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IQDNC34 Dual 3G/HD Down Converter with SDI & Analog OP's

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
  • RollCall control and monitoring compatible with standard logging and reporting features
  • 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)

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-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-UDC –
Software option for upgrade to up, down and cross conversion for one processing channel

IQOPTM-2LOG –
Software option to add logo insertion on both processing channels

Note: Single channel licenses can also be loaded

DOCUMENTS & DOWNLOADS

DATASHEETS

IQDNC34: Dual-channel 3G/HD-SDI Downconverter with SD-SDI and Analog Outputs Datasheet

The IQDNC34 from Grass Valley 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.

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DOCUMENTATION LIBRARY

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