DTS CAE-4 User guide

Revision 2.2

Revision 2.2 Page i
Table of Contents
1 Introduction............................................................... 1
1.1 OVERVIEW...................................................................................................................1
1.2 REGULATORY NOTICES.............................................................................................2
1.2.1 Emi Notice .............................................................................................................2
1.2.2 Patents...................................................................................................................2
1.3 RETURNS.....................................................................................................................2
1.4 WARRANTY INFORMATION........................................................................................3
2 Unpacking ................................................................. 4
2.1 UNPACKING.................................................................................................................4
3 Encoder Box Controls and Connectors.................. 5
3.1 QUICK-START SET-UP................................................................................................5
3.2 ELECTRICAL SPECIFICATIONS..................................................................................5
3.3 FRONT PANEL CONTROLS AND INDICATORS .........................................................5
3.3.2 Surround Switch 0dB/-3dB...................................................................................6
3.3.3 TC Trig/TC bypass ................................................................................................6
3.3.4 Lfe On/Lfe Off........................................................................................................6
3.3.5 1509k/754k.............................................................................................................6
3.3.7 DVD Status Indicator ............................................................................................6
3.3.8 CD Status Indicator...............................................................................................7
3.3.9 TC Indicator Light .................................................................................................7
3.3.10 READY Light ......................................................................................................7
3.3.11 RESET Switch (momentary)..............................................................................7
3.4 REAR PANEL CONNECTORS......................................................................................7
3.4.1 Mains Power with Power On/Off Switch .............................................................7
3.4.2 Time code Input ....................................................................................................8
3.4.3 Bitstream Output...................................................................................................8
3.4.4 L/R Digital Audio Input .........................................................................................8
3.4.5 LS/RS Digital Audio Input.....................................................................................8
3.4.6 Center/SubWoofer Digital Audio Input................................................................8
3.4.7 Input Channel Mapping ........................................................................................8
4 Example: Production Setups.................................. 9
4.1 GENERIC SETUP.........................................................................................................9
4.2 AUTHORING SYSTEMS SUPPORT...........................................................................12

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5 DTS Record Panel Software .................................. 13
5.1 OVERVIEW.................................................................................................................13
5.1.1 Panel.................................................................................................................... 13
5.1.2 Using Panel in CD Code (44.1)...........................................................................14
5.1.2 Optional Dos Utilities..........................................................................................14
6 E175-01 DVD Timecode Controller........................ 16
6.1 E175-01 DVD FEATURES ..........................................................................................16
6.1.1 Interface I/O.........................................................................................................16
6.1.2 Power................................................................................................................... 16
6.2.2 Signal................................................................................................................... 16
6.2 SETUP & INITIALIZATION..........................................................................................17
6.3 FUNCTIONAL DESCRIPTION ....................................................................................17
7 CAD-4 Professional Decoder................................. 19
7.0 SET-UP.......................................................................................................................19
7.1 MAINS POWER .......................................................................................................... 19
7.2 INTERFACE................................................................................................................19
7.2.1 Inputs...................................................................................................................19
7.2.2 Digital Outputs.................................................................................................... 19
7.3.3 Analog Outputs...................................................................................................19
7.3 STATUS INDICATORS ............................................................................................... 19
Appendix A.................................................................... 20
Time code embedding specifications..............................................................................20
A1.0 DTS Bitstream Time code Embedding Specification..........................................20
Coding of preamble ........................................................................................................21
Table 1 Preamble Words................................................................................................ 21
32-bit mode ....................................................................................................................21
16-bit mode ....................................................................................................................21
burst_info........................................................................................................................21
Table 2 burst_info........................................................................................................... 21
data_type........................................................................................................................22
Table 3 Values of data_type........................................................................................... 22
Reserved bits.................................................................................................................. 22
error_flag........................................................................................................................22
data_type_dependent.....................................................................................................22
data_stream_number .....................................................................................................22
length_code....................................................................................................................22
Burst spacing..................................................................................................................23

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The null data_type..........................................................................................................23
The DTS data_type ........................................................................................................23
Table 4 Values of data_type_dependent When data_type = 1 .......................................23
Placement of DTS frames into data bursts .....................................................................23
1.4.2 The time stamp data_type..................................................................................24
Figure 1. Encoding audio with time code. .......................................................................24
1.4.3 Preamble values..................................................................................................24
Time stamp payload.......................................................................................................24
Figure 2. Time stamps and DTS frames in the IEC958 data stream...............................26
Table 6 Frame Rate Code.............................................................................................. 26
Appendix B.................................................................... 27
Compacting files using the Join program ..............................................................................27
DTS Encoding System User Information.................... 27

Revision 2.2 Page 1
1 Introduction
1.1 OVERVIEW
This manual describes the configuration and operation of the DTS Professional Audio
Equipment, which includes the CAE-4 Professional Encoder, the CAD-4 Decoder, and the
E175-01 DVD Timecode Controller. This is the reference equipment to create DTS bitstreams
from 5.1 source material for DVD-Video and CD.
The manual explains the general requirements for encoding. It also outlines specific production
scenarios. The scenarios serve as examples for configuring production environments.
Operating software is included in this package (on CD-ROM), and it runs on Windows 95, 98,
2000 or NT systems. Use of the DTS Record Panel is described in Section 5 of the manual. At
the end of each project, always comply with standard industry practice for Quality Control (QC).
It is strongly recommended that QC always include critical listening of encoded material to
verify acceptability of content for end users.
A software playback panel will be available in the upcoming months. Until then it may be
necessary to use a third party program (ie; Sound Forge) for play back of DTS files directly
from your computer. A typical application is illustrated in Figure 6.
The E175-01 DVD Timecode Controller is described in Section 6 of this manual. It is used to
sync picture content with audio content for DVD-Video applications, enabling users to select an
encoding project start and end time.
Minimum Computer Requirements to operate the DTS Record Panel software:
1. Windows 95, 98, 2000 or NT
2. A PC with a minimum of 64 Mbytes of memory, a separate system drive and a data drive
with 4Gbytes (content dependent) free on hard drive.
3. Your will need to turn off background programs running (ie; screen savers, virus scan – off,
etc). This will insure a successful DTS encode bitstream capture into the computer.
4. It is suggested that in AGP video card be used where possible.
Sound Cards tested and verified for use with DTS Pro Audio Equipment:
1. SEK'D-PRODIF 96 Pro
2. Lynx One
3. Zefiro ZA2
4. MOTV 308/PC1324

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1.2 REGULATORY NOTICES
1.2.1 Emi Notice
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
Canadian Department of Communications compliance statement:
This equipment does not exceed Class A limits per radio noise emissions for digital apparatus
set in the Radio Interference Regulation of the Canadian Department of Communications.
Operation in a residential area may cause unacceptable interference to radio and TV reception,
requiring the owner or operator to take whatever steps are necessary to correct the
interference.
Avis de conformite aux normes du ministere des Communications du Canada:
Cet equipment ne depasse pas les limites de Classe A D'emission de bruits radioelectriques
pour les appareils numeriques telles que perscrites par le Reglement sur le brouillage
radioelectrique etabli par le ministere des Communications du Canada. L'exploitation faite en
milieu residentiel peut entrainer le brouillage des receptions radio et television, ce qui olbigerait
le proprietaire ou l'operateur a prendre les dispositions necessaires pour en eliminer les
causes.
1.2.2 Patents
The DTS system has been granted the following patents:
US Pat. Nos. 5,451,942, 5,956,674, 5,974,380, 5,978,762 and other worldwide patents issued
and pending. "DTS" and "DTS Digital Surround" are registered trademarks of Digital Theater
Systems, Inc., Copyright 2000 Digital Theater Systems, Inc. All rights reserved.
1.3 RETURNS
If any of the items on your packing list cannot be found, contact DTS with the P/N and
description of the missing item(s). Refer to information below before sending any product back
to DTS.
For warranty repair, exchange or getting replacement parts, please call your local DTS office or
dealer.
A DTS Return Authorization (“RA”) number is required before sending any item back to the
factory. At the time of the call, DTS will require that you provide the serial number of any unit(s)
for return before warranty replacement units will be sent. All return packaging should be clearly
marked with the Return Authorization number on the outside of the package.

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Please send all returns to:
North America Europe
Digital Theater Systems, Inc. DTS SA
5171 Clareton Drive Unit 5, Ruscombe Lane
Agoura Hills, California 91301-4523 USA Tavistock Industrial Estate
Telephone: [phone] Twyford, Berkshire RG10-9NJ
or toll free in USA: 800-959-4109 UK
Customer Service Fax: [phone] Telephone: [phone]
Fax: [phone]
1.4 WARRANTY INFORMATION
Equipment manufactured by DTS, Inc. is warranted against defects in materials and
workmanship for one year from date of purchase. There are no other expressed or implied
warranties.
DTS, Inc. obligation is restricted to repair and/or replacement of defective parts. Under no
circumstances will DTS, Inc.be liable for any other damage, either direct or consequential.
All requests for repairs or information should include the unit serial number to ensure rapid
service.
DTS OFFICES AND TECHNICAL SUPPORT
North America (corporate headquarters)
Telephone: [phone]
Fax: [phone]
DTS engineers are available to assist you. If you have an emergency after
business hours, please leave a message on the answering service and we will
return your call as soon as possible.
Europe (UK)
Telephone: [phone]
Fax: [phone]
INTERNET users may email DTS at the following address: [e-mail]
DTS Web Site: www.dtsonline.com
Future updates/new releases of the DTS Record Panel will be provided via the website.

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2 Unpacking
2.1 UNPACKING
The packaging is designed for typical shipping and handling. Upon receipt of shipment, check
for signs of damage before opening and report all damage to the carrier. All shipments made
from DTS are the customer's responsibility once they leave our premises.
Before installation it is suggested that a complete inventory be taken to minimize problems or
questions during installation. Additionally, save all packing material until installation is complete
in the unlikely event that a component(s) requires return to the factory. Use the packing slip
that came with your unit to verify received inventory.
The following is a sample packing list for a single system.
Typical DTS Pro Audio Equipment Package consists of:
•CAE-4 Professional Encoder
•CAD-4 Decoder
•E175-DVD Timecode Controller
•E175-DVD (1/4” Jack) to Encoder ( XLR) Cable assembly
•E175-DVD power adapter
•DTS Software suite including the DTS Record Panal and bitstream tools software on
CD-ROM
•Record Panel software on CD-ROM
•CAE-4 Encoder System Manual
•Spec Sheets for the CAE-4 Encoder and CAD-4 Decoder

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3 Encoder Box Controls and Connectors
3.1 QUICK-START SET-UP
The diagram below illustrates a quick verification procedure for DTS equipment functionality
with minimal interface. If any system interface problems are encountered, refer to this simple
set-up.
Time code Input #1 (From DA88)
ABC
*set selector switch out
+ 9V input
Time code out
AC Adapter
XLR-1/4inch cable provided.
Place CAE-4 into TC bypass to verify operation without E175-01 DVD.
Verify decoder mains switch on side of unit is set to proper mains voltage. Monitor output with
amp/speakers.
Check time code trigger by setting up E175-01 DVD per section 6. Place CAD-4 into TC trig
position to start encoding on user selected start time.
3.2 ELECTRICAL SPECIFICATIONS
See spec sheets for summary specifications.
3.3 FRONT PANEL CONTROLS AND INDICATORS
The four pushbuttons from the left have LED indicators to show their status. Pressing the
button after reset changes the state of the control. The only way to set the control back to its
default state is to press reset again. Always press the reset switch after changing a front
panel switch or introducing new content type (44.1K to 48K) at the AES/EBU input.
CD Mode ENCODER SPECIAL NOTE
E175-01
DVD
CAE-4 Encoder
(timecode input)
(bitstream output)
Digital Inputs
L/R LS/RS C/LFE
DA88 (AES/EBU)
Content Source
CAD-4 Decoder
XLR Balance
Digital input* Monitor
(analog out)

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1234kbps is the only active mode for CD. The active front panel switches in CD mode are TC
TRIG or TC BYPASS and LFE ON or LFE OFF. In CD Mode, even though the other switches
show lighted LEDs when switched to other positions, they are ignored by the encoder
processor.
In DVD mode, ALL front panel switches are fully activated.
3.3.2 Surround Switch 0dB/-3dB
In the 0dB position the LS/RS surround channels are not attenuated, which is the typical setting
for consumer encoding. The -3dB position setting attenuates the surround channels by 3 dB, to
accommodate the differences in theatrical consumer monitoring levels used while mixing.
3.3.3 TC Trig/TC bypass
In the TC TRIG State, the encoder will start encoding when the E175DVD start time is passed.
The Encoder will embed time code (DVD Mode) into the DTS output bitstream per appendix A.
The E175DVD is enabling encoding when incoming time code is between the user entered start
and end times. The green encoding indicator on the
E175DVD will be on when valid time code is output. Note: The “End” time must be greater than
the “Start” time. If the end time is not known, it should be entered with a large number (up to 24
hours). Refer to section 6 for operation of the E175DVD. Verify the start and end times are
entered on the E175DVD screen. The TC Status LED will blink at a 15Hz (fast) rate before the
Encoder trigger point indicating that it is receiving time code and then blink at a 5Hz(slow) rate
after passing the trigger point. The TC LED will be off with no time code present.
The TC BYPASS switched mode does not require a time code generator input. The Encoder
will not embed time code. Once locked to valid AES/EBU digital inputs, the Encoder will start
encoding within a few seconds of turning the mains power on. The Encoder, the TC LED, and
READY LED indicators will remain solid green.
3.3.4 Lfe On/Lfe Off
This switch controls the encoding of the LFE (subwoofer) channel. With the switch in the ON
position, the encoder will brickwall lowpass the LFE input of the 120Hz and encode the filtered
audio into a discrete LFE channel in the bit stream with the switch in the OUT position, audio in
the LFE input channel is ignored.
3.3.5 1509k/754k
1509kbps/754kbps are bit rate options for DVD encoding.
The bitrate for CD encoding is fixed at 1234 kbps.
3.3.7 DVD Status Indicator
This light indicates digital inputs at 48k samples/seconds. When the DVD led is “ON”, the
encoder will automatically select a bit stream.