Diamond Line Type 1 and Type 2 Amplifiers

TM Diamond Line Type 1 and Type 2 Amplifiers Reference & Installation Manual Part Number: 2244001 Rev. D 06/03

Diamond Line Series Type 1 and Type 2 Amplifiers Reference and Installation Manual 2244001 Rev. D 06/03

This manual is produced and copyrighted by C-COR.net Corp. Any use or reproduction of the contents of this manual without the prior written consent of C-COR.net Corp. is strictly prohibited. Diamond and Power-Doubling are trademarks of C-COR.net Corp. Other trademarks, company names, titles, or services may be referred to in this document. Such references do not imply any endorsement of or affiliations with this material. Every effort has been made to adhere to the trademark or registered trademark holder's preferred style of spelling and capitalization. All product names are trademarks or registered trademarks of their respective owners. C-COR.net s products conform to applicable regulatory requirements, including USA Federal Communications Commission (FCC), European CENELEC (CE), and various other product safety or electromagnetic compatibility (EMC) standards. The equipment documented in this manual conforms to the protection requirements of the Low Voltage Directive 73/23/EEC, as amended by Council Directive 93/68/EEC, and the Electromagnetic Compatibility Directive (EMC) 89/336/EEC, as amended by 92/31/EEC and 93/68/EEC. Additional compliance testing is performed as necessary to maintain approvals following product variations or design modifications.

Doc. 2244001, Rev. D Contents Introduction... 1 About This Manual... 2 Contacting C-COR... 3 Customer Service... 3 Technical Support... 3 Repair Services... 3 Training... 3 Technical Publications... 4 Safety... 5 Safety Symbols... 5 Diamond Line Series Overview... 6 Diamond Line Features and Benefits... 7 Diamond Line 1 Amplifier... 9 Equipment Description... 10 Module Label Description... 11 Model Numbers (module only)... 12 Configuration Model Number... 13 Functional Description... 15 Forward RF Signal Flow... 15 Secondary Path (after it splits from main path)... 17 Return RF Signal Flow... 18 Powering... 20 Controls and Connectors... 21 Plug-In Circuits... 23 Specifications... 25 Diamond Line 1 Network Amplifier... 25 Relative Chroma Delay... 26 Relative Group Delay: Return Signals... 27 Automatic Level & Slope Control (ALSC)... 28 Diamond Line 2 Amplifier... 29 Equipment Description... 30 Module Label... 31 Model Numbers (module only)... 32 Configuration Model Number... 33 Functional Description... 34 Forward RF Signal Flow... 34 Return RF Signal Flow... 37 Amplifier Powering... 39 Controls and Connectors... 40 Plug-In Circuits... 42 Specifications... 44 Diamond Line 2 Network Amplifier (Silicon Hybrids)... 44 Diamond Line 2 Network Amplifier (HO GaAs Hybrids)... 45 Relative Chroma Delay (NTSC System M)... 46 Amp iii

Doc. 2244001, Rev. D Relative Group Delay... 46 Automatic Level & Slope Control (ALSC)... 47 9-NH Series Amplifier Housing... 49 Equipment Description... 50 Model Numbers... 51 Functional Description... 51 Ports and Points of Connection... 52 Housing Label... 56 Specifications... 57 9-NH15 Series Housing... 57 Installing a Diamond Line Amplifier... 59 Installation Procedures... 60 Before You Start... 60 Tools and Equipment... 60 Installing the Designed Equalizers and Attenuators... 61 Installing the Secondary Output Port Selector... 62 Using Only One Output (J3 or J4)... 62 Using Both Outputs (J3 and J4)... 62 Installing the Fuses... 64 Terminating Ports... 65 Installing the Housing in the Field... 66 Opening the Housing... 68 Installing the Amplifier into the Housing... 69 Closing the Housing... 70 Setting up the Forward Cascade... 71 Setting Up a Forward Cascade... 72 Before You Start... 72 Tools and Equipment... 73 Set-Up instructions... 74 Preparing the Amplifier for Initial Setup... 74 Checking AC Power... 75 Checking the Input Levels... 75 Checking the Input Equalizer... 76 Checking the Input Attenuator... 76 Setting Up the ALSC... 77 Checking Secondary Output Levels... 77 Setting up the RF Return System... 79 Setting Up a Return System... 80 Basic Concepts... 80 Before You Start... 82 Tools and Equipment... 82 Setting Up an Optical Node (Diamond Marquise)... 84 Return Signal Flow Through the Node... 84 Set-Up Instructions... 84 Setting Up the RF Return Plant... 87 iv

Doc. 2244001, Rev. D Set Up Instructions... 87 Troubleshooting... 89 Problems and Possible Field Solutions... 90 Appendix... 93 Equalizer Insertion Losses... 94 Determining Values for 7-2E-WC Equalizers... 97 Input Equalizers... 97 Interstage & Distribution Equalizers... 98 Determining Values for Return Output Equalizers... 100 Checking Forward Sweep Response... 101 Before You Start... 101 Tools and Equipment... 102 Calculating Flatness... 102 Node Sweep Reference... 102 Sweeping and Adjusting Amplifiers... 103 EDB Response Equalizers... 105 Determining Attenuator Values... 108 Return Output Attenuators... 109 Amplifier Data Log... 110 Broadband Level and Slope Chart... 111 Determining the Temperature Offset... 112 Warranty... 113 Index... 117 Amp v

Doc. 2244001, Rev. D vi

Doc. 2244001, Rev. D Introduction Contents About This Manual... 2 Contacting C-COR... 3 Customer Service... 3 Technical Support... 3 Repair Services... 3 Training... 3 Technical Publications... 4 Safety... 5 Safety Symbols... 5 Diamond Line Series Overview... 6 Diamond Line Features and Benefits... 7 Amp Figures Figure 1. in a Network... 6 Introduction 1

Doc. 2244001, Rev. D About This Manual Diamond Line Series Type 1 and Type 2 Amplifiers Reference & Installation Manual describes Diamond Line 1 and 2 series amplifiers and the 9-NH series housings and provides instructions for installing amplifiers, setting up a forward cascade, setting up the RF return system, sweeping the system, and troubleshooting. This manual assumes that users have some experience with cable technologies and procedures. While some safety precautions are reviewed here, this manual assumes that installers have been trained in safe practices. Users new to cable technologies and servicing procedures should not rely on this manual for comprehensive guidance. New in this Edition This edition provides new information on high output GaAs Diamond Line 2 amplifiers as well as new customer-service contact information for Europe and the Asia/Pacific regions. In addition, the manual has been streamlined and the table of contents has been expanded to improve the manual s usability. 2 Introduction

Doc. 2244001, Rev. D Contacting C-COR Customer Service Technical Support Contact Customer Service if your product has been damaged during shipping. Phone 800-233-2267 Internet http://www.c-cor.net (Go to Support > Customer Service) Contact Technical Support for assistance with installed products. Phone 800-504-4443, option 3, or 203-630-5733 E-Mail techsupport@c-cor.net Internet http://www.c-cor.net (Go to Support > Technical Support) Amp Repair Services Training Contact Repair Services to request a Return Material Authorization (RMA) if you need to return a product for repair. Internet http://www.c-cor.net (Go to Support > Repair Services) Contact Technical Training for inquiries concerning product training. Please be prepared to provide a list of equipment you would like training on. Phone 800-504-4443, option 5 E-mail techtraining@c-cor.net Internet http://www.c-cor.net/training Fax 203-630-5767, Attn: Technical Training Introduction 3

Doc. 2244001, Rev. D Technical Publications C-COR Technical Publications welcomes your suggestions and assistance in identifying any errors, inaccuracies, or misleading information. Please reference the document number and page number(s) to which your feedback applies. You can also download a product manual (if currently available) from the C-COR website. E-Mail techpubs@c-cor.net Internet http://www.c-cor.net (Go to Support > Technical Publications) 4 Introduction

Doc. 2244001, Rev. D Safety This manual assumes that users have experience with CATV technologies and procedures (such as installing RF and fiber optic cable and equipment). While some safety precautions are reviewed here, it is assumed that technicians have been trained in safe installation and test practices. Technicians should not rely on this manual for comprehensive guidance. Safety Symbols The following symbols are used to emphasize instructions, cautions, and warnings. Amp Attention Important instructions. Only qualified service personnel should perform this procedure. CAUTION Sensitive Electronic Devices To avoid damaging electrostatic-sensitive components, make sure you are grounded when handling them, store modules in antistatic packages, and handle circuit boards and cards by the edges only. WARNING Dangerous Voltage There is a risk of potentially hazardous electrical shock; use extreme caution. WARNING Be absolutely certain that optical equipment at both ends of a fiber is off before performing any procedures. Even when a device is not powered, laser beams may be present in incoming fiber. Lasers can cause tissue injury, including permanent eye damage. Avoid direct contact with the end of optical cable when it is disconnected from a receiver or patch panel. Introduction 5

Doc. 2244001, Rev. D Diamond Line Series Overview Headend Equipment Optical Station Transmitter Receiver Figure 1. in a Network Diamond Line series amplifiers are located downstream of an optical station. The Diamond Line series offers two types of amplifier: Diamond Line 1 is a trunk amplifier, similar to the TNA series trunk network amplifier. It offers one low-level, high-performance RF output for trunk applications and two high-level outputs for distribution networks. Each secondary output has a post-amplifier hybrid; the main output is coupled from the interstage hybrid. Diamond Line 2 is a distribution amplifier, similar to the a GNA series global network amplifier. It offers two equal or three unequal high-level RF distribution outputs. It uses two post-amplifier hybrids, one for the main output and one for secondary outputs. A plug-in output port selector lets you choose either or both secondary outputs. Diamond Line series amplifier modules may be installed in a 9-NH series housing. (See 9-NH Series Amplifier Housing, starting on page 49.) 6 Introduction

Doc. 2244001, Rev. D Diamond Line Features and Benefits Diamond Line series amplifiers offer these features and benefits: Feature Wide operating range High-output option High-current capability Covered plug-ins Excellent return-path performance Accurate return setup Easy upgrades Accurate test points Response equalizer location available Forward and return level control Powering path features Benefit Both 750 and 870 MHz models are available. Reducing the number of actives increases network reliability and reduces operating costs. Diamond Line amplifiers typically achieve 65 db hum modulation while continuously passing 15 amps; they can withstand 25 amps for two hours. Field-accessible covered plug-in equalizers and attenuators come with guides that simplify installation. On-board return-path circuitry offers improved compression point and bit error rate (BER) for digital-loaded traffic over a discrete amplifier design. Each return leg has its own input test point. a Each return leg also has its own plug-in attenuator location, allowing you to isolate ingress. b On the combined return output, an equalizer, an attenuator, and a directional coupler test point allow accurate setting of the combined signal. Return test signals are injected at any forward output test point. Diamond Line amplifiers enable quick, easy upgrading of older 550 and 750 MHz equipment using the existing housings. Amplifiers require a housing capable of continuously passing 15 amps of power. Directional coupler test points isolate the measured forward output signal from the effects of reflections in the cable. An interstage response equalizer (debumper) may be installed to compensate for system conditions. Automatic level and slope control (ALSC) models maintain forward levels despite fluctuations in cable attenuation. The input power range is 40 to 90 volts. A 90%-efficient power supply, integral to the RF module, minimizes the possibility that the system power supply will go into a foldback condition. A crowbar circuit is standard. Power directors and line-voltage test point are easily accessible. Amp a. Diamond Line 1 and 2 amplifiers, which combine return signals from multiple legs, use resistive return input test points to decrease insertion loss. b. As long as the previous amplifier s return output levels are set properly, you shouldn t need to use return input attenuators to make level adjustments. However, if there are no actives downstream of the amplifier, use these attenuators to adjust signal levels going into the return hybrid, for example, to make the signal levels from the return legs equal. (See Forward Input Attenuators, starting on page 108.) Introduction 7

Doc. 2244001, Rev. D 8 Introduction

Doc. 2244001, Rev. D Diamond Line 1 Amplifier Contents Equipment Description... 10 Module Label Description... 11 Model Numbers (module only)... 12 Configuration Model Number... 13 Functional Description... 15 Forward RF Signal Flow... 15 Secondary Path (after it splits from main path)... 17 Return RF Signal Flow... 18 Powering... 20 Controls and Connectors... 21 Plug-In Circuits... 23 Specifications... 25 Diamond Line 1 Network Amplifier... 25 Relative Chroma Delay... 26 Relative Group Delay: Return Signals... 27 Automatic Level & Slope Control (ALSC)... 28 Amp Figures Figure 2. Diamond Line 1 Amplifier, Front View... 10 Figure 3. Diamond Line 1 Model Numbers... 12 Figure 4. Diamond Line 1 Configuration Model Number... 13 Figure 5. Diamond Line 1 Functional Block Diagram... 15 Figure 6. Diamond Line 1 Controls & Connectors... 21 Figure 7. Diamond Line 1 Plug-In Locations... 23 Figure 8. Relative Group Delay (Return), 42/54 Split... 27 Figure 9. Relative Group Delays (Return), 65/85 Split... 27 Diamond Line 1 Amplifier 9

Doc. 2244001, Rev. D Equipment Description Module Label Figure 2. Diamond Line 1 Amplifier, Front View The Diamond Line 1 amplifier is a trunk amplifier, similar in function to TNA series trunk network amplifiers. Diamond Line 1 amplifiers have one low-level, high-performance RF output for trunk applications and two high-level outputs for distribution networks. Each output has its own post-amplifier hybrid. Each amplifier s module label provides coded configuration information. See Module Label Description on page 11. 10 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Module Label Description Each amplifier s module label provides configuration information for the amplifier as it was shipped. Use this key to read the label. _ - A _ 9 8 / _ / _ _ Upgrade Compatibility 6-T3A = TNA (Diamond Line 1, Silicon Hybrids) 6-G3A = GNA (Diamond Line 2, Silicon Hybrids) 8-G4A = GNA (Diamond Line 2, HO GaAs Hybrids) Number of Output Hybrids 3 = Diamond Line 1 2 = Diamond Line 2 Amp Highest Forward Frequency 8 = 870 MHz Station Main Output Operating Gain in db (31 or 40 db depending on model; figures include ALSC-related loss and 1 db loss in input equalizer) Bandsplit 42 / 54 MHz 65 / 85 MHz (6-T3A version) ALSC Pilot Frequency 423 = 423.25 MHz 426 = 426.25 MHz 427 = 427.25 MHz 433 = 433.25 MHz 495 = 495.25 MHz 499 = 499.25 MHz Station Main Output Tilt (at highest frequency) 080 = 8.0 db 100 = 10.0 db 110 = 11.0 db 125 = 12.5 db 147 = 14.7 db Diamond Line 1 Amplifier 11

Doc. 2244001, Rev. D Model Numbers (module only) Note that model numbers will not match the module label if an ALSC has been changed. 6 T3A39_/ / 4 _ Silicon Hybrids Diamond Line 1 Amplifier Station Main Output Tilt (over the forward bandwidth) 125 = 12.5 db 3 Output Hybrids Series 9 (1 GHz platform) Highest Forward Frequency 7=750 MHz 8=870 MHz Station Main Output Gain 28 =28 db 31 =31 db (includes losses from ALSC and 1 db loss from input equalizer) ALSC Pilot Frequency for example 427 = 427.25 MHz 499 = 499.25 MHz Bandsplit (diplex filter) 42/54 =5 42 MHz, return 54-750 MHz, forward 54-870 MHz, forward 65/85=5-65 MHz, return 85-870 MHz, forward Figure 3. Diamond Line 1 Model Numbers The Diamond Line 1 amplifier modules vary in ALSC pilot frequency and station main output tilt. Diamond Line 1 amplifier models vary in three ways: amount of station main output gain, automatic level and slope control (ALSC) pilot frequency, and station main output tilt. For example, model 6-T3A398/28-42/54/427-125 (variable elements underlined) specifies the following: 28 db station main output gain, a 427.25 MHz ALSC pilot frequency, and 10 db station main output tilt over the forward bandwidth. 12 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Configuration Model Number The configuration model number appears on the shipping carton only. T3A63 C_ L _ 9 _C1 Diamond Line 1 Amplifier Silicon Hybrids 3 Output Hybrids Highest Forward Frequency 7=750 MHz 8=870 MHz Bandsplit D=42/54 F =65/85 Station Main Output Gain 28 db or 31 db (incl. losses from ALSC and 1 db loss from input equalizer) Element- Management (EMS) Capable Surge Protection 90V Crowbar Station Main Output Tilt (at highest frequency) 2 = 12.5 db 3 = 11.0 db 4 = 10.0 db 5 = 14.7 db Plug-In Return Amp Hybrid Amp Powering 90 VAC, 3A Housing A = None B = 9-NHD-15/I/PED K = 9-NH15 L = 9-NH15/CA M = 9-NH15/I R = 9-NH15/I/PED/CA V = 9-NHD-15 ALSC Pilot Frequency LD = 423.25 MHz LE = 426.25 MHz LF = 427.25 MHz LG = 433.25 MHz LJ = 499.25 MHz Figure 4. Diamond Line 1 Configuration Model Number A Diamond Line 1 amplifier configuration combines a particular amplifier module with a particular housing. Diamond Line 1 amplifier configuration numbers tell which amplifier module is installed in which housing. For example, configuration T3A638D28-CVLF94C1 (variable elements underlined) specifies the following: Diamond Line 1 Amplifier 13

Doc. 2244001, Rev. D a Diamond Line 1 amplifier module like the example given on page 12 (28 db station main output gain, ALSC pilot frequency of 427.25 MHz, and 10 db station main output tilt at highest frequency) and a 9-NHD-15 housing (9-NH15 series housing with deep lid, as required for element management). For more on 9-NH housing model numbers, see page 51. 14 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Functional Description Amp Figure 5. Diamond Line 1 Functional Block Diagram The Diamond Line 1 amplifier has one low-level, high-performance RF output for trunk applications (main output) and two high-level outputs for distribution networks (secondary outputs). Each secondary output has its own post-amplifier hybrid; the main output is coupled from the interstage hybrid. For details on the forward RF signal flow, see page 15. For details on the return RF signal flow, see page 18. For a description of amplifier powering, see page 20. Forward RF Signal Flow In summary, forward RF signals enter the Diamond Line 1 amplifier module through the input port, J1, and are amplified by the pre-amplifier. The main output signals are amplified once more after the pre-amplifier before exiting through the main output (low-level) port, J2. The secondary-output signals are amplified twice more after the pre-amplifier before exiting through the two distribution (high-level) output ports, J3 and J4. The return RF signal flow is the same for all three of the Diamond Line 1 amplifier s return legs, from ports J2, J3, and J4 to port J1. Before Main & Secondary Paths Split Input Port (J1) The input port, J1, routes forward incoming signal to the amplifier. (This port also routes outgoing return signal to the main cable.) Diamond Line 1 Amplifier 15

Doc. 2244001, Rev. D Amplifiers are shipped with input attenuator and input equalizer positions empty; both plug-ins are required for operation. Input Test Point The input test point is a -20 db directional coupler. Accessible through a cut-out in the module cover, this test point allows verification of the forward signals at the forward input port (J1) without interrupting the amplifier s operation. (Return signal cannot be measured here.) Input Diplex Filter A diplex filter consists of a pair of filters, a high-pass and a low-pass, isolating forward and return bands. The high-pass filter passes forward signals but blocks return signals and AC. The low-pass filter passes return signals but blocks forward signals. Input Attenuator A plug-in attenuator reduces RF levels at the pre-amplifier s input to meet design specifications. Amplifiers are shipped with the input attenuator position empty. Select and install the appropriate value based on network design. Input Equalizer The plug-in equalizer compensates for the effects of cable preceding the amplifier module. Amplifiers are shipped with the input equalizer position empty. Select and install the appropriate value based on network design. Pre-Amplifier This pre-amplifier sets the amplifier s noise figure. Interstage Attenuator An interstage attenuator reduces overall amplifier gain. A zero attenuator or jumper is shipped in this slot for circuit continuity. ALSC Bode Equalizer (factory-installed) The ALSC Bode equalizer works with the ALSC Bode controller to maintain a constant RF output level, compensating for the effects of outside temperature changes on cable. Response Equalizer An EDB series response equalizer (debumper) flattens the forward response of cascaded amplifiers, compensating for system signature imperfections. A jumper is shipped in this slot for circuit continuity. Interstage Equalizer (factory-installed) This equalizer is factory-installed to optimize the amplifier s distortion characteristic and provide the desired main output slope at the specified bandwidth. Normally you will 16 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D not change this plug-in. However, if you need to change the tilt of the amplifier s outputs from the factory-set value, see the procedure under Interstage & Distribution Equalizers on page 98. Main Output/Interstage Amplifier The RF from this hybrid goes to the main output port and to the two secondary post-amplifiers. ALSC Bode Controller (factory-installed) The automatic level and slope control (ALSC) Bode controller works with the ALSC Bode equalizer to maintain a constant RF output level, compensating for the effects of outside temperature changes on cable. A directional coupler taps a small portion of the main output power and converts it to a DC signal that controls the Bode equalizer. Amp The main output test point allows you to inject return test signals. Secondary Path (after it splits from main path) Main Path (after it splits from secondary path) Main Output Diplex Filter See Input Diplex Filter on page 16. Main Output Test Point The main output test point is a -20 db directional coupler, which isolates the measured forward signal from the effects of reflections in the cable. Accessible through a cut-out in the module cover, this test point lets you verify the forward signals at the main output port (J2) without interrupting the amplifier s operation. Main Output Port (J2) The main output port, J2, routes forward outgoing signal to the main cable. (This port also routes incoming return signal to the amplifier.) Distribution Equalizer (factory-installed) The series distribution equalizer provides additional slope to both secondary outputs. The interstage and distribution equalizers are factory-installed to set the tilt of the secondary output signals according to the customer order. A jumper, or zero equalizer, may be shipped in the distribution equalizer position for circuit continuity if no additional slope is needed. Normally you will not change this plug-in. However, if you need to change the tilt of the amplifier s outputs from the factory-set value, see the procedure under Interstage & Distribution Equalizers on page 98. Diamond Line 1 Amplifier 17

Doc. 2244001, Rev. D A secondary output test point allows allows you to inject return test signals. Return RF Signal Flow Secondary Paths (after they split from each other) The path to J3 and the path to J4 are identical. The following descriptions apply to either path. Secondary Output Attenuator This attenuator reduces signal levels at the secondary output port (J3 or J4). A zero attenuator or jumper is shipped in this slot for circuit continuity. Secondary Output Post-Amplifier A post-amplifier further amplifies signals, determining gain and distortion at the secondary port (J3 or J4). Secondary Output Diplex Filter See Input Diplex Filter on page 16. Secondary Output Test Point A secondary output test point is a -20 db directional coupler, which isolates the measured forward signal from the effects of reflections in the cable. Accessible through a cut-out in the module cover, this test point lets you verify the forward signals at the secondary output port (J3 or J4) without interrupting the amplifier s operation. Secondary Output Port (J3 or J4) A secondary output port routes forward outgoing signal to distribution cables. (This port also routes incoming return signal to the amplifier.) Before the Return Legs Combine Return Input Port (J2, J3, or J4) A return input port routes incoming return signal to the amplifier. (This port also routes forward outgoing signal to distribution cables.) Return Test Signal Injection Point (Output Test Point) Since the forward output test point allows access to the return band, you can inject return test signals here (although you can t measure return signal). Return Input Diplex Filter See Input Diplex Filter on page 16. Return Input Attenuator This plug-in attenuator is used primarily for ingress isolation. (See page 109.) A zero attenuator or jumper is shipped in this slot for circuit continuity. 18 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Return Input Test Point Accessible through a cut-out in the module cover, this -20 db resistive test point lets you verify the return signals at the return hybrid input. It is approximately -15dB from the test point s position in the circuit. Return Combiner Return signals from J2, J3, and J4 are combined into a single feed for the return amplifier. This three-way combiner has equal (5 db) loss in each leg. After the Return Legs Combine Return Amplifier This hybrid, which amplifies the return signal, features an improved compression point and BER for digital-loaded traffic over a discrete amplifier design. Return Output Equalizer Accessible through a cut-out in the module cover, this equalizer provides an output tilt at the return amplifier that will provide a flat input at the next return amplifier. Amplifiers are shipped with the return output equalizer position empty. Select and install the appropriate value based on network design. A return EDB plug-in may be installed instead of the equalizer to flatten circuitry response anomalies. Return Output Attenuator This attenuator reduces signal levels at the return output port (J1). Amplifiers are shipped with a zero return output attenuator or jumper. You may need to select and install the appropriate value based on network design. Return Output Test Point This -20 db directional coupler test point is used to measure the combined return signal as it will be sent to the return output port, J1. (Note that the test point at J1 is for forward input only; combined return signal cannot be measured at that point.) Return Output Diplex Filter See Input Diplex Filter on page 16. Return Output Port (J1) The return output port routes outgoing return signal via the cable system to the next return amplifier or the optical station. (This port also routes incoming forward signal to the amplifier.) Amp Diamond Line 1 Amplifier 19

Doc. 2244001, Rev. D Powering AC power may enter the housing at any of the RF ports. AC and RF separation is fixed. An AC bypass path provides high impedance to RF signals. The amplifier s 3-ampere power supply converts incoming AC power it into DC power. For details on the power-director fuses, see Figure 30 on page 75. 20 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Controls and Connectors ALSC On/Off Switch EMS & Power Connector Location for EMS Current Sensor EMS Module RF Input Connector ALSC Gain Control Input Test Point, TP1 Output Test Point, TP2 Fuses: F1 F3 Fuses: F2 F4 Amp Return Output Test Point +24 VDC Test Point Output Test Point, TP3 Output Test Point, TP4 Location for Port 3 RF Sensor (DD-EMS Kit) Return Input Test Points (for ports 2, 3, & 4) Location for Port 4 RF Sensor (DD-EMS Kit) Secondary Output/ Return Input Jack, J3 Secondary Output/Return Jack, J4 Forward Input/ Return Output Jack, J1 Main Output/ Return Input Jack, J2 Figure 6. Diamond Line 1 Controls & Connectors See definitions in Table 1, Diamond Line 1 Control and Connection Points. For plug-in locations, see page 23. Diamond Line 1 Amplifier 21

Doc. 2244001, Rev. D Table 1: Diamond Line 1 Control and Connection Points Designation Forward Input/ Return Output J1 Description G-type female connector. a Main Output/Return Input J2 G-type female connector. a Secondary Output/Return G-type female connectors. a Route forward output to distribution cables and return input to the Input J3 & J4 amplifier. Input Test Point TP1 Output Test Points: TP2, TP3, TP4 Return Input Test Points (for ports 2, 3, & 4) -20 db directional coupler test point. Used to measure the forward input signal at J1. Return output signal cannot be measured here. -20 db directional coupler test points. Used to measure the forward output signals at J2, J3, and J4, respectively. Directional couplers isolate the measured forward output from the effects of reflections in the cable. Return output signal cannot be measured, but you can inject return test signals. -20 db resistive test points. Used to measure the return signals before combining. Diamond Line 1 amplifiers, which combine return signals from multiple legs, use resistive return input test points to minimize noise. Return Output Test Point -20 db directional coupler test point. Used to measure the combined return signal as it will be sent to J1. +24 VDC Test Point Used to check the DC voltage. Fuses: F1, F2, F3, F4 ALSC On/Off Switch ALSC Gain Control EMS & Power Connector EMS Current Sensor Location Secondary Port RF Sensor (DD-EMS Kit) EMS Module RF Input Connector 25-amp power directors for ports J1, J2, J3, and J4, respectively. Switch (on ALSC circuit board). Turns automatic level and slope control on (automatic mode) or off (manual mode). Potentiometer located on ALSC circuit board. Controls the gain set point in automatic mode (ALSC on). Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). Used with element management system to monitor the current draw in the amplifier module. These locations are used for element management. Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). a. AC can be received through any of the four ports (J1, J2, J3, or J4) to a 3-amp power supply. 22 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Plug-In Circuits Amp Figure 7. Diamond Line 1 Plug-In Locations User-changeable plug-in circuits, accessible through cut-outs in the amplifier cover, ease customizing. Other information about these plug-ins Page Which plug-ins are factory-installed, which required, which optional 24 How signal flows through the plug-ins & how they act on the signal 15 Diamond Line 1 Amplifier 23

Doc. 2244001, Rev. D Factory-Installed Plug-Ins Circuits or jumpers are installed in these positions for optimum performance according to customer or product requirements. (Factory-installed plug-ins are shown in plug-in diagrams only if users may change them.) Automatic Level and Slope Control, ALSC (under cover, not user-changeable) 6-ALSC Interstage Slope Equalizer 7-2E-WC Required Plug-Ins These positions are shipped empty. Select and install the appropriate value based on network design. Input Attenuator 9-A-WC Input Equalizer 7-2E-WC Return Output Equalizer 7-REF-WC Return Output Attenuator 9-A-WC Optional Plug-Ins Replace jumpers or zero value circuits shipped in these positions based on system design and performance. Interstage Attenuator Jumper or 9-A-WC Response Equalizer (debumper) EDB Distribution (Secondary) Slope Equalizer 7-2E-WC Secondary Output Attenuators 9-A-WC Secondary Output Selector Diamond Line 1 Diamond Line 2 If using only one secondary output If using both secondary outputs Return Input Attenuators (three locations) Jumper or 9-A0 7-DC-862 Jumper or 9-A-WC 24 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Specifications Diamond Line 1 Network Amplifier 6-T3A398/31-42/54-***-125 (12.5 db Main Output Tilt, 31 db Gain) Units Bandwidth Forward 54 to 870 MHz Return 5 to 42 MHz Response Flatness (forward and return) Trunk (port J2) ± 0.5 db Distribution (ports J3 & J4) ± 0.75 db Return Loss (75 ohms, all ports) 5 to 42 MHz 16 db 54 to 870 MHz 16 db Test Points (forward and return) 20 ± 0.5 db Forward Spectrum Minimum Operating Gain (includes losses from ALSC and 1 db loss from input EQ) @ 870 MHz, trunk (port J2) 31 db @ 870 MHz, distribution (ports J3 & J4 40 db Referenced Output Levels (@ 870 / 750 / 650 / 550 / 54 MHz) Distribution Levels 48 / 46.2/ 44.6 / 43.1 / 35.5 dbmv Trunk Levels 38 / 36.5 / 35 / 33.5 / 25.5 dbmv Channel Loading (analog, NTSC) a, b 112 94 79 Channels Composite Triple Beat, typical (trunk / distribution) 73/ 61 75/ 64 80/ 70 dbc Cross Modulation, typical (trunk / distribution) 73/ 60 75/ 63 78/ 65 dbc Composite Second Order, typical Vc + 0.75 & 1.25 MHz only (trunk / distribution) 75/ 66 78/ 71 80/ 73 dbc Noise Figure (For system calculations, subtract 1 db loss for EQ.) 7.5 db Return Spectrum Minimum Operating Gain @ 40 MHz (add 1 db loss for EQ) 17 db Referenced Output @ +25 degrees C a 6 ch + 35 dbmv flat out Composite Triple Beat 86 dbc Cross Modulation 78 dbc Composite Second Order 85 dbc Noise Figure 8 db Hum Modulation @ 15 Amps 5 to 42 MHz 65 dbc 54 to 750 MHz 65 dbc 751 to 870 MHz 55 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case, @ 2.045 ADC) 56 W Operating Ambient Temperature 40 to +60 degrees C 40 to +140 degrees F Dimensions (length x width x height) 32.5 x 14.2 x 9.1 cm 12.8 x 5.6 x 3.6 in. Weight 2.0 kg 4.55 lb Specifications are typical at 25 degrees C and are subject to change without notice. a. Distortion specifications are typical for individual module performance. b. For station performance of secondary outputs, add main (trunk) distortions to secondary (distribution) distortions. Amp Diamond Line 1 Amplifier 25

Doc. 2244001, Rev. D Relative Chroma Delay Table 2: Relative Chroma Delay: 42/54 Split (NTSC System M) Diamond Line Amplifier (42/54 split) Frequency Relative Chroma Delay Units Forward 55.25-58.83 MHz -30 ns 61.25-64.83 MHz -15 ns 67.25-70.83 MHz -7 ns Unstated Channels (maximum) <2 ns Return 7.00-10.58 MHz -14 ns 13.00-16.58 MHz -2 ns 19.00-22.58 MHz -3 ns 25.00-28.58 MHz -9 ns 31.00-34.58 MHz 16 ns 37.00-40.58 MHz 61 ns Table 3: Relative Chroma Delay: 65/85 Split (NTSC System M) Diamond Line Amplifier (65/85 split) Frequency Relative Chroma Delay Units Forward 77.25-80.83 MHz -6 ns 83.25-86.83 MHz -4 ns Unstated Channels (maximum) <2 ns Return 7.00-10.58 MHz -9.5 ns 13.00-16.58 MHz -1 ns 31.00-34.58 MHz 1 ns 37.00-40.58 MHz 1.5 ns 26 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Relative Group Delay: Return Signals To determine the relative group delay between two frequencies, look at the difference (in nanoseconds) of the actual group delay for each frequency. Amp Figure 8. Relative Group Delay (Return), 42/54 Split Figure 9. Relative Group Delays (Return), 65/85 Split Diamond Line 1 Amplifier 27

Doc. 2244001, Rev. D Automatic Level & Slope Control (ALSC) 6-ALSC Bode Controller Units Operating Temperature (external ambient) 40 to +60 40 to +140 C F Supply Voltage 24.0 ± 0.5 V Supply Current (maximum, controller only) 74 ma Pilot Carrier Frequencies 427.25, 495.25, 499.25 MHz Pilot Level Adjustment Range (at controller input) 30 to 50 dbmv Level Stability (at pilot and controller out) Thermal (maximum, reference 25 C, or 77 F) ± 1.0 db Recovery Accuracy (maximum, within 10 seconds, 2 db steps) ± 0.5 db Modulation Loss (white to CW) 0.5 db Picture Content (NTSC bounce) ± 0.1 db Sensitivity to Adjacent Channel (± 6 MHz, equal RF levels) ± 0.1 db Effect on Response Flatness (45 to 870 MHz) ± 0.25 db Specifications are subject to change without notice. 28 Diamond Line 1 Amplifier

Doc. 2244001, Rev. D Diamond Line 2 Amplifier Contents Equipment Description... 30 Module Label... 31 Model Numbers (module only)... 32 Configuration Model Number... 33 Functional Description... 34 Forward RF Signal Flow... 34 Return RF Signal Flow... 37 Amplifier Powering... 39 Controls and Connectors... 40 Plug-In Circuits... 42 Specifications... 44 Diamond Line 2 Network Amplifier (Silicon Hybrids)... 44 Diamond Line 2 Network Amplifier (HO GaAs Hybrids)... 45 Relative Chroma Delay (NTSC System M)... 46 Relative Group Delay... 46 Automatic Level & Slope Control (ALSC)... 47 Amp Figures Figure 10. Diamond Line 2 Amplifier, Front View... 30 Figure 11. Diamond Line 2 Model Numbers... 32 Figure 12. Diamond Line 2 Configuration Numbers... 33 Figure 13. Diamond Line 2 Functional Block Diagram... 34 Figure 14. Diamond Line 2 Controls & Connectors... 40 Figure 15. Diamond Line 2 User-Changeable Plug-Ins... 42 Figure 16. Relative Group Delay, 42/54 bandsplit... 46 Diamond Line 2 Amplifier 29

Doc. 2244001, Rev. D Equipment Description Module Label Figure 10. Diamond Line 2 Amplifier, Front View The Diamond Line 2 amplifier is a distribution amplifier, similar in function to GNA series global network amplifiers. Diamond Line 2 amplifiers offer two equal or three unequal high-level RF distribution outputs. They use two post-amplifier hybrids, one for the main output and one for the secondary outputs. A plug-in output port selector allows you to use one or both secondary outputs by using a plug-in jumper or directional coupler. 30 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Module Label Each amplifier s module label provides configuration information for the amplifier as it was shipped. Use this key to read the label. _ - A _ 9 8 / _ / _ _ Upgrade Compatibility 6-T3A = TNA (Diamond Line 1, Silicon Hybrids) 6-G3A = GNA (Diamond Line 2, Silicon Hybrids) 8-G4A = GNA (Diamond Line 2, HO GaAs Hybrids) Number of Output Hybrids 3 = Diamond Line 1 2 = Diamond Line 2 Amp Highest Forward Frequency 8 = 870 MHz Station Main Output Operating Gain in db (31 or 40 db depending on model; figures include ALSC-related loss and 1 db loss in input equalizer) Bandsplit 42 / 54 MHz 65 / 85 MHz (6-T3A version) ALSC Pilot Frequency 423 = 423.25 MHz 426 = 426.25 MHz 427 = 427.25 MHz 433 = 433.25 MHz 495 = 495.25 MHz 499 = 499.25 MHz Station Main Output Tilt (at highest frequency) 080 = 8.0 db 100 = 10.0 db 110 = 11.0 db 125 = 12.5 db 147 = 14.7 db Diamond Line 2 Amplifier 31

Doc. 2244001, Rev. D Model Numbers (module only) Note that model numbers will not match the module label if an ALSC has been changed. _ G3A29_ / 42/54 4 _ 6 = Silicon Hybrids 8 = GaAs Hybrids Station Output Tilt (over the forward bandwidth) Diamond Line 2 125 = 12.5 db 2 Output Hybrids Series 9 (1 GHz platform) ALSC Pilot Frequency for example 427 = 427.25 MHz 499 = 499.25 MHz Highest Forward Frequency 7 = 750 MHz 8 = 870 MHz Station Gain = 37 db or 40 db (incl. losses from ALSC and 1 db loss from input equalizer) 42/54 Bandsplit (diplex filter) 5 42 MHz, return 54 MHz and up, forward Figure 11. Diamond Line 2 Model Numbers The Diamond Line 2 amplifier modules vary in highest forward frequency, ALSC pilot frequency, and station output tilt. Diamond Line 2 amplifier models vary in three ways: highest forward frequency, automatic level and slope control (ALSC) pilot frequency, and station output tilt. For example, model 6-G3A298/37 42/54 427 125 (variable elements underlined) specifies the following: a highest forward frequency of 870 MHz, a 427.25 MHz ALSC pilot frequency, and 12.5 db station output tilt over the forward bandwidth. 32 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Configuration Model Number The configuration model number (module + housing) appears on the shipping carton only. G3A _ 2 _ D C_ L _ 9 _C1 Diamond Line 2 Amplifiers 6 = Silicon Hybrids 8 = GaAs Hybrids 2 Output Hybrids Element- Management (EMS) Capable Surge Protection 90V Crowbar Amp Highest Forward Frequency 7 = 750 MHz 8 = 870 MHz 42/54 Bandsplit Station Output Tilt (at highest frequency) 2 = 12.5 db 3 = 11.0 db 4 = 10.0 db 5 = 14.7 db Station Gain = 37 db or 40 db (incl. losses from ALSC and 1 db loss from input equalizer) Powering 90 VAC, 3A power supply Housing A = None B = 9-NHD-15/I/PED K = 9-NH15 L = 9-NH15/CA M = 9-NH15/I R = 9-NH15/I/PED/CA V = 9-NHD-15 Plug-In Return Amp Hybrid ALSC Pilot Frequency LD = 423.25 MHz LE =426.25 MHz LF = 427.25 MHz LG = 433.25 MHz LJ = 499.25 MHz Figure 12. Diamond Line 2 Configuration Numbers A configuration combines a particular amplifier module with a particular housing. Configuration numbers tell which amplifier module is installed in which housing. For example, configuration G3A628D37-CVLG94C1 (variable elements underlined) specifies the following: a Diamond Line 2 amplifier module like the example given on page 32 (highest forward frequency of 870 MHz, ALSC pilot frequency of 433.25 MHz, and 10 db station output tilt at highest frequency) and a 9-NHD-15 housing (9-NH15 series housing with deep lid, as required for element management). For more on 9-NH housing model numbers, see page 51. Diamond Line 2 Amplifier 33

Doc. 2244001, Rev. D Functional Description Figure 13. Diamond Line 2 Functional Block Diagram The Diamond Line 2 amplifier can have two equal, or three unequal, high-level RF distribution outputs. It uses two post-amplifier hybrids, one for the main output and one for the two secondary outputs. A plug-in output port selector lets you use one or both secondary outputs by using a plug-in jumper or directional coupler. For details on forward RF signal flow, see page 34. For details on return RF signal flow, see page 37. For a description of amplifier powering, see page 39. Forward RF Signal Flow Forward RF signals enter the Diamond Line 2 amplifier module through the input port, J1, and are amplified by the pre-amplifier. The main output signals are amplified twice more before exiting through the main output port, J2. The secondary-output signals are also amplified twice more before exiting through the two distribution (secondary) output ports, J3 and/or J4. The return RF signal flow is the same for all three return legs, from ports J2, J3, and/or J4 to port J1. Before Main & Secondary Paths Split Input Port (J1) The input port, J1, routes forward incoming signal to the amplifier. (This port also routes outgoing return signal to the main cable.) Input Test Point The input test point is a -20 db directional coupler. Accessible through a cut-out in the module cover, this test point lets you verify the forward signals at the forward input port (J1) 34 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D without interrupting the amplifier s operation. (Return signal cannot be measured here.) Input Diplex Filter A diplex filter consists of a pair of filters, a high-pass and a low-pass, isolating forward and return bands. The high-pass filter passes forward signals but blocks return signals and AC. The low-pass filter passes return signals but blocks forward signals. Input Attenuator This plug-in attenuator reduces RF levels at the pre-amp input to meet design specifications. Amplifiers are shipped with the input attenuator position empty. Select and install the appropriate value based on network design. Input Equalizer This plug-in equalizer compensates for the effects of cable preceding the amplifier module. Amplifiers are shipped with the input equalizer position empty. Select and install the appropriate value based on network design. Pre-Amplifier This pre-amplifier sets the amplifier s noise figure. Interstage Attenuator The interstage attenuator reduces overall amplifier gain. A zero attenuator or jumper is shipped in this slot for circuit continuity. ALSC Bode Equalizer (factory-installed) The ALSC Bode equalizer works with the ALSC Bode controller to maintain a constant RF output level, compensating for the effects of temperature on cable. Response Equalizer An EDB series response equalizer (debumper) flattens the forward response of cascaded amplifiers, compensating for system signature imperfections. A jumper is shipped in this slot for circuit continuity. Interstage Equalizer (factory-installed) The interstage equalizer is factory-installed to optimize the distortion characteristic of the amplifier and provide the desired main output slope at the specified bandwidth. Normally you will not change this plug-in. However, if you need to change the tilt of the amplifier s outputs from the factory-set value, see the procedure under Interstage & Distribution Equalizers on page 98. Amp Diamond Line 2 Amplifier 35

Doc. 2244001, Rev. D Interstage Amplifier The RF from this hybrid goes to the two post-amplifiers. ALSC Bode Controller (factory-installed) The automatic level and slope control (ALSC) Bode controller works with the ALSC Bode equalizer to maintain a constant RF output level, compensating for the effects of outside temperature changes on cable. A directional coupler taps a small portion of the main output power and converts it to a DC signal that controls the Bode equalizer. Distribution Equalizer (factory-installed) The distribution equalizer provides additional slope to all outputs. The interstage and distribution equalizers are factory-installed to set the tilt of the output signals according to the customer order. A zero equalizer may be shipped in the distribution equalizer position for circuit continuity if no additional slope is needed. Normally you will not change this plug-in. However, if you need to change the tilt of the amplifier s outputs from the factory-set value, see the procedure under Interstage & Distribution Equalizers on page 98. The main output test point allows you to inject return test signals. Main Path (after it splits from secondary path) Main Output Attenuator Accessible through a cut-out in the module cover, this attenuator reduces signal levels at the main output. A zero attenuator or jumper is shipped in this slot for circuit continuity. Main Output Post-Amplifier The RF from this hybrid goes to the main output port, J2. Main Output Diplex Filter See Input Diplex Filter on page 35. Main Output Test Point The main output test point is a -20 db directional coupler, which isolates the measured forward signal from the effects of reflections in the cable. Accessible through a cut-out in the module cover, this test point lets you verify the forward signals at the main output port (J2) without interrupting the amplifier s operation. Main Output Port (J2) The main output port, J2, routes forward outgoing signal to a distribution cable. (This port also routes incoming return signal to the amplifier.) 36 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D A secondary output test point allows you to inject return test signals. Secondary Path (after it splits from main path) Secondary Output Attenuator This attenuator reduces signal levels at the secondary output port (J3 or J4). A zero attenuator or jumper is shipped in this slot for circuit continuity. Secondary Output Post-Amplifier The RF from this hybrid goes to the secondary output port(s). Secondary Output Port Selector Accessible through a cut-out in the module cover, the output port selector directs signal to the secondary output port(s): J3 only, J4 only, or both J3 and J4. A jumper, or zero attenuator, is used when directing signal to only one port. When using both ports, this location accepts a directional coupler plug-in. Secondary Output Diplex Filter See Input Diplex Filter on page 35. Secondary Output Test Point A secondary output test point is a -20 db directional coupler, which isolates the measured forward signal from the effects of reflections in the cable. Accessible through a cut-out in the module cover, this test point lets you verify the forward signals at the secondary output port (J3 or J4) without interrupting the amplifier s operation. Secondary Output Port (J3 or J4) A secondary output port routes forward outgoing signal to a distribution cable. (This port also routes incoming return signal to the amplifier.) Amp Return RF Signal Flow Before the Return Legs Combine Return Input Port (J2, J3, or J4) A return input port routes incoming return signal to the amplifier. (This port also routes forward outgoing signal to distribution cables.) Return Test Signal Injection Point (Output Test Point) Since the forward output test point allows access to the return band, you can inject return test signals here (although you can t measure return signal). Return Input Diplex Filter See Input Diplex Filter on page 35. Diamond Line 2 Amplifier 37

Doc. 2244001, Rev. D Return Input Attenuator The return input attenuator is used in this position primarily for ingress isolation. (See page 109.) A zero attenuator or jumper is shipped in this slot for circuit continuity. Return Input Test Point Accessible through a cut-out in the module cover, this -20 db resistive test point lets you verify the return signals at the return hybrid input. It is approximately -15dB from the test point s position in the circuit. Return Combiner Return signals from J2, J3, and J4 are combined into a single feed for the return amplifier. This three-way combiner has equal (5 db) loss in each leg. After the Return Legs Combine Return Amplifier This hybrid, which amplifies the combined return signal, features an improved compression point and bit error rate (BER) for digital-loaded traffic over a discrete amplifier design. Return Output Equalizer Accessible through a cut-out in the module cover, this equalizer provides an output tilt at the return amplifier that will provide a flat input at the next return amplifier. Amplifiers are shipped with the return output equalizer position empty. Select and install the appropriate value based on network design. A return EDB plug-in may be installed instead of the equalizer to flatten circuitry response anomalies. Return Output Attenuator This attenuator reduces signal levels at the return output port (J1). Amplifiers are shipped with a zero return output attenuator or jumper. You may need to select and install the appropriate value based on network design. Return Output Test Point This -20 db directional coupler test point is used to measure the combined return signal as it will be sent to the return output port, J1. (Note that the test point at J1 is for forward input only; combined return signal cannot be measured at that point.) Return Output Diplex Filter See Input Diplex Filter on page 35. 38 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Return Output Port (J1) The return output port routes outgoing return signal via the cable system back to the previous amplifier. (This port also routes incoming forward signal to the amplifier.) Amplifier Powering AC power may enter the housing at any of the RF ports. AC and RF separation is fixed. An AC bypass path provides high impedance to RF signals. The amplifier s 3-ampere power supply receives the incoming AC power and converts it into DC power. For details on the power-director fuses, see Figure 30. Amp Diamond Line 2 Amplifier 39

Doc. 2244001, Rev. D Controls and Connectors ALSC On/Off Switch EMS & Power Connector Location for EMS Current Sensor EMS Module RF Input Connector ALSC Gain Control Input Test Point, TP1 Fuses: F1 F3 Output Test Point, TP2 Fuses: F2 F4 Return Output PORT 2 +24 VDC Test Point Output Test Point, TP3 Output Test Point, TP4 Location for Port 3 RF Sensor (DD-EMS Kit) Return Input Test Points (for ports 2, 3, & 4) Location for Port 4 RF Sensor (DD-EMS Kit) Secondary Output/ Return Input Jack, J3 Secondary Output/ Return Input Jack, J4 Forward Input/ Return Output Jack, J1 Main Output/ Return Input Jack, J2 Figure 14. Diamond Line 2 Controls & Connectors See definitions in Table 4, Diamond Line 2 Control and Connection Points. For plug-in locations, see page 42. 40 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Table 4: Diamond Line 2 Control and Connection Points Designation Forward Input/ Return Output Jack, J1 Main Output/ Return Input Jack, J2 Description G-type female connector. a G-type female connector. a Secondary Output/Return Input Jacks, J3 & J4 Input Test Point, TP1 Output Test Points: TP2, TP3, TP4 Return Input Test Points (for ports 2, 3, & 4) G-type female connectors. a Route forward output to distribution cables and return input to the amplifier. -20 db directional coupler test point. Used to measure the forward input signal at J1. Return output signal cannot be measured here. -20 db directional coupler test points. Used to measure the forward output signals at J2, J3, and J4, respectively. Directional coupler test points isolate the measured forward output signal from the effects of reflections in the cable. Return output signal cannot be measured, but you can inject return test signals. -20 db resistive test points. Used to measure return signals before combining. Diamond Line 2 amplifiers, which combine return signals from multiple legs, use resistive return input test points to minimize noise. Return Output Test Point -20 db directional coupler test point. Used to measure the combined return signal as it will be sent to J1. +24 VDC Test Point Used to check the DC voltage. Fuses: F1, F2, F3, F4 ALSC On/Off Switch ALSC Gain Control EMS & Power Connector Location for EMS Current Sensor Secondary Port RF Sensors (DD-EMS Kit) EMS Module RF Input Connector 25-amp fuses. Direct AC power to ports J1, J2, J3, and J4, respectively. Switch (on ALSC circuit board). Turns automatic level and slope control on (automatic mode) or off (manual mode). Potentiometer located on ALSC circuit board. Controls the gain set point in automatic mode (ALSC on). Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). Used with element management system to monitor the current draw in the amplifier module. These locations are used for element management. Used to connect amplifier module to element-management equipment in lid of housing (deep-lid model required). Amp a. AC can be received through any of the four ports (J1, J2, J3, or J4) to a 3-amp power supply. Diamond Line 2 Amplifier 41

Doc. 2244001, Rev. D Plug-In Circuits 9-A-WC Input Attenuator 7-2E-WC Input Equalizer EDB Response Equalizer (debumper) 7-2E-WC Interstage Slope Equalizer Jumper or 9-A-WC Return Input Attenuators Jumper or 9-A-WC Interstage Attenuator CURRENT SENSOR PORT 2 Jumper or 9-A-WC Return Output Attenuator Jumper, 9-A0, or 7-DC-862 Secondary Output Port Selector 7-REF-WC Return Output Equalizer or EDB Response Equalizer Jumper or 9-A-WC Secondary Output Attenuator Jumper or 9-A-WC Main Output Attenuator 7-2E-WC Secondary Slope Equalizer Figure 15. Diamond Line 2 User-Changeable Plug-Ins User-changeable plug-in circuits, accessible through the amplifier cover, let you customize the Diamond Line 2 amplifier. Other information about these plug-ins Page Which plug-ins are factory-installed, which required, which optional 43 How signal flows through the plug-ins & how they act on the signal 34 42 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Factory-Installed Plug-Ins Circuits or jumpers are installed in these positions for optimum performance according to customer or product requirements. (Factory-installed plug-ins are shown in plug-in diagrams only if users may change them.) Automatic Level and Slope Control, ALSC (under cover, not user-changeable) 6-ALSC Interstage Slope Equalizer 7-2E-WC Required Plug-Ins These positions are shipped empty. Select and install the appropriate value based on network design. Input Attenuator 9-A-WC Input Equalizer 7-2E-WC Return Output Equalizer 7-REF-WC Return Output Attenuator Jumper or 9-A-WC Optional Plug-Ins Replace jumpers or zero value circuits shipped in these positions based on system design and performance. Interstage Attenuator Jumper or 9-A-WC Response Equalizer (debumper) EDB Distribution (Secondary) Slope Equalizer 7-2E-WC Secondary Output Attenuators Jumper or 9-A-WC Secondary Output Selector Diamond Line 1 Diamond Line 2 If using only one secondary output If using both secondary outputs Return Input Attenuators (three locations) Jumper or 9-A0 7-DC-862 Jumper or 9-A-WC Amp Diamond Line 2 Amplifier 43

Doc. 2244001, Rev. D Specifications Diamond Line 2 Network Amplifier (Silicon Hybrids) 6-G3A298/40-42/54-***-125 Units Bandwidth Forward 54 to 870 MHz Return 5 to 42 MHz Response Flatness (all ports) 5 to 42 MHz / 54 to 600 MHz / 601 MHz to 870 MHz ± 0.5 / ± 0.5 / ± 0.75 db Return Loss (measured at operational gain & slope, 75 ohms, all ports, @ +25 C) 5 to 42 MHz / 54 to 200 MHz / 201 to 870 MHz 16 / 15 / 16 db Test Points (forward and return) 20 ± 0.5 db Forward Spectrum Minimum Operating Gain @ 870 MHz (includes ALSC and 1 db input EQ losses) 40 db Referenced Output Levels (@ 870 / 750 / 650 / 550 / 54 MHz) 48 / 46.2/ 44.6 / 43.1 / 35.5 dbmv Channel Loading (analog, NTSC) 112 94 79 Channels Composite Triple Beat 60 67 72 dbc Cross Modulation 61 63 69 dbc Composite Second Order (Vc+0.75 & 1.25 MHz only) 71 75 78 dbc Noise Figure (For system calculations, add 1 db for EQ loss.) 7.5 db Return Spectrum Minimum Operating Gain @ 40 MHz (add 1 db for EQ loss) 17 db Distortions at Referenced Output @ +25 C 6 ch + 35 dbmv flat out Composite Triple Beat 86 dbc Cross Modulation 76 dbc Composite Second Order 79 dbc Noise Figure 9 db Hum Modulation @ 15 Amps 5 to 42 MHz 65 dbc 54 to 750 MHz 65 dbc 751 to 870 MHz 55 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case, @ 1.727 ADC) 47 W Operating Ambient Temperature 40 to +60 40 to +140 C F Dimensions (length x width x height) 32.5 x 14.2 x 9.1 12.8 x 5.6 x 3.6 cm in. Weight 2.0 4.55 kg lb. Specifications are typical at 25 C and are subject to change without notice. 44 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Diamond Line 2 Network Amplifier (HO GaAs Hybrids) 8-G4A298/40-42/54-***-125 (with ALSC, 40 db operational gain) Units Bandwidth Forward 54 to 870 MHz Return 5 to 42 MHz Response Flatness (all ports) 5 to 42 MHz / 54 to 600 MHz / 601 MHz to 870 MHz ± 0.5 / ± 0.5 / ± 0.75 db Return Loss (measured at operational gain & slope, 75 ohms, all ports, @ +25 C) 5 to 42 MHz / 54 to 200 MHz / 201 to 870 MHz 16 / 15 / 16 db Test Points (forward and return) 20 ± 0.5 db Response Flatness (all ports) Forward Spectrum Minimum Operating Gain @ 870 MHz (25 C± 0.5 C, includes ALSC and 1 db input EQ losses) 40 db Referenced Output Levels (@ 870 / 750 / 650 / 550 / 54 MHz) 52.0 / 50.2 / 48.6 / 47.1 / 39.5 dbmv Channel Loading (analog, NTSC) 112 94 79 Channels Composite Triple Beat 62 67 72 dbc Cross Modulation 60 64 70 dbc Composite Second Order (Vc+0.75 & 1.25 MHz only) 70 72 76 dbc Carrier to Intermodulation Noise a 61 dbc Noise Figure (For system calculations, add 1 db for EQ loss.) 7.5 db Return Spectrum Minimum Operating Gain @ 40 MHz (add 1 db for EQ loss) 17 db Distortions at Referenced Output @ +25 C 6 ch + 35 dbmv flat out Composite Triple Beat 86 dbc Cross Modulation 76 dbc Composite Second Order 79 dbc Noise Figure 9 db Hum Modulation 5 to 42 MHz 65 dbc 54 to 750 MHz 65 dbc 751 to 870 MHz 55 dbc AC Bypass Current (continuous) 15 A AC Power Consumption (worst case, @ 1.727 ADC) 47 W Operating Ambient Temperature 40 to +60 40 to +140 Dimensions (length x width x height) 32.5 x 14.2 x 9.1 12.8 x 5.6 x 3.6 Weight 2.0 4.55 Specifications are typical at 25 Cand are subject to change without notice. C F cm in. kg lb. Amp a. 79 channels + 300 MHz at 6 db down Diamond Line 2 Amplifier 45

Doc. 2244001, Rev. D Relative Chroma Delay (NTSC System M) Diamond Line Amplifier 42/54 split Units Forward 55.25 to 58.83 MHz 25 ns 61.25 to 64.83 MHz 10 ns 67.25 to 70.83 MHz 6 ns Unstated Channels (maximum) < 2 ns Return 7.00 to 10.58 MHz 26 ns 13.00 to 16.58 MHz 3 ns 19.00 to 22.58 MHz 2.5 ns 25.00 to 28.58 MHz 10.5 ns 31.00 to 34.58 MHz 17 ns 37.00 to 40.58 MHz 70 ns Specifications are subject to change without notice. Relative Group Delay Return Signal Characteristics: 42/54 bandsplit To determine the relative group delay between two frequencies, find the difference (in nanoseconds) of the actual group delay for each frequency. Figure 16. Relative Group Delay, 42/54 bandsplit 46 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D Automatic Level & Slope Control (ALSC) 6-ALSC Bode Controller Units Operating Temperature (external ambient) 40 to +60 40 to +140 C F Supply Voltage 24.0 ± 0.5 V Supply Current (maximum, controller only) 74 ma Pilot Carrier Frequencies 427.25, 495.25, 499.25 MHz Pilot Level Adjustment Range (at controller input) 30 to 50 dbmv Level Stability (at pilot and controller out) Thermal (maximum, reference 25 C, or 77 F) ± 1.0 db Recovery Accuracy (maximum, within 10 seconds, 2 db steps) ± 0.5 db Modulation Loss (white to CW) 0.5 db Picture Content (NTSC bounce) ± 0.1 db Sensitivity to Adjacent Channel (± 6 MHz, equal RF levels) ± 0.1 db Effect on Response Flatness (45 to 870 MHz) ± 0.25 db Specifications are subject to change without notice. Amp Diamond Line 2 Amplifier 47

Doc. 2244001, Rev. D 48 Diamond Line 2 Amplifier

Doc. 2244001, Rev. D 9-NH Series Amplifier Housing Contents Equipment Description... 50 Model Numbers... 51 Functional Description... 51 Ports and Points of Connection... 52 Housing Label... 56 Specifications... 57 9-NH15 Series Housing... 57 Amp Figures Figure 17. 9-NH Housing, Closed View... 50 Figure 18. 9-NH Housing, RFI and Weather Gaskets... 50 Figure 19. 9-NH Housing, Ports & Points of Connection... 52 Figure 20. 9-NHD Housing, Ports & Points of Connection... 54 Figure 21. 9-NH and 9-NHD Housing, Labels... 56 9-NH Series Amplifier Housing 49

PILOT MADE IN U.S.A. HOUSING PAT PEND. Doc. 2244001, Rev. D Equipment Description Figure 17. 9-NH Housing, Closed View The 9-NH series housing holds any 6-GNA, 6-TNA, or Diamond Line series amplifier. The 9-NH housing may be mounted on a strand, in a pedestal, in a cabinet, on a wall. The 9-NH housing has one input port, one main output port, and, on most models, two secondary output ports. These cast-in extended ports use 1 GHz seizure mechanisms for pin-type connectors. Some models provide access through the lid to the amplifier s RF test points. Patented diagonal cooling fins promote heat dissipation in all mounting orientations. Models with a chromate-conversion finish offer protection in the harshest environments. RFI Gasket Weather Gasket SIGNAL LEVELS CHANNEL/FREQUENCY TP1 - INPUT LEVEL TP2 - OUTPUT LEVEL TP3 - OUTPUT LEVEL TP4 - OUTPUT LEVEL NETWORK AMPLIFIER SERVICE DATE MODEL ID NO. LOCATION PLUG-INS POWERING INPUT ATTN LPS NO. INPUT EQ DIRECT A/C POWER RESPONSE EQ YES NO INTERSTAGE EQ POWER DIRECTOR F1 DISTRIBUTION ATTN F2 DISTRIBUTION EQ OUTPUT SPLITTER VOLTS A/C F3 ALC YES NO VOLTS D/C F4 FORWARD RETURN Figure 18. 9-NH Housing, RFI and Weather Gaskets The 9-NH series housing s RFI gasket provides RF shielding, while a silicone rubber weather gasket helps protect the amplifier module from the environment. 50 9-NH Series Amplifier Housing