GRASS VALLEY 2020ADC User manual

2020ADC
4-CHANNEL AUDIO A-D CONVERTER
Instruction Manual
SOFTWARE VERSION 2.0
071802402
MAY 2007

Affiliate with the N.V. KEMA in The Netherlands
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ccredited By:
ANAB

2020ADC
4-CHANNEL AUDIO A-D CONVERTER
Instruction Manual
SOFTWARE VERSION 2.0
071802402
MAY 2007

4 2020ADC — Instruction Manual
Contacting Grass Valley
Copyright © Grass Valley. All rights reserved.
This product may be covered by one or more U.S. and foreign patents.
Grass Valley Web Site
The www.thomsongrassvalley.com web site offers the following:
Online User Documentation — Current versions of product catalogs, brochures,
data sheets, ordering guides, planning guides, manuals, and release notes
in .pdf format can be downloaded.
FAQ Database — Solutions to problems and troubleshooting efforts can be
found by searching our Frequently Asked Questions (FAQ) database.
Software Downloads — Download software updates, drivers, and patches.
International
Support Centers
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United States/Canada
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Centers
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Hong Kong, Taiwan, Korea, Macau: [phone] Indian Subcontinent: [phone]
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Benelux/Belgium: [phone] Benelux/Netherlands: [phone] N. Europe: [phone]
Germany, Austria, Eastern Europe: [phone] UK, Ireland, Israel: [phone]

2020ADC — Instruction Manual 5
Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2020ADC 4-Channel Audio Analog to Digital Converter. . . . . . . . . . . . . . . . 9
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Module Placement in the 2000 Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Audio Reference Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operation Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Local Onboard Module Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Input Level Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configuring Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Remote Control Lockout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Remote Configuration and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Module Configuration Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Signal Configuration Displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Software Update Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Differential Input, Analog Gain and A/D Converters . . . . . . . . . . . . . . . . . . . . 29
Digital Reference Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Routing and Control FPGA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6 2020ADC — Instruction Manual
Contents

2020ADC — Instruction Manual 7
Preface
About This Manual
This manual describes the features of a specific 2000 Series module in the
Kameleon Media Processing System. As part of this module family, it is
subject to Safety and Regulatory Compliance described in the 2000 Series
frame and power supply documentation (see the 2000 Series Frames Instruc-
tion Manual).

8 2020ADC — Instruction Manual
Preface

Instruction Manual 9
2020ADC 4-Channel Audio
Analog to Digital Converter
Introduction
The 2020ADC converts four channels of analog audio to two balanced or
unbalanced digital audio outputs. All signals are connected via the corre-
sponding passive rear module in the back of the 2000 frame. The four chan-
nels of analog audio enter via plug-in terminal blocks. A 48 kHz AES/EBU
reference, connected to the loop-through input BNCs, is required to lock
the module. Digital outputs are available through 75 ohm BNCs (unbal-
anced) or plug-in terminal blocks (balanced).
The 2020ADC can modify the incoming gain of each analog channel and
provides a choice of output modes.
The 2020ADC features:
• AES/EBU loop-through reference input,
• 48 kHz sampling rate,
• 24-bit quantization,
• Conversion of four channels of analog audio,
• Two 75 ohm (unbalanced) or 110 ohm (balanced) outputs,
• Choice of output modes include normal, channel swap, phase invert,
channel summing and tone,
• Independent input level control from +12 dBu to +28 dBu,
• Remote control and monitoring, and
• Remote control lockout via onboard jumper.

10 2020ADC — Instruction Manual
Installation
Installation
Installation of the 2020ADC module is a process of:
• Placing the passive rear module in a rear frame slot,
• Placing the media module in the corresponding front slot, and
• Cabling and terminating signal ports.
The 2020ADC module can be plugged in and removed from a 2000 Series
frame with power on. When power is applied to the module, LED indica-
tors reflect the initialization process (see Power Up on page 14).
Module Placement in the 2000 Frame
There are twelve slot locations in both the front and rear of a 3RU frame to
accommodate 2000 Series modules. The 2020ADC consists of a two module
set with a front media module and a passive rear module that can be
plugged into any of the 12 frame slots. Each 2020ADC front media module
plugs into the front of the 2000 frame mid-plane. The passive rear module
plugs into the corresponding rear slot to provide the input and output
interface connectors.
To install a 2020ADC module set in the frame:
1. Locate a vacant slot in the rear of the 3 RU frame (Figure 1).
Figure 1. 3 RU Frame, Rear View
Mid-frame motherboard
with power and
communication buses
Rear media module slots 1 – 6Rear media module slots 7 – 12
8025-04r1