Adtec EN91 HD & SD Ultra Low Latency AVC Encoder-Modulator

The Adtec EN91 is an ultra-low delay MPEG 4 AVC/H.264 high definition encoder.

EN91 Applications

• DSNG (ultra-low, low and normal delay)
• Tier One Contribution
• 3D Discrete Contribution
• High Efficiency Trunking (JPEG replacement)
• Distribution

The ultra-low delay mode requires the use of Adtec’s RD60 IRD and delivers picture-to-picture services in 100 milliseconds; The EN91 standard delay mode is fully interoperable with other IRDs making it ideal for mission critical trunking and ad-hock applications. MPEG 4 AVC/H.264 is significantly more efficient than JPEG making it the CODEC of choice for multiplexed and bandwidth sensitive applications; AVCs inherent interoperability significantly adds to the value of solutions based on this industry standard.

The lightweight, 10 pound or 4.5 Kilo EN91 offers amazing features and specifications in its 1 RU chassis, including redundant AC power supplies, enhanced control and monitoring via its front-panel, a browser and SNMP; video support includes SD, 2D-HD and 3D AVC 422, sixteen channels of phase aligned audio, robust VBI support, reliability and easy of use all for an extraordinary value. In addition to encoding phase aligned audio, the EN91 pass-through support includes PCM, DolbyE (16 and 20 Bit) and Dolby AC3 (2.0 and 5.1).

The EN91 encodes and concurrently transports services via ASI, IP and DVBS/S2. The DVBS/S2 modulator is available in IF or L-band with modulation modes ranging from QPSK up to 32APSK based on software licenses.

EN91 Features

• Automatic SD and HD detection
• AVC 422 Video encoding
• Sixteen (16) channels of phase aligned audio encoding
• Time Code, Captions, Teletext and other VBI support
• Redundant Power Supplies
• Front Panel, Web UI, SNMP control and monitoring
• DVBS/S2 modulation with IF or L-Band
• Modulation modes from QPSK to 32APSK
• ASI and IP Transport (IP supports SMPTE 2022 FEC)

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ADTEC RD-60 High Definition Integrated Receiver Decoder (IRD)

The ADTEC RD-60 Integrated Receiver Decoder supports MPEG 2 and MPEG 4 AVC/H.264 platforms with 420 and 422 high and standard definition decoding.

The RD-60 decodes both MPEG 2 and MPEG 4 AVC/H.264 video with 4:2:0 and 4:2:2 chroma sampling. It boasts four pairs of stereo audio including MPEG 1 Layer 2, Dolby AC3/5.1, HE-AAC, AAC-LC audio decoding. Passthrough support includes PCM, DolbyE/2.0/5.1 and Linear Acoustic Stream Stacker. The RD-60 supports redundant AC or DC dual-power supplies, enhanced control and monitoring via SNMP and browser. Standard inputs include IP and ASI with optional dual DVBS/S2 tuner demodulator supporting Q/8PSK. An optional high end Newtec DVBS/S2 tuner demodulator supporting QPSK up to 32APSK is available.

…for more Integrated Receiver/Decoders (IRDs)

Adtec Encoders Send Four Concurrent GIGE Routes per Destination

Adtec’s HD422 Encoders can send Four CONCURRENT (same time) GIGE routes (IP destinations) of the transport stream with unique configuration and FEC (SMPTE 2022) setting per destination! These routes are concurrent with ASI operational and internal constant capture with the hard drive if the TS rate is lower than 40 Mbs (old PATA hard drive limitation).

Adtec HD422 can encode four (4) MPEG 1 Layer 2 {they even support phase alignment of the MPEG 1 Layer 2 audio allowing surround sound without external processors when using the Tandberg TT1290 IRD}. Encoding also supports two (2) Dolby AC3 and two (2) MPEG 1 Layer 2 or any combination up to two each. Example, Encode one (1) Dolby AC3 and encode three (3) MPEG 1 Layer 2 audios.

Adtec can passthrough Dolby AC3/5.1/E, LPCM and Linear Acoustic E2. Passthrough support is via SDI and or AES. We can passthrough up to two (2) compressed Dolby (AC3/5.1/E) or Linear Acoustic E2 or two (2) SMPTE 302M (LPCM) audio streams. Dolby E, E2 and LPCM each take 2.308 Mbs.

Throughput for the 2.308 data rate:
Dolby E supports 4×2 or 5.1+2 (8 channels)
LPCM supports stereo audio (2 channels)
Linear Acoustic Stream Stacker E2 supports two (2) sets 4×2 or 5.1+2 or a total of sixteen (16) channels. E2 is equivalent to two (2) Dolby E boxes.
Base model NTT 9100 can pass one SMPTE 302M (nomenclature they use for Dolby E) and encode 2 MPEG 1 Layer 2. By adding NTTs additional audio board, they can pass two (2) SMPTE302M and even claim to pass four (4) with a very unique method with no audio encode capabilities with either two (2) or four (4) Dolby E passthrough. NTT is limited to TWO PIDs total when in passthrough mode. They claim they can passthrough four (4) Dolby E by combining two Dolby E payloads per AES3. This requires external audio processing to mix two Dolby E payloads onto a 96 Khz AES3 interface and requires sharing a single PID for two (2) Dolby E payloads. NTTs four (4) Dolby E passthrough lacks interoperability and Adtec deems it as very fragile because there is no control or monitoring at the transport layer nor lip sync adjustment per Dolby E stream; they are grouped in pairs of Dolby E. Simply put, they adjust the PID therefor both audios get the same adjustment. I would argue that Adtec and NTT can both passthrough two (2) Dolby E payloads. The Adtec advantage is the ability to pass two (2) and still encode two (2) MPEG 1 Layer 2 audios.

…for more on MPEG Encoders

ADTEC DTA-3050 Multiplexer

The ADTEC Digital DTA 3050 Multiplexer harbors 10 ASI inputs, each supporting wire speed, a three-way mirrored ASI output, GIGE, and optional SMPTE-310.

Digital television service operators wishing to aggregate and process MPEG, ATSC, Digicypher, or DVB based services for traditional (satellite, cable, terrestrial) services will find the ADTEC DTA3050 ideal.

Redundancy for ASI and SMPTE-310 is supported with an intelligent built in relay-bypassed switch. The ADTEC DTA-3050 is IPTV and BBTV ready today, it supports multicast and unicast configurations including SPTS/UDP, MPTS/UPD, MPEG and DVB tables. Encryption support includes DVB-CSA with Ethernet Simylcrypt, AES for use with Simylcrypt compatible Conditional Access management Servers (CAS) vendors. The DTA 3050 is ideal for traditional and next generation television networks.

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