
EN-31 Encoder
Adtec Digital’s EN-31 is a dual channel, hardware-based distribution encoder with flexible transport options.
With a low power footprint, the EN-31 inherits Adtec’s broadcast quality compression, advanced feature set, service performance and reliability in a dense platform targeted towards high-value applications.
The EN-31 supports ASI remuxing, VBI processing and eight channels of audio encoding per video service. In addition to encoding MPEG 1 Layer 2 audio, the EN-31 also encodes Dolby Digital, AAC-LC and HE-AAC (v1/v2) mixed mode audio, including stereo (2.0) and multi-channel surround (5.1) modes.
Feature Highlights
- Copper and CVBS Video Interfaces
- Automatic SD and HD Detection
- Eight Channels of Audio Encoding Via Embedded SDI and AES Inputs
- Multiple Transport Stream over IP Protocols Including:
- RTP, UDP, RTMP and Zixi
- ASI Input for External Transport Stream Multiplexing
- MP1L2, DD, AAC-LC, HE-AAC (2.0 and 5.1)
Two or more units may be cascaded to increase channel density with the ASI remultiplex feature.
The EN-31 encodes two services, multiplexes them into an MPTS and concurrently transports it via ASI, IP, and optional RF.
The DVB-S/S2 capable modulator supports both IF-Band and L-Band with 10MHz L-Band insertion and Carrier ID.
The EN-31 encodes two services, multiplexes them into an MPTS and concurrently transports it via ASI, IP, and optional RF.
The DVB-S/S2 capable modulator supports both IF-Band and L-Band with 10MHz L-Band insertion and Carrier ID.

Applications
- Tier Two/Three Dedicated ASI, IP, and RF Contribution
- DSNG
- Private and MSO Cable Systems
- ATSC Distribution
- Campus, Hospitality, and Education markets
- Contribution over IP
The EN-31 can be purchased with or without the integrated modulator and offers multiple feature keys for flexibility and future-proofing. Please contact your sales representative for more details about these features and how they can be enabled on your device.
Audio Encoding:
Unique support for MPEG1 Layer 2, Dolby Digital (AC3) 2.0 / 1.0 / 5.1 modes, AAC-LC & HE-AAC (v1 and v2)
Transport Delivery:
Unique support for ASI-Remuxing, RTMP & Zixi IP Streaming.
Modulation:
Unique support for 8PSK, 16APSK, 32APSK, DVB-CID, 36Mbaud & 68Mbaud.
Audio Encoding:
Unique support for MPEG1 Layer 2, Dolby Digital (AC3) 2.0 / 1.0 / 5.1 modes, AAC-LC & HE-AAC (v1 and v2)
Transport Delivery:
Unique support for ASI-Remuxing, RTMP & Zixi IP Streaming.
Modulation:
Unique support for 8PSK, 16APSK, 32APSK, DVB-CID, 36Mbaud & 68Mbaud.
Experiment with our on-line demonstration unit.
For on-site demonstrations, contact our sales team for more information. >>
For on-site demonstrations, contact our sales team for more information. >>