Motorola MBV3-100S Instructions d'exploitation

Naviguer en ligne ou télécharger Instructions d'exploitation pour Amplificateurs audio Motorola MBV3-100S. Motorola MBV3-100S Operating instructions Manuel d'utilisatio

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Résumé du contenu

Page 2

1-4 Introduction If You Need Help If you need assistance while working with the MBV3-100*, contact the Motorola Technical Support Call Center (TSCC):

Page 3

Introduction 1-5 The e-mail address for the Call Management System is: [email protected]. Or, you may call the following toll-free individu

Page 4 - Contents

Section 2 Overview The MBV3-100* is a balanced three output amplifier used in CATV distribution systems. All models are high-gain, three-stage hybrid

Page 5 - Appendix B

2-2 Overview Ordering Matrix Several models of the MBV3-100* are available. The MBV3-100* is fully configured in the factory per model requested. You

Page 6 - Figures

Overview 2-3 Housing The MBV3-100* is furnished in an MB-HSG aluminum housing that protects the electronics from weather and dissipates internally

Page 7 - Introduction

2-4 Overview Coaxial cable connections to the housing are made using conventional 5/8 × 24 threads per-inch stinger-type connectors. Five port plugs

Page 8 - MBV3-100* — open

Overview 2-5 Gaskets Each housing is equipped with a recessed woven-wire RF gasket and a silicone-rubber weather gasket to provide a seal between t

Page 9 - Document Conventions

2-6 Overview Port Locations Although there are five port plugs in the cover of the MBV3-100* only the input test point enables user access (Figure 2-

Page 10 - Calling for Repairs

Overview 2-7 Figure 2-7 illustrates the MPPS-II installed in the lid of the MBV3-100*. Figure 2-7 MPPS-II power pack The MPPS-II also contains a

Page 11 - Introduction 1-5

2-8 Overview Figure 2-8 illustrates the location of the LO/HI voltage selector and the FTEC surge protector on the MPPS-II. Figure 2-8 MBV3-100* pow

Page 12 - Overview

Caution These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing ot

Page 13 - Ordering Matrix

Overview 2-9 Factory installed 20-amp fuses, illustrated in Figure 2-9, provide power passing to additional amplifiers. Figure 2-9 Power passing f

Page 14 - Housing

2-10 Overview Figure 2-10 illustrates the interconnection between these components in the triple-output MBV3-100*. Figure 2-10 MBV3-100* block diagr

Page 15 - 2-4 Overview

Overview 2-11 Return Path The circuit board of the MBV3-100* amplifier includes the return path. This equips the MBV3-100* to pass signals in the r

Page 16 - Gaskets

2-12 Overview Options and Accessories The factory ships the MBV3-100* as a fully functional unit, but you must configure it appropriately for the fie

Page 17 - Port Locations

Overview 2-13 Figure 2-11 illustrates the location of options and accessories in the MBV3-100*. Figure 2-11 MBV3-100* options and accessories SRE

Page 18 - MPPS-II power pack

Section 3 Amplifier Setup This section provides instructions on how to properly handle and configure the MBV3-100*. It also describes the proper forw

Page 19 - MBV3-100* power supply

3-2 Amplifier Setup To successfully setup the MBV3-100*, you need to perform the following tasks:  Forward path alignment  Return path alignment

Page 20 - Forward Path

Amplifier Setup 3-3  Field-sweep the entire bandwidth of the amplifier to correct frequency response for passive signature and roll-off.  Close

Page 21 - MBV3-100* block diagram

3-4 Amplifier Setup Substituting this information into the above equation provides the following result: 11 dB + 26.0 dB − 12 dBmV − 14 dB = 11.0 dB

Page 22 - Ingress Control Switch

Amplifier Setup 3-5 Figure 3-1 illustrates a graph of the equalizer slope versus equalizer value information presented in Table 3-1. The amount of

Page 23 - Options and Accessories

Declaration of Conformity We Motorola, Inc. 101 Tournament Drive Horsham, PA 19044, U.S.A. declare under our sole responsibility that the STARLINE®M

Page 24 - Overview 2-13

3-6 Amplifier Setup STARLINE Cable Simulators STARLINE cable simulators, model SCS-*, are used in place of fixed equalizers in systems where: (1) the

Page 25 - Amplifier Setup

Amplifier Setup 3-7 The information in Table 3-2 is shown as a graph in Figure 3-2: Figure 3-2 Frequency versus cable slope 01-1-2-3-4-5-6-7-8-9-1

Page 26 - Forward Path Alignment

3-8 Amplifier Setup Figure 3-3 Flatness controls You can adjust the variable resistors and capacitors on the MDR board to flatten the response acr

Page 27 - STARLINE Forward Equalizers

Amplifier Setup 3-9 Directional Coupler Test Points Accurate −20 dB directional-coupler test points are available at the input and at the output of

Page 28 - 3-4 Amplifier Setup

3-10 Amplifier Setup 7 Turn the manual gain reserve (MAN) control (illustrated in Figure 2-12) to maximum (fully clockwise) and then reduce the outpu

Page 29 - Amplifier Setup 3-5

Amplifier Setup 3-11 Vertical Automatic Drive Unit/QAM Automatic Drive Unit The VADU and VQADU operate by using surface acoustic wave (SAW) filters

Page 30 - STARLINE Cable Simulators

3-12 Amplifier Setup 4 Connect a signal-level meter to the FWD OUT test point and tune the meter to the high band-edge carrier. 5 Turn the auto leve

Page 31 - Flatness Control

Amplifier Setup 3-13  Do not use wire jumpers to bypass the SRE-*-* location  Perform the return optical link set up before performing amplifie

Page 32 - 3-8 Amplifier Setup

3-14 Amplifier Setup Powering and Surge Protection In conventional applications, MBV3-100*s are powered through the input port. CAUTION! To avoid da

Page 33 - Amplifier Level Control

Section 4 Bench Testing Motorola’s recommended procedure for placing a new MBV3-100* into service is to fully test it on the bench before it is field

Page 34 - 3-10 Amplifier Setup

Contents Section 1 Introduction Using This Manual ...

Page 35 - DRIVE UNIT

4-2 Bench Testing Test Equipment and Connections The equipment typically used for testing the MBV3-100* consists of a network analyzer, such as the H

Page 36 - Return Path Alignment

Bench Testing 4-3 Measuring Forward Gain This subsection provides instructions for measuring the full gain and the operational gain and flatness of

Page 37 - Alignment Procedure

4-4 Bench Testing To measure the operational gain and flatness of the amplifier: 1 Perform steps 1 through 6 in Measuring Forward Gain above. 2 Est

Page 38 - 3-14 Amplifier Setup

Bench Testing 4-5 4 Measure the gain at the maximum return band frequency (example, 40 MHz for S-split). The amplifier gain is the sum of: the m

Page 39 - Bench Testing

Section 5 Installation The field installation procedures presented in the following subsections assume that the amplifier was previously tested and b

Page 40 - 4-2 Bench Testing

5-2 Installation 9 Check the AC voltage setting (jumper J1, Figure 2-8). J1 position Description LO The voltage must be greater than 38 VAC as read

Page 41 - Measuring Forward Gain

Installation 5-3 Pedestal Installation Pedestal installation is similar to the aerial installation with the exception of temperature and mounting p

Page 42 - 4-4 Bench Testing

Section 6 Operating Tips This section describes using amplifiers in lower frequency systems and in lower gain systems. Using Amplifiers in Lower Freq

Page 43 - Bench Testing 4-5

Appendix A Specifications Specifications are valid over the given bandpass and operating temperature range of −40°F to +140°F (−40°C to +60°C). Speci

Page 44 - Installation

A-2 Specifications AC Current AC Voltage AC current (rms) 90 VAC 0.81 A 75 VAC 1.0 A 60 VAC 1.3 A 53 VAC 1.45 A 45 VAC 1.7 A 38 VAC 2.0 A Retu

Page 45 - 5-2 Installation

ii Contents Vertical Automatic Drive Unit/QAM Automatic Drive Unit...

Page 46 - Grounding

Appendix B Torque Specifications Torque specifications are valid for all models of the MBV3-100*. Torque Fastener Screw Size Wrench Size In-lbs

Page 47 - Operating Tips

Abbreviations and Acronyms The abbreviations and acronyms list contains the full spelling of the short forms used in this manual. VADU Vertical Au

Page 48 - Specifications

556522-0013/09Visit our website at:www.motorola.com-a

Page 49 - VADU Automatic Drive Unit

Contents iii Figures Figure 1-1 MBV3-100* — closed...

Page 50 - Torque Specifications

Section 1 Introduction The Motorola® 1 GHz STARLINE® series of MiniBridger amplifiers, model MBV3-100*, accept a single input and provide high operat

Page 51 - Abbreviations and Acronyms

1-2 Introduction Figure 1-2 illustrates an open MBV3-100*. Figure 1-2 MBV3-100* — open MBV3-100* Installation and Operation Manual

Page 52 - Visit our website at:

Introduction 1-3 Using This Manual The following sections provide information and instructions to bench test, install, and operate the MBV3-100*. S

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