CHD 1412

12G (4K) HDMI to SDI Converter + Frame Synchronizer


Analog Audio, De-embedder, Fiber, HDMI, SDI 1.5G, SDI 270MBit, SDI 3G


Product Documentation



  • Supports 12G / 6G / 3G / 1.5G / SD-SDI Signals
  • 3G-SDI Level A And Level B Support
  • Integrated Frame Synchronizer
  • Multi-Format Sync Reference Input – Cross Lock Compatible
  • 2 x SDI Outputs with Optional SDI Fiber Output
  • HDMI Embedded PCM Audio Passes Transparently
  • Balanced Analog Audio, Unbalanced Line Level Audio, Or AES Input
  • Selectable AES Channel for Embedding External Audio
  • HDMI, Reference and Audio Present LED Indication
  • LynxCentraal & yelloGUI Compatible for Additional Internal Settings



The CHD 1412 is a versatile and compact HDMI to SDI converter with integrated frame synchronizer. It is an ideal solution for any application which requires a fully synchronized SDI input from an external asynchronous HDMI source.

The flexible reference sync input will accept any analog video sync format including SD bi-level sync, black burst, colorbars and tri-level sync. The sync input is auto detecting and fully cross lock compatible. For example: An SDTV reference can be used to frequency lock an HD HDMI input. If no reference is present, the converter performs a standard asynchronous HDMI to SDI conversion. It can also lock to the HDMI input. A pair of stereo analog inputs can be embedded into any AES channel. Audio inputs can be either professional balanced audio with selectable full scale level, or unbalanced consumer line level audio. By default any PCM audio present in the HDMI stream will be embedded into the SDI output [encoded audio such as AC3 / DD+ etc. is not supported] or it can be replaced with the external audio signals.

The module is also compatible with LynxCentraal and yelloGUI software packages, which provide access to a host of additional internal settings including adjustable video delay for timing purposes.

An SDI fiber output is also provided with a variety of plug in SFP options available.

Note: For legal reasons, HDMI capture devices from LYNX Technik AG are designed not to capture, convert or transmit video or audio from HDCP copy-protected sources (e.g. Satellite receivers, Cable receivers, etc.).



RFR 1000 yellobrik central power connectors

RFR 1200

yellobrik 19″ 1RU Rack Frame

XLR 1000 yellobrik XLR power adapter cable

XLR 1000

4 Pin XLR Camera Battery Adapter Cable

Ordering Information

UPC / EANModelDescription
4250479328112CHD 141212G HDMI to SDI Converter
4250479329041RFR 12001RU 19" Chassis for 14 yellobriks
4250479315013RFR 1001 Single Module Mounting Bracket
4250479314016P-TAP 1000P-TAP Battery Power Adapter Cable
4250479314009XLR-1000 4 Pin XLR Battery Power Adapter Cable
Fiber Options
4250479325036OH-TX-12G-LC12G SDI Fiber Transmitter (LC)
4250479327528OH-TX-12G-ST12G SDI Fiber Transmitter (ST)
CWDM Fiber (TX)
4250479325630OH-TX-12-1270SDI TX Fiber SFP (CWDM) 1270nm
4250479325647OH-TX-12-1290SDI TX Fiber SFP (CWDM) 1290nm
4250479325654OH-TX-12-1310SDI TX Fiber SFP (CWDM) 1310nm
4250479325661OH-TX-12-1330SDI TX Fiber SFP (CWDM) 1330nm
4250479327979OH-TX-12-1350SDI TX Fiber SFP (CWDM) 1350nm
4250479327986OH-TX-12-1370SDI TX Fiber SFP (CWDM) 1370nm
4250479327993OH-TX-12-1390SDI TX Fiber SFP (CWDM) 1390nm
4250479328006OH-TX-12-1410SDI TX Fiber SFP (CWDM) 1410nm
4250479328013OH-TX-12-1430SDI TX Fiber SFP (CWDM) 1430nm
4250479328020OH-TX-12-1450SDI TX Fiber SFP (CWDM) 1450nm
4250479328037OH-TX-12-1470SDI TX Fiber SFP (CWDM) 1470nm
4250479328044OH-TX-12-1490SDI TX Fiber SFP (CWDM) 1490nm
4250479328051OH-TX-12-1510SDI TX Fiber SFP (CWDM) 1510nm
4250479328068OH-TX-12-1530SDI TX Fiber SFP (CWDM) 1530nm
4250479325685OH-TX-12-1550 SDI TX Fiber SFP (CWDM) 1550nm
4250479325692OH-TX-12-1570 SDI TX Fiber SFP (CWDM) 1570nm
4250479325708OH-TX-12-1590 SDI TX Fiber SFP (CWDM) 1590nm
4250479325715OH-TX-12-1610SDI TX Fiber SFP (CWDM) 1610nm

ATTN: State of California Consumers

WARNING: This product can potentially expose you to chemicals which are known to the State of California to cause cancer, birth defects of other reproductive harm. For more information, go to