HD Downconverter

The Ensemble-Designs 7920 module has an HD SDI input and four outputs that can be configured as two SDI and two composite outputs, or four SDI outputs. Whether it's providing digital feeds to production switchers and routers or analog monitoring, the 7920 is right at home.

The Downconversion process includes Picture Detail Enhancement and Anti-Alias Filtering, which make for a pristine SD output. The Aspect Ratio Conversion process offers Resizing and Repositioning with choices for: Letterbox, Anamorphic, Crop and Zoom. The 7920 automatically adjusts from HD to SD color space and gamma. Proc amp controls are provided in the form of Video, Chroma and Pedestal.

The Avenue 7920 can be configured locally or controlled and configured remotely with Avenue Touch Screens, Express Panels, or Avenue PC Software. Alarm generation, configurable user levels, module lock out, and customizable menus are just some of the tools included in the Avenue Control System.

• Downconverter for 720p, 1080i, 1080sF and 1080p
• Proc Amp and Frame Sync
• 16 bit processing
• Accepts asynchronous signals
• Reference input – output is timeable
• Automatically adjusts between SD/HD color space and gamma
• Anti-Alias Filter and Picture Detail Enhancement
• All processing performed in progressive
• Passes closed captioning
• Auto detection of input standard and frame rate
• 3:2 pulldown
• Built-in test pattern and tone
• Audio Mux/Demux optional
• Audio Automatic Gain Control optional
• Add audio sub module for delay and processing
• Occupies one slot in frame, even with audio option

Serial Digital Input

Number One

Signal Type HD Serial Digital 1.485 Gb/s, SMPTE 274M, 292M or 296M

Impedance 75 Ω,BNC

Return Loss >15 dB

Max Cable Length 1.485 Gb/s 100 meters

Automatic Cable Input Equalization

HD Standards Supported

1080i 50, 59.94 or 60 Hz, SMPTE 274M -4,5,6 720p 50, 59.94 or 60 Hz, SMPTE 296M -1,2,3 1080p 23.98, 24 or 25 Hz, SMPTE 274M -9,10,11 1080sF 23.98, 24 or 25 Hz, RP211 -14,15,16

Serial Digital Output

Number Four max

Signal Type SD Serial Digital 270 Mb/s, SMPTE 259M (Both 525 and 625 SD standards)

Impedance 75 Ω

Return Loss >15 dB

Output DC None (AC coupled)Delay Adjustable from 1 field to 1 frame

Reference Input

Number Two: One external (modules BNC) One internal (frame master ref BNC)

Signal Type PAL or NTSC composite video or Tri-Level Sync

Return Loss >40 dB (applies to external ref input)

Analog Output

Number Two max (BNCs shared with SD SDI outputs)

Signal Type PAL or NTSC composite Standard matches SDI output

Impedance 75 Ω

Return Loss >40 dB

Output DC <50 mV

Bit Resolution 12 bit output reconstruction 8 x oversampling

Signal to Noise >65 dB

Frequency Response ±0.1 dB, 0 to 5.5 MHz

K Factor <1%

Differential Phase <1 degree

Differential Gain <1%

Conversion Directions

Downconversion from 1080i/59.94, 720p/59.94, 1080p/23.98, 1080sF/23.98 to 525 (NTSC) or 1080i/50, 720p/50, 1080p/25, 1080sF/25 to 625 (PAL)

AES/EBU Digital Inputs (with 8415 sub module option)

Number Four (total of eight channels)

Signal Type AES3id

Connector Coaxial, 75 Ω

Bit Depth 20 and 24 bit

Sample Rate 30 kHz to 100 kHz (sample rate converted internally to 48 kHz)

Crosstalk <144 dB

Dynamic Range >144 dB

Reference Level -18 or -20 dBFS (selectable)

AC-3, Dolby E Supported when inputs are synchronous

Embedded Inputs

Number Four AES Streams (from video input) Eight channels from any two of four groups Selectable to any of four groups

Channels Eight

Bit Depth 20 and 24 bit

AES/EBU Digital Outputs

Number Four (total of 8 channels)

Signal Type AES3id

Connector Coaxial, 75 Ω

Bit Depth 20 and 24 bit

Sample Rate 48 kHz, synchronous to Video output

Reference Level -18 or -20 dBFS (selectable)

Embedded Output

Number Four or two depending on configuration

Group Assign Cascade or Replace any two of four groups

Channels Eight

Bit Depth 24 bit

General Specifications

Power Consumption 10 watts

Temperature Range 0 to 40°C ambient (all specs met)

Relative Humidity 0 to 95%, noncondensing

Altitude 0 to 10,000 ft