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):
Introduction 1-5 The e-mail address for the Call Management System is: [email protected]. Or, you may call the following toll-free individu
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
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
Overview 2-3 Housing The MBV3-100* is furnished in an MB-HSG aluminum housing that protects the electronics from weather and dissipates internally
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
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
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-
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
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
Caution These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing ot
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
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
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
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
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
Section 3 Amplifier Setup This section provides instructions on how to properly handle and configure the MBV3-100*. It also describes the proper forw
3-2 Amplifier Setup To successfully setup the MBV3-100*, you need to perform the following tasks: Forward path alignment Return path alignment
Amplifier Setup 3-3 Field-sweep the entire bandwidth of the amplifier to correct frequency response for passive signature and roll-off. Close
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
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
Declaration of Conformity We Motorola, Inc. 101 Tournament Drive Horsham, PA 19044, U.S.A. declare under our sole responsibility that the STARLINE®M
3-6 Amplifier Setup STARLINE Cable Simulators STARLINE cable simulators, model SCS-*, are used in place of fixed equalizers in systems where: (1) the
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
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
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
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
Amplifier Setup 3-11 Vertical Automatic Drive Unit/QAM Automatic Drive Unit The VADU and VQADU operate by using surface acoustic wave (SAW) filters
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
Amplifier Setup 3-13 Do not use wire jumpers to bypass the SRE-*-* location Perform the return optical link set up before performing amplifie
3-14 Amplifier Setup Powering and Surge Protection In conventional applications, MBV3-100*s are powered through the input port. CAUTION! To avoid da
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
Contents Section 1 Introduction Using This Manual ...
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
Bench Testing 4-3 Measuring Forward Gain This subsection provides instructions for measuring the full gain and the operational gain and flatness of
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
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
Section 5 Installation The field installation procedures presented in the following subsections assume that the amplifier was previously tested and b
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
Installation 5-3 Pedestal Installation Pedestal installation is similar to the aerial installation with the exception of temperature and mounting p
Section 6 Operating Tips This section describes using amplifiers in lower frequency systems and in lower gain systems. Using Amplifiers in Lower Freq
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
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
ii Contents Vertical Automatic Drive Unit/QAM Automatic Drive Unit...
Appendix B Torque Specifications Torque specifications are valid for all models of the MBV3-100*. Torque Fastener Screw Size Wrench Size In-lbs
Abbreviations and Acronyms The abbreviations and acronyms list contains the full spelling of the short forms used in this manual. VADU Vertical Au
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Contents iii Figures Figure 1-1 MBV3-100* — closed...
Section 1 Introduction The Motorola® 1 GHz STARLINE® series of MiniBridger amplifiers, model MBV3-100*, accept a single input and provide high operat
1-2 Introduction Figure 1-2 illustrates an open MBV3-100*. Figure 1-2 MBV3-100* — open MBV3-100* Installation and Operation Manual
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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