The 7812DCDA2Q is a high density, dual path down-converter with integrated distribution amplifiers. -HD versions convert common HD/SMPTE ST 292 video signals to common SD/SMPTE ST 259 video signals. -3G versions support 3G/SMPTE ST 424 inputs. Each processing path simultaneously provides re-clocked copies of program inputs and SD program outputs. These modules support frame synchronization and external genlock inputs (card or frame reference) for video timing adjustments.
SD program outputs are configurable to be either NTSC/PAL or SMPTE ST 259 compliant. High quality and color frame locked NTSC/PAL outputs are generated using 12 bit composite encoders.
High quality and sharp SD outputs are generated using Evertz's proprietary scaling technology. These modules provide standard as well as user defined ARC modes. The 7812DCDA2Q series also supports AFD (SMPTE ST 2016) based steering of ARC modes and can stamp AFD signals on output video. Transitions between ARC modes based on AFD metadata are frame accurate and glitch free. Full broacast quality color correction engines are integrated into the these modules. RGB color legalization and ITU Rec. 709 →601 color space conversions are also supported.
Embedded audio on incoming video signals is de-embedded (16 channels) and re-embedded onto the SD outputs with audio delay matching video delay. Additional audio delay is also available. Audio proc is supported including per channel audio gain, channel swapping and inversion controls. Surround sound (5.1 PCM) to stereo (LtRt or LoRo) down-mixes are supported. With -AA variants, 4x analog audio outputs are available for each processing path. With -AES4 variants, two AES (4x mono) digital audio outputs are available for each processing path.
The 7812DCDA2Q series transport closed captioning and time code information from input to output with all required data translations and time code recalculations taking place.
Features
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Specifications
| Program Inputs | |
|---|---|
| Number of Inputs | 1 per path |
| Standard | SMPTE ST 292-1/SMPTE ST 259 (-HD) SMPTE ST 424/SMPTE ST 259 (-3G) |
| Connector | DIN 1.0/2.3 |
| Impedance | 75Ω |
| Return Loss | > 15dB @ 1.5GHz > 18dB @ 270MHz |
| Cable EQ | > 400m @ 270Mb/s > 140m @ 1.5Gb/s Reference Belden 1694 cable |
| DA Program Outputs | |
|---|---|
| Number of Outputs | 4 per path |
| Connector | DIN 1.0/2.3 |
| Impedance | 75Ω |
| Signal Level | 800 mV |
| DC Offset | 0V ±0.5V |
| Rise/Fall Times | 740ps SD-SDI / 270ps HD-SDI |
| DA2A | Configurable as 6Hz input |
| DA4A | Configurable as REF Input Bi-level NTSC/PAL black ref only |
| SD Program Outputs | |
|---|---|
| Number of Outputs | 4 per path |
| Standards | Software configurable as NTSC/PAL or SD-SDI |
| Connector | DIN 1.0/2.3 |
| Impedance | 75Ω |
| Return Loss | > 15dB to 1.5GHz |
| SDI Signal Level | 800 mV |
| SDI DC Offset | 0V ±0.5V |
| SDI Rise/Fall Times | 740 ps nominal SD-SDI |
| NSTC/PAL Encoder | 12 bit encoding engine |
| NTSC/PAL Frequency Response | < 0.1dB to 4.1MHz |
| NTSC/PAL DP | < 0.5° |
| NTSC/PAL DG | < 0.5% |
| NTSC/PAL SNR | > 75dB |
| NSTC/PAL Level | 1.0V p-p nominal |
| NTSC/PAL Impedance | 75Ω |
| Analog Audio Outputs | |
|---|---|
| Number of Outputs | 4 per path |
| Connector | Removable terminal strip |
| Impedance | 66Ω max |
| Output Loads | Hi Z |
| Sampling Frequency | 48kHz |
| Frequency Response | ±0.1dB (20Hz to 20kHz) |
| AES Audio Outputs | |
|---|---|
| Number of Outputs | 2 per path |
| Impedance | 75Ω |
| Sample Rate | 48kHz |
| Signal Level | 1V p-p |
Ordering Information
| 7812DCDA2Q-HD | Dual Channel HD Down-Converting Distribution Amplifier |
|---|---|
| 7812DCDA2Q-HD-AA | Dual Channel HD Down-Converting Distribution Amplifier with Analog Audio Outputs |
| 7812DCDA2Q-HD-AES4 | Dual Channel HD Down-Converting Distribution Amplifier with AES Audio Outputs |
| 7812DCDA2Q-3G | Dual Channel 3G/HD Down-Converting Distribution Amplifier |
|---|---|
| 7812DCDA2Q-3G-AA | Dual Channel 3G/HD Down-Converting Distribution Amplifier with Analog Audio Outputs |
| 7812DCDA2Q-3G-AES4 | Dual Channel 3G/HD Down-Converting Distribution Amplifier with AES Audio Outputs |
| Ordering Options | |
|---|---|
| Notes | • Rear plate must be specified at time of order - eg: [model]+3RU |
| Rear Plate Suffix | |
|---|---|
| +3RU | 3RU rear plate for use with 7800FR, 7801FR or 7700FR-C Multiframes |
| Enclosures | |
|---|---|
| 7800FR | 3RU Multiframe which holds 15 modules |
| Accessories | |
|---|---|
| 7700FC | VistaLINK® Frame Controller |
| CP-2116E-H | Remote Control Panel |
| CP-2232E | Remote Control Panel |




