Dolby Laboratories DM100 User Manual

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DM100 Bitstream Analyzer

Volume

V Ref

V Ref

DolbyDolbyPCM

Digital E

Enter

Esc

Error

Power

Status

Mon

Setup

Gen

Shift

LCD

P1 P2

P3

P4

Bitstream Analyzer

Model DM100Model DM100

RS-232

Mon

Gen

Esc

Power

Setup

Up/Down Buttons

Hold for two seconds to
turn DM100 on or off

Shift [LCD]

Momentarily enables or
disables LCD backlight

Shift [P1-P4]

Selects user-assigned custom
presets

Status

Switches display to top-level
status menu; shows details of
input or output bitstream

Resets internal settings to
quickly allow monitoring of
input bitstreams. Does not
change output mode.

Turns on generator, and displays
bitstream select menu; pressing
again generates next bitstream
in list

Switches display to
top-level setup menu;
use to set DM100 options

Moves display up one level
in menu tree, or aborts
current operation

Scroll through status or
setup menu trees; changes
settings

Enter

Moves down one level in
current menu item, or selects
currently displayed option;
also used to switch bottom
line of LCD between graphic
or numeric display from certain
status menu items

Volume Buttons

Control level of speaker
or headphone output (speaker
is disabled when headphone
is used)

LEDs

Error

PCM, Dolby Digital,
Dolby E

V Ref

Flashing Red: Low battery

Flashing Red:
Red:

Error counter changed

Error condition
See Error Stats menu, Section 3.2.8
for these functions

Green: Receiving indicated input
signal

Green:

Off:

Flashing Green:

A valid video reference
input signal is present, and unit
is in a mode that requires it

Current mode does not require

a video reference

Current mode requires
a video reference and it is invalid or
not present

Interface
Connector

For test bitstream uploads,
data logging, and firmware
upgrades

Flashing Green:

Flashing Green:

(equal on/off)
Decode Format setting does
not match the input

(long on)
AES3 channel status is being modified
in Passthrough Mode. See Section 4.3.

Dolby® DM100 User’s Manual

i

Dolby Laboratories, Inc.

Corporate Headquarters

Dolby Laboratories, Inc.

100 Potrero Avenue
San Francisco, CA 94103-4813
Telephone [phone]
Fax [phone]

www.dolby.com

European Headquarters

Dolby Laboratories, Inc.

Wootton Bassett
Wiltshire, SN4 8QJ, England
Telephone [phone]
Fax [phone]

Dolby and the double-D symbol are registered trademarks of Dolby Laboratories. Surround EX is a
trademark of Dolby Laboratories. Toslink is a trademark of Toshiba Corporation. Windows is a
registered trademark of Microsoft Corporation. All other trademarks remain the property of their
respective owners.
 2003 Dolby Laboratories Inc. All rights reserved.
S03/13416/14616 Issue 2 Part No. 91751

Dolby® DM100 User’s Manual

iii

Table of Contents

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

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

2.7 Advanced Features ................................................2-8

Measuring the Latency of Equipment ........2-8

Measuring Audio/Video Frequency Drift .. 2-8

Dolby® DM100 User’s Manual

iv

Chapter 3 Operation: Status Mode

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

Dolby

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

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

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

NULL Data ................................................ 3-4

Pause Data.................................................. 3-4

Data Type X............................................... 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

Dolby® DM100 User’s Manual

v

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.......................................3-26

3.2.5 Generator Status Display............................3-27

3.2.6 Video Reference Status Display.................3-28

3.2.7 Timecode Status Display............................3-29

3.2.8 Error Stats Menu ........................................3-30

3.2.9 DM100 Firmware Version .........................3-31

Dolby® DM100 User’s Manual

vi

Chapter 4 Operation: Setup Mode

Introduction ................................................................... 4-1

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

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

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

4.4 User Presets ........................................................... 4-8

4.5 I/O Control ............................................................ 4-9

4.6 System Settings ..................................................... 4-10

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

5.3.1 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.......................................... 5-2

Dolby® 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 postproduction 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 simultaneously
generating a test bitstream. The DM100 also features a pass­through 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.)

The DM100 also includes system level tests, such as latency
measurements, and the ability to check the clock
synchronization between audio and video signals.

Dolby® 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 in
the direction shown
to slide it out.

Insert four AA
batteries,
alternating the
positive and
negative terminals,
and replace the
cover.

Dolby® 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.

Note: Any changes made to the system settings may be lost if the unit is

powered off by unplugging the external power supply, unless batteries
are installed.

Battery Low LED

The front-panel battery LED flashes when the
batteries are nearly discharged. If the battery
voltage drops below a usable level, the
DM100 display reads “Dead Battery” and the
unit shuts off.

Auto-Power Off

When the DM100 is powered from 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 for more information.

Model DM100

Unit Name

Power Off…

Dolby® DM100 User’s Manual Getting Started

2-3

External DC Power Supply

When powered from the external power supply, the Power
Management setting is ignored and the unit remains switched on.
The LCD backlight and keypad backlights are also enabled,
overriding the LCD Backlight setting. See Section 4.6 for more
information.

2.2 Rear Belt Clip/Stand

The pull-out clip on the rear of the DM100 can be used as a
handy belt clip or a stand. Raise the clip by following these two
steps:

1. Lift to release

2. Pull up

2

1

2

1

1 LIFT TO UNLATCHLIFT TO UNLATCH

2 PULL OUTPULL OUT

Dolby® DM100 User’s Manual Getting Started

2-4

2.3 Inputs

Each input connector (XLR, BNC, or Toslink™) is active when
specifically selected, or, if the input selection is set to autodetect,
the first input with a valid AES3 signal becomes the active
input. See Section 4.5 for setting the input select function. See
the specifications in Section 5.4 for details on supported sample
rates, impedances, and more.

The digital input format can be Dolby

®

Digital, Dolby E, or

PCM.

Dolby Digital

The DM100 accepts 16- and 32-bit Dolby Digital bitstreams. It
also accepts AES3 data that contains multiple Dolby Digital
bitstreams (i.e., one 16-bit mode bitstream in each AES3
channel).

Dolby E

The DM100 accepts 16-, 20-, and 24-bit Dolby E bitstreams at
NTSC (29.97 fps), PAL (25 fps), 23.98 fps, 24 fps, and 30 fps
rates.

PCM

If the input signal does not contain a header indicating that a pre­encoded bitstream is being received, the DM100 assumes the
input signal is PCM audio.

Other

The DM100 also accepts non-audio data over AES3. In this
case, the LCD indicates that data is being received and the audio
output mutes.

Video

The unit can use an analog composite NTSC or PAL black burst
reference video signal for signal generation, via the Ref Video
RCA connector. The input is internally terminated at 75Ω.

Dolby® DM100 User’s Manual Getting Started

2-5

2.4 Outputs

The XLR and BNC output connectors are always active. The
Toslink connector is enabled when it is selected.

The digital output signal can be:

Pass-through Dolby Digital, Dolby E, or PCM.

The output clock is locked to the digital input.

Or

An internally generated Dolby Digital, Dolby E, or PCM test
bitstream.

The output clock can be locked to an internal 48 kHz clock, a digital input
signal, or to 48 kHz derived from the video reference input. See Section 4.5
for more information.

Headphone Output

The headphone output is used to monitor the decoded
Dolby Digital, Dolby E, or PCM signal. Front-panel buttons
adjust the headphone volume.

Speaker Output

The speaker output is used to monitor the decoded Dolby
Digital, Dolby E, or PCM signal when headphones are not being
used. The signal is a mono version of the headphone output.
Front-panel buttons adjust the speaker volume.

Note: When listening to Dolby Digital bitstreams on the speaker output, RF

Mode compression is always applied, regardless of the
DD Compression setting in the Monitor Control Setup menu.
See Section 4.1 for more information.

Dolby® DM100 User’s Manual Getting Started

2-6

2.5 Hookup

Figure 2-1 shows the locations for connecting components to the
DM100.

Figure 2-1 Connections

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

throughout this manual (e.g., “[Status]”). References to multiple-button
combinations mean sequences, not simultaneous button presses. Press
the first button, release, and then press the next button.

Power Adapter

Part Numbers: 54065 USA

54066 UK
54067 Europe
54068 Australia

RCA F to BNC M

Part Number 70218

Ref Video In
BNC F to RCA M

Part Number 70217

Toslink Cable

Dolby® DM100 User’s Manual Getting Started

2-7

2.6 Quick Start

The DM100 is designed to be easy and intuitive to use. Follow
these simple procedures to begin taking your first readings and
generating your first test streams.

Making Your First Reading

1. Turn on the unit by pressing [Power].

2. Connect the input signal to the appropriate connector.

3. Press [Mon]. This resets all the internal monitoring setup

functions to the defaults.

The LEDs should display the signal type received, and the
display shows information about the incoming signal. If you
cannot see this information, press [Status], then use [Enter],
[Esc], and the [Up/Down] buttons to navigate through the status
menus to view information about the incoming signal. See
Section 3.2 for additional information.

Adjust the audio level with the dedicated [Volume] buttons.

Generating a Bitstream

1. Press [Gen] once. This turns the generator on and outputs a

PCM test signal.

2. To select other test streams, continue to press [Gen].

Different clock sources can be used for the generator; these can
be selected in the Gen Clock Source menu:
Setup / I/O Control / Gen Clock Source
See Section 4.5 for more information.

To read the current status of the generator, press [Status] and
navigate using the [Down] button until Generator Enter to
View is displayed. Press [Enter] to see the current settings. See
Section 3.2.5 for more information.

You can even connect the output of the DM100 to the input.
Doing this allows you to listen to the test stream and view all of
the streams’ settings.

Dolby® DM100 User’s Manual Getting Started

2-8

2.7 Advanced Features

Measuring the Latency of Equipment

The DM100 can be used to measure the latency of other audio
equipment. At user-defined intervals, the DM100 generates a
short burst of white noise, then measures the time taken for the
signal to return.

Set the DM100 to measure latency by following these steps:

1. Go to the Gen Control / Output Mode setup menu, and

select Latency Test (see Section 4.2).

2. Connect the Digital Out from the DM100 to the

equipment to be measured.

3. Connect the output of the equipment to be measured to

the DM100’s Digital Input.

Different clock sources used for the generator can be set in the
I/O Control / Gen Clock Source setup menu (see Section 4.5).
The time interval between the noise bursts can be set in the
Gen Control / Noise Burst Rate setup menu (see Section 4.2).

To read the measured latency, press [Status] and navigate using
the [Down] button until Generator ENTER to View is
displayed. Press [Enter] to display the measured latency in either
AES samples or milliseconds (see Section 3.2.5).

Measuring Audio/Video Frequency Drift

The DM100 determines if an AES digital audio or reference
signal is frequency-locked to a video black burst reference
signal. The unit locks to the video reference, then measures the
frequency difference between the Digital In input and the video
reference.

Dolby® DM100 User’s Manual Getting Started

2-9

Set the unit to measure frequency drift as follows:

1. Go to the Gen Control / Output Mode setup menu, and

select A/V Freq Drift (see Section 4.2).

2. Connect a 29.97 or 25 fps video reference to DM100’s

V Ref input.

3. Connect the test AES signal to the DM100’s Digital In.

Read the measured frequency drift between the AES and video
signals by pressing [Status] and then navigating using the
[Down] button until Generator / Enter to View is displayed.
Press [Enter] to read the measured frequency drift (see
Section 3.2.5). The display indicates frequency difference in
AES samples: a positive number indicates the AES input signal
is faster than the video reference. Therefore, if the two signals
are locked, the display will read “0 samples.” Pressing [Enter]
resets the counter.

Modifying the Pass Through Output Signal

The DM100 can be used to repair improperly authored audio
streams. When in Pass Through mode, the DM100 can modify
channel status bits in the first and third bytes of the AES3 signal.
In addition, the output audio channels can be skewed or swapped
to correct improper channel alignment (see Section 4.5).

Dolby® DM100 User’s Manual

3-1

Chapter 3

Operation: Status Mode

After power-on, the DM100 defaults to Status mode, with the
top-level main status screen displayed. Status mode is used for
displaying, monitoring, and analyzing the input bitstream.

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

throughout this manual (e.g., “[Status]”). References to multiple-button
combinations mean sequences, not simultaneous button presses. Press
the first button, release, and then press the next button.

3.1 Main Status Screen

The main status screen is the top level of the status menu tree. It
displays one of the following possible combinations of
information. The display shown below gives a typical example:

The following pages describe the information displayed on the
second line for each type of input data.

Dolby Digital B

3/2L 448kbps

Active Input Connector

A

Set to Autodetect

B

Set to BNC

X

Set to XLR

O

Set to Optical

Input Data Type
Dolby E

Valid Dolby E bitstream

Dolby Digital

Valid 32-bit Dolby Digital
bitstream

DD/PCM

Valid 16-bit Dolby Digital
packed in Left channel

PCM/DD

Valid 16-bit Dolby Digital
packed in Right channel

DD/DD

Two valid Dolby Digital
bitstreams

PCM

Valid PCM bitstream

NULL data

NULL data type bitstream

Pause data

Pause data type bitstream

Data Type X

Other data type bitstream

No Input

No incoming bitstream

Dolby® DM100 User’s Manual Operation: Status Mode

3-2

Dolby E

When the incoming bitstream is Dolby

®

E, the following

information will be displayed:

Dolby E B

5.1+2 24bit

16bit

Bit Depth

20bit
24bit

Program Configuration

5.1+2

5.1+2x1
4+4
4+2x2
4+2+2x1
4+4x1
4x2
3x2+2x1
2x2+4x1
2+6x1
8x1

5.1
4+2
4+2x1
3x2
2x2+2x1
2+4x1
6x1
4
2+2
2+2x1
4x1

7.1

7.1scrn

Invalid Dolby E program

configuration

*******

Dolby® DM100 User’s Manual Operation: Status Mode

3-3

Dolby Digital

When the incoming bitstream is Dolby Digital, the following
information will be displayed:

PCM

When the incoming bitstream is PCM, and the DM100 has
locked to it, the following information will be displayed:

56kbps
64kbps
80kbps
96kbps
112kbps
128kbps
160kbps
192kbps
224kbps
256kbps
320kbps
384kbps
448kbps
512kbps
576kbps
640kbps

“L”means the LFE–
enabled bit is set in the
bitstream

Dolby Digital B

3/2L 448kbps

1+1
1/0
2/0
3/0
2/1
3/1
2/2
3/2
3/0L
2/1L
3/1L
2/2L
3/2L

PCM B

44.1 kHz

48 kHz

44.1 kHz
32 kHz

Unknown Rate

Dolby® DM100 User’s Manual Operation: Status Mode

3-4

NULL Data

When the incoming bitstream is Null data, as defined in the
IEC 61937 or SMPTE 337M standards, the following screen is
displayed:

Pause Data

When the incoming bitstream is Pause data, as defined in the
IEC 61937 standard, the following screen is displayed:

Data Type X

When the data type of the incoming bitstream is not recognized
as one of the preceeding types, the following screen is displayed:

NULL data

PAUSE data

Data Type X

Dolby® DM100 User’s Manual Operation: Status Mode

3-5

3.2 The Status Menus

From the top-level main Status display described above, you can
step through the status menus by pressing the [Up] or [Down]
button. Each menu below the top main Status display is
described in the following manual sections.

Top level Status display

(A typical display is shown.)

Dolby E metadata menu

Dolby Digital metadata menu

AES3 status menu

Input level menu

Bitstream generator status display

Video reference display

Timecode/delay display

Error status menu

DM100 firmware version

Dolby E A

5.1+2 24bit

[Down]▐

Dolby E MD

ENTER to View

[Down]▐

Dolby Digital MD

ENTER to View

[Down]▐

AES3 Status

ENTER to View

[Down]▐

Input Level

ENTER to View

[Down]▐

Generator

ENTER to View

[Down]▐

Video Ref

29.97 fps

[Down]▐

Timecode 29 Dly
00:00:00:00 N/A

[Down]▐

Error Stats

ENTER to View

[Down]▐

Firmware Version

2.0.0.0

Scroll with the [Up]/[Down] buttons

Dolby® DM100 User’s Manual Operation: Status Mode

3-6

3.2.1 Dolby E Metadata Input Menu

After pressing [Enter] to view this menu, press the [Down] or
[Up] button to select the submenu options you wish to display.

Dolby E MD

ENTER to View

“Px” represents the selected program number, where x is a
number between 1 and 8. Valid program numbers depend on the
Dolby E program configuration. For example, 5.1+2 is two
programs; therefore, only P1 and P2 are valid.

Each metadata program parameter selection is described in the
following sections.

DE Prog Config

[Down]▐

Dolby E Prog 1

ENTER to View

[Down]▐

Dolby E Prog 2—8

(depending on Dolby E
program configuration)

[Down]▐

DE Bit Depth

16, 20, or 24Bit

[Down]▐

DE Frame Rate

29.97 fps

[Down]▐

DE Position

Line 14

See page 3-2 for the list of possible
program configurations displayed.

23.98 fps
24 fps

25 fps [PAL]

29.97 fps [NTSC]
30 fps
50 fps

59.94 fps
60 fps

****************

N/A

Displays the video line number
where the Dolby E data begins.
Refer to SMPTE-170M and ITU-R
BT.470-6 for video line structure.

Line xxx

Dolby E input not present or DM100
decode format is not Dolby E.

blank

Video reference not present.

N/A

Video reference not equal to Dolby E
frame rate.

Line

***

During an audio-follow-video switch, the Dolby E frame is in
danger of corruption if the “line” value displayed in this status
screen is less than 11 or greater than 30 for 29.97 fps (NTSC),
or less than 7 or greater than 35 for 25 fps (PAL).

Px Prog Desc

[Down]▐

Px Dialogue Lev

[Down]▐

Px Channel Mode

[Down]▐

Px LFE Channel

[Down]▐

Px Bitstrm Mode

[Down]▐

Px Line Mode Pro

[Down]▐

Px RF Mode Pro

[Down]▐

Px RF Ov Protect

[Down]▐

Px Center Dwnmx

[Down]▐

Px Srnd Dwnmx

[Down]▐

Px Dolby Srnd

[Down]▐

Px Mixing Level

[Down]▐

Px Room Type

[Down]▐

Px Copyright

[Down]▐

Px Orig Bitstrm

[Down]▐

Px Extnd Bitstrm

[Down]▐

Px DC Filter

[Down]▐

Px Lowpass Filt

[Down]▐

Px LFE Filter

[Down]▐

Px Srnd 3dB Attn

[Down]▐

Px Srnd Ph Shift

[Down]▐

Px Begin Gain

[Down]▐

Px End Gain

[Enter]

Dolby® DM100 User’s Manual Operation: Status Mode

3-7

Px Prog Desc

Dolby E program description display:

The DM100 has a 32-character buffer for each program, which
stores the first characters in the description text field for that
program. The display scrolls through the text automatically if the
string is greater than 16 characters.

Px Dialogue Lev

A typical example is shown for the Dolby E Dialogue
Normalization display:

Px Prog Desc

Description text

P2 Dialogue Lev

–27 dB

***************

–1 dB
–2 dB
–3 dB

•

•

•

–31 dB

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-8

Px Channel Mode

A typical example is shown for the Dolby E Channel Mode
display:

Px LFE Channel

Px Bitstrm Mode

A typical example is shown for the Dolby E Bitstream Mode
display:

Main Complete

Main M&E

Assc Visual Imp

Assc Hear Imp
Assc Dialogue

Assc Commentary

Assc Emergency
Assc Voice Over
Main Sv Karaoke

N/A

P2 Bitstrm Mode
Main Complete

1+1

1/0 Mono

2/0 Stereo

3/0

2/1
3/1
2/2
3/2
N/A

P2 Channel Mode

2/0 Stereo

Disabled

Enabled

N/A

P2 LFE Channel

Disabled

Dolby® DM100 User’s Manual Operation: Status Mode

3-9

Px Line Mode Pro
Px RF Mode Pro

The Dolby E Line Mode and RF Mode Profile program
parameters display the same second-line display.

A typical example is shown for the RF Mode Profile display:

Px RF Ov Protect

RF overmodulation protection.

None

Film Standard

Film Light

Music Standard

Music Light

Speech

Invalid

N/A

If actual dynamic range
control data is present:

P2 RF Mode Pro
Music Standard

±xx dB

▐

Press the [Enter] button
to toggle between a
numeric display and a bar
graph level display

▐

J J J | J J J

–48 dB 0 +48 dB
–24 dB 0 +24 dB

RF:

Line:

If dynamic range control
presets are present:

Disabled

Enabled

N/A

P2 RF Ov Protect

Disabled

Dolby® DM100 User’s Manual Operation: Status Mode

3-10

Px Center Dwnmx

A typical example is shown for the Dolby E Center Downmix
display:

Px Srnd Dwnmx

A typical example is shown for the Dolby E Surround Downmix
display:

Px Dolby Srnd

A typical example is shown for the Dolby E Surround Mode
display:

0.707 (-3.0 dB)

0.596 (-4.5 dB)

0.500 (-6.0 dB)
***************

N/A

P2 Center Dwnmx

0.500 (-6.0 dB)

0.707 (-3.0 dB)

0.500 (-6.0 dB)
0 (-999 dB)

***************

N/A

P2 Srnd Dwnmx

0.707 (-3.0 dB)

Not Indicated

Not Dolby Srnd

Dolby Srnd

***************

N/A

P2 Dolby Srnd
Not Indicated

Dolby® DM100 User’s Manual Operation: Status Mode

3-11

Px Mixing Level

A typical example is shown for the Dolby E Mixing Level
display:

Px Room Type

A typical example is shown for the Dolby E Room Type display:

Px Copyright
Px Orig Bitstrm

A typical example is shown for the Dolby E Copyright display.
The Original Bitstream program parameters display the same
second line:

P2 Mixing Level

80 dB

80 dB
81 dB
82 dB

•

•

•

111 dB

Does Not Exist

N/A

P2 Room Type

80 dB

Not Indicated

Large
Small

****************

Does Not Exist

N/A

P2 Copyright

No

No
Yes
N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-12

Px Extnd Bitstrm

A typical example is shown for the Extended Bitstream metadata
display. Other possibilities are also shown:

Px Extnd Bitstrm
ENTER to view

P2 Pref Dwnmx

Lt/Rt

Px Pref Dwnmx

[Down]▐

Px Lt/Rt C Dwnmx

[Down]▐

Px Lt/Rt S Dwnmx

[Down]▐

Px Lo/Ro C Dwnmx

[Down]▐

Px Lo/Ro S Dwnmx

[Down]▐

Px Dolby Srnd EX

[Down]▐

Px Dolby H Mode

[Down]▐

Px A/D Conv Type

1.414 (+3.0 dB)

1.189 (+1.5 dB)

1.000 (+0.0 dB)

Dolby E Downmix

0.841 (–1.5 dB)

Level Status

0.707 (–3.0 dB)

0.595 (–4.6 dB)

0.500 (–6.0 dB)
0 (–999 dB)

Not Active

Does Not Exist

N/A

Not Indicated
Lt/Rt

Dolby E Preferred

Lo/Ro

Downmix Status

*****************
Does Not Exist
N/A

Not Indicated

Dolby E

Not Srnd EX

Surround EXTM

Dolby Srnd EX

Status

****************

Not Active

Does Not Exist

N/A

Dolby E

Standard

A/D Converter

HDCD

Type

Does Not Exist
N/A

Not Indicated

Dolby E

Disabled

Headphone

Enabled

Mode

****************

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-13

Px DC Filter
Px Lowpass Filt

Px LFE Filter
Px Srnd 3dB Attn
Px Srnd Ph Shift

When any of these Dolby E metadata programs is selected, the
DM100 displays the same information as shown in the example.
A typical example is shown for the Dolby E Lowpass Filter
display.

Px Begin Gain
Px End Gain

A typical example is shown for the Dolby E Begin Gain and End
Gain display:

Disabled

Enabled

N/A

P2 Lowpass Filt

Disabled

Px Begin Gain
ENTER to view

P2 LFE Begin Gain
+12.34 dB

On Programs 1, 2, 3, 4

Px L Bgn Gain

[Down]▐

On Programs 1–8

Px C Bgn Gain

[Down]▐

On Program 1

Px Ls Bgn Gain

[Down]▐

On Programs 1, 2, 3, 4

Px R Bgn Gain

[Down]▐

On Program 1

Px LFE Bgn Gain

[Down]▐

On Program 1

Px Rs Bgn Gain

[Down]▐

On Programs 1,2

Px S Bgn Gain

Gain

± yy.yy dB
–inf
N/A

“N/A” indicates Dolby E input is not
present or DM100 decode format is not
Dolby E.

Dolby® DM100 User’s Manual Operation: Status Mode

3-14

3.2.2 Dolby Digital Metadata Input Menu

After pressing [Enter] to select this function, press the [Down]
or [Up] button to select the parameter you wish to display.

Dolby Digital MD

ENTER to View

Each Dolby Digital metadata parameter display is described in
the following manual sections.

DD Dialogue Lev

[Down]▐

DD Channel Mode

[Down]▐

DD LFE Channel

[Down]▐

DD Data Rate

[Down]▐

DD Bitstrm Mode

[Down]▐

DD Line Mode Pro

[Down]▐

DD RF Mode Pro

[Down]▐

DD Center Dwnmx

[Down]▐

DD Srnd Dwnmx

[Down]▐

DD Dolby Srnd

[Down]▐

DD Mixing Level

[Down]▐

DD Room Type

[Down]▐

DD Copyright

[Down]▐

DD Orig Bitstrm

[Down]▐

DD Extnd Bitstrm

[Down]▐

DD Dual Mono MD

[Down]▐

DD Format

[Down]▐

DD Sample Rate

[Down]▐

DD Bitstream ID

[Down]▐

DD Stream #

Dolby® DM100 User’s Manual Operation: Status Mode

3-15

DD Dialogue Lev

A typical example is shown for the Dolby Digital Dialogue
Normalization Status display:

DD Channel Mode

A typical example is shown for the Dolby Digital Channel Mode
display:

DD LFE Channel

A typical example is shown for the Dolby Digital LFE Status
display:

DD Dialogue Lev

–27 dB

***************

–1 dB
–2 dB
–3 dB

•

•

•

–31 dB

N/A

DD Channel Mode

2/0 Stereo

1+1

1/0 Mono

2/0 Stereo

3/0
2/1
3/1
2/2
3/2
N/A

DD LFE Channel

Disabled

Disabled

Enabled

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-16

DD Data Rate

A typical example is shown for the Dolby Digital Data Rate
display:

DD Bitstrm Mode

A typical example is shown for the Dolby Digital Bitstream
Mode display:

DD Bitstrm Mode

Main Complete

Main Complete

Main M & E

Assc Visual Imp

Assc Dialogue

Assc Commentary

Assc Emergency
Assc Voice Over
Main Sv Karaoke

N/A

“N/A” indicates that a Dolby Digital input is not
present, or the DM100 decode format is not
Dolby Digital.

DD Data Rate

448 kbps

56 kbps
64 kbps
80 kbps

96 kbps
112 kbps
128 kbps
160 kbps
192 kbps
224 kbps
256 kbps
320 kbps
384 kbps
448 kbps
512 kbps
576 kbps
640 kbps

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-17

DD Line Mode Pro
DD RF Mode Pro

The Dolby Digital Line Mode and RF Mode Profile parameters
use the same display style.

A typical example is shown for the RF Mode Profile display:

DD Center Dwnmx

A typical example is shown for the Dolby Digital Center
Downmix display:

If compre or dynrnge = 0,
the level displayed is 0.
If compre or dynrnge = 1,
The level displayed is the
decoded compre or dynrnge
value from the metadata.

DD RF Mode Pro

±xx dB

±xx dB

▐

Press [Enter] to toggle
between a numeric
display and a bar graph
level display

▐

J J J | J J J

–48 dB 0 +48 dB
–24 dB 0 +24 dB

Rf:

Line:

DD Center Dwnmx

0.707 (–3.0 dB)

0.707 (-3.0 dB)

0.596 (-4.5 dB)

0.500 (-6.0 dB)
***************

Not Active

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-18

DD Srnd Dwnmx

A typical example is shown for the Dolby Digital Surround
Downmix display:

DD Dolby Srnd

A typical example is shown for the Dolby Digital, Dolby
Surround Mode display:

DD Mixing Level

A typical example is shown for the Dolby Digital Mixing Level
status display:

DD Srnd Dwnmx

0.707 (-3.0 dB)

0.707 (-3.0 dB)

0.500 (-6.0 dB)
0 (-999 dB)

***************

Not Active

N/A

DD Dolby Srnd
Not Indicated

Not Indicated

Not Dolby Srnd

Dolby Srnd

***************

Not Active

N/A

DD Mixing Level

80 dB

80 dB
81 dB
82 dB

•

•

•

111 dB

Does Not Exist

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-19

DD Room Type

A typical example is shown for the Dolby Digital Room Type
display:

DD Copyright
DD Orig Bitstrm

A typical example is shown for the Dolby Copyright status
display. The Original Bitstream program parameters display the
same second line:

DD Room Type

Large

Not Indicated

Large

Small
**************
Does Not Exist

N/A

DD Copyright

Yes

No
Yes
N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-20

DD Extnd Bitstrm

A typical example is shown for the Extended Bitstream
information display. Other possibilities are shown:

Px Extnd Bitstrm
ENTER to view

DD Pref Dwnmx

Lt/Rt

DD Pref Dwnmx

[Down]▐

DD Lt/Rt C Dwnmx

[Down]▐

DD Lt/Rt S Dwnmx

[Down]▐

DD Lo/Ro C Dwnmx

[Down]▐

DD Lo/Ro S Dwnmx

[Down]▐

DD Dolby Srnd EX

[Down]▐

DD Dolby H Mode

[Down]▐

DD A/D Conv Type

1.414 (+3.0 dB)

1.189 (+1.5 dB)

1.000 (+0.0 dB)

Dolby Digital

0.841 (–1.5 dB)

Downmix Level

0.707 (–3.0 dB)

Status

0.595 (–4.6 dB)

0.500 (–6.0 dB)
0 (–999 dB)

Not Active

Does Not Exist

N/A

Not Indicated
LtRt

Dolby Digital

LoRo

Preferred Downmix

*****************

Status

Does Not Exist
N/A

Not Indicated

Dolby Digital

Not Srnd EX

Surround EX

Dolby Srnd EX

Status

****************

Not Active

Does Not Exist

N/A

Dolby Digital

Standard

A/D Converter

HDCD

Type

Does Not Exist
N/A

Not Indicated

Dolby Digital

Disabled

Headphone

Enabled

Mode

****************
N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-21

DD Dual Mono MD

After pressing [Enter] to select this function, press the [Down]
or [Up] button to select the Dual Mono metadata parameter you
wish to display. A typical example screen is shown:

DD Dual Mono MD
ENTER to view

DM Dialogue Lev

–27 dB

DM Dialogue Lev

[Down]▐

DM Mixing Level

[Down]▐

DM Room Type

[Down]▐

DM RF Mode Pro

[Down]▐

DM Line Mode Pro

80 dB

Dual Mono

81 dB

Mixing Level

82 dB

Status

•

•

111 dB

Does Not Exist

N/A

*****************

–1 dB

Dual Mono

–2 dB

Dialogue

–3 dB

Normalization

•

•

Status

–31 dB

N/A

Not Indicated

Dual Mono

Large

Room Type

Small

Status

****************

Does Not Exist

N/A

If the Dolby Digital bitstream is
not a Dual Mono bitstream, the
level displayed will be 0.

±xx dB

▐

Press [Enter] to toggle
between a numeric
display and a bar graph
level display

▐

J J J | J J J

–48 dB 0 +48 dB
–24 dB 0 +24 dB

RF:

Line:

Dolby® DM100 User’s Manual Operation: Status Mode

3-22

DD Format

A typical example is shown for the Dolby Digital Format status
display:

DD Sample Rate

A typical example is shown for the Dolby Digital Sample Rate
status display:

DD Bitstream ID

A typical example is shown for the Dolby Digital Bitstream ID
status display:

DD Format

Pro 32-bit

Pro 32-bit
Pro 16-bit Ch1
Pro 16-bit Ch2

Pro 16-bit Ch1&2

Consumer

N/A

DD Bitstream ID

8

1—8
N/A

DD Sample Rate

48 kHz

48 kHz

44.1 kHz
32 kHz

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-23

DD Stream #

A typical example is shown for the Dolby Digital Stream
Number status display:

DD Stream #

0

1

•

•

7

N/A

Dolby® DM100 User’s Manual Operation: Status Mode

3-24

3.2.3 AES3 Status Menu

After pressing [Enter] to select this menu, press the [Down] or
[Up] button to select the AES3 parameter you wish to display. A
typical example screen is shown:

AES3 Status

ENTER to view

AES3 Mode

[Down]▐

Audio Mode

[Down]▐

Pro Chan Status

Enter to View

[Down]▐

Continued on next page

Professional

Consumer

N/A

Not Indicated

48 kHz

44.1 kHz
32 kHz

N/A

Audio

Non-Audio

N/A

Locked

Unlocked

N/A

Not Indicated

Reserved (1—3)

No Emphasis

Reserved (5)

50/15-us Emph

J.17 Emph

N/A

AES3 Mode

Professional

Emphasis

[Down]▐

Freq Mode

[Down]▐

Sample Freq

[Down]▐

Channel Mode

[Down]▐

User Bits

[Down]▐
Aux Bits

[Down]▐

Word Length

[Down]▐

Ref Signal

[Down]▐

Reliability

Not Indicated

2-Channel
1-Channel

Primary/Sec

Stereo

User Defined (5)
User Defined (6)

Reserved (7—15)

N/A

None

192-bit Block

Reserved AES18

User Defined

Reserved (4—15)

N/A

20-bit
24-bit

20-bit+Aux

User Defined

Reserved (4—7)

N/A

Not Indicated

23/19 bits
22/18 bits
21/17 bits
20/16 bits
24/20 bits

Reserved (6—7)

N/A

Not a Ref Signal

Grade 1
Grade 2

Reserved

N/A

ABCD

N/A

A = bit 4 of byte 22

B = bit 5 of byte 22
C = bit 6 of byte 22
D = bit 7 of byte 22

Dolby® DM100 User’s Manual Operation: Status Mode

3-25

Continued from previous page

[Down]▐

Cons Chan Status

Enter to View

[Down]▐

Copyright

[Down]▐

Additional Info

[Down]▐

Category Code

[Down]▐

Source Number

[Down]▐

Channel Number

[Down]▐

Sample Freq

[Down]▐

Clock Accuracy

[Down]▐

Word Length

Not Indicated

1—15

N/A

Not Indicated

A (left)

B (right)

C—O
N/A

Yes

No

N/A

2ch No Pre-Emph

Reserved 1—3

2ch 50/15us

Reserved (5—7)

N/A

XX

N/A

XX represents the

category code number

in hex with leading

zeroes. The category

code is extracted from

byte 1 of the channel

status.

32 kHz

44.1 kHz
48 kHz

Reserved (1—3)

Reserved (5—11)

Reserved (13—15)

N/A

Level 2
Level 3
Level 1

Reserved

N/A

Not Indicated

16—24 bits

Reserved (6—7)

Not Indicated

Reserved (14—15)

N/A

▐

337M Status

Enter to View

[Down]▐

Validity Bit

[Down]▐

Bit Activity L

[Down]▐

Bit Activity R

Pa Alignment

[Down]▐

Pa Spacing

[Down]▐

Pc Value

[Down]▐

Pd Value

Left

Right

N/A

xxxx samples

N/A

Pa spacing can be used to help
diagnose bitstream errors. Correct
values are:
Dolby Digital: 1,536 samples
Dolby E/NTSC: 1,601/2 samples
Dolby E/PAL: 1,920 samples

xxxxxx

N/A

0
1

N/A

23▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ 00

Active bits within the current PCM
block of 1,536 samples are shown
as solid at the center of each bar.

Dolby® DM100 User’s Manual Operation: Status Mode

3-26

3.2.4 Input Level Menu

Press [Enter] to display Input Level status. The display
combinations are shown below. A typical example screen is
shown:

Ch1 DE Prog 1 L

-10 dB –6 dB

Input is Dolby E

DE

Input is Dolby Digital

DD

Input is PCM

PCM

No input, or channel not

present in input bitstream

blank

Ch1—8

Prog 1—8

Displays program
number if the input
bitstream is Dolby E.

Blank

Input not Dolby E.

Left Front

L

Right Front

R

Center

C

Low-Frequency Effects

LFE

Left Surround

Ls

Right Surround

Rs

Mono Surround

S

Ch 1 of a 1+1 stream

C1

Ch 2 of a 1+1 stream

C2

Channel not present in

input bitstream

Blank

Input Level

ENTER to view

dB RMS dB Peak

▐

Press [Enter] to toggle
between numeric display
and a bargraph RMS level
display.

▐

J J J |J J J J J

– 90 dB RMS level 0 dB

Digital Full-Scale

Dolby® DM100 User’s Manual Operation: Status Mode

3-27

3.2.5 Generator Status Display

Press [Enter] to display Generator status. The possible display
combinations are shown below:

See Section 4.2 for selecting stream and waveform names and
frequencies.

xxxx.x samples

The latency between the
output and input of the
DM100 in samples or ms.
Press [enter] to switch
between samples and time.

xxx.x ms

time

No Input

No AES3 input

N/A

Noise burst not received
within 1.5 times the max
latency setting.

The unit is generating a

non-PCM bitstream.

Generating

bitstream name

OR

The unit is generating a

PCM bitstream.

PCM name

OR

The unit is in

Pass Through mode.

blank

Pass Through

OR

The unit is in

Latency Test mode.

Measured Latency

OR

The unit is in

A/V Freq Drift mode.

A/V Freq Drift

Generator

ENTER to view

xxxxxHz –yydB

Waveform is Sine
or Square, Frequency and

level in dBFS.

F1—F2 –yydB

Waveform is Frequency
Sweep, Frequency range and

level in dBFS.

–yydB

Waveform is Pink or
White Noise, Level in dBFS.

N/A

Waveform is Silence.

xxxx samples

The difference in clock rate
between the AES input and
the Video reference input.
A continuous counter
indicates the drift of the
AES input with respect to
the video. A positive
number indicates the AES
input signal is faster than
the video reference. Press
[Enter] to reset the counter.

No Input

No AES3 input.

No Video

No video input.

Wrong Video Rate

Video present, but not
at 29.97 or 25 fps.

N/A

Waiting to make a reading.

Dolby® DM100 User’s Manual Operation: Status Mode

3-28

3.2.6 Video Reference Status Display

A typical example is shown for the Video Reference input status
display:

Video Ref

29.29 fps

25 fps

Frame Rate.

29.97 fps

No video input.

No Input

Video input present but invalid.

Video Ref

Error

Dolby® DM100 User’s Manual Operation: Status Mode

3-29

3.2.7 Timecode Status Display

Dolby Digital

Timecode data as derived from the timestamp of the stream
currently being decoded (if present). Encoding latency can be
conveyed to a downstream MPEG broadcast encoder with a
Dolby Digital stream.

Semicolons are used to separate the timecode fields when
receiving Drop Frame timecode.

Dolby E

Timecode data as carried within the Dolby E bitstream, derived
from the metadata.

“

**:**:**:**

N/A”

The display shown above occurs under any of the following
conditions:

• A Dolby E or Dolby Digital bitstream is not being decoded

(this includes selecting the PCM portion of a 16-bit Dolby
Digital/PCM stream).

• The current Dolby E timecode field is set to “invalid” or the

Dolby Digital bitstream does not contain timecode.

Timecode xx Dly
00:00:00:00 N/A

Timecode

Timestamp data burst delay, if present,
indicates the encode latency referenced
to A/V sync. A positive number indicates
an advance in milliseconds from the
reference, while a negative number
indicates a delay. Refer to SMPTE 339M
for further information.

Timecode frame rate: 23, 24, 25, 29, or 30
(23=23.98 fps)
(29=29.97 fps)

Dolby® DM100 User’s Manual Operation: Status Mode

3-30

3.2.8 Error Stats Menu

After pressing [Enter] to select the Error Statistics menu, press
the [Down] or [Up] button to select the desired error screen. A
typical example screen is shown.

The first screen displays any current error condition that
prevents correct operation of the DM100. Subsequent screens
display a historical count of errors. Error counts over 99 display
as 99. Press [Enter] to reset a displayed error count to 00.

Error Stats

ENTER to view

Error Cond

No Error

Error Cond

[Down]▐

Dolby E Errors

CRC:xx

[Down]▐

Dolby D Errors

CRC:xx

[Down]▐

Pa Alignment

ERR:xx

When receiving a

bitstream, this screen

shows the number of

frames where the SMPTE-

337M Pa word does not

appear in the Left channel.

[Down]▐

Parity, Code,

Confidence

AES3 Errors 1

P:aa CD:bb CF:cc

[Down]▐

Professional

AES3 Errors 2

Channel Status CRC

CCRC:dd

No Error

The channel mode in Dolby E

input is invalid.

Invalid Ch Mode

Selected Dolby E program does

not exist.

Invalid Program

Selected Decode Format not

present in input.

Invalid Format

Selected AES Channel does not

contain a valid Dolby Digital

stream.

Invalid AES Ch

Selected Stream # is not present

or does not contain a valid

Dolby Digital stream.

Invalid Stream #

Selected Output Channel (for

speaker/headphones) is not

present in the input signal.

Invld Output Ch

Selected generator clock source

is missing or bad, or in I/O

Drift mode, the video input is

missing or not at 29.97 or 25

fps.

Invalid Gen Clk

The input is not set to

Autodetect and the selected

input has no valid AES signal

or there is no input when in

A/V Freq Drift or Latency Test

modes.

No Input

Dolby® DM100 User’s Manual Operation: Status Mode

3-31

3.2.9 DM100 Firmware Version

This last Status menu item displays the version of the firmware
currently installed in your DM100.

Pressing [Down], [Esc], or [Status] returns the display to the
top-level Main Status screen.

Firmware Version

2.0.0.0

Dolby® DM100 User’s Manual

4-1

Chapter 4

Operation: Setup Mode

Introduction

Pressing [Setup] switches the DM100 into Setup mode. Use this
function to configure your DM100. All setup settings are saved
when the unit is turned off. The settings shown in bold are the
factory defaults. The setup menu choices are:

The following pages show the setup selections available for each
of the menu choices.

DM100 Main Setup

Monitor Control

Monitor Control
[Down]▐
Gen Control
[Down]▐
AES3 Output
[Down]▐
User Presets
[Down]▐
I/O Control
[Down]▐
System Settings

Dolby® DM100 User’s Manual Operation: Setup Mode

4-2

4.1 Monitor Control

The Monitor Control menu contains all of the functions that
control the audio output of the DM100. After pressing [Enter] to
select the Monitor Control menu, press the [Down] or [Up]
button to choose the desired setting:

Decode Format chooses the type of bitstream the DM100 will
decode. This is normally set to Autodetect; however, it is
possible to force the DM100 to decode only one stream type, if
required.

Output Ch Map chooses which audio channels or downmix
(Lt,Rt or Lo,Ro) are output from the headphone or speaker.

Dolby E Prog Sel selects one of the available programs in a
Dolby

®

E stream for monitoring.

DE Dialogue Lev applies the metadata parameter Dialogue
Level or “dialnorm” to the audio output of a Dolby E stream.

DD Stream Select and AES3 Ch Select choose which signal
from a multiplexed Dolby Digital bitstream is decoded.

DD Compression applies Dolby Digital dynamic range control
data to the audio output. RF is the heaviest compression and
Custom is the lightest. DD compression can be useful when
listening in a noisy environment.

When listening through the speaker, this setting has no effect,
and RF Mode is always used.

Headphone Mode sets mono or stereo mode for the
headphones. Mono = (L+R)/2.

Dolby® DM100 User’s Manual Operation: Setup Mode

4-3

DM100 Main Setup

Monitor Control

Monitor Control

Decode Format

[Down]▐

Monitor Control

Output Ch Map

[Down]▐

Monitor Control

Dolby E Prog Sel

[Down]▐

Monitor Control
DE Dialogue Lev

[Down]▐

Monitor Control

DD Stream Select

[Down]▐

Monitor Control

AES3 Ch Select

[Down]▐

Monitor Control

DD Compression

[Down]▐

Monitor Control

Headphone Mode

Autodetect

Dolby E

Dolby Digital

PCM

L=Lo R=Ro

L=Lt R=Rt

L=L R=R
L=C R=C

L=Ls R=Rs

L=LFE R=LFE

Program 1

Program 2—8

Enabled

Disabled

Autodetect

Stream 0—7

Autodetect

Channel 1
Channel 2

Channel 1+2

Line Mode

RF Mode

Custom

Custom disables
dynamic range
compression, except
when listening to a
downmix.

Stereo

Mono

[Enter]

[Enter]

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-4

4.2 Gen Control

The Gen Control menu contains all of the settings for the
bitstream generator. After pressing [Enter] to select the
Generator Control menu, press the [Down] or [Up] button to
choose the desired setting:

Output Mode switches the generator on or off, either passing
through the input signal to the output connectors or connecting
the generated signal to the output connectors. It also sets the unit
to latency measurement or A/V frequency drift measurement
modes.

Gen Stream Sel selects the generator output stream from a list
of Dolby E, Dolby Digital, and PCM streams.

PCM Waveform contains the settings for the PCM generator
signal, allowing sine, square, sweep, and pink or white noise
signals to be created.

DE Offset allows the Dolby E bitstream to be placed a number
of lines away from the video sync point (a valid video reference
input is needed for this function).

DD Ch Mode chooses where to place a Dolby Digital stream in
the output AES3 stream (Channel 1+2 is the usual setting).

When measuring the latency of external equipment, the Noise
Burst Rate function sets the frequency of the short noise bursts.
See Section 2.7 for more information. The larger the setting, the
less frequently the noise bursts are generated, and the larger the
latencies that may be measured. However, larger settings
increase the time taken to make each measurement.

New bitstreams may be uploaded to the DM100 using the
Upload Bitstream function. To load and store new streams,
connect a Windows

®

PC to the DM100 using the supplied cable.
The baud rate is fixed at 115.2 kbps. Activate the Upload
Bitstream function on the DM100 and follow the prompts on the
PC software supplied. During the upload, the DM100 display
will show progress. When complete, reboot using the [Esc] key.

Dolby® DM100 User’s Manual Operation: Setup Mode

4-5

Generator

Latency Test

A/V Freq Drift

Pass Through

PCM

DE stream names
DD stream names

Sine

Square

Freq Sweep

Silence

Pink Noise

White Noise

1000 Hz

20 Hz

16000 Hz

[Up] [Down] buttons step frequency.
[Shift] toggles between 10 Hz and
1 kHz steps. [Enter] selects.

1 to 10 seconds, default is 5 sec

Use [Up] [Down] buttons

–60 to 0 dBFS, default –20 dBFS

Use [Up] [Down] buttons

Both, Left, Right

2 to 10 seconds, default is 2 sec.

Line 14
Sets the video line number where
the Dolby E data begins. Refer to
SMPTE-170M and ITU-RBT.470-6
for video line structure. The correct
line number is 14 for 29.97 fps
(NTSC) signals and 11 for 25 fps
(PAL) signals.

Channel 1
Channel 2

Channel 1+2

Ready to Load
<ESC> to Abort

Gen Control
Output Mode

[Down]▐

Gen Control

Gen Stream Sel

[Down]▐

Gen Control

When generating PCM

PCM Waveform

[Down]▐

Gen Control

When generating PCM

PCM Frequency

Sine or Square waveform

[Down]▐

Gen Control

PCM Sweep Min F

[Down]▐

When generating

Gen Control

PCM Freq Sweep

PCM Sweep Max F

Waveforms

[Down]▐

Gen Control

PCM Sweep Time

[Down]▐

Gen Control

When generating PCM

PCM Amplitude

(except silence)

[Down]▐

Gen Control

When generating PCM

PCM Channel

[Down]▐

Gen Control

When Output mode is

Noise Burst Rate

Latency Test

[Down]▐

Gen Control

When generating

DE Position

Dolby E streams

[Down]▐

Gen Control

When generating

DD Ch Mode

Dolby Digital streams

[Down]▐

Gen Control

Upload Bitstream

Upload Bitstream
ENTER=Yes ESC=No

[Enter]

[Enter]

DM100 Main Setup

Gen Control

[Enter]

[Enter]

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-6

4.3 AES3 Output

The AES3 Output menu allows the user to control the value of
the AES3 status bits present on the output of the DM100. The
output can be set to pass through each parameter from the input
(or from the generator), or each parameter can be manually set to
a desired value. When a value has been changed, the current
decode LED will flash (long on, short off) to indicate this
change. To reset all of the parameters, use the Pass Through All
function.

Dolby® DM100 User’s Manual Operation: Setup Mode

4-7

AES3 Output

AES3 Mode

[Down]▐

AES3 Output

Audio Mode

[Down]▐

AES3 Output

Pro Chan Status

[Down]▐

Professional

Consumer

Pass Through

Not Indicated

48 kHz

44.1 kHz
32 kHz

Pass Through

Audio

Non-Audio

Pass Through

Locked

Unlocked

Pass Through

Not Indicated

Reserved (1—3)

No Emphasis

Reserved (5)

50/15-us Emph

J.17 Emph

Pass Through

Pro Chan Status

Emphasis

[Down]▐

Pro Chan Status

Freq Mode

[Down]▐

Pro Chan Status

Sample Freq

AES3 Output

Cons Chan Status

[Down]▐

Cons Chan Status

Copyright

[Down]▐

Cons Chan Status

Additional Info

[Down]▐

Cons Chan Status

Sample Freq

Pass Through

No

Yes

2ch No Pre-Emph

Reserved 1—3

2ch 50/15us

Reserved (5—7)

Pass Through

Pass Through

32 kHz

44.1 kHz

48 kHz

AES3 Output

Validity Bit

[Down]▐

AES3 Output

Pass Through All

0
1

Pass Through

Pass Through All
ENTER=Yes ESC=No

DM100 Main Setup

AES3 Output

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-8

4.4 User Presets

Up to four user presets can be saved, named, and recalled. These
presets contain a copy of the DM100 setup information.

DM100 Main Setup

User Presets

User Presets

Recall Preset

[Down]▐

User Presets

Save Preset

01-<name 1>

02-<name 2>
03-<name 3>
04-<name 4>

After selecting preset

01

number using the

02

[Up]/[Down] buttons,

03

press [Enter] to

04

move to the editing
screen.

xx is the preset number. Press the

Enter xx Name

[Up] or [Down] buttons to move

name

through the alphabet. Press [Enter]
to select the character and move to

next position. Use [Esc] to make
any corrections.

After 12 characters (including

Save Settings?

spaces) have been entered, the

ENTER=Yes ESC=No

preset and name can be saved.

[Enter]

[Enter]

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-9

4.5 I/O Control

The I/O control menu configures the physical input and output
connections of the DM100. Input Select allows the user to
choose a specific physical input rather than the default of
Autodetect. Gen Clock Source chooses the reference signal for
the generator. DAC on Non-Audio sets audio output mute or
active when the incoming bitstream is flagged as non-audio data.
Optical Output switches the Toslink

TM

optical output on or off.

If not required, disable it to extend battery life.

Logging Output can be used for long-term data recording.
See Section 5.1 for more information.

Passthru Ch Swap allows the output channels to be swapped or
skewed when in Pass Through mode.

DM100 Main Setup

I/O Control

I/O Control

Input Select

[Down]▐

I/O Control

Gen Clock Source

[Down]▐

I/O Control

DAC on Non-Audio

[Down]▐

I/O Control

Optical Output

[Down]▐

I/O Control

Logging Output

[Down]▐

I/O Control

Passthru Ch Swap

Autodetect

BNC
XLR
Optical

Digital Input
Video Ref 48 kHz

Internal 48 kHz

Mute

Active

Enabled

Disabled

Normal

Swapped
Skewed

[Enter]

Input Swapped Output Skewed Output

Left L0 L1 L2 L3 R0 R1 R2 R3 R0 R1 R2

Right R0 R1 R2 R3 L0 L1 L2 L3 L0 L1 L2 L3

[Enter]

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-10

4.6 System Settings

The System Settings menu contains options for setting user
preferences for the DM100. RS-232 Baud Rate controls the
speed of the RS-232 port logging data. Unit Name allows entry
of up to 12 characters to give a DM100 a unique identity. This is
displayed during power on. The Power Management function
controls how long the unit remains switched on after the last
button press when operating on battery power. LCD Backlight
and Contrast Adjust control aspects of the LCD. Firmware
Upgrade is used to load new firmware into the DM100.

DM100 Main Setup

System Settings

System Settings
RS232 Baud Rate

[Down]▐

System Settings

Unit Name

[Down]▐

System Settings

Power Management

[Down]▐

System Settings

LCD Backlight

[Down]▐

System Settings

Contrast Adjust

[Down]▐

System Settings

Firmware Upgrade

Used for data logging.

115.2 kbps

(see Section 4.5)

38.4 kbps

19.2 kbps

To edit this line,

DM100

see Section 4.4

15 min

Auto power-off

10 min

setting

5 min
Disabled
30 min

Enabled

Disabled

Contrast Adjust

▐▐▐▐

Backlight always

on, if enabled.

Note: Backlight can

also be toggled on and

off by pressing [Shift]

then [Power] button

(battery operation only).

Use [Up]/[Down]

During the upgrade, the display

Ready to Load

will show progress. When complete,

<ESC> to Abort

the DM100 will reboot. The data rate
is fixed at 115.2 kbps.

Note: This function can be accessed directly. Turn off the DM100
by pressing the [Power] button. Press the [Power] button again
while holding down the [Setup] button.

[Enter]

Firmware Upgrade
ENTER=Yes ESC=No

[Enter]

[Enter]

Dolby® DM100 User’s Manual Operation: Setup Mode

4-11

Note: When powered from the external power supply, the Power

Management setting is ignored and the unit remains switched
on. The LCD backlight and keypad backlights are also turned
on, overriding the LCD Backlight setting.

Dolby® DM100 User’s Manual

5-1

Chapter 5

Reference Information

5.1 Data Transfer

Connect the RS-232 port on the front of the DM100 to a
computer using the cable provided. The RS-232 serial interface
is used for:

• Test bitstream loading.

• Data logging. Status information can be transferred from

the DM100 via a terminal program. The status
information is transmitted in the form of text messages
that can be read on the terminal display.

• Firmware upgrades.

Test Bitstream Loading

Test bitstream loading is accomplished using the Gen Control
setup menu. Press the [Setup] button, then use the [Down]
button to step to the Gen Control menu. See Section 4.2 for
more information. The table at the end of this section lists
possible error messages. Test bitstreams are loaded at a fixed
data rate of 115.2 kbps.

Data Logging

This function can be used for long-term data recording. Any
standard terminal program may be used on the computer. The
logged data is in this order: time, parameter, and value. The
logged time is the elapsed time since the DM100 was last
switched on. A fixed set of parameters is always logged (input
format, errors, etc.). One additional parameter may be logged by
navigating to the status screen that contains that parameter.

Dolby® DM100 User’s Manual Reference Information

5-2

First, set the baud rate you wish to use via the System Settings
menu: Press the [Setup] button, then use the [Down] button to
step to the System Settings menu. Press [Enter] and select the
desired data rate with the [Up/Down] buttons. Press [Enter] to
save. Next, to initiate logging: Press the [Setup] button again,
then use the [Down] button to step to the I/O Control menu.
Press [Enter], then use the [Down] button to step to Logging
Output. Press [Enter] then use the [Down] button to select
Enable. Press [Enter] to start logging via the RS-232 connection
to your terminal program. See Sections 4.5 and 4.6.

Firmware Upgrade

With the DM100 powered off, press the [Power] button, then
hold down the [Setup] button. The DM100 will display the
Firmware Upgrade screen. The data transfer operates at a fixed
data rate of 115.2 kbps. If an error occurs during the upgrade,
the Error LED illuminates, an error message is displayed, and
the data transfer halts.

Pressing the [Esc] button exits the upgrade mode if data is not
being transferred, or turns the unit off if a data transfer error
occurs.

Data Transfer Error Messages:

Error Message Display Description

HDR CHKSUM ERR

Invalid checksum in file’s header.

HDR LENGTH ERR

Invalid length in file’s header.

DATA CHKSUM ERR

Invalid checksum in data portion of file.

DATA LENGTH ERR

Invalid data length specified in file’s header.

FLASH INIT ERR

Flash memory detection failed: device code not recognized.

FLASH ERASE ERR

Flash sector protected and can not be erased.

FLASH PGM ERR XX
AT ADDR YYYYYY

Flash not blank at address YYYYYY (hex). Flash module
error code given in XX (hex).

IMAGE SIZE ERR

Error in downloaded image size or address: Too large for
either RAM or flash.

VERIFY ERR

Programmed image in flash does not match downloaded
image after programming.

PRODUCT ERR

Product code in file’s header is not “DM100.”

FLASH MEM FULL

No space left in flash memory (when loading test bitstreams).

TOO MANY STREAMS

There is a limit of 200 streams in the unit.

Dolby® DM100 User’s Manual Reference Information

5-3

5.2 Unit Reset

Restore Default Settings

With the DM100 powered off, press [Power] while holding
down the [Enter] button. The factory default settings are restored
without changing your presets or stored test bitstreams.

Hardware Reset

In the unlikely event that the restore procedure above does not
work, the unit can also be reset by inserting a pen point or paper
clip into the RESET hole on the back of the DM100. The unit
will reset and power off.

Dolby® DM100 User’s Manual Reference Information

5-4

5.3 Connector Pinout Information

5.3.1 RS-232 Serial Port

Pin Connection Description

1 NC
2 NC
3 RX Asynchronous data out
4 Ground
5 TX Asynchronous data in
6 NC
7 NC
8 NC

Note: This unit is a DCE device designed for connection to a DTE

device. The TX is the data input and the RX is the data output

5.3.2 XLR Connectors

Pin Connection

1 Signal Ground
2 Signal +
3 Signal –

5.3.3 Headphone Connector

Pin Connection

Tip Left Channel

Ring Right Channel

Sleeve Common

Dolby® DM100 User’s Manual Reference Information

5-5

5.4 DM100 Specifications

Sampling Rates
48 kHz for all modes,
32 kHz and 44.1 kHz for Dolby Digital
and PCM

Video Frame Rates

29.97 and 25 fps

Frequency Response

Digital Outputs: 20 Hz–20 kHz, ±0.25 dB

Distortion
<0.01% at 1 kHz
<0.02%, 20 Hz–20 kHz

Dynamic Range
>100 dB

Digital Audio Inputs

AES/EBU via XLR female connector,

110Ω.

AES3ID-1995/SMPTE 276M

via BNC connector, 75Ω

Fiber optic via Toslink

TM

connector
Input word lengths up to 24 bits
Supported digital bitstreams:
16- and 32-bit Dolby Digital,
Consumer Dolby Digital,
16-, 20-, and 24-bit Dolby E,
Non-audio AES3

Reference Video Input

Analog composite NTSC or PAL black
burst video reference, 1 Vp–p, via RCA

connector, 75Ω internally terminated

Digital Audio Outputs

AES/EBU via XLR female connector,

110Ω.

AES3ID-1995/SMPTE 276M

via BNC connector, 75Ω

Fiber optic via Toslink connector
Output word lengths up to 24 bits

Serial Input/Output Port
8-pin female mini DIN, RS-232

Headphone Output

+5.8 dBu max (adjustable) into 600Ω,

1/8-inch standard stereo headphone jack

Case
ABS plastic handheld enclosure

Dimensions and Weight

100 × 200 × 41 mm
(4 × 7.9 × 1.6 inches)

Net 0.68 kg (1.5 lb)

Environmental Conditions
Operating: 0° to 50°C (32° to 122°F),
0–98% relative humidity (non­condensing)
Non-operating: –20° to +70°C
(–68° to +158°F)

Power Requirements
External 6 VDC, 800 mA
or four internal 1.5 V AA batteries
Typical battery life 10 hours, continuous
use

Supplied Accessories
User’s manual
Warranty card
Carrying case
Batteries
External DC power adapter
BNC (F)-to-RCA (M) adapter for video
reference input,
RCA (F)-to-BNC (M) adapters for the
two audio inputs,
RS-232 serial data cable
Bitstream CD-ROM

Regulatory Notices
North America: This unit complies with

the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules, and
Industry Canada ICES-003 regulations.
Europe: This unit complies with the
requirements of EMC Directive
89/336/EEC.

DM100 User’s Manual Reference Information

5-6

5.5 System Block Diagram

V-Ref

Clock generati on

Digital Signal

Processor

RS-232

Front Panel

LCD and

LEDs

Toslink

AES-3

Receiver

Toslink

AES-3

Transmitter

Keypad

Video Refere nce

..

.

XLR

XLR

BNC

BNC

Headphones

Internal Speaker