
GUIDE TO INSTALLATION AND OPERATION
1 IRD-3111 SD MPEG Decoder with ASI and RF inputs
1.1 Using this Manual
The IRD-3111 comes in three versions:
IRD-3111-VQ
ATSC Tuner
IRD-3111-DVB-S2
DVB-S2 Tuner
IRD-3111-DVB-S2-CI
DVB-S2 Tuner with Conditional Access Module
All three are described in this manual. For convenience, any description that applies to all three variants will use the
term IRD-3111. Descriptions that apply exclusively to specific versions will use the more detailed version name as
given above.
THIS MANUAL DESCRIBES FEATURES ASSOCIATED WITH IRD-3111 FIRMWARE VERSION 3.25
1.2 Introduction
The IRD-3111 combines RF demodulation and MPEG-2 decoding of ASI transport streams to SD video. It also offers
processing of key video and audio parameters, and signal probing functions for feed aggregation, distribution, and
monitoring applications by broadcasters and TV service providers.
DVB-ASI, ATSC off-air or DVBS/S2 satellite signals fed to the IRD-3111 can be demodulated and decoded to provide
SD video with embedded multi-channel audio, in all leading formats, as well as composite video and stereo analog
audio for monitoring. The IRD is also available with a DVB-CI slot, supporting leading Conditional Access Systems,
and allowing descrambling of multiple encrypted services. With its optional Gigabit Ethernet port, the IRD-3111 can
also act as a gateway, by performing IP encapsulation of the input transport stream in either RTP or UDP mode.
The IRD also provides optional video signal processing with frame synchronization and selectable delay as well as
proc-amp, up conversion and aspect ratio conversion. The IRD can decode an extensive range of Metadata, such as
CEA-608 compliant Closed captioning, Teletext, AFD, V-chip and DVITC Time Code, which can be embedded in the
decoded SDI signal. Transport Stream Metadata, such as PSIP can also be analyzed.
The audio processing capabilities of the IRD-3111 are also extensive, with dual audio decoding and selectable stereo
downmix modes of decoded MPEG-1 and Dolby Digital (AC-3) 2.0 audio. Optionally, the IRD-3111 also performs
embedding of decoded of Dolby Digital (AC-3) 5.1 audio, with discrete 8-channel output.
In addition, the IRD-3111 performs a wide range of signal quality probing, with user-defined alarm settings on an
extensive range of transport stream parameters, including TR 101290 alarms, transport stream structure analysis and
individual program statistics.
1.3 Features
Input/Output Versatility
•
Single ATSC 8VSB or DVB-S/S2 RF input
•
Single ASI transport stream input
•
Single ASI transport stream output for signal monitoring or retransmission
•
Optional IP transport stream output: an ASI signal can be re-transmitted as IP
•
IRD acts as IP video gateway with forward error correction (FEC) for improved quality
•
Dual SD SDI outputs (HD/SD SDI with up-conversion option)
•
Composite video and stereo analog audio monitoring outputs
IRD-3111 |
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