THOMSON DBE 4120 User manual

17, rue du Petit Albi
BP 8244 95801 Cergy Pontoise Cedex FRANCE tel [phone]
fax [phone]
THOMSON broadcast system reserves the right to change product characteristics
without prior notice.
This document and any updates and/or supplemental information, including any copies
thereof, cannot be reproduced, neither communicated to a third party, without written
authorisation from
THOMSON broadcast systems
.
© 1999
THOMSON
broadcast systems
DBE 4120
MPEG-2 Encoder System for Contribution
Configuration guide

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.2of 12
Product overview
DBE 4120 features advanced MPEG-2
compression to provide the best
quality video encoding and
architecture flexibility for matching
the variety of I/O interfacing with
video sources and contribution
networks
Key features:
Ä4:2:2 and 4:2:0 high performance
compression
ÄMaximum interfacing flexibility
ÄHelper Channel capability
ÄExtensive audio handling
ÄLow and ultra-low delay modes
capability
ÄVBI lines transport
ÄScrambling capability
The DBE 4120 is a single service encoder, which performs the compression of video and audio
sources. The provision of extensive hardware and software options allows customising and
upgrading the system in order to match with customer requirements.
The video source is a SDI signal for the standard model but a composite video (PAL, SECAM or
NTSC) source can also be provided as an option. Video compression is achieved either in
MPEG-2 4:2:0 MP@ML or 4:2:2P@ML standard.
A TS input option allows daisy chaining of several encoders in order to multiplex related services
within the same output transport stream. Two audio channels, which can be de-embedded from
the SDI stream or received through separate analogue or AES/EBU audio sources, are
processed. Audio compression is performed according to the ISO/IEC 11172-3 layer 2 standard.
On option, up to eight additional stereo audio can be multiplexed with the SDI primary signals, as
well as data.
The DBE 4120 has been designed as a 2 RU height, 19" sub-rack, easy to install and operate. A
range of network interfacing options is proposed for PDH or SDH network interconnection with
ATM mapping. Thanks to its user-driven menu, it can be easily controlled and monitored locally
from the front panel keypad, or remotely through an Ethernet link with the DBS 2930
management software or with an SNMP agent in an NMS environment.
DBE 4120 Functional Block Diagram
MPEG2
Video
Encoding
VBI
Processing
Audio
Encoding
RS 232 Data
Interface
Data Multiplexing
Scrambling
PAL,
SECAM,
or NTSC
SDI
2 stereo or 4 mono
analogue audio
Ethernet
Data
Options
TS ASI
Control Alarms
LCD/Keypad
Composite
video
AES
Input
2 AES/EBU
audio
4:2:0 &
4:2:2
ASI
Interface
ATM Network
Interface
PDH
or
SDH
Audio
Encoding
4 AES/EBU audio Audio
Encoding
4 AES/EBU audio
Modulator
IF

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.3of 12
Benefits
4:2:2 and 4:2:0 high performance compression
Thanks to its second generation Thomson chipset, designed in order to improve the
performance encoding, the DBE 4120 encoder features advanced processing
capabilities such as adaptive video pre-processing and new compression features
such as five-level hierarchical motion estimation, far-ranging motion vector calculations
and two-pass rate control, resulting in valuable savings of bit rate for the same video
quality. Furthermore, when picture content must be preserved, the encoding can be
simply changed by software controlled switching from the 4:2:0 format into the 4:2:2
format.
Maximum interfacing flexibility
Besides the basic encoder configuration, four extension slots and software options are
available such that a specific combination of cards and software additional functions
can be used to tailor a customised configuration: composite video input, addition of
analogue or AES/EBU audio channels, ATM interface for PDH or SDH networks, data
and VBI multiplexing for broadcast customising, scrambling for content protection, etc.
Helper Channel capability (option)
The Helper Channel software option allows minimizing the loss in picture quality when
several encoding-decoding processes occur in cascade. The Helper Channel
information is carried by using one VBI line. Automatic detection of re-encoding data
set is achieved.
Extensive audio handling (option)
Up to eight additional audio signals can be compressed. These are embedded within
the incoming SDI signal or external AES/EBU coded audio. Overall encoder capability
may be achieved with 10 digital stereo audio channels.
Low and ultra-low delay mode capability (option)
Delays in live interviews between different locations can be optimized with the low
delay mode option, providing less than 290 ms end-to-end delay, and now down to 140
ms with the ultra-low delay mode.
VBI lines transport
The DBE 4120 encoder provides the capability of transporting VBI lines from either 50
or 60 Hz, SDI or analogue sources system.
Scrambling capability
DVB compliant common scrambling is provided as an option, in order to preserve the
content and the access, as may be required for instance for post-production.

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.4of 12
Features and Capabilities
Video
SDI video input
Selectable vertical sub-sampling for format conversion from 4:2:2 to 4:2:0
300 m cable equalization
Horizontal re-sampling (352, 480, 528, 704, 720)
3:2 pull down detection (60 Hz only)
Optional:
Composite video input for PAL, SECAM and NTSC (hardware option)
Audio
Two stereo or four mono analogue audio
Or two stereo or four mono digital audio extracted from SDI input
(synchronous 48 KHz 20-bit audio)
Optional:
Four additional stereo audio encoder (AES/EBU or SDI) (hardware option)
Two stereo audio AES/EBU audio inputs (hardware option)
Four additional AES/EBU audio (hardware option, exclusive of composite option)
Data (software option)
RS 232 data link (software option); Data rates: from 1200 to 57600 bauds
Protocol: transparent
TS input
VBI processing (software option)
-From 50 Hz analogue (PAL, SECAM) source: CEEFAX B, magazine and/or subtitles, 50 Hz
VITC, VPS, Any Monochrome VBI line
-From 50 Hz SDI source: CEEFAX B, magazine and/or subtitles, 50 Hz DVITC, WSS, VPS
(digitized waveform VBI only), FCP, AFD, Any Monochrome VBI line (digitized waveform VBI
only)
-From 60 Hz analog (NTSC) source: Any Monochrome VBI line
-From 60 Hz SDI source: VBI FCP, Any Monochrome VBI line (digitized waveform VBI only)
Compression
Video:
Compliant with MPEG-2 4:2:0 MP@ML and 4:2:2 P@ML as defined by ISO/IEC 13818-2
Bit rate of 1 to 15 Mbps for 4:2:0 and 4 to 50 Mbps for 4:2:2
Adaptive Field/frame DCT coding
Motion compensation: Hierarchical, Field frame
Five-level hierarchical motion estimation
Far-ranging motion vector calculations
Two-pass rate control (except for ultra-low delay mode)
M=1, 2, 3 (0, 1, 2 B-frames)
GOP size N multiple of M, N≤24
Non linear adaptive Quantization (taking into account Chrominance)
Intra and non Intra Quantization Weighting Matrix
Optional:
Low and ultra-low delay modes (software option)

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.5of 12
Audio:
Compliant with ISO/IEC 11172-3 standard, MPEG-1, Layer II, sampling rate 48 KHz
Bit rate from 64 to 384 Kbps
Embedded DSC audio according to SMPTE 272-A (level A, 48 KHz)
Mode: Stereo, Joint stereo, mono and dual mono
Multiplexing
Compliant with ISO/IEC 13818-1 and ETS 300429
Bit rate from 1 to 50 Mbps
DVB & ISO tables inserter (PAT, PMT, TDT, SDT, EIT, NIT with optional satellite descriptor)
Optional:
TS ASI input
Modulation (optional)
QPSK, 8PSK and 16QAM Modulation with bit rate from 1.5 to 28 Mb/s
DVB compliant ETS 300 421 and ETS 301 210
IF (50 to 90 MHz) output
L-band output (950 to 1550 MHz) for local monitoring
External modulation can be provided as an alternate solution
Network interface (optional)
ATM/PDH or SDH network couplers with either electrical (PDH 34 or 45 Mbps) or optical (SDH
155 Mbps, single mode or multi-mode) interfaces.
Access Control (optional)
DVB common scrambling with fixed control words
(No need for external EMM/ECM injectors)

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.6of 12
Management
The DBE 4120 management can be achieved locally through the front panel keypad and LC
Display, or remotely from the TBS supervision system.
The local management performed through the front panel menu-driven interface allows to select
the proper video input (SDI, PAL, etc) and the profile (4:2:2P@ML or MP@ML) to control the
transmission parameters and to recall, store or erase up to 12 pre-set configurations. Also
controlled through the encoder front panel interface are the basic parameters of the encoder
(alarm and bit rate monitoring, reboot, delay mode, scrambling mode) and that of the optional
system components (network interface)
For remote management two possibilities are offered, depending of the specific requirements:
either with the DBS 2930 software dedicated to MPEG-2 system, or with as an embedded
SNMP agent within a Network Management System environment.
User Interface
User selection with simple front panel interface
GUI on remote station
(Software unlocking of software options)
DBE 4120 Management Software: Example of service display

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.7of 12
Product outlook
In its standard version, the DBE 4120 features the following inputs:
(see below rear panel arrangement)
-One SDI digital video (with 2 AES/EBU de-embedder)
-Two stereo or four mono analogue audio
On option, it can be complemented with back-mounted additional hardware modules:
-in extension slot 1: a card for composite video input or for 4 additional AES/EBU
audio
-in extension slot 2: a card for 4 additional audio channels, or integrated modulator, or
ATM network interface
-in extension slot 3: a card for contact closure alarming
-in the extension slot 4: a card for two AES/EBU audio channels
(see also configuration information)
Front Panel
Rear Panel
SDI IN SERIAL 1LAN SERIAL 2PCR OUT
RS 232/485 10BaseT RS 485
TS ASI IN OUT 1 OUT 2 OUT 3
I
O
T
Ph
N
SSEBAUDIO IN
ANALOG
Slot 4 Slot 1
Slot 2
Slot 3

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.8of 12
Technical Specifications
Video
-Inputs SDI (10-bit accuracy)
Composite video PAL, SECAM, NTSC
-Pre-processing Frame re-synchronizer
Image re-sizing filters full to ½ or ¼ resolution
3:2 pull down
-Video encoding MPEG2 4 :2 :2 P@ML and MP@ML
Bit rate range of 1 to 50 Mbps
Horizontal 720, 704, 544, 480, 352 pixels
Vertical (625 line) 576, 288 (525 line) 480, 240 lines
-VBI (processing) From 50 Hz analog (PAL, SECAM) source: CEEFAX B, magazine and/or
subtitles, 50 Hz VITC, VPS, Any Monochrome VBI line
From 50 Hz SDI source: CEEFAX B, magazine and/or subtitles, 50 Hz
DVITC, WSS, VPS (digitized waveform VBI only), FCP, AFD, Any
Monochrome VBI line (digitized waveform VBI only)
From 60 Hz analogue (NTSC) source: Any Monochrome VBI line
From 60 Hz SDI source: VBI FCP, Any Monochrome VBI line (digitized
waveform VBI only)
Up to 8 transparent VBI lines
Helper channel on one VBI line (option)
Audio
-Inputs Up two stereo or four mono audio extracted from SDI
Two stereo analogue audio balanced 600 Ω/18 KΩ
Up to 10 AES/EBU digital audio on XLR (with SDI only)
-Audio encoding ISO/IEC 11172-3 standard compliant, MPEG-1, Layer II
48 KHz sampling rate
18-bit accuracy
Data
-RS-232 Transparent data interface
-ASI input TS packets in data burst or data packet modes

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.9of 12
Encoder
-Low delay mode 290 ms end-to-end
-Ultra-low delay mode
140ms end-to-end
-Test generation Colour bars
Audio tone (2.1kHz)
-Encryption DVB Common Scrambling with fixed words
-Helper Channel Re-encoding data set transmissions in one VBI line
Modulation
-Input Serial ASI for DVB TS
-Outputs IF 50 – 90 MHz
L-Band 950 – 1550 MHz (for IRD monitoring)
C-Band and Ku-Band on option
-Modulation QPSK bit rate 1 to 50 (25) Mbps
8 PSK and 16QAM on option
ATM network interface option
-PDH Electrical Interfaces: Comply with ITU-T G 703
Data rate: 34.368 Mbps (E3); 44.736Mbps (DS3)
-SDH Single-Mode Optical Interfaces: Comply with ITU-T G 957 S1.1 (short haul)
Data rate: 155.520 Mbps (STM-1 & STS3c)
-SDH Multi-Mode Optical Interfaces: Data rate: 155.520Mbps (STM-1 & STS3c)
Fiber rate: 62.5/125/0.275 NA
Tributary effective bit rate versus network bit rate:
Network bit rate (Kbps) Tributaries effective bit rate (Kbps)
34,368 (E3) 29,131
44,736 (DS3) 37,967
155,520 (STM-1) 54,000 (within 128,653 Kbps.)
Control Interfaces
-Front panel Full control available using front panel LCD and keypad
12 user pre-set configurations
-Ethernet SNMP (MIB available)
DBS 2930 control & command software
-RS-485 Remote control port for third party equipment

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.10 of 12
Power Auto ranging 100-240 Vac, 50/60 Hz universal power supply
100 to 150 W, depending on equipment population
Physical Width 483mm height 88mm depth 600mm (enclosure)
Weight 16 kg standard configuration
Operating Conditions
Ambient temperature 0°C to 45°C
For fixed or mobile environments
Compliance with Standards
MPEG-2 implementation guidelines (DVB A001)
Channel coding and modulation for Satellite (ETS 300421)
Service Information (ETS 300 468, DVB A005)
Common Scrambling and Conditional Access Guidelines (ETR 289)
Asynchronous Serial Transport Stream Interface (prEN 50083-9)
CE marked in accordance with ECC low voltage and EMC directives
(EN60950, EN55022, EN50082-1)

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.11 of 12
Ordering Information
-DBE 4120 basic configurations:
Models Descriptions
N4120220AF Contribution 4120 Encoder, MP@ML and 422P@ML compression
220V AC Power Supply, V6.2
N4120220BF Contribution 4120 Encoder, MP@ML and 422P@ML compression
220V AC Power Supply, Without scrambling capacity, V6.2
N4120048AF Single Service Encoder, MP@ML and 422P@ML compression
48V DC Power supply, V6.2
N4120048BF Single Service Encoder, MP@ML and 422P@ML compression
48V DC Power supply Without scrambling capacity, V6.2
-DBE 4120 hardware options:
Models Descriptions
N41H034EAF ATM Network Interface, Electrical, 34 Mbit/s , V6.2
N41H045EAF ATM Network Interface, Electrical, 45 Mbit/s, V6.2
N41H155MAF ATM Network Interface, Optical 155 Mbit/s, Multi-mode Fiber, V6.2
N41H155SAF ATM Network Interface, Optical 155 Mbit/s, Single-mode Fiber, V6.2
N41HAMUBAF 4 additional audio inputs (AES/EBU or embedded in SDI) , V6.2
N41HATADAF 2 AES/EBU audio inputs, V6.2
N41HDPSNAF Composite video input, V6.2
N41HMODUAF Integrated modulator, V6.2
N41HMSDLAF Closure Contact Alarming , V6.2
- DBE 4120 software options:
Models Descriptions
N41SD56KAF Data injection through RS 232, V6.2
N41SDVCFAF DVB Common Scrambling/Fixed. Control Words, V6.2
N41SHCHNAF Helper Channel , V6.2
N41SLODEAF Low-delay Mode, V6.2
N41SMODCAF Newtec Modulator Control , V6.2
N41STS1NAF ASI TS Input / PCR Output , V6.2
N41SVB1PAf VBI Processing , V6.2
-DBE 4120 upgrade kit options:
Models Descriptions
N4120830AE Software upgrade kit from V6.0 to V6.1
N4120830AF Software upgrade kit from V6.1 to V6.2
-DBE 4110 documentation option:
Models Descriptions
N4120M00KF French edition of operation handbook - Release 6.2 (English version
supplied with equipment)

DBE 4120
MPEG-2 Encoder System for Contribution Configuration guide
Issued by Network Products Marketing Department
GDBD4120 - 09/1999
THOMSON broadcast systems - All rights reserved p.12 of 12
Configuration information
Hardware Configuration Possibilities
Slot
number Standard Configuration Standard Configuration + H/W optional possibilities
1 2 3 4
SEEB Card 1 SDI
2 stereo or 4
mono analogue
audio
1 SDI
2 stereo or 4
mono analogue
audio
1 SDI
2 stereo or 4
mono analogue
audio
1 SDI
2 stereo or 4
mono analogue
audio
1 SDI
2 stereo or 4
mono analogue
audio
Slot1 Composite Video 4 audio Composite Video 4 audio
Slot2 4 audio 4 audio ATM PLE
(34 or 45 Mbps) or
ATM PLO
155 Mbps
(SMF or MMF)
ATM PLE
(34 or 45 Mbps) or
ATM PLO
155 Mbps
(SMF or MMF)
Slot3 Closure Contact
Alarming Closure Contact Alarming Closure Contact Alarming Closure Contact Alarming
Slot4 2AES/EBU audio
(as alternative
audio sources)
2AES/EBU audio
(as alternative
audio sources)
2AES/EBU audio
(as alternative
audio sources)
2AES/EBU audio
(as alternative
audio sources)
ATADI Card for 2 AES /EBU audio (N41HATADA)
S/W options:
Hardware options:DPSN Card for composite video (N41HDPSNA)
or AMUSE card for 4 additional AES/EBU audio (N41HAMUBA)
SDI IN SERIAL 1 LAN SERIAL 2 PCR OUT
RS 232/485 10BaseT RS 485
TS ASIIN OUT 1 OUT 2 OUT 3
I
O
T
Ph
N
SSEBAUDIO IN
ANALOG
Slot 4Slot 1
Slot 2
Slot 3
ASI auxiliary TS input (N41STS1NA)
VBI Processing (N41SVB1PA)
Data Injection (N41SD56KA)
Low Delay and Ultra-low Delay (N41SLODEA)
DVB Scrambling / Fixed Control Word (N41SDVCFA)
Modulator Control (N41SMODCA)
422P@ML Video Encoding (N41S422PA)
ATM PLE 34(N41H034EA)
or ATM PLE 45 (N41H045EA)
or ATM PLO 155 SM ( N41H155SA)
or ATM PLO 155MM (N41H155MA)
or 4 AES/EBU audio (N41HAMUBA)
or Integrated modulator (N41HMUDUA)
MSDL Card for Closure Contact Alarming
(N41HMSDLA)