IQDNC34
Dual-channel 3G/HD-SDI Downconverter with SD-SDI and Analog Outputs
The IQDNC34 provides two channels of multirate downconversion for 3 Gb/s SDI, and HD-SDI digital video signals along with both composite and analog audio outputs suitable for monitoring applications where space is of the essence.
IQDNC34 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 with audio monitoring outputs selectable from either video channel. Video metadata such as timecode, closed captions and teletext captions can also...

FEATURES
- High-quality downconversion for SDI video inputs with composite 12-bit encoded and analog audio monitoring outputs
- 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 proc. 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
- Additional processing options including noise reduction (adaptive spatial and recursive)
- Processing for 16 channels of embedded audio present on the incoming SDI stream with no disturbance during video synchronizer frame wraps or drops
- Audio proc. 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
- Integrated SFP module supports Fiber or HD-BNC I/O, and HDMI output
- 16x user memories
- GV Orbit control and monitoring compatible
- RollTrack triggers available for detected module states including input loss and reference loss
SPECIFICATIONS
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):
- 625(576)/25i, 525(480)/29i
- 720 50/59p1080 50/59i
- 1080 50/59p level A/B
- 1080 25/29psf
Analog reference:
- 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
Composite outputs: Up to 2 per channel
Output standard: 625(576)/25i, 525(480)/29i
Audio Signal Outputs
Analog audio outputs: Up to 4 channels (selectable from either video channel)
Control Interface
GPI: 2x Closing contact I/O interface (ST) (rear panel dependent)
Conversion Functions (per channel)
Modes:
- Down conversion
- Aspect ratio conversion synchronization
Conversion processing:
- Still process: Detects still images and applies an aperture with full (progressive) vertical frequency response
- Enhanced still: Adds field motion detection to still process. Prevents artifacts on moving repetitive patterns
Aspect ratio conversion: AFD (SMPTE ST 2016), VI (RP186), WSS (L23) (manual or auto)
SD input format: Normal 4:3, Anamorphic 16:9, Letterbox 14:9, Letterbox 16:9
SD output format: Normal 4:3, Anamorphic 16:9, Letterbox 14:9, Letterbox 16:9
Metadata:
- Closed caption CE608 <> CE708
- Timecode conversions
- Teletext subtitles WST/RDD8 conversion
Audio Functions
Analog audio: Four channels (two pairs) of analog outputs, separately assignable to any processing channel
Headroom: +24 dBu, balanced connection
Level adjustment: +12 dB to +24 dB (+18)
Analog Audio Routing
Output Pair 1-2: Select from configured embedded audio output pairs (Ch1: 1-8, Ch2: 1-8)
Audio Functions (per channel)
Embedded audio:
- 16-channel embedded audio processing
- PCM audio processing includes channel level gain and delay compensation, as well as channel level routing with L/R swap and phase invert feature
- 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
- Enable/Blank
Embedded Audio Routing
Processed pair 1-8: Disembed 1-8
Output Channels 1-16: Processed pair 1-8, Tone, Silence
Processed Audio Control
Invert phase channels: 1-16
Pair 1 to 8 Gain L/R: +18 dB to -18 dB in 0.1 dB steps
Pair 1-8 Manual Delay: -40 to +200 ms in 1 ms steps
Global Manual Delay: -40 to +200 ms in 1 ms steps
Tone
Frequency: 100 Hz to 10 kHz in 100 Hz steps
Processing Functions (per channel)
Ancillary data: Pass/Strip
Freeze: On/Off
Legalizer: On/Off
Genlock: Reference lock, Input lock (same format), Free run
Pattern: Off, Black, Ramp, Bars
Proc amp
Black Level: +100 to -100 mV (0) in 0.8 mV steps
Contrast: -6 dB to +6 dB (0) in 0.2 dB steps
Saturation: -6 dB to +6 dB (0) in 0.2 dB steps
Y Gamma: 0.4 to 1.7 (1) in 0.1 steps
YC Offset: -20 to 20 (0) in 2 Luma pixel steps
Note: Defaults shown in brackets
Enhancement
Nonlinear enhancer:
- Frequency band selection: Low, Med, High
- Four preset enhancement modes: Low, Med, High, Super
- Manual enhancement mode with H Gain and H Noise rejection levels
Conversion Aperture
Vertical:
- Frequency Band Selection: Low, Med, High
- Five vertical preset enhancement levels: Soft 2, Soft 1, Normal, Sharp 1, Sharp 2
Horizontal:
- Five horizontal preset sharpness levels: Low 2, Low 1, Normal, High 1, High 2
- Five horizontal preset detail levels: Soft 2, Soft 1, Normal, Sharp 1, Sharp 2
Other Controls
GPI input low/high select: Black, Freeze, Pattern, User Memories 1-16
GPI output: Source Black, Freeze, Pattern
User memories: 16x Save, Recall, Rename
Memory naming: User configurable naming of memories 1 – 16
RollTrack index: Up to 50 RollTrack destinations
RollTrack sources: Unused, Input Present (1&2), Input Loss (1&2), Reference OK & Loss
Information window: Video Input Status, Reference Status
Factory default: Resets all module settings to factory specified default values and clears memories
Default settings: Resets all module settings to factory specified defaults but does not clear memories
Module information: Reports following module information – software version, serial number, rear panel ID, frame slot
General Specifications
Electrical: 3 Gb/s SDI, SMPTE ST 424 1.5 Gb/s HD-SDI, SMPTE ST 292 270 Mb/s SDI, SMPTE ST 259-C
Connector/format: BNC/75Ω panel jack on standard IQ connector panel
Return loss: >-15 dB (270 Mb/s, 1.5 Gb/s) >-10 dB (3 Gb/s)
Output jitter: SD-SDI 0.2 UI (10H z) / 0.2 UI (1 kHz)
Reference source: External – HD tri-Level/SD bi-level/input video syncs
Electrical:
- Black (HD tri-level and SD bi-level) and Black Burst (SD bi-level)
- SD bi-level – RS170A
- HD Tri-level – SMPTE ST 240 and SMPTE ST 274
Connector/format: BNC/75Ω panel jack on standard IQ connector panel
Embedded audio handling
- HD – 24-bit synchronous 48 kHz to SMPTE ST 299
- SD – 20-bit synchronous 48 kHz to SMPTE ST 272-A
Power Consumption
Module power consumption: 14.5 PR (B Frames)
MEDIA GALLERY



ORDERING INFORMATION
IQDNC3400-1B3
Dual-channel downconverter with analog I/O. 2 SDI inputs, reference inputs from enclosure, 1 SDI outputs per channel, 1 composite output per channel, 2 analog audio outputs
IQDNC3401-2B3
Dual-channel downconverter with analog I/O. 2 SDI inputs, external reference loop & enclosure reference inputs, 2 SDI outputs per channel, 2 composite output per channel, 4 analog audio outputs
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-LC – Software option to upgrade with linear frame rate conversion for one processing channel
IQOPTM-UDC – Software option for upgrade to up, down and cross conversion for one processing channel
Note: Only single-channel LC and UDC licenses can be loaded. Unit supports dual or single NR licenses