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Comtech EF Data MBT-4000 Installation And Operation Manual

Multi-band transceiver system
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MBT-4000
Multi-Band Transceiver System
Installation and Operation Manual
IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN/MBT4000.IOM Revision 4

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  • Page 1 MBT-4000 Multi-Band Transceiver System Installation and Operation Manual IMPORTANT NOTE: The information contained in this document supersedes all previously published information regarding this product. Product specifications are subject to change without prior notice. Part Number MN/MBT4000.IOM Revision 4...
  • Page 3 Multi-Band Transceiver System Installation and Operation Manual Part Number MN/MBT4000.IOM Revision 4 July 2, 2009 Copyright © 2009 Comtech EF Data. 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 4 This page is intentionally blank.
  • Page 5 Errata A for MN/MBT4000.IOM Rev 4 Comtech EF Data Documentation Update Subject: Chapter 4, p. 4-2, Update Table 4-2, C-band frequency Errata Part Number: ER-MNMBT4000.EA4 (Errata documents are not subject to revision.) PLM CO Number: C-0024197 Comments: See attached page(s). The new information will be included in the next released revision of the manual.
  • Page 6 Figure 4-1 illustrates the location of the LED Indicators. Located on the top of the MBT-4000’s Base Module under a pivoting protective plate, the LEDs may be viewed by loosening the thumbscrew that keeps the plate in place;...

  • Page 7: Table Of Contents

    Table of Contents TABLE OF CONTENTS ......................III  TABLES ............................VI  FIGURES ............................ VI  PREFACE ..........................VII  About this Manual ............................ vii  New in this Release ..........................vii  Reporting Comments or Suggestions Concerning this Manual .............. vii  Conventions and References ........................viii  Cautions and Warnings ..........................

  • Page 8: Table Of Contents

    Operation ............................. 2–2  CHAPTER 3.  EXTERNAL CONNECTORS ................3–1  3.1  External Connectors Overview ....................3–1  3.2  MBT-4000 External Connectors ....................3–2  3.2.1  IF Signal Side Connectors ..................... 3–3  3.2.1.1  POWER (J1) ........................3–3  3.2.1.2  COMM (J2) ........................3–3  3.2.1.3  UNIT 1 COMM (J3) ......................3–4 ...
  • Page 9 MBT-4000 Multi-Band Transceiver System Revision 4 Table of Contents MN/MBT4000.IOM 4.4  Block Down Converter Module (BDC-4000) Operating Parameters ........4–2  4.5  Monitoring Operations via the LED Indicators ............... 4–2  CHAPTER 5.  FLASH UPGRADING ..................5–1  5.1  Overview ............................5–1  5.2 ...
  • Page 10 Table B-5. MBT-4000 Informational Events ................... B–4 Table B-6. BDC-4000/BUC-4000 Informational Events ................. B–4 Figures Figure 1-1. Comtech EF Data MBT-4000 Multi-Band RF Transceiver ............. 1–1 Figure 1-2. MBT-4000 Operational Schematic ..................1–2 Figure 1-3. Operational Diagram for Dual-Base (Chain) Redundancy Option ........1–3 Figure 1-4.

  • Page 11: Preface

    MBT-4000. Comtech EF Data has reviewed this manual thoroughly in order to provide an easy-to-use guide to your equipment. All statements, technical information, and recommendations in this manual and in...

  • Page 12: Conventions And References

    MBT-4000 Multi-Band Transceiver System Revision 4 Preface MN/MBT4000.IOM Conventions and References Cautions and Warnings IMPORTANT or NOTE indicates information critical for proper equipment function. IMPORTANT CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage.

  • Page 13: Electromagnetic Compatibility (Emc) Compliance

    MBT-4000 Multi-Band Transceiver System Revision 4 Preface MN/MBT4000.IOM Electromagnetic Compatibility (EMC) Compliance This is a Class A product. In a domestic environment, it may cause radio interference that requires the user to take adequate protection measures. EN 55022 –1998 Compliance This equipment meets the radio disturbance characteristic specifications for information technology equipment as defined per EN 55022 1998.

  • Page 14: Safety Compliance

    MBT-4000 Multi-Band Transceiver System Revision 4 Preface MN/MBT4000.IOM Safety Compliance EN 60950 – 1997 Compliance Applicable testing is routinely performed as a condition of manufacturing on all units to ensure compliance with safety requirements of the European Union Low Voltage Directive (EN 60950).

  • Page 15: Warranty Policy

    Comtech EF Data is responsible for the freight charges only for return of the equipment from the factory to the owner. Comtech EF Data will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data.

  • Page 16: Exclusive Remedies

    The buyer shall pass on to any purchaser, lessee, or other user of Comtech EF Data Corporation’s products, the aforementioned warranty, and shall indemnify and hold harmless Comtech EF Data Corporation from...

  • Page 17: Customer Support

    Tempe, Arizona 85281 USA 480.333.2200 (Main Comtech EF Data number) 480.333.4357 (Customer Support Desk) 480.333.2161 FAX To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement: • the Comtech EF Data Customer Support Department. Be prepared to supply the...

  • Page 18: Mbt-4000 Multi-Band Transceiver System Revision

    MBT-4000 Multi-Band Transceiver System Revision 4 Preface MN/MBT4000.IOM Notes:...

  • Page 19: Chapter 1. Introduction

    Chapter 1. INTRODUCTION Overview Comtech EF Data’s MBT-4000 Multi-Band RF Transceiver, shown in Figure 1-1, is designed to perform C-, X-, or Ku-Band RF to L-Band down conversion and L-Band to C-, X-, or Ku- or Ka- Band RF up conversion.

  • Page 20: Common Features

    System status verification via LEDs located behind a removable cover • Flexible configuration: 2 Ups 2 Downs 1Up / 1 Down Figure 1-2 depicts the operation schematic for a typical MBT-4000 application. LBC-4000 BUC-4000C 70 MHz L-Band From RF Out...

  • Page 21: System Overview

    Figure 1-3. Operational Diagram for Dual-Base (Chain) Redundancy Option System Overview The MBT-4000 Multi-Band Tranceiver System is constructed in a modular configuration. Figure 1-4 illustrates the key components of this configuration. Common to the configuration for any frequency band of operation is a base module, which provides the Monitor and Control (M&C), Power Supply, and Reference function.

  • Page 22: Summary Of Specifications

    MBT-4000 Multi-Band Transceiver System Revision 4 Introduction MN/MBT4000.IOM Summary of Specifications 1.6.1 Environmental & Physical Dimensions (excluding connectors) See Figure 1-4 ODU: BUC-4000 – -40º 122ºF (-40º to 50ºC) Operating – Temperature IDU: LBC-4000 14º 122ºF (-10º to 50ºC) –...

  • Page 23: Bdc-4000 Block Down Converter Odu

    MBT-4000 Multi-Band Transceiver System Revision 4 Introduction MN/MBT4000.IOM 1.6.3 BDC-4000 Block Down Converter ODU Output Frequency Range 950 – 2000 MHz BUC-4000C 3400 – 4200 MHz BUC-4000X 7250 – 7750 MHz BUC-4000Ku 10.95 – 12.75 GHz Input Frequency BUC-4000Ka 20.20 – 21.20 GHz (by model) 17.70 –...

  • Page 24: Dimensional Envelope

    MBT-4000 Multi-Band Transceiver System Revision 4 Introduction MN/MBT4000.IOM Dimensional Envelope Figure 1-4. MBT-4000 Dimensional Envelope 1–6...

  • Page 25: Chapter 2. Installation

    Cut the tape at the top of the carton indicated by OPEN THIS END. Remove the cardboard/foam space covering the MBT-4000. Remove the MBT-4000 and manual from the carton. Save the packing material for storage or reshipment purposes. Inspect the equipment for any possible damage incurred during shipment.

  • Page 26: Installation

    Base unit, allowing removal and replacement of the existing modules with appropriate band-specific modules. Operation Once all pertinent connections have been made between the MBT-4000 and other equipment, refer to Chapter 4. SYSTEM OPERATING PARAMETERS for further information. 2–2...

  • Page 27: Chapter 3. External Connectors

    As shown in Figure 3-1, connectors provided on the MBT4000 Multi-Band Transceiver System provide all necessary external connections between the the transceiver and other equipment. Note: This figure depicts an MBT-4000 configuration with (1) BUC-4000 Block Up Converter Module and (1) BDC-4000 Block Down Converter Module installed.

  • Page 28: Mbt-4000 External Connectors

    MBT-4000 Multi-Band Transceiver System Revision 4 External Connectors MN/MBT4000.IOM MBT-4000 External Connectors Table 3-1 summarizes the external connections and identifies the chapter sections providing connector pinout information. Table 3-1. MBT-4000 External Connectors Signal Side Module Name Sect. Function (Sect.) AC Power POWER 3.2.1.1...

  • Page 29: 3.2.1 If Signal Side Connectors

    MBT-4000 Multi-Band Transceiver System Revision 4 External Connectors MN/MBT4000.IOM 3.2.1 IF Signal Side Connectors 3.2.1.1 POWER (J1) Table 3-2. POWER (J1) Pin Connections Signal LINE NEUTRAL NOTE - Mating Connectors: CEFD P/N CN/MS-STPG03F02 (ITT Cannon KPT06B-12-3S) 3.2.1.2 COMM (J2) Table 3-3. COMM (J2) Connector Pinouts...

  • Page 30: Unit 1 Comm (J3)

    3.2.1.3 UNIT 1 COMM (J3) The J3 UNIT 1 COMM connector is used for connecting the MBT-4000 Base Module Unit 1 section to the J6 COMM connector featured on both the BUC-4000 Block Up Converter and BDC-4000 Block Down Converter Modules via the 15-15 Power &...

  • Page 31: If Switch (J4)

    MBT-4000 Multi-Band Transceiver System Revision 4 External Connectors MN/MBT4000.IOM 3.2.1.4 IF Switch (J4) Table 3-5. IF Switch (J4) Connector Pinouts Signal POS 1 IF POS 2 IF POS 1 IND IF POS 2 IND IF NOTE - Mating Connectors: CEFD P/N CN/MS3116J10-6P (Cannon MS3116J10-6P) 3.2.1.5...

  • Page 32: Unit 2 Comm (J6)

    3.2.1.6 UNIT 2 COMM (J6) The J6 UNIT 2 COMM connector is used for connecting the MBT-4000 Base Module Unit 2 section to the J6 COMM connector featured on both the BUC-4000 Block Up Converter and BDC-4000 Block Down Converter Modules, via the 15-15 Power &...

  • Page 33: Ground Connector

    The J6 COMM connector, featured on both the BUC-4000 Block Up Converter and BDC-4000 Block Down Converter Modules, is used for connecting the module to the MBT-4000 Base Module J3 UNIT 1 COMM or J6 UNIT 2 COMM connectors via the 15-15 Power & Signal Harness (CEFD P/N CA/WR10963-1), as shown in Figure 3-2 and Figure 3-3.

  • Page 34: If Out (J4, Bdc-4000 Only)

    3.2.2 RF Signal Side Connectors 3.2.2.1 REDUNDANT LOOP (J7) The J7 REDUNDANT LOOP connector is used to connect the MBT-4000 Base Module, via the Redundant Loop Bus Cable (CEFD P/N CA/WR11224), to another base unit for a dual base (redundant) setup.

  • Page 35: Aux Comm 2 (J8)

    MBT-4000 Multi-Band Transceiver System Revision 4 External Connectors MN/MBT4000.IOM 3.2.2.2 AUX COMM 2 (J8) Table 3-9. AUX COMM 2 (J8) Connector Pinouts Signal AUX Rx + B AUX Rx – B AUX Tx + B AUX Tx – B +12.6V LNA B...

  • Page 36: Rf Switch (J10)

    MBT-4000 Multi-Band Transceiver System Revision 4 External Connectors MN/MBT4000.IOM 3.2.2.4 RF SWITCH (J10) Table 3-11. RF Switch (J10) Connector Pinouts Signal POS 1 RF POS 2 RF POS 1 IND RF POS 2 IND RF NOTE – Mating Connectors: CEFD P/N CN/MS3116J10-6P (Cannon MS3116J10-6P) 3.2.2.5...

  • Page 37: Chapter 4. System Operating Parameters

    BDC-4000 Block Down Converter, are provided in this chapter. Remote Configuration, Monitoring and Control Remote monitoring and control (M&C) of the MBT-4000 is possible via use of a remotely- connected PC or dumb terminal. From this location, the user may issue commands and queries to configure, control, and monitor one or more MBT-4000 systems.

  • Page 38: Block Down Converter Module (Bdc-4000) Operating Parameters

    Figure 4-1 illustrates the location of the LED Indicators. Located on the top of the MBT-4000’s Base Module under a pivoting protective plate, the LEDs may be viewed by loosening the thumbscrew that keeps the plate in place;...

  • Page 39: Chapter 5. Flash Upgrading

    PC intended for Monitor and Control (M&C) of the MBT-4000 system. • By simply connecting the MBT-4000 to an available serial port on the user-provided PC, the upgrade can then be performed without opening the MBT-4000 base unit. (Note: The block up and down converter modules are factory-serviced items, and are not updated during this procedure.)

  • Page 40: 5.2.1 Firmware File Transfer Procedure

    MN/MBT4000.IOM 5.2.1 Firmware File Transfer Procedure 1. Identify the reflashable product, firmware number, and version for download. Using serial remote control, the current MBT-4000 firmware revision can be determined with the following query: <0/ FRW? 2. Create a temporary directory (folder) on the user-provided external PC.

  • Page 41: Flash Upgrade Procedure

    MBT-4000 Multi-Band Transceiver System Revision 4 Flash Upgrading MN/MBT4000.IOM 4. Extract the files to the temporary folder on the PC, then verify the success of the file extraction and transfer via the dir command. At least four files should be extracted: •...
  • Page 42 MBT-4000 Multi-Band Transceiver System Revision 4 Flash Upgrading MN/MBT4000.IOM Double-click FLSHCSAT.EXE (filename or icon) to execute the flash upload utility. From the FLSHCSAT window, select the pertinent serial port used for communication between the user-provided PC and the MBT-4000. (In this example, as noted at ‘A’, COM1 has been...
  • Page 43 When prompted, reconnect the power cable to the Base Unit. Once communication has been established between the PC and MBT-4000, the upload will take place – do not interrupt this upload process. Note: If the upload is not successful for any reason –...
  • Page 44 System Programming Cable (CEFD P/N CA/WR12243-1) and reconnect the original System Communications Connection Cable. The LEDs on the MBT-4000 Base Unit will illuminate GREEN (unmuted) or YELLOW (muted) to indicate the current status of the Unit 1 and Unit 2 modules.

  • Page 45: Appendix A. Remote Control

    Overview This appendix describes the protocol and message command set for remote monitor and control of the MBT-4000 Multi-Band Transceiver System (more specifically, the BUC-4000 and BDC-4000 modules). The electrical interface is either an RS-485 multi-drop bus (for the control of many devices) or an RS-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form using ASCII characters.

  • Page 46: Basic Protocol

    MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM RS-232 This is a much simpler configuration in which the Controller device is connected directly to the Target via a two-wire-plus-ground connection. Controller-to-Target data is carried, via RS-232 electrical levels, on one conductor, and Target-to-Controller data is carried in the other direction on the other conductor.

  • Page 47: Start Of Packet

    The BDC and BUC subdevices may also be addressed by appending the corresponding subdevice address. The subdevice address is ‘A1’ for the BUC and ‘A2’ for the BDC. For example, a mute command addressed to a BUC attached to an MBT-4000 at address 0412 will be: <0412A1/MUT=1{CR} The format of the response will be: >0412A1/MUT={CR}{LF}...

  • Page 48: Instruction Code Qualifier

    MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM A.5.5 Instruction Code Qualifier This single character further qualifies the preceding instruction code. Code Qualifiers obey the following rules: 1. From Controller-to-Target, the only permitted values are: The = code is used as the assignment operator, and is used to indicate that the...

  • Page 49: Optional Message Arguments

    MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM A.5.6 Optional Message Arguments Arguments are not required for all messages. Arguments are ASCII codes for the characters 0 to 9 (ASCII codes 48-57), period (ASCII code 46), and comma (ASCII code 44).

  • Page 50: Remote Commands And Queries

    MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Remote Commands and Queries Where Column ‘C’ = Command; Column ‘Q’ = Query: Columns marked ( ) indicate Command only, Query only, or Command/Query for Instruction Code. Instr Code Page Instr Code...
  • Page 51 CAI=(message OK) CAI?n CAI=nabcd COMM I/O 1=AUX Used to Query the Concise AUX COMM I/O of the MBT-4000 CAI? (received OK, (see description COMM 1 base unit, where: n=1 (AUX COMM 1) or 2 (AUX COMM 2) but invalid arguments...
  • Page 52 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 53 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 54 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 55 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 56 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 57 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 58 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 59 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 60 Query only. RAI = (message OK) RAI?n RAI=x….x value of Used to Retrieve AUX COMM I/O of the MBT-4000 base unit, RAI? (received OK, (see description COMM I/O n=1 or 2 where: n=1 (Aux Comm 1) or 2 (Aux Comm 2).
  • Page 61 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 62 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 63 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 64 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 65 999999999 arguments) Example: RSN=000000165 Retrieve 24 bytes Query only. RUS? RUS=x….x Utility Status alphanumeric Used to Query the utility status of the MBT-4000 base unit.. (see description for details of Example: arguments) <0001/RUS={cr} >0001/RUS={cr}{lf} ADR=0001{cr} BDR=9600{cr}{lf} Remote Baud SBR=xxxx 4 bytes, Command or Query.
  • Page 66 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 67 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...
  • Page 68 MBT-4000 Multi-Band Transceiver System Revision 4 Remote Control MN/MBT4000.IOM Command Valid on Arguments Response to Query Response to Description of Arguments Parameter (Instruction MBT, for Command Command (Instruction Query (Note that all arguments are ASCII numeric codes – i.e., Type...

  • Page 69: Appendix B. Faults/Events

    As shown in Figure B-1, the LEDs are found on the top of the MBT-4000’s base module, under a protective plate. To view the LEDs, loosen the thumbscrew that keeps the plate in place, then swing the plate away to reveal the LED display window.

  • Page 70: Faults/Events

    If a Summary Fault occurs on the online unit of a redundant pair, the offline unit will detect the fault and assume online state. In all cases, a corresponding event message will be added to the event log. Table B-1. MBT-4000 Summary Faults Mnemonic Type...

  • Page 71: B.2.2 Configurable Summary Faults

    Faults/Events MN/MBT4000.IOM B.2.2 Configurable Summary Faults Configurable Summary Faults operate the same as Summary Faults, except Configurable Summary Faults may be enabled/disabled via remote commands. Table B-3. MBT-4000 Configurable Summary Faults Mnemonic Type Mute Description The IO1A/FAULT input (AUX COMM 1) indicates a fault.

  • Page 72: B.2.3 Informational Events

    LCS, CLC and LCW commands. B.2.3 Informational Events Informational Events are operation conditions which may be important, but are not considered improper operation and will not cause a converter to mute. Table B-5. MBT-4000 Informational Events Mnemonic Type Mute...

  • Page 73: Appendix C. Redundancy Configuration / Operation

    The MBT-4000 is designed to operate in both stand-alone and redundant configurations. Every MBT-4000 base contains the circuitry and logic necessary to perform all the functions of a backup controller in either a single base and dual base configuration. The BDC-4000 is capable of supplying LNA power over the center conductor of the coaxial cable.

  • Page 74: Dual-Base (Chain) Redundancy Operation

    Figure C-1 illustrates a typical Dual-Base (Chain) Redundancy configuration. The two MBT-4000 base units cooperate in monitoring the health of the four BxCs (and each other). In case of a fault on an online BxC the MBT-4000 base containing the corresponding standby BxC, will automatically switch over to the standby BxC in accordance with the following rules: 1.

  • Page 75: External Fault Monitoring

    B. For a switchover to occur: 1. Both MBT-4000 base units must be set to redundancy mode 2, the RED=2 command must have been received by each base. 2. Both BxCs must be set to automatic mode. For example, if the redundant pair is on Slot 2 of the bases, the command RAM=21 must have been received by each base.

  • Page 76: Gain Equalization Of Redundant Units

    If a current is detected outside this window, a LNA current fault will be posted, but the supply will not be disabled. Gain Equalization of Redundant Units Gain equalization in an MBT-4000 system is accomplished by issuing individual attenuation settings to the specific BxCs. Operational Configuration Commands In automatic redundancy mode, configuration commands (with the exception of attenuation and LNA power supply configuration) sent to the online unit will be mirrored in the offline unit.
  • Page 77 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 0.254 — 25.4 1.578 x 10 1 foot 30.480 12.0 —...
  • Page 78 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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