The IQDNC31 provides two channels of multirate downconversion for 3 Gb/s SDI and HD-SDI digital video signals. Using high-quality motion adaptive de-interlacing and flexible scaling technology, the IQDNC31 is a broadcast-quality conversion module ideal for space constrained applications requiring downconversion to maintain SD output feeds.
IQDNC31 includes frame synchronizers, capable of referencing to a SD bi-level or HD tri-level reference and independent variable aspect ratio converters with frame accurate reading and writing of WSS, VI and 2016 AFD signaling. Audio handling includes audio channel routing, delay adjustment and level controls. Video metadata such as timecode, closed captions and teletext captions can also be passed through the module or processed according to the required output standard.
High-quality downconversion for SDI video inputs including conversion aperture control
Frame synchronizer with HD tri-sync/SD bi-level reference input and input loss detection
Aspect ratio conversion including preset ARC maps relative to conversion modes, selectable pan, tilt, aspect, size, and output crop adjustments
Aspect ratio control (signaling reading and writing) using ETSI WSS and AFD Video Index signaling (RP186, SMPTE ST 2016)
Video processing features include: gain, offset, hue, horizontal and vertical picture enhancement, and RGB gamut legalization
Metadata support — Closed caption passing or processing for CEA608/708, and WST/OP42 and OP47 teletext captions, and VITC or SMPTE ST 12 timecode translation
Built-in test pattern generator and 19 character scrolling caption generator
Additional processing options including; noise reduction (adaptive spatial and recursive), side-bar keying and linear frame rate conversion
Processing for 16 channels of embedded audio present on the incoming SDI stream with no disturbance during video synchronizer frame wraps or drops
Audio processing features including: channel routing, gain, invert, delay and tone generator
Non-PCM processing features pair level routing and delay compensation. Dolby-E data is passed with a delay to match the video and with co-timed audio frame drop or repeat
Dolby E support — Detection of PCM/non-PCM audio to SMPTE ST 337/338, pair routing and Dolby E header re-alignment
16x user memories and 2 GPI/O ports
RollCall control and monitoring compatible with standard logging and reporting features
RollTrack triggers available for detected module states including input loss and reference loss
Inputs & Outputs Video Signal Inputs
SDI inputs: 2x
Input cable length:
Up to 80m Belden 1694A @ 3 Gb/s
Up to 120m Belden 1694A @ 1.5 Gb/s
100m typical (with output set to 1080p rates), Belden 1694A @ 270 Mb/s
Input standard (auto detect):
720 50/59p1080 50/59i
1080 50/59p level A/B
1x analog reference with passive loop-through
Black (HD tri-level and SD bi-level) and Black Burst (SD bi-level)
SD bi-level – RS170A
HD tri-level – SMPTE ST 240, SMPTE ST 274
Video Signal Outputs
SDI outputs: up to 5 (3 from Channel 1, 2 from Channel 2)
Output standard: 625(576)/25i, 525(480)/29i
For more details on enclosure types please refer to the IQ Modular Enclosures datasheet.
Software Options IQOPTM-2NR – Software option to add noise reduction on both channels IQOPTM-2SBK – Software option to add side-bar keying on both channels IQOPTM-2LC – Software option to upgrade with linear frame rate conversion on both channels IQOPTM-2UDC – Software option for upgrade to up, down and cross conversion for both processing channels IQOPTM-2LOG – Software option to add Logo insertion on both processing channels
Note: Single channel licenses can also be loaded
IQDNC31: Dual-channel 3G/HD-SDI Downconverter with Frame Synchronizer Datasheet
The IQDNC31 from Grass Valley, a Belden Brand, provides two channels of multirate downconversion for 3 Gb/s SDI and HD-SDI digital video signals. Using high-quality motion adaptive de-interlacing and flexible scaling technology, the IQDNC31 is a broadcast-quality conversion module ideal for space constrained applications requiring downconversion to maintain SD output feeds.
Posted May 08 2019 (GVB-2-0794A-EN-DS) File Size: 205.6 KB
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