The AJA UDC-4K is a professional-grade Up/Down/Cross (UDC) converter delivering seamless conversion between 4K, UHD, 2K, and HD formats with unrivaled precision. Featuring dual 12G-SDI and HDMI 2.0 connectivity, integrated frame synchronization and a 1x4 SDI distribution amplifier, it ensures reliability and interoperability across complex production environments. Built for high-end workflows, it supports native HDR metadata pass-through and 10/12-bit conversions for pristine signal integrity, ideal for broadcast, live production, DIT, and post.
Compact, rugged, and efficient, the UDC-4K provides uncompressed signal management with broadcast-quality scaling, sync alignment, and cross-format conversion without visible degradation. Leveraging AJA’s trusted engineering, it offers robust metal construction, low power draw, and flexible operation for on-set, studio, or rack-mounted installations.
Compact, rugged, and efficient, the UDC-4K provides uncompressed signal management with broadcast-quality scaling, sync alignment, and cross-format conversion without visible degradation. Leveraging AJA’s trusted engineering, it offers robust metal construction, low power draw, and flexible operation for on-set, studio, or rack-mounted installations.
AJA UDC-4K 12G-SDI and HDMI 4K HDR Up/Down/Cross Converter
AJA-UDC-4K
The AJA UDC-4K is a professional-grade Up/Down/Cross (UDC) converter delivering seamless conversion between 4K, UHD, 2K, and HD formats with unrivaled precision. Featuring dual 12G-SDI and HDMI 2.0 connectivity, integrated frame synchronization and a 1x4 SDI distribution amplifier, it ensures reliability and interoperability across complex production environments. Built for high-end workflows, it supports native HDR metadata pass-through and 10/12-bit conversions for pristine signal integrity, ideal for broadcast, live production, DIT, and post.
Compact, rugged, and efficient, the UDC-4K provides uncompressed signal management with broadcast-quality scaling, sync alignment, and cross-format conversion without visible degradation. Leveraging AJA’s trusted engineering, it offers robust metal construction, low power draw, and flexible operation for on-set, studio, or rack-mounted installations.
Compact, rugged, and efficient, the UDC-4K provides uncompressed signal management with broadcast-quality scaling, sync alignment, and cross-format conversion without visible degradation. Leveraging AJA’s trusted engineering, it offers robust metal construction, low power draw, and flexible operation for on-set, studio, or rack-mounted installations.
€1,762.00
Tax excluded
2.132,02 €
Con IVA
The AJA UDC‑4K is a high‑end Up/Down/Cross converter that integrates scaling, frame synchronization, HDR management and signal distribution in a single compact device. Rugged and precise, it supports 12G‑SDI and HDMI 2.0 connectivity up to 4K/UHD 60p, enabling seamless format conversion between SDI and HDMI sources for modern broadcast, production, and post environments.
Developed on AJA’s award‑winning conversion architecture, the UDC‑4K ensures pristine color fidelity with 10‑ and 12‑bit processing, reliable reference sync options, HDR workflows with metadata passthrough, and integrated distribution amplifier functionality. It is the ideal all‑in‑one unit for bringing unmatched flexibility and stability to demanding video pipelines in live production, DIT carts, studios, or OB setups.
Main Professional Features
- High‑bandwidth 12G‑SDI (BNC) and HDMI 2.0b inputs/outputs supporting resolutions up to 4Kp60.
- Up, down, and cross‑conversion between 4K, UHD, 2K, and HD signals with 4:2:2/4:4:4 chroma subsampling and 10/12‑bit precision.
- Advanced Frame Synchronizer with reference input (Blackburst or Tri‑Level Sync); lock options via Ext Ref, SDI In or HDMI In.
- Frame rate conversion support for 59.94 ↔ 50/60 fps utility adjustments for international workflows.
- Integrated 1×4 SDI Distribution Amplifier (DA) with reclocking for clean multi‑destination output.
- Full HDR/SDR processing using SMPTE ST 352 VPID and HDMI InfoFrame signaling per CTA‑861.3 specification.
- EDID emulation up to UHDp60, automatic loss‑of‑input signal management.
- Embedded audio: 16‑channel SDI and 8‑channel HDMI (24‑bit, 48 kHz); up to 100‑frame user‑adjustable audio delay.
- Advanced audio codec pass‑through for PCM, Dolby Digital (AC‑3), Dolby Digital Plus (E‑AC‑3) and Dolby Atmos (JOC).
- Local control via color LCD display and four illuminated buttons, or remotely via the free AJA Mini‑Config software (Windows/macOS) through USB‑C.
- All‑metal, low‑profile chassis — 127 × 205.5 × 41.8 mm, weight 0.9 kg; designed for both desktop and rack integration.
- Flexible power: 10–18 V DC (mini XLR) or AC 100–240 V (60 W adapter included); max. draw 25 W.
- Safe operating range: 0 – 40 °C temperature; 10 – 90 % RH non‑condensing; altitude below 3000 m.
- 5‑year warranty and global technical assistance from AJA Video Systems.
This converter merges every key processing tool required in modern video operation—scaling, frame sync, HDR management, audio alignment, and signal distribution—into a single low‑latency, high‑reliability solution. The AJA UDC‑4K is the ultimate signal‑conversion and synchronization device for broadcast facilities, mobile production units, AV installations, OB trucks and DIT workflows, where precision and dependability are paramount.
Data sheet
- Video Inputs
- HDMI
SDI - Outputs
- HDMI
SDI - Max. Video Resolution
- 625i / 525i - SD
1280x720 - HD
1920x1080 - HD
3840x2160 - UHD - Codec / Ficheros
- H.265 / HEVC
H264
1.- What is the main type of conversion performed by the AJA UDC-4K and what is the maximum resolution?
The UDC-4K is a **Cross Converter** that performs Up, Down, and Cross conversions. Its maximum **handling and output resolution is 4K/UHD (2160p) at 60fps**.
2.- What types of high-speed SDI inputs and outputs does the converter support?
It supports **12G-SDI on inputs and outputs**, allowing the transport of 4K signals over a single cable. It is also compatible with **6G-SDI, 3G-SDI, and 1.5G-SDI**, ensuring interoperability with legacy equipment.
3.- Does the UDC-4K have Frame Sync capability?
Yes. It incorporates a **Frame Sync** function which cleans the timing of asynchronous video sources, ensuring the output signal is perfectly synchronized with the reference.
4.- How does the device manage High Dynamic Range (HDR) signals?
The UDC-4K offers **full HDR support**. It can map color and brightness between different color spaces ( such as **BT.709** and **BT.2020**), which is crucial when converting or scaling signals between SDR and HDR standards.
5.- What types of aspect ratio and scaling processing does the converter offer?
It offers **high-quality scaling** and supports multiple **aspect ratio** controls. It allows adjustment of zoom, cropping, and image positioning, in addition to inserting side or top bars (pillarbox/letterbox).
6.- Can the AJA UDC-4K convert quad-link (4-cable) signals to single-link (1-cable) and vice versa?
Yes. It is compatible with **Quad-link 3G-SDI** and **Dual-link 6G-SDI** multi-cable formats. It can convert between these multi-cable formats and the single-cable **12G-SDI** format, simplifying infrastructure.
7.- What embedded audio functionality does it support?
The unit supports pass-through and manipulation of **up to 16 channels of embedded SDI audio** and **up to 8 channels of embedded HDMI audio**. It also includes audio delay to ensure lip-sync.
8.- What output HDMI connectivity features are present?
The HDMI output is **HDMI 2.0**, allowing connection to modern monitors and displays with 4K 60 fps support. It also transmits metadata, including HDR data, necessary for correct viewing.
9.- How is the AJA UDC-4K configured and controlled?
Primary configuration is done via the **USB port** using the **AJA Mini-Config** application on a computer. Additionally, basic functions and preset selection can be controlled using the front panel dip-switches and buttons.
10.- Does the unit require an external power supply or does it support PoE?
The UDC-4K is powered via an **included external DC (direct current) power supply**. It is not designed to be powered via PoE (Power over Ethernet).
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