Harris 884PS Instruction Manual

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Page 1

Instrucon Manual

880 Series

Audio Distribuon Ampliers

Edion I

880 ADA MAN

Delivering the Moment

Page 2

Publicaon Informaon

Imagine Communicaons considers this document and its contents to be proprietary and condenal. Except for making a reasonable number of copies for your own internal use, you may not reproduce this publicaon, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the wrien consent of Imagine Communicaons. All others uses are illegal.

This publicaon is designed to assist in the use of the product as it exists on the date of publicaon of this manual, and may not reect the product at the current me or an unknown me in the future. This publicaon does not in any way warrant descripon accuracy or guarantee the use for the product to which it refers. Imagine Communicaons reserves the right, without noce to make such changes in equipment, design, specicaons, components, or documentaon as progress may warrant to improve the performance of the product.

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Page 3

880 Series

Audio Distribution Amplifiers

Instruction Manual

Edition I April 2006

Page 4

Page 5

Preface

Manual Information...............................................................................................ix

Unpacking/Shipping Information ........................................................................xii

Standards ............................................................................................................xiii

Chapter 1: 880 Series Mounting Frames

Overview ................................................................................................................ 1

Mounting Requirements ........................................................................................ 2

FR-883 ............................................................................................................ 2

FR-884 ............................................................................................................ 3

Frame Cooling .......................................................................................................4

Power Consumption ...............................................................................................4

884 PS Power Supply ............................................................................................ 5

Cable Harness Support Bracket ............................................................................. 6

Back Panel Pinout Assignments ............................................................................7

Back Panel Connections ........................................................................................8

Chapter 2: AMD-880 Mono Audio Distribution Amplifier

Module

Overview ................................................................................................................ 9

Chapter 3: APD-880 Programmable Audio Distribution

Amplifier Module

Overview .............................................................................................................. 11

Configuring an APD-880-0 .................................................................................12

Chapter 4: ARG-880 Audio Remote Gain Distribution

Amplifier Module

Overview .............................................................................................................. 13

Remote Control Information ............................................................................... 14

880 Series Audio Distribution Amplifiers Instruction Manual v

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Contents

Chapter 5: ASD-880 Stereo Audio Distribution Amplifier

Module

Overview .............................................................................................................. 15

Chapter 6: ATG-880 Audio Tone

Generator Module

Overview .............................................................................................................. 17

Control Loop .......................................................................................................18

Output Stage .........................................................................................................18

Chapter 7: 884PS Power Supply Module

Overview .............................................................................................................. 19

Installing the 884PS-48 .......................................................................................20

Precautions ...................................................................................................20

Branch Circuit Schematic ............................................................................. 21

Suggested Protection Devices ......................................................................21

Maintaining the 884PS-48 ...................................................................................22

Power Supply Replacement Fuse Information .............................................22

Power Supply Connections ..........................................................................22

Specifications ...............................................................................................22

Chapter 8: Specifications

Overview .............................................................................................................. 23

FR-883 / FR-884 Mounting Frames ..................................................................... 24

Electrical ....................................................................................................... 24

Mechanical ...................................................................................................24

AMD-880 Mono Audio Distribution Amplifier Module .................................... 25

Input ............................................................................................................. 25

Output ........................................................................................................... 25

Performance ................................................................................................. 25

AMD-880 Mono Audio Distribution Amplifier Module (600Ω Impedance) ..... 26

Input ............................................................................................................. 26

Output ........................................................................................................... 26

Performance ................................................................................................. 26

APD-880 Programmable Audio Distribution Amplifier Module ........................27

Input ............................................................................................................. 27

Output ........................................................................................................... 27

Performance ................................................................................................. 27

APD-880 Programmable Audio Distribution Amplifier Module (600Ω Impedance)

Input ............................................................................................................. 28

Output ........................................................................................................... 28

Performance ................................................................................................. 28

ARG-880 Audio Remote Gain Distribution Amplifier Module .......................... 29

Input ............................................................................................................. 29

Output ........................................................................................................... 29

Performance ................................................................................................. 29

ASD-880 Stereo Audio Distribution Amplifier Module ..................................... 30

Input ............................................................................................................. 30

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Output ........................................................................................................... 30

Performance ................................................................................................. 30

ASD-880 Stereo Audio Distribution Amplifier Module (600Ω Impedance) ...... 31

Input ............................................................................................................. 31

Output ........................................................................................................... 31

Performance ................................................................................................. 31

ATG-880 Audio Tone Generator Module ...........................................................32

Appendix A: Safety Precautions, Certifications, and

Compliances

Safety Terms and Symbols in this Manual ..........................................................34

Preventing Electrostatic Discharge ...................................................................... 35

EMC and Safety Standards .................................................................................. 38

EMC Standards ............................................................................................ 38

Additional EMC Information .......................................................................39

Safety Standards ...........................................................................................40

Index

Keywords ............................................................................................................. 41

Contents

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Contents

viii 880 Series Audio Distribution Amplifiers Instruction Manual

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Manual Information

Purpose

This manual details the features, installation, operation, maintenance, and specifications for the 880 series audio distribution amplifers.

Audience

This manual is written for technicians and operators responsible for installation, setup, maintenance, and/or operation of the product, and is useful to operations personnel for purposes of daily operation and reference.

Revision History

Table P-1. Manual Revision History

Edition Date Comments

Edition D March 2001

Preface

•Changed format

• Removed Theory of Operation and schematics

• Consolidated Specifications into one separate chapter

Edition E October 2001 Made changes to figure illustrating

FR-883/FR-884 back panel connections

Edition F November 2002 Added configuration information for

APD-880-0

Edition G August 2003 Added specifications for ASD-880-GR stereo

audio distribution amplifier module

Edition H June 2004 Made changes to figure illustrating FR-882-M

back panel connections

880 Series Audio Distribution Amplifiers Instruction Manual ix

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Preface

Applications

Table P-1. Manual Revision History (Continued)

Edition Date Comments

Edition I April 2006 Removed information on obsolete products:

• FR-881 and FR-882 mounting frames

• 882 power supply

• ADA-815 audio distribution amplifier

• ADA-880 audio distribution amplifier

• ADA-881 audio distribution amplifier

• ADA-882 stereo audio distribution amplifier

• ADA-883 stereo audio distribution amplifier

• ADA-885 mono / stereo audio distribution amplifier

• APD-880-3, -4, -5 programmable audio distribution amplifiers

The 880 series platform is ideal for space-constrained operations demanding full local and remote control capabilities in a routing solution.

880 series products are perfect for

• Television production facilities

• Cable operators

• Production and post-production facilities

• Outside broadcast vans/trucks

• DBS satellite operations

• Webcasters

Writing Conventions

To enhance your understanding, the authors of this manual have adhered to the following text conventions:

Table P-2. Writing Conventions

Term or Convention

Bold Indicates dialog boxes, property sheets, fields, buttons, check

Italics Indicates email addresses, the names of books or publications,

CAPS Indicates a specific key on the keyboard, such as ENTER, TAB,

Description

boxes, list boxes, combo boxes, menus, submenus, windows, lists, and selection names

and the first instances of new terms and specialized words that need emphasis

CTRL, ALT, or DELETE

Code Indicates variables or command-line entries, such as a DOS

entry or something you type into a field

x 880 Series Audio Distribution Amplifiers Instruction Manual

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Table P-2. Writing Conventions (Continued)

Preface

Term or Convention

> Indicates the direction of navigation through a hierarchy of

hyperlink Indicates a jump to another location within the electronic

Internet address

Obtaining Documents

Technical documents can be viewed or downloaded from our website. Alternatively, contact your Customer Service representative to request a document.

Note

Description

menus and windows

document or elsewhere

Indicates a jump to a Web site or URL

Indicates important information that helps to avoid and troubleshoot problems

880 Series Audio Distribution Amplifiers Instruction Manual xi

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Preface

Unpacking/Shipping Information

Unpacking a Product

This product was carefully inspected, tested, and calibrated before shipment to ensure years of stable and trouble-free service.

1. Check equipment for any visible damage that may have occurred during transit.

2. Confirm that you have received all items listed on the packing list.

3. Contact your dealer if any item on the packing list is missing.

4. Contact the carrier if any item is damaged.

5. Remove all packaging material from the product and its associated components before you install the unit.

Keep at least one set of original packaging, in the event that you need to return a product for servicing.

Returning a Product

In the unlikely event that your product fails to operate properly, please contact Customer Service to obtain a Return Authorization (RA) number, then send the unit back for servicing.

Keep at least one set of original packaging in the event that a product needs to be returned for service. If the original package is not available, you can supply your own packaging as long as it meets the following criteria:

• The packaging must be able to withstand the product’s weight.

• The product must be held rigid within the packaging.

• There must be at least 2 in. (5 cm) of space between the product and the container.

• The corners of the product must be protected.

Ship products back to us for servicing prepaid and, if possible, in the original packaging material. If the product is still within the warranty period, we will return the product prepaid after servicing.

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Standards

Appendix A: “Safety Precautions, Certifications, and Compliances” contains

product compliance and safety standards.

Restriction on Hazardous Substances (RoHS) Compliance

Directive 2002/95/EC—commonly known as the European Union (EU) Restriction on Hazardous Substances (RoHS)—sets limits on the use of certain substances found in electrical and electronic equipment. The intent of this legislation is to reduce the amount of hazardous chemicals that may leach out of landfill sites or otherwise contaminate the environment during end-of-life recycling. The Directive, which took effect on July 1, 2006, refers to the following hazardous substances:

• Lead (Pb)

• Mercury (Hg)

• Cadmium (Cd)

• Hexavalent Chromium (Cr-V1)

• Polybrominated Biphenyls (PBB)

Preface

• Polybrominated Diphenyl Ethers (PBDE)

According to this EU Directive, all products sold in the European Union will be fully RoHS-compliant and “lead-free.” (See our website for more information on dates and deadlines for compliance.) Spare parts supplied for the repair and upgrade of equipment sold before July 1, 2006 are exempt from the legislation. Equipment that complies with the EU directive will be marked with a RoHS-compliant emblem, as shown in Figure P-1.

Figure P-1. RoHS Compliance Emblem

Waste from Electrical and Electronic Equipment (WEEE) Compliance

The European Union (EU) Directive 2002/96/EC on Waste from Electrical and Electronic Equipment (WEEE) deals with the collection, treatment, recovery, and recycling of electrical and electronic waste products. The objective of the WEEE Directive is to assign the responsibility for the disposal of associated hazardous waste to either the producers or users of these products. Effective August 13, 2005, producers or users will be required to recycle electrical and electronic equipment at end of its useful life, and may not dispose of the equipment in landfills or by using other unapproved methods. (Some EU member states may have different deadlines.)

880 Series Audio Distribution Amplifiers Instruction Manual xiii

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Preface

In accordance with this EU Directive, companies selling electric or electronic devices in the EU will affix labels indicating that such products must be properly recycled. (See our website for more information on dates and deadlines for compliance.) Contact your local sales representative for information on returning these products for recycling. Equipment that complies with the EU directive will be marked with a WEEE-compliant emblem, as shown in Figure

P-2.

Figure P-2. WEEE Compliance Emblem

xiv 880 Series Audio Distribution Amplifiers Instruction Manual

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Safety

Carefully review all safety precautions to avoid injury and prevent damage to this product or any products connected to it. You will find a complete list of safety precautions in Appendix A. Any user-serviceable components (such as fuses or batteries) are only replaceable by those components listed in the manual.

IMPORTANT! Only qualified personnel should perform service procedures.

Safety Terms and Symbols in this Manual

WARNING

Statements identifying conditions or practices that may result in personal injury or loss of life. High voltage is present.

CAUTION

Statements identifying conditions or practices that can result in damage to the equipment or other property.

Preface

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Preface

xvi 880 Series Audio Distribution Amplifiers Instruction Manual

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

880 Series Mounting Frames

Overview

The 880 series, 8-output audio distribution amplifiers meet the most demanding requirements for AM/FM/TV broadcast and program production systems. Heading the list of the amplifier’s exceptional performance characteristics is the 100 dB S/N ratio. Flat frequency response, carefully controlled roll-off and very low distortion ensure a virtually transparent transmission path.

The amplifier’s input is overvoltage protected up to 120 volts AC or DC. The transformerless, balanced input is normally bridging, but can be terminated by installing a suitable resistor. Unbalanced input is converted to balanced output.

Chapter 1

Isolation between modules in the mounting frame is better than 100 dB over the entire audio frequency band.

The modular concept with two fully wired mounting frame options facilitates system design. The options are as follows:

• The FR-883 and FR-884 mounting frames accept up to twelve 880 series audio distribution amplifier modules.

• The FR-883 frame accepts one 884PS power supply, while the FR-884 frame accepts two 884PS power supplies. A fully loaded FR-884 frame will operate with a single power supply; however, we recommend that a second optional power supply be included for cooler operation and power redundancy.

• The high efficiency, shielded switching power supply accepts line inputs from 90 to 135 VAC without changing transformer taps.

880 Series Audio Distribution Amplifiers Instruction Manual 1

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 1: 880 Series Mounting Frames

Mounting Requirements

All Leitch equipment is carefully inspected and calibrated before shipment to ensure years of stable and trouble-free service.

•Review “Unpacking/Shipping Information” on page xii in the Preface to this manual.

• Inspect the equipment for any visible damage which may have occurred during transit before installation.

• Make sure that all modules are properly seated in the mounting frame.

The mounting requirements of the 880 series frame options are as follows.

FR-883

The FR-883 mounting frame requires 1 unit of rack space: 1¾ in. (44 mm) high × 19 in. (483 mm) wide × 11 in. (280 mm) deep. This frame can house 4 modules.

Figure 1-1. FR-883

Figure 1-2. FR-883 Back Panel

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Chapter 1: 880 Series Mounting Frames

FR-884

The FR-884 mounting frame requires 2 units of rack space: 3½ in. (88 mm) high × 19 in. (483 mm) wide × 11 in. (280 mm) deep. This frame can house 12 modules.

Figure 1-3. FR-884

Figure 1-4. FR-884 Back Panel

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Chapter 1: 880 Series Mounting Frames

Frame Cooling

The equipment is designed to operate in an ambient temperature range of 32°F – 122°F (0°C – 50°C). No special cooling arrangements are necessary, but you should take steps to prevent excessive ambient heat rise in closed, unventilated equipment racks.

Power Consumption

The FR-883 mounting frame accepts one 884PS power supply. The FR-883 frame power consumption is nominally 25VA.

The FR-884 mounting frame accepts one 884PS power supply. The frame is prewired to accept a second optional power supply for power backup. The FR-884 frame power consumption is nominally 65VA. A fully loaded frame will operate with a single power supply; however, we recommend that a second optional power supply be included for cooler operation and power redundancy.

To prevent electric shock, do not use the (polarized) plug with an extension cord, receptacle, or other outlet unless the blades can be fully inserted to prevent blade exposure.

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 1: 880 Series Mounting Frames

884 PS Power Supply

The model 884PS power supply is a two-stage switching power supply that provides that provides the following outputs:

• +21V at 1.0A

• –21V at 1.0A

Initial design criteria focused on maximizing efficiency and minimizing individual component temperature rise. This has been achieved with a two stage design consisting of an input “Buck” converter feeding a high efficiency push-pull output stage. Overall efficiency exceeds 80% and individual component temperature rise is minimized by operating both converts at high voltage and low current as well as using Schottky rectifier diodes on the output stage.

The power supply is designed to work over the two standard input voltage ranges. With input selector switch S2 in the 110 position, the power supply operates over and input range of 85 – 135VAC and with the switch in the 220 position the operating range is 170 – 270VAC. Output voltage is adjustable by ±10%. Other output voltages can be achieved by changing power transformer TR1 without any additional circuit changes.

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 1: 880 Series Mounting Frames

Cable Harness Support Bracket

The cable support bracket is made up of three parts:

• 1 right side bracket

• 1 left side bracket

• 1 cable support bar

The brackets screw to the back of the frame using an existing black screw. The screw is in the vertical center of the frame, 1¼ inches forward of the back edge. There is one screw on the right side of the frame at the very back of the frame. This screw is not removed. A clearance hole in the bracket will fit over this screw. There are two holes in the side of the brackets. The bottom of the bracket sits on the top edge of the bottom of the frame. Remove the screw from the side of the frame, place the bracket and replace the screw. Mount the cable support bar with a 6-32 x 3/8-inch binder head screw to each bracket.

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 1: 880 Series Mounting Frames

Back Panel Pinout Assignments

Figure 1-5. FR-883 Back Panel Pinout Assignments

Figure 1-6. FR-884 and FR-684-AV Balanced Audio Back Panel Pinout Assignments

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 1: 880 Series Mounting Frames

Back Panel Connections

Table 1-1. AMD-880; APD-880, ASD-880, and ATG-880 (dBm) Back Panel Connectors for FR-883

and FR-884 Mounting Frames

AMD-880 APD-880-1 APD-880-2 ARG-880 ASD-880 ATG-880 (dBm)

Mono Stereo Mono

1A IN A IN IN IN A IN

2A 1 A1 1 A1

3A 2 A2 2 1 A2 +8

4A 3 A3 3 2 A3 +8

5A 4 A4 4 3 A4 +4

1B IN 4 B IN +4

2B 5 B1 5 5 B1 0

3B 6 B2 6 6 B2 0

4B 7 B3 7 7 B3 –10

5B 8 B4 8 Remote Ctrl B4 –10

Mono/ Remote Gain

Stereo Test

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

AMD-880 Mono Audio Distribution

Amplifier Module

Overview

The AMD-880 mono audio distribution amplifier is designed to meet the most demanding requirements of broadcast facilities, television post-production, and recording studios. This excellent amplifier provides one high performance channel with eight balanced outputs. Outputs can be customized to low (66Ω), as per AES recommendation 1708 (I-3), or 600Ω impedance. Future impedance modifications are also possible, should requirements change. Excellent output isolation and interchannel crosstalk is assured by the individual drivers for each output.

The input is overvoltage-protected up to 120 volts AC or DC. The transformerless, balanced input is normally bridging, but can be terminated by installing a suitable resistor. Unbalanced input is converted to balanced output.

The AMD-880 exceptional performance features include 100 dB S/N ratio, flat frequency response, carefully controlled roll-off and very low distortion, thus ensuring a virtually transparent transmission path. The extended shaft option allows for front panel gain control in the FR-883 and FR-884 mounting frames.

Chapter 2

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 2: AMD-880 Mono Audio Distribution Amplifier Module

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Chapter 3

APD-880 Programmable Audio Distribution

Amplifier Module

Overview

The APD-880 mono/stereo programmable audio distribution amplifier has the capability to provide many types of outputs simultaneously. Output signal types are determined by the use of a removable sub-module. Several formats are available that allow this module to replace any Leitch audio amplifier to date.

• APD-880-1 — Stereo in, 4 stereo out (Figure 3-2 on page 12)

• APD-880-2 — Mono in, 8 mono out (Figure 3-3 on page 12)

880 Series Audio Distribution Amplifiers Instruction Manual 11

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 3: APD-880 Programmable Audio Distribution Amplifier Module

Configuring an APD-880-0

1. Remove the cover from the APD-880-0 module.

2. Wire the selected configuration as shown in the following wiring diagrams for each version.

Figure 3-1. ADP-880-0 Module

Figure 3-2. APD-880-1 — Stereo in, 4 stereo out Figure 3-3. APD-880-2 — Mono in, 8 mono out

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 4

ARG-880 Audio Remote Gain Distribution

Amplifier Module

Overview

The ARG-880 audio remote gain distribution amplifier is a high performance amplifier that offers a ± 20dB remotely controlled audio gain that can be increased for specific applications. Control is selectable to either remote or local. Flat frequency response, carefully controlled roll-off and very low distortion ensure a virtually transparent transmission path.

The input is overvoltage-protected up to 120 volts AC or DC. The transformerless, balanced input IDs normally bridging, but can be terminated by installing a suitable resistor. Unbalanced input is converted to balanced output. Isolation between modules in the mounting frame is better than 90dB over the entire audio frequency band.

880 Series Audio Distribution Amplifiers Instruction Manual 13

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 4: ARG-880 Audio Remote Gain Distribution Amplifier Module

Remote Control Information

The remote control for the ARG-880 is a 0 to 5 VDC signal sent to the ARG-880 module from a potentiometer (10kΩ) located at a remote location. Ground reference and +5VDC source are located at connection 5B on the FR-883 and FR-884 frames. The actual remote connection is as follows:

Figure 4-1. Remote Connections

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

ASD-880 Stereo Audio Distribution

Amplifier Module

Overview

The ASD-880 stereo audio distribution amplifier is designed to meet the most demanding requirements of broadcast facilities, television post-production, and recording studios. This excellent amplifier provides one high performance channel with eight balanced outputs. Outputs can be customized to low (66Ω), as per AES recommendation 1708 (I-3), or 600Ω impedance. Future impedance modifications are also possible, should requirements change. Excellent output isolation and interchannel crosstalk is assured by the individual drivers for each output.

The ASD-880 exceptional performance features include 100 dB S/N ratio, flat frequency response, carefully controlled roll-off and very low distortion, thus ensuring a virtually transparent transmission path. The extended shaft option allows for front panel gain control in the FR-883 and FR-884 mounting frames.

Chapter 5

880 Series Audio Distribution Amplifiers Instruction Manual 15

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 5: ASD-880 Stereo Audio Distribution Amplifier Module

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ATG-880 Audio Tone

Generator Module

Overview

The ATG-880 is a low distortion audio tone generator with high level-stability. The module provides 8 outputs, that is, four pairs of outputs, each pair being at a different level. One output of each pair can be pulsed off and on at a rate of about once per second.

Chapter 6

The basic tone generator is a Wien-bridge oscillator, chosen for its inherent low distortion. The bridge consists of the RC network at pins 14 and 12 of IC4D and ground. The network contains two arms. The top arm is series resonant at 400Hz when the switch is open and 1000Hz when closed. Similarly, the bottom arm is parallel resonant at 400Hz when the switch is open and 1000Hz when closed. At resonance, the voltage at pin 12 of IC4D is at a maximum with respect to the voltage of pin 14 while the relative phase angle is zero. In order to sustain steady oscillation, IC4D must be maintained at a gain of 3. This is achieved by means of the circuit consisting of IC4A, IC4B, IC4C and IC1A.

The output from pin 14 of IC4D is amplified to a gain of 4 by inverting amplifier IC4A. Its output at pin 1 is AC coupled through a 68 μF capacitor and diverted to two places, that is, the control loop and the output stage later described.

880 Series Audio Distribution Amplifiers Instruction Manual 17

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Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Chapter 6: ATG-880 Audio Tone Generator Module

Control Loop

The control loop converts the signal to a DC voltage proportional to its level by means of the full-wave rectifier and integrator consisting of IC4B and IC4C. During the positive half cycle, pin 7 of IC4B goes low, turning on diode D4 and thus, holding pin 7 to zero volts. As pin 6 of IC4B and pin 9 of IC4C are also at virtual ground level, the cathode of diode D5 is also zero volts. During the negative half cycles, pin 7 of IC4B goes high, turning on diode D5 and off diode D4, thus causing negative half cycles of equal but inverted amplitude to appear at the cathode of diode D5. This signal is combined with the original in a two to one ratio by summing amplifier/ integrator IC4C. The resultant DC voltage at pin 8 of IC4C is proportional to the peak voltage of the oscillator.

The negative DC voltage from Zener diode IC7 is also added at the summing point of IC4C at pin 9 through the 20K LEVEL trimpot to adjust the signal amplitude.

The positive DC voltage at pin 8 of IC4C biases the anode of diode D1 through a 4.7k resistor and the cathode of D2 through voltage inverter IC1A and a 4.7k resistor. The bias current controls the dynamic resistance of diodes D1 and D2, thereby controlling the net resistance from pin 13 of IC4D to ground and thus, maintaining the gain of IC4D at 3.

Output Stage

The output stage accepts the signal from the 68 μF capacitor and converts it to a balanced signal by means of buffer IC1C and inverter IC1B.

The signal from pins 7 and 8 of IC1 is taken directly to output drivers IC3A, IC3B, IC3C and IC3D which buffer the 8 dBm Outputs 1 and 2. Each subsequent output pair is taken from pins 7 and 8 of IC1 trough a resistive network that attenuates the signal to the desired levels before being buffered by their corresponding output drivers. The outputs numbered 2, 4, 6 and 8, representing the left channel of each output pair, are bridged prior to the output driver by analog switch IC8 and a pair of 100k resistors. A high level on the control line of the analog switches will cause them to close and turn off the left channel of each pair. Closing the IDENT switch will enable multivibrator IC2 and thus cause the left channel of each pair to be pulsed off and on at about once per second.

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884PS Power Supply Module

Overview

The model 884PS power supply is a two stage switching power supply that provides the following outputs:

• + 21 V@ 1.0 A

• – 21 V @ 1.0 A

Chapter 7

Initial design criteria focused on maximizing efficiency and minimizing individual component temperature rise. This has been achieved with a two stage design consisting of an input “Buck” converter feeding a high-efficiency. push-pull output stage. Overall efficiency exceeds 80% and individual component temperature rise is minimized by operating both converts at high voltage and low current as well as using Schottky rectifier diodes on the output stage. The power supply operates over an input range of 85-135 VAC when input selector switch S2 is in the 110 position, and when the switch is in the 220 position the operating range is 170-270 VAC.

Output voltage is adjustable by ±10%. Other output voltages can be achieved by changing power transformer TR1 without any additional circuit changes.

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Chapter 7: 884PS Power Supply Module

Installing the 884PS-48

Precautions

WARNING: To reduce the risk of electric shock or energy hazards

• Connect the 884PS to a reliably grounded SELV source or a centralized DC source.

• Make sure the branch circuit overcurrent protection is rated a maximum 15A circuit breaker in series with a maximum 5A listed fuse. (See “Suggested Protection Devices” on page 21.)

• Use 14 AWG solid copper conductors only.

• Incorporate a readily accessible, suitably approved, and suitably rated disconnect device into the field wiring. (See “Suggested breaker switch type” on page 21.)

• Install the 884PS in a restricted access area in accordance with the NEC or the authority having jurisdiction.

WARNING: To reduce the risk of electric shock

• Perform installation and exchange only you are a trained technician who is familiar with these instructions and aware of the shock hazards of working with live equipment.

• Install the 884PS-48 power supply in accordance with the schematic diagram shown in Figure 7-1. Power can only be disconnected completely from the 880 series frame through a studio installed breaker or fuse.

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Chapter 7: 884PS Power Supply Module

Branch Circuit Schematic

The 884PS-48 power supply differs from other Leitch power supplies in that it depends on the studio’s installed circuit breaker/fuse to disconnect power to the frame.

Figure 7-1. Typical Branch Circuit Drawing

Suggested Protection Devices

Suggested breaker switch type Eaton Heinemann®, series AM/S*, part no.

Suggested branch circuit fuse type Buss® part no. GMT-5† or equivalent

* “Heinemann” is a registered trademark of Eaton Corporation, Cleveland, Ohio. The AM/S series are products of Eaton Corporation. † “Buss” is a registered trademark of Cooper Bussman, St. Louis, Missouri.

M1S-B2-A-A-02J-H-A-52-NO-10-10 or equivalent

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Chapter 7: 884PS Power Supply Module

Maintaining the 884PS-48

Power Supply Replacement Fuse Information

WARNING: For continued protection against fire, replace only with the same type and rating of fuse.

The replacement fuse (F1) for the 884PS-48 is a Wickmann 19194-2.5A, 250V fuse. This replacement fuse is a product of Wickmann-Werke, Witten, Germany.

Power Supply Connections

Use the XLR connector at the back of the power supply or frame (if the 884PS-48 is installed in a frame) to make the following pin connections for the 884PS-48.

Figure 7-2. XLR Connector

Pin Number Connection

1 –48 V

20 V

3 Chassis

Specifications

Specifications: 884PS-48

Input 42–60 VDC 1.5A

50 VA maximum

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Specifications

Overview

Specifications and designs are subject to change without notice.

The following specification tables appear in this chapter:

• Electrical

Chapter 8

• Mechanical

• Input

•Output

• Performance

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Chapter 8: Specifications

FR-883 / FR-884 Mounting Frames

Electrical

Table 8-1. FR-883 / FR-884 Mounting Frame Electrical Specifications

Item Specification

Voltage 90 – 135 VAC

Frequency 50/60 Hz

Power 65 VA max. (fully loaded)

Mechanical

Table 8-2. FR-883 / FR-884 Mounting Frame Mechanical Specifications

Item Specification

Height 3½ in. (88 mm)

Width 19 in. (483 mm)

Depth from mounting surface 11 in. (280 mm)

Nominal weight (with modules) 19.6 lb (8.9 kg)

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Chapter 8: Specifications

AMD-880 Mono Audio Distribution Amplifier Module

Input

Table 8-3. AMD-880 Input Specifications

Item Specification

Impedance > 30KΩ, balanced

Max. level +30 dBu

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz

> 60 dB @ 20 kHz

Output

Performance

Table 8-4. AMD-880 Output Specifications

Item Specification

Number of outputs 8

Impedance Low impedance (66Ω, balanced)

Max. level +30 dBu

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-5. AMD-880 Performance Specifications

Item Specification

Gain range – 6 to +33 dB

(± 6 dB on 18-turn pot, 0, +9, +18, +27 dB on jumper)

Signal to noise > 100 dB @ unity gain

20 Hz – 20 kHz, relative to +8 dBu signal, unweighted

Frequency response < ± 0.05 dB, 20 Hz – 20 kHz, relative to 1

kHz, any level up to +30 dBu

Total harmonic distortion < 0.02%, 20 Hz – 20 kHz @ +30 dBu

Intermodulation distortion < 0.01% SMPTE @ +18 dBu

< 0.02% SMPTE @ +24 dBu

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

AMD-880 Mono Audio Distribution Amplifier Module (600Ω Impedance)

Input

Table 8-6. AMD-880 (600Ω Impedance) Input Specifications

Item Specification

Impedance > 30 kΩ, balanced

Max. level +30 dBm

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz

> 60 dB @ 20 kHz

Output

Performance

Table 8-7. AMD-880 (600Ω Impedance) Output Specifications

Item Specification

Number of outputs 8

Impedance 600 Ω balanced

Max. level +24 dBm

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-8. AMD-880 (600Ω Impedance) Performance Specifications

Item Specification

Gain range – 6 to +33 dB

(± 6 dB on 18-turn pot, 0, +9, +18, +27 dB on jumper)

S/N ratio > 100 dB @ unity gain

20 Hz – 20 kHz, relative to +8 dBm signal, unweighted

Frequency response < ± 0.05 dB, 20 Hz – 20 kHz, rel. to 1

kHz, any level up to +24 dBm

Total harmonic distortion < 0.05%, 20 Hz – 20 kHz @ +24 dBm

Intermodulation distortion < 0.02% SMPTE @ +18 dBm

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

APD-880 Programmable Audio Distribution Amplifier Module

Input

Table 8-9. APD-880 Input Specifications

Item Specification

Impedance > 30KΩ, balanced

Max. level +30 dBu

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz

> 60 dB @ 20 kHz

Output

Performance

Table 8-10. APD-880 Output Specifications

Item Specification

Channels 2

Outputs per channel 4

Impedance Low impedance (66Ω, balanced)

Max. level +30 dBu

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-11. APD-880 Performance Specifications

Item Specification

Gain range – 6 to +33 dB

± 6 dB on 18-turn pot, 0, +9, +18, +27 dB on jumper)

Signal to noise > 100 dB @ unity gain

20 Hz – 20 kHz, relative to +8 dBu signal, unweighted

Frequency response < ± 0.05 dB, 20 Hz – 20 kHz, relative to 1 kHz, any

level up to +30 dBu

Total harmonic distortion < 0.02%, 20 Hz – 20 kHz @ +30 dBu

Intermodulation distortion < 0.01% SMPTE @ +18 dBu

< 0.02% SMPTE @ +24 dBu

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Interchannel crosstalk > 95 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

APD-880 Programmable Audio Distribution Amplifier Module (600Ω Impedance)

Input

Table 8-12. APD-880 (600Ω Impedance) Input Specifications

Item Specification

Impedance > 30 kΩ, balanced

Max. level +30 dBm

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz

> 60 dB @ 20 kHz

Output

Performance

Table 8-13. APD-880 (600Ω Impedance) Output Specifications

Item Specification

Channels 2

Outputs per channel 4

Impedance 600Ω balanced

Max. level +24 dBm

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-14. APD-880 (600Ω Impedance) Performance Specifications

Item Specification

Gain range – 6 to +33 dB

(± 6 dB on 18-turn pot,0, +9, +18, +27 dB on jumper)

S/N ratio > 100 dB @ unity gain 20 Hz – 20 kHz,

relative to +8 dBm signal, unweighted

Frequency response < ± 0.05 dB 20 Hz – 20 kHz, rel. to 1

kHz, any level up to +24 dBm

Total harmonic distortion < 0.05%, 20 Hz – 20 kHz @ +24 dBm

Intermodulation distortion < 0.02% SMPTE @ +18 dBm

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Interchannel crosstalk > 95 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

ARG-880 Audio Remote Gain Distribution Amplifier Module

Input

Table 8-15. ARG-880 Input Specifications

Item Specification

Impedance > 50KΩ, balanced

Max. level +30 dBm

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz, > 60 dB @ 20 kHz

Output

Performance

Table 8-16. ARG-880 Output Specifications

Item Specification

Number of outputs 7

Impedance 600Ω, balanced

Max. level +24 dBm

Output to output isolation >70 dB 20 Hz to 20 kHz

Table 8-17. ARG-880 Performance Specifications

Item Specification

Gain range – 20 to +20 dB

Signal to noise > 100 dB @ unity gain

20 Hz – 20 kHz, relative to +8 dBm signal, unweighted

Frequency response < ± 0.05 dB, 20 Hz – 20 kHz, relative to 1

kHz, any level up to +24 dBm

Total harmonic distortion < 0.02%, 20 Hz – 20 kHz @ +24 dBm, all

outputs loaded

Intermodulation distortion < 0.01% SMPTE @ +18 dBm

< 0.02% SMPTE @ +24 dBm

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

Control input 0 to 5V DC

+5V DC provided as output

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Chapter 8: Specifications

ASD-880 Stereo Audio Distribution Amplifier Module

Input

Table 8-18. ASD-880 Input Specifications

Item Specification

Impedance > 30KΩ, balanced

Max. level +30 dBu

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz, > 60 dB @ 20 kHz

Output

Performance

Table 8-19. ASD-880 Output Specifications

Item Specification

Channels 2

Outputs per channel 4

Impedance Low impedance (66Ω, balanced)

Max. level +30 dBu

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-20. ASD-880 Performance Specifications

Item Specification

Gain range – 6 to +33 dB

(± 6 dB on 18-turn pot, 0, +9, +18, +27 dB on jumper)

Signal to noise > 100 dB @ unity gain

20 Hz – 20 kHz, relative to +8 dBu signal, unweighted

Frequency response ± 0.05 dB, 20 Hz – 20 kHz, relative to 1

kHz, any level up to +30 dBu

Total harmonic distortion < 0.02%, 20 Hz – 20 kHz @ +30 dBu

Intermodulation distortion < 0.01% SMPTE @ +18 dBu

< 0.02% SMPTE @ +24 dBu

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Interchannel crosstalk > 95 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

ASD-880 Stereo Audio Distribution Amplifier Module (600Ω Impedance)

Input

Table 8-21. ASD-880 (600Ω Impedance) Input Specifications

Item Specification

Impedance > 30 kΩ, balanced

Max. level +30 dBm

Common mode range ± 20 volts

Common mode rejection > 90 dB @ 60 Hz

> 60 dB @ 20 kHz

Output

Performance

Table 8-22. ASD-880 (600Ω Impedance) Output Specifications

Item Specification

Channels 2

Outputs per channel 4

Impedance 600 Ω balanced

Max. level +24 dBm

Output to output isolation > 70 dB 20 Hz to 20 kHz

Table 8-23. ASD-880 (600Ω Impedance) Performance Specifications

Item Specification

Gain range – 6 to +33 dB

(± 6 dB on 18-turn pot, 0, +9, +18, +27 dB on jumper)

S/N ratio > 100 dB @ unity gain 20 Hz – 20 kHz,

relative to +8 dBm signal, unweighted

Frequency response < ± 0.05 dB 20 Hz – 20 kHz, rel. to 1

kHz, any level up to +24 dBm

Total harmonic distortion < 0.05%, 20 Hz – 20 kHz @ +24 dBm

Intermodulation distortion < 0.02% SMPTE @ +18 dBm

Isolation between modules > 100 dB, 20 Hz – 20 kHz

Interchannel crosstalk > 95 dB, 20 Hz – 20 kHz

Temperature range 41°– 104°F (5°– 40°C)

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Chapter 8: Specifications

ATG-880 Audio Tone Generator Module

Table 8-24. ATG-880 Specifications

Item Specification

Frequencies 400/1000 Hz, switchable

Frequency option 440 Hz on request

Frequency accuracy < ± 1%

Number of outputs 8

Output levels + 8 dBm (2 outputs)

+ 4 dBm (2 outputs) 0 dBm (2 outputs) –10 dBm (2 outputs)

Output level accuracy < ± 0.05 dB (all outputs relative to +8

dBm output)

Output level stability < 0.1 dB

Total harmonic distortion <0.1%, all outputs

Output impedance 600Ω, balanced

Temperature range 32°– 122°F (0° – 50° C)

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Appendix A

Safety Precautions, Certifications, and

Compliances

Overview

Carefully observe the safety alert symbols below for dangers, warnings, and cautions. They alert installers and operators of possible dangers or important information contained in this manual.

Keep in mind, though, that warnings alone do not eliminate hazards, nor are they a substitute for safe operating techniques and proper accident prevention measures.

Any user-serviceable components (such as fuses or batteries) are only replaceable by those components listed in the manual.

IMPORTANT! Only qualified personnel should perform service procedures.

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Appendix A: Safety Precautions, Certifications, and Compliances

Safety Terms and Symbols in this Manual

WARNING

Statements identifying conditions or practices that may result in personal injury or loss of life. High voltage is present.

CAUTION

Statements identifying conditions or practices that can result in damage to the equipment or other property.

Safety Terms and Symbols on the Product

DANGER: High voltage and indicates a personal injury hazard immediately accessible as one reads the marking.

WARNING: Indicates a personal injury hazard not immediately accessible as one reads the marking.

CAUTION: Indicates a hazard to property, including the product, or to pay attention and refer to the manual.

Protective ground (earth) terminal.

Fuse. Replace with same type and rating of fuse. Zur Vermeidung von Feuer verwenden Sie nur Sicherungen mit der für dieses Produkt geforderten Typ und Stromstärke.

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Appendix A: Safety Precautions, Certifications, and Compliances

Preventing Electrostatic Discharge

Observe precautions for handling electrostatic sensitive devices.

CAUTION: Electrostatic discharge (ESD) can damage components in the product. To prevent ESD, observe these precautions when directed to do so:

1. Use a Ground Strap. Wear a grounded antistatic wrist strap to discharge the static voltage from your body while installing or removing sensitive components.

2. Use a Safe Work Area. Do not use any devices capable of generating or holding a static charge in the work area where you install or remove sensitive components. Avoid handling sensitive components in areas that have a floor or benchtop surface capable of generating a static charge.

3. Handle Components Carefully. Do not slide sensitive components over any surface. Do not touch exposed connector pins. Handle sensitive components as little as possible.

4. Transport and Store Carefully. Transport and store sensitive components in a static-protected bag or container.

Injury Precautions

WARNING Potentially lethal voltages are present within the frame during normal operation. The AC power cord must be disconnected from the frame before the top panel is removed. (In frames with multiple power supplies, remove ALL power cords.) Power should not be applied to the frame while the top is open unless properly trained personnel are servicing the unit. Pull out the plug from the main socket before the removal of a cover.

Przod zdjeciem pokrywy wyciagnac wtyczke z gniazda sieciowego.

WARNING: SHOCK HAZARD - DO NOT OPEN.

AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR.

MOUNT IN RACK ONLY

INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT.

USE PROPER POWER CORD

To avoid fire hazard, use only the power cord specified for this product.

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Appendix A: Safety Precautions, Certifications, and Compliances

GROUND THE PRODUCT

This is a Safety Class 1 product and is grounded through the grounding conductor of the power cord. To avoid electrical shock, the grounding conductor must be connected to earth ground. Before making connections to the product’s input or output terminals, ensure the product is properly grounded.

WARNING: THIS APPLIANCE MUST BE GROUNDED. WARNING: THIS APPLIANCE MUST BE EARTHED.

VARNING: APPARATEN SKALL ANSLUTAS TILL JORDAT UTTAG NÄR DEN ANSLUTS TILL ETT NÄTVERK.

DO NOT OPERATE WITHOUT COVERS

To avoid electrical shock or fire hazard, do not operate this product with covers or panels removed.

USE PROPER FUSE

To avoid fire hazard, use only the fuse type and rating specified for this product.

DO NOT OPERATE IN WET/DAMP CONDITIONS

To avoid injury or fire hazard, do not operate this product in wet or damp conditions.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

To avoid injury or fire hazard, do not operate this product in an explosive atmosphere.

AVOID EXPOSED CIRCUITRY

To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do not touch exposed connections and components when power is present.

Product Damage Precautions

CAUTION: Disconnect power from the frame before removing or installing input/ output modules. Removing or installing modules with power applied could cause serious damage to system components.

USE PROPER POWER SOURCE

Do not operate this product from a power source that supplies more than the specified voltage.

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Appendix A: Safety Precautions, Certifications, and Compliances

USE PROPER VOLTAGE SETTINGS

Before applying power, ensure that the line selector is in the proper position for the power source being used.

PROVIDE PROPER VENTILATION

To prevent product overheating, provide proper ventilation.

DO NOT OPERATE WITH SUSPECTED FAILURES

If you suspect there is damage to this product, have it inspected by qualified service personnel. CAUTION: This unit can have more than one power supply cord. To de-energize the internal circuitry, you have to disconnect all power cords.

ADVARSEL: Utstyret kan ha mere ennn en tilførselsledning. For å gjore interne deler spennigsløse må alle tilførselsledningene trekkes ut. VARNING: Denna apparat har mer än en nätanslutning. Samtliga nätkablar måste bortkopplas för att göra de interna kretsarna spänningsfria.

Fuse: Replace with same type and rating of fuse. Caution: Replace with same type fuse. Attention: Utiliser un fusible de rechange de même type. Caution: Disconnect supply cord before changing fuse. Attention: Débrancher avant de remplacer le fusible. Achtung: Vor auswechseln der sicherung ist das gerät vom netz zu

trennen.

CAUTION: Disconnect power from the frame before removing or installing input/ output modules. Removing or installing modules with power applied could cause serious damage to system components.

USE PROPER POWER SOURCE

Do not operate this product from a power source that supplies more than the specified voltage.

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Appendix A: Safety Precautions, Certifications, and Compliances

EMC and Safety Standards

This product has been tested and found to comply with the following IEC, FCC, UL, ICES, and CSA standards, per the provision of the Electromagnetic Compatibility Directive 89/336/EEC of 3 May 1989 as amended by 92/31EEC of 28 April 1992 and 93/68/EEC, Article 5 of 22 July 1993, and the Low Voltage Directive 73/23/EEC of 19 February

1973.

EMC Standards

Table A-1. EMC Standards

EMC Standard Description

EN55014 Limits and Methods of Measurement of Radio Disturbance Characteristics of Electric

Motor-Operated and Thermal Appliances for Household and Similar Purposes, Electric Tools, and Similar Electric Apparatus

EN55022 Limits and Methods of Measurement of Radio Disturbance Characteristics of

Information Technology Equipment-Class A

EN55103-1 Electromagnetic Compatibility — Product Family Standard for Audio, Video,

Audio-Visual, and Entertainment Lighting Control Apparatus for Professional Use — Part 1: Emission, Environment E4

EN55103-2 Electromagnetic Compatibility — Product Family Standard for Audio, Video,

Audio-Visual, and Entertainment Lighting Control Apparatus for Professional Use — Part 2: Immunity, Environment E4

EN61000-3-2 Limits for Harmonic Current Emissions (Equipment Input Current Less Than or Equal

to 16 A Per Phase)

EN61000-3-3 Limitations of Voltage Fluctuations and Flicker in Low Voltage Supply Systems for

Equipment with Rated Current Less Than 16 A

EN61000-4-2 Electrostatic Discharge Requirements “ESD” 2 kV CD, 4 kV AD

EN61000-4-3 Radiated Radio-Frequency Electromagnetic Field Immunity Test 1 V/m {1 kHz 80%

AM, 80-1000 MHz}

EN61000-4-4 Electrical Fast Transient Requirements “Burst,” 0.5 kV Sig. & Ctrl. Lines 0.5 kV a.c.

& d.c. Power Line, 0.5 kV Functional Earth

EN61000-4-5 Surge Immunity Test 0.5 kV a.c. Power Line

EN61000-4-6 Immunity to Conducted Disturbances Induced by Radio Frequency Fields 1 V rms

0.15-80 MHz Sig. & Ctrl. Lines, 3 V rms 0.15-80 MHz d.c. Power Line, 1 V rms

0.15-80 MHz a.c. Power Line, 1 V rms 0.15-80 MHz Functional Earth

EN61000-4-11 Voltage Dips, Short Interruptions, and Voltage Variations- Immunity Tests

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Appendix A: Safety Precautions, Certifications, and Compliances

These devices are for professional use only and comply with Part 15 of FCC rules. Operation is subject to the following two conditions:

1. These devices may cause interference to radio and TV receivers in residential areas.

2. These devices will accept any interference received, including interference that may cause undesired operations.

Changes or modifications not expressly approved by Leitch Technology,™ the party responsible for compliance to the FCC Part 15 Rule, could void the user’s authority to operate this equipment legally in the United States.

These devices do not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the interference standard entitled “Digital apparatus,” ICES-003 of the Canadian Department of Communications.

Additional EMC Information

This device is for professional use in a controlled EMC environment, such as purpose-built broadcast studios.

EMC regulations require that the radiation emitted from this unit does not exceed certain limits. These limits are only met when the front panel is closed and the two thumb screws are secured.

Compliance to the EMC regulations is also dependent on the use of suitably shielded (screened) cables. Coax cables should be of the double-shielded (screened) variety. Unused BNCs should be fitted with 75Ω terminations.

All audio cables should be screened with the shield (screen) making good contact with the metallic parts of the cable connectors.

D-type connectors used with this unit should always have metallic shells with the shield (screen) of the cable mechanically bonded to the metal shell. It is further recommended that the D-type cable connectors be of the “dimple” variety. These connectors make a better contact and consequently improve EMC performance.

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Appendix A: Safety Precautions, Certifications, and Compliances

Safety Standards

Table A-2. Harmonized and Reference IEC Safety Standards

Harmonized Standard Reference IEC Standard Description

EN 60950:1992 with Am1, Am 2, Am 3, Am4, A11 amendments

EN 60950 IEC 60950:1999 (Modified) Safety of Information Technology Equipment

EN 60065 IEC 60065: 1998 (Modified)

EN 60825-1:1999 IEC 60825-1:1993 Safety of Laser Products—Part 1: Equipment Classification,

EN 60825-2:2000 IEC 60825-2:2000 Safety of Laser Products—Part 2: Safety of Optical

UL 1419 (March 28, 1997

IEC 60950:1991 (Modified) Safety of Information Technology Equipment

IEC 60950-1 (2001-10) Information Technology Equipment Safety—

Part 1: General Requirements

Audio, Video, and Similar Electronic Apparatus

6th Edition

IEC 60065 (2001) 7th Edition

Amendment 1 to IEC 60065 7th Edition

IEC 60825-1 (2001-08) Edition 1.2

2nd Edition Standard for Professional Video and Audio Equipment

Safety Requirements

Audio, Video, and Similar Electronic Apparatus Safety Requirements

Requirements, and User's Guide

Fibre Communication Systems

Safety of Laser Products—Part 1: Equipment Classification, Requirements, and User's Guide

UL 6500 (September 30, 1999)

UL 60950 (December 1, 2

000

)

CAN/CSA-C22.2 No. 60950-00

CAN/CSAE60065-00

CAN/CSA-C22.2 No. 1-98

CSA C22.2 No. 1-98 including Am1 (June, 2003)

40 880 Series Audio Distribution Amplifiers Instruction Manual

2nd Edition Standard for Audio/Video and Musical Instrument

Apparatus for Household, Commercial, and Similar General Use

3rd Edition Safety of Information Technology Equipment

Safety of Information Technology Equipment (Bi-National Standard, with UL 60950)

Audio, Video and Similar Electronic Apparatus Safety Requirements (Adopted IEC 60065:1998, 6th Edition, with Canadian Deviations)

Audio, Video, and Similar Electronic Equipment

Page 57

Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Index

Keywords

AMD-880

back panel connections description 9 specifications

input specifications output specifications 25, 26 performance specifications 25, 26

APD-880

back panel connections configuration 12 description 11 specifications

input specifications output specifications 27, 28 performance specifications 27

ARG-880

description

remote control information 14 specifications

input specifications output specifications 29 performance specifications 29

ASD-880

back panel connections description 15 specifications

input specifications output specifications 30, 31 performance specifications 30, 31

ATG-880

back panel connections control loop 18 description 17 output stage 18

specifications 32 Audio remote gain distribution amplifier. See ARG-880 Audio tone generator. See ATG-880

25, 26

27, 28

30, 31

Audio tone generator. See ATG-880

B-H

Back panel connections

AMD-880 APD-880 8 ASD-880 8 ATG-880 8 FR-883 7

FR-884 7 Cable harness support bracket 6 Configuration. See APD-880 Control loop. See ATG-880 EMC standards FR-883

back panel connections

description 2

mounting requirements 2

power consumption 4

power supply 5

specifications 24 FR-884

back panel connections

description 3

mounting requirements 3

power consumption 4

power supply 5

specifications 24 Frames

back panel connections

cable harness support bracket 6

cooling 4

descriptions 2–3

mounting requirements

power consumption 4

power supply 5, 19–22

38–39

FR-883 FR-884 3

880 Series Audio Distribution Amplifiers Instruction Manual 41

Page 58

Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.

Index

I-R

Injury precautions 35 Input specifications

AMD-880 APD-880 27, 28 ARG-880 29

ASD-880 30, 31 Manual information ix–xi Modules

AMD-880

APD-880 11–12

ASD-880 15

ATG-880 17 Mono audio distribution amplifier. See AMD-880 Output specifications

AMD-880

APD-880 27, 28

ARG-880 29

ASD-880 30, 31 Output stage. See ATG-880 Performance specifications

AMD-880

APD-880 27

ARG-880 29

ASD-880 30, 31

ATG-880 32 Power consumption 4 Power supply 5, 19–22 Precautions

injury

product damage 36

safety 33–37 Preventing electrostatic discharge 35 Product damage precautions 36 Programmable audio distribution amplifier. See APD-880

25, 26

S-Z

Remote control information 14 Safety precautions

injury precautions preventing electrostatic discharge 35 product damage precautions 36 safety terms and symbols in this manual xv, 34 safety terms and symbols on the product 34

Specifications

AMD-880

input specifications output specifications 25, 26 performance specifications 25, 26

APD-880

input specifications output specifications 27, 28 performance specifications 27

ARG-880

input specifications output specifications 29 performance specifications 29

ASD-880

input specifications output specifications 30, 31

performance specifications 30, 31 ATG-880 32 frame

electrical specifications

mechanical specifications 24

Standards

EMC standards safety standards 40

Stereo audio distribution amplifier. See ASD-880 Unpacking a Leitch product

25, 26

27, 28

30, 31

38–39

xii

42 880 Series Audio Distribution Amplifiers Instruction Manual