Dolby Laboratories DM100 Manuale utente

DM100 User’s Manual

Dolby Laboratories, Inc.

Corporate Headquarters

Dolby Laboratories, Inc.

100 Potrero Avenue

San Francisco, CA 94103-4813

Telephone 415-558-0200

Facsimile 415-863-1373

www.dolby.com

European Headquarters

Dolby Laboratories

Wootton Bassett

Wiltshire, SN4 8QJ, England

Telephone (44) 1793-842100

Facsimile (44) 1793-842101

DISCLAIMER OF WARRANTIES: Equipment manufactured by Dolby Laboratories is

warranted against defects in materials and workmanship for a period of one year from the date

of purchase. All warranties, conditions, or other terms implied by statute are excluded to the

fullest extent allowed by law.

LIMITATION OF LIABILITY: It is understood and agreed that Dolby Laboratories’

liability whether in contract, in tort, under any warranty, in negligence or otherwise shall not

exceed the cost of repair or replacement of the defective components and under no

circumstances shall Dolby Laboratories be liable for incidental, special, direct, indirect, or

consequential damages (including but not limited to damage to software or recorded audio or

visual material), or loss of use, revenue, or profit even if Dolby Laboratories or its agents have

been advised, orally or in writing, of the possibility of such damages.

Dolby, the double-D symbol, AC-3, and Surround EX are trademarks of Dolby Laboratories. Toslink

is a trademark of Toshiba Corporation. Windows is a trademark of Microsoft Corporation.

Part No. 91751

S00/13416

DM100 User’s Manual

Table of Contents

Note: References to the front-panel buttons are shown using brackets

throughout this manual (e.g., “[STATUS]”). References to multiple button

combinations means sequences, not simultaneous button presses. Press the

first button, release, and press the next button.

Chapter 1 Introduction

1.1 About the DM100..................................................... 1-1

Chapter 2 Getting Started

2.1 Power........................................................................ 2-1

Battery Installation........................................ 2-1

[Power] Button.............................................. 2-2

Battery Low LED.......................................... 2-2

Auto-Power Off ............................................ 2-2

External DC Power Supply........................... 2-3

2.2 Rear Belt Clip/Stand................................................. 2-3

2.3 Inputs........................................................................ 2-4

Dolby Digital ................................................ 2-4

Dolby E......................................................... 2-4

PCM.............................................................. 2-4

Other ............................................................. 2-4

Video............................................................. 2-4

2.4 Outputs..................................................................... 2-5

Headphone Output........................................ 2-5

Speaker Output ............................................. 2-5

2.5 Hookup..................................................................... 2-6

2.6 Quick Start ............................................................... 2-7

Making Your First Reading.......................... 2-7

Generating a Bitstream ................................. 2-7

DM100 User’s Manual

iii

Chapter 3 Operation: Status Mode

3.1 Main Status Screen...................................................3-1

Dolby E.........................................................3-2

Dolby Digital ................................................3-3

PCM..............................................................3-4

3.2 The Status Menus..................................................... 3-5

3.2.1 Dolby E Metadata Input Menu......................3-6

Px Prog Desc.................................................3-7

Px Dialogue Lev............................................3-7

Px Channel Mode.......................................... 3-8

Px LFE Channel............................................3-8

Px Bitstrm Mode...........................................3-8

Px Line Mode Pro......................................... 3-9

Px RF Mode Pro............................................ 3-9

Px RF Ov Protect .......................................... 3-9

Px Center Dwnmx.........................................3-10

Px Srnd Dwnmx............................................ 3-10

Px Dolby Srnd...............................................3-10

Px Mixing Level............................................3-11

Px Room Type ..............................................3-11

Px Copyright .................................................3-11

Px Orig Bitstrm.............................................3-11

Px Extnd Bitstrm........................................... 3-12

Px DC Filter..................................................3-13

Px Lowpass Filt.............................................3-13

Px LFE Filter................................................. 3-13

Px Srnd 3dB Attn..........................................3-13

Px Srnd Ph Shift............................................3-13

Px Begin Gain............................................... 3-13

Px End Gain..................................................3-13

DM100 User’s Manual

3.2.2 Dolby Digital Metadata Input Menu............. 3-14

DD Dialogue Lev.......................................... 3-15

DD Channel Mode........................................ 3-15

DD LFE Channel.......................................... 3-15

DD Data Rate................................................ 3-16

DD Bitstrm Mode ......................................... 3-16

DD Line Mode Pro ....................................... 3-17

DD RF Mode Pro.......................................... 3-17

DD Center Dwnmx....................................... 3-17

DD Srnd Dwnmx.......................................... 3-18

DD Dolby Srnd............................................. 3-18

DD Mixing Level.......................................... 3-18

DD Room Type............................................. 3-19

DD Copyright ............................................... 3-19

DD Orig Bitstrm ........................................... 3-19

DD Extnd Bitstrm......................................... 3-20

DD Dual Mono MD...................................... 3-21

DD Format.................................................... 3-22

DD Sample Rate ........................................... 3-22

DD Bitstream ID........................................... 3-22

DD Stream # ................................................. 3-23

3.2.3 AES3 Status Menu........................................ 3-24

3.2.4 Input Level Menu.......................................... 3-25

3.2.5 Generator Status Display .............................. 3-26

3.2.6 Video Reference Status Display................... 3-26

3.2.7 Timecode Status Display .............................. 3-27

3.2.8 Error Statistics Menu .................................... 3-28

3.2.9 DM100 Firmware Version............................ 3-28

DM100 User’s Manual

Chapter 4 Operation: Setup Mode

The Setup Menus..............................................................4-1

4.1 Monitor Control........................................................4-2

4.2 Gen Control..............................................................4-4

4.3 AES3 Output ............................................................4-6

4.4 User Presets..............................................................4-7

4.5 I/O Control ...............................................................4-8

4.6 System Settings ........................................................4-9

Chapter 5 Reference Information

5.1 Data Transfer............................................................5-1

Test Bitstream Loading................................. 5-1

Data Logging.................................................5-1

Firmware Upgrade ........................................5-2

Data Transfer Error Messages: .....................5-2

5.2 Unit Reset................................................................. 5-3

Restore Default Settings................................5-3

Hardware Reset............................................. 5-3

5.3 Connector Pinout Information.................................. 5-4

RS-232 Serial Port....................................................5-4

5.3.2 XLR Connectors ...........................................5-4

5.3.3 Headphone Connector...................................5-4

5.4 DM100 Specifications..............................................5-5

5.5 System Block Diagram............................................. 5-5

DM100 User’s Manual

1-1

Chapter 1

Introduction

1.1 About the DM100

The Dolby DM100 is a hand-held diagnostic tool that can

monitor or generate Dolby Digital, Dolby E, and PCM

bitstreams. The unit allows audio systems integrators and service

engineers to quickly test the integrity and composition of these

signals throughout a facility. The DM100 is intended for use in

broadcast, cable, DBS, and post-production facilities, as well as

DVD mastering and home theater installation.

The DM100 accepts input signals via XLR, BNC, and Toslink™

connectors. The unit identifies the format of the input signal and

activates the appropriate built-in decoder. The decoded analog

signal, sent to a standard 1/8-inch stereo headphone jack, can be

switched to monitor any two decoded channels, while a small

built-in speaker can monitor the sum of any channel pair. A

front-panel LCD displays Dolby Digital and Dolby E metadata

information. Six front-panel LEDs indicate critical bitstream and

system status information.

A set of Dolby Digital, Dolby E, and PCM test bitstreams is

stored in internal, nonvolatile RAM, and can be changed in the

field via software download. The selected test bitstream is

produced simultaneously on all output connectors. The unit can

receive and decode an input signal while generating a test

bitstream. The DM100 also features a pass-through mode that

allows modification of the input signal’s AES channel status bits

before passing the signal to the output connectors. (The input

signal can be monitored simultaneously.)

DM100 User’s Manual

2-1

Chapter 2

Getting Started

2.1 Power

The DM100 is powered by four standard AA 1.5 V batteries or

from an external 6V, 800 mA DC power supply via the power

input connector. The internal batteries are disconnected when

the external DC power supply is used.

Battery Installation

Push the cover as

shown, and slide

out.

Insert four AA

batteries with

alternating positive

terminals, and

replace the cover.

DM100 User’s Manual Getting Started

2-2

Dead Battery…

[Power] Button

To turn on the DM100, press and hold the [Power] button down

for two seconds. The display reads as shown for approximately

one second while a self-test diagnostic runs.

The power-on process ends with the DM100 operating in the

last-used state. If the diagnostic test fails, the Error LED lights

and an error message is displayed.

To turn off the DM100, press [Power] again. The display reads

“Power Off,”and the unit shuts off.

Battery Low LED

The front-panel battery LED flashes when the

battery voltage drops below 4.3 V. If the

battery voltage drops below 4.1 V, the

DM100 display reads “Dead Battery”and the

unit shuts off.

Auto-Power Off

When the DM100 is powered from the batteries (external power

supply not connected), the unit can be set to turn itself off after a

selectable number of minutes with no user activity (5, 10, 15, or

30 minutes). This feature can be disabled. The factory default

setting is 15 minutes.

The wait time is set from the Setup menu under System Settings,

Power Management. See section 4.6.

Model DM100

Unit Name

Power Off…

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