Lynx Technik yellobrik CHD 1812-1 HDMI to SDI Converter with Frame Synchronizer

The Yellobrik CHD 1812-1 is a versatile and compact HDMI to SDI converter with an integrated frame synchronizer, designed to provide a fully synchronized SDI input from an external asynchronous HDMI source. It supports SD, HD, and 3G-SDI formats, ensuring compatibility with a wide range of professional video equipment. The flexible reference sync input accepts any analog video sync format, including SD bi-level sync, black burst, color bars, and tri-level HD sync, and is fully cross-lock compatible. The module also features two external analog audio inputs, which can be embedded into any AES channel, with options for professional balanced or unbalanced consumer line-level audio. By default, any audio present in the HDMI stream will be embedded into the SDI output, or it can be replaced with external audio signals. The CHD 1812-1 is compatible with the yelloGUI software package, providing access to additional internal settings, including adjustable video delay for timing purposes. An optional SDI fiber output is also available via a variety of plug-in SFP modules.

Key Features

• Supports SD/HD/3G-SDI formats
• 3D support
• Integrated frame synchronizer
• Multi-format sync reference input - cross-lock compatible
• 2 x SDI outputs with optional SDI fiber output
• HDMI embedded audio passed transparently
• 2 x external analog audio inputs
• Professional balanced analog audio inputs or unbalanced line-level audio inputs
• Selectable AES channel for embedding external audio
• HDMI, reference, and audio present LED indication
• Compatible with LynxCentraal and yelloGUI for additional internal settings

Technical Specifications

Video Formats

• SD-SDI: SMPTE 259M
• HD-SDI: SMPTE 292M
• 3G-SDI: SMPTE 424M

Video Input Digital

• 1x HDMI Type A connector
• 3D compatible input
• Supports up to 8 channels of embedded audio in HDMI, passed transparently or replaced with external analog audio input

Reference Input

• SDTV: Analog 525 or 625 bi-level sync, black burst, or color bars
• HDTV: All tri-level sync standards (exceptions 1080p 50/59.94/60Hz)
• Cross-lock compatible
• SMPTE 274M, SMPTE 296M - 75 Ohm BNC connector

Frame Synchronizer

• Functional if valid reference is detected; otherwise operates in free-run (asynchronous) mode
• External audio and HDMI input are frequency locked to external reference, fully cross-lock compatible across standards
• One frame adjustable delay (in line and pixel increments) using yelloGUI

SDI Outputs

• 2 x SDI video, 75 Ohm BNC (both outputs carry the same signal)
• SMPTE 424M, SMPTE 292M, SMPTE 259M
• 3G Level A & B-DL & B-DS according to SMPTE ST 425-1 and ST 425-2 (3D) with image formats 1280 x 720 and 1920 x 1080

Fiber Output

• Optional plug-in SFP for optical SDI output

Audio Inputs

• Left and right analog audio using 3.5mm jack plugs
• 10k Ohm differential balanced input mode with selectable full-scale levels (24, 22, 20, 18, 15, 12 dBu, and user-definable)
• Unbalanced mode with line level at -10 dBV
• Selectable AES channel for audio embedding (channels 1 through 8)
• Frequency response: <+/- 0.1dB 20Hz to 20kHz
• 48kHz A/D sample rate (frequency locked to SDI output)

Power

• +12V DC @ 4W nominal (supports 10 - 14V DC input range)

Physical

• Size (including connectors): 123mm x 90mm x 22mm (4.84” x 3.54” x 0.86”)
• Weight: 175g (6.17oz)

Ambient

• Operating temperature: 5 - 40ºC (41 - 104ºF)
• Humidity: 90% (non-condensing)