Dolby Laboratories DM100 User Manual

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DM100 Bitstream Analyzer
Volume
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.
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Dolby® DM100 User’s Manual
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Dolby Laboratories, Inc.
Corporate Headquarters
Dolby Laboratories, Inc.
100 Potrero Avenue San Francisco, CA 94103-4813 Telephone 415-558-0200 Fax 415-863-1373
www.dolby.com
European Headquarters
Dolby Laboratories, Inc.
Wootton Bassett Wiltshire, SN4 8QJ, England Telephone (44) 1793-842100 Fax (44) 1793-842101
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
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Dolby® DM100 User’s Manual
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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
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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
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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
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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
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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.
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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.
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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…
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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
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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.
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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.
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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
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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.
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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.
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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).
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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
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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
*******
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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
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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
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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
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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]
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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
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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
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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
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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
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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
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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
Page 30
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.
Page 31
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 #
Page 32
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
Page 33
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
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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
Page 35
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
Page 36
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
Page 37
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
Page 38
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:
Page 39
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
Page 40
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
Page 41
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
Page 42
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
2300
Active bits within the current PCM block of 1,536 samples are shown as solid at the center of each bar.
Page 43
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
Page 44
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.
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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
Page 46
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)
Page 47
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
Page 48
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
Page 49
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
Page 50
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.
Page 51
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]
Page 52
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.
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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]
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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.
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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]
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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]
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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]
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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]
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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.
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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.
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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.
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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.
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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
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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,
110.
AES3ID-1995/SMPTE 276M
via BNC connector, 75
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, 75 internally terminated
Digital Audio Outputs
AES/EBU via XLR female connector,
110.
AES3ID-1995/SMPTE 276M
via BNC connector, 75
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.
Page 65
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
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