons ‘Switch to A’ and ‘Switch to B’ are used to ‘force’ the redundancy shelf to switch to either Modem ‘A’ or Modem ‘B’ respectively. Push buttons LED indicators Figure 64: 1-1 Redundancy Controller (R5-530/HSSI only) front panel 11.1.2.2...

  • Page 128: Software Configuration

    AMT-70/AMT-73/AMT-75 Installation and Operation 11.2 Software Configuration In addition to the regular AMT-70 commands found in the main manual, a further five (5) are available with the redundancy ‘enabled’ units. These are detailed below. Figure 65: AMT-70/73 Redundancy Commands Command...
  • Page 129 AMT-70/AMT-73/AMT-75 Installation and Operation Conversely, setting a maximum value of 255 ‘unmasks’ ALL bits in the Fault Mask Register and any bit SET by the software becomes a fault condition. Figure 66: Redundancy Fault Mask Register 0 (LSB) MOD. NOT RUNNING/ DEMOD COMMS MOD.
  • Page 130 AMT-70/AMT-73/AMT-75 Installation and Operation rdstat This command is provided primarily as a debug tool. The user can see the redundancy software signal I/O and the system interpretation of the signal statuses. Example: # rdstat Redundancy System Parameters Switch position: 0x0C...

  • Page 131: Messages

    AMT-70/AMT-73/AMT-75 Installation and Operation 11.3 Messages The following are console messages generated when the redundancy system is enabled. N.B. ‘This unit’ refers to the console you are interfacing with. ‘Other unit’ refers to the other unit in the redundancy system.

  • Page 132: Chapter 12 Appendix A System Considerations

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 12 APPENDIX A SYSTEM CONSIDERATIONS A.1 Typical AMT-70L/AMT-73L Interconnections Following are some useful tips on setting up an earth station using the AMT-70L/AMT-73L modem. OUTDOOR (ODU) Antenna INDOOR Rx 950-2150 MHz Data Port AMT-70 Tx 950-2000 MHz...

  • Page 133: Setting The Transmit Levels

    AMT-70/AMT-73/AMT-75 Installation and Operation A.1.1 Setting the transmit levels The output power level of the modulator is adjustable from 0 to -25 dBm. Input Level (dBm) Length of LM R-600 Cable (ft) 2000 Figure 69: Power Loss in LMR-600 Cable versus Cable Length The TX gain past the modulator output should be set for the desired EIRP level of the Earth Station.

  • Page 134: Lnb, Buc & Antenna Installation

    AMT-70/AMT-73/AMT-75 Installation and Operation Through the use of special slope equalizers and amplifiers, the distance between the modem and the BUC can be extended. It is important to note that a +24/+48 VDC offset and a 10MHz reference signal may be present at the modulator output.

  • Page 135: Antenna Pointing Angles

    AMT-70/AMT-73/AMT-75 Installation and Operation This single orbit has to be used because it is the only one where the G force generated by the speed a satellite needs to travel at to match the earth’s rotation equals the gravitational pull of the earth. Any other orbit and the satellite would either crash to earth or fly out into space.
  • Page 136 AMT-70/AMT-73/AMT-75 Installation and Operation Where: s = satellite distance from center of earth = 42165Km e = radius of the earth = 6370Km a = latitude of antenna (in degrees) b = longitude of satellite (in degrees) c = longitude of antenna (in degrees)

  • Page 137: Pointing The Antenna

    AMT-70/AMT-73/AMT-75 Installation and Operation A.2.6 Pointing the Antenna Use a sighting compass to align the antenna in azimuth and an inclinometer to set the elevation angle. Subtract any antenna offset from the required elevation angle when measuring. The antenna is now pointing approximately at the satellite but needs to be aligned more accurately for use.

  • Page 138: Input Level Range Versus Symbol Rate

    AMT-70/AMT-73/AMT-75 Installation and Operation A.2.7 Input Level Range Versus Symbol Rate The composite input power range for the AMT-70L and the AMT-73L is dependant on the Symbol Rate of the incoming data. (Remember, Symbol Rate is the transmitted data rate, and is dependant on Data Rate, FEC Code Rate, and Modulation scheme.
  • Page 139 AMT-70/AMT-73/AMT-75 Installation and Operation -10.0 -20.0 -30.0 -40.0 Maximum -50.0 -60.0 Nominal -70.0 -80.0 Minimum -90.0 -100.0 1000 10000 100000 Desired Carrier Symbol Rate (ksps)

  • Page 140: Chapter 13 Appendix B S/N To Eb/No Conversion

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 13 APPENDIX B S/N TO EB/NO CONVERSION Eb/No or more properly, Eb/N0, is defined as the ratio of Energy per Bit to Spectral Noise Density in a 1 Hz bandwidth. It is used in digital communications to define the signal strength required at the input of the demodulator to provide a desired Bit Error Ratio (BER).
  • Page 141 AMT-70/AMT-73/AMT-75 Installation and Operation (dB) (dB) Viterbi 1/2 Viterbi 2/3 Viterbi 3/4 Viterbi 7/8 TPC16K-2/5 TPC16K-3/5 TPC4K-3/4 TPC16K-8/9 TPC16K-19/20 (S+N)/N Es/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 -0.6 -0.1 -0.6 -0.8 10.0 10.0 10.5 10.1 10.1 10.6 11.0...
  • Page 142 AMT-70/AMT-73/AMT-75 Installation and Operation (dB) (dB) Viterbi 1/2 Viterbi 2/3 Viterbi 3/4 Viterbi 7/8 TPC16K-2/5 TPC16K-3/5 TPC4K-3/4 TPC16K-8/9 TPC16K-19/20 (S+N)/N Es/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 -1.2 -1.7 -2.4 -0.7 -1.8 -2.3 -2.6 -0.4 -0.9 -1.6 -1.0...
  • Page 143 AMT-70/AMT-73/AMT-75 Installation and Operation (dB) (dB) Viterbi 1/2 Viterbi 2/3 Viterbi 3/4 Viterbi 7/8 TPC16K-2/5 TPC16K-3/5 TPC4K-3/4 TPC16K-8/9 TPC16K-19/20 (S+N)/N Es/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 Eb/N0 -1.2 -2.5 -3.0 -3.6 -0.7 -1.9 -3.1 -3.6 -3.8 -0.4 -1.7...

  • Page 144: Chapter 14 Appendix C Embedded Router

    APPENDIX C EMBEDDED ROUTER AMT70/73 modems can be optionally equipped with the Advantech Embedded Router module (AERo) that provides the AMT70/73 modems with the full functionality of an IP router, FRAD (Frame Relay Access Device) and bridge. With this option the AMT70/73 modems, without the need for any additional data telecommunication equipment, can support a wide range of network solutions.
  • Page 145 AMT-70/AMT-73/AMT-75 Installation and Operation AERo supports standard Advantech set of the interfaces: hysical interfaces: • WAN: b idirectional and receive only up to 20Mbit/s; • LAN: 10/100Base-T a L nk: • WAN - HDLC (Cisco compatible), PPP, F rame Relay;...
  • Page 146 AMT-70/AMT-73/AMT-75 Installation and Operation Services: • DHCP client; • DNS client; • FTP/TFTP client; • NAT; • CDP; • IP spoofing; • AAA (Authentication, authorization and accounting): • Local AAA (Access rights table); • PAP, CHAP, MS-CHAP (Client/ Server); •...

  • Page 147: Chapter 15 Appendix D Turbo Product Code Performance

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 15 APPENDIX D TURBO PRODUCT CODE PERFORMANCE Typical Turbo code results for a variety of data rates are listed below: Note that in all graphs TPC 3/5 4k should read TPC4K 4/5 All Graphs are SNR .v. BER...
  • Page 148 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 76: QPSK at 256kbps at –104dBm/Hz Input Power...
  • Page 149 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 77: QPSK 3MBps at –104dBm/Hz Input Power...
  • Page 150 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 78: QPSK at 10Mbps at –104dBm/Hz Input Power...
  • Page 151 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 79: QPSK at 35Mbps at –104dBm/Hz Input Power...
  • Page 152 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 80: 8PSK at 150kbps at –104dBm/Hz Input Power...
  • Page 153 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 81: 8PSK at 400kbps at –104dBm/Hz Input Power...
  • Page 154 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 82: 8PSK at 16Mbps at –104dBm/Hz Input Power...
  • Page 155 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 83: 8PSK at 55Mbps at –104dBm/Hz Input Power...
  • Page 156 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 84: 16QAM at 512kbps at –104dBm/Hz Input Power...
  • Page 157 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 85: 16QAM at 6Mbps at –104dBm/Hz Input Power...
  • Page 158 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 86: 16QAM at 20Mbps at –104dBm/Hz Input Power...
  • Page 159 AMT-70/AMT-73/AMT-75 Installation and Operation Figure 87: 16QAM at 70Mbps at –104dBm/Hz Input Power...

  • Page 160: Chapter 16 Appendix E Dvb-S2 Theoretical Performance

    AMT-70/AMT-73/AMT-75 Installation and Operation CHAPTER 16 APPENDIX E DVB-S2 THEORETICAL PERFORMANCE The DVB-S2 S/N specification for DVB-S2 NORMAL Block size is listed in Figure 88. This data is taken directly from the DVB-S2 specification. Mode Spectral efficiency Ideal Es/No (dB) QPSK ¼...

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