AVMATRIX SD1121-12G SDI Distribution Amplifier 1×2
12G-SDI reclocking amplifier for broadcast
article number: 12521 | manufacturer number: SD1121-12G | EAN/UPC: 6971118001514
The SD1121-12G is a miniaturized 1×2 12G-SDI reclocking distribution amplifier from AVMATRIX designed specifically for professional broadcast and video production environments. The compact device enables the automatic detection of SD/HD/3G/6G/12G-SDI input signals and reliably distributes them to two outputs. Through integrated cable equalization and re-clocking technologies, the SD1121-12G supports extended cable ranges of up to 400m for SD, 200m for HD, 120m for 3G and 60m for 12G-SDI signals.
The Distribution Amplifier offers full compatibility with all common SDI formats from standard definition to 4K UHD. All SDI standards from 625i/525i to HD formats such as 1920×1080p/i and 1280×720p up to 2K Cinema formats 2048×1080p are supported. For modern 4K workflows, the device processes both 3840x2160p and 4096x2160p signals at various frame rates from 23.98 to 60 fps. Color support includes RGB 4:4:4, YUV 4:2:2 and 4:4:4 as well as XYZ 4:4:4 in 10-bit and 12-bit precision.
The SD1121-12G features one 75Ω BNC SDI input and two 75Ω BNC SDI outputs, which are fully compatible with ASI signals. This makes the device particularly valuable for broadcast applications where both video and data signals must be distributed. Power is supplied via a micro-USB port with a voltage range of 5-5.5V with a maximum consumption of 1.5W. In addition, a USB port is available for firmware updates, which ensures that the system stays up to date over the long term.
With dimensions of only 71×41×23mm and a weight of 168g, the SD1121-12G offers an exceptionally compact solution for mobile production environments. The robust construction is designed for professional continuous operation and works reliably in a temperature range of -20°C to 60°C with a relative humidity of up to 90% without condensation. The included mounting brackets enable flexible installation in racks or other production environments.
The Distribution Amplifier meets all relevant SMPTE standards including SMPTE 259M, 292M, 296M, 424M, 425M as well as the newer SMPTE ST-2081 and ST-2082 specifications for 12G-SDI. Additionally, ITU-R BT.656, ITU-R BT.601 and DVB-ASI standards are supported. The device is supplied with a 5V USB power supply and mounting brackets and offers a 3-year manufacturer's guarantee for long-term investment security in professional production environments.
The power supply is included in the scope of delivery.
Real product can look different to picture
techn. Specs▲
| Input | SD/HD/3G/6G/12G-SDI/DVB-ASI × 1 |
|---|---|
| Output | SD/HD/3G/6G/12G-SDI/DVB-ASI × 2 |
| SDI video rate | SD/HD/3G/6G/12G-SDI |
| SDI Compliance | SMPTE ST-2081, SMPTE ST-2082, |
| SMPTE 259M, SMPTE 292M, | |
| SMPTE 296M, SMPTE 424M-B, | |
| ITU-R BT.656, ITU-R BT.601, | |
| SMPTE 274M, SMPTE 425M | |
| ASI Compliance | DV B-ASI |
| SDI color space | YUV, RGB |
| SDI equalization and reclocking | Yes, SDI input and output support up to 60m/100m for 12G/3G-SDI |
| Power port | USB Type-C |
| Voltage Range | USB 5V |
| Power consumption | 1W |
| Operating temperature | -20℃~60℃ |
| Storage temperature[[9 8]] | -30℃~70℃ |
| Relative Humidity | 0%~90% not condensing |
| Size | 105.5×41×23mm |
| Weight | 156g |
| What is included | 5V power supply×1 |
| Warranty | 3 years limited Guarantee |

Questions & Answers▲
Which SDI formats are supported by the SD1121-12G?
The SD1121-12G automatically supports all common SDI formats: SD (625i/525i), HD (1280×720p, 1920×1080p/i), 3G-SDI, 6G-SDI and 12G-SDI up to 4K UHD with resolutions of 3840×2160p and 4096×2160p in frame rates from 23.98 to 60 fps.
How many outputs does it have SD1121-12G?
The SD1121-12G is a 1×2 distribution amplifier and has an SDI input and two SDI outputs, which distribute the input signal simultaneously and without loss of quality.
What is the maximum Cable length is possible at the input?
Thanks to integrated cable equalization technology, the SD1121-12G supports cable lengths of up to 400m for SD signals, up to 200m for HD, up to 120m for 3G-SDI and up to 60m for 12G-SDI at the input signals.
What does the re-clocking function do?
The re-clocking technology regenerates the clock signal of the incoming SDI signal. This corrects jitter and signal degradation caused by long cable runs before the signal is passed on to the outputs.
How is the SD1121-12G powered?
The power is supplied via a micro-USB port with an operating voltage from 5 to 5.5V. The maximum power consumption is 1.5W, which makes the device suitable for operation via standard USB power supplies or power banks.
Are the BNC connections compatible with ASI signals?
Yes, they are 75Ω BNC connectors of the SD1121-12G are fully compatible with ASI signals. The device is therefore not only suitable for the distribution of video signals, but also for broadcast data streams.
Which color formats and color depths are supported?
The SD1121-12G supports the color formats RGB 4:4:4, YUV 4:2:2 and YUV 4:4:4 as well as XYZ 4:4:4. The color depth is either 10 bit or 12 bit, which meets professional requirements in color processing.
Does the input signal have to be set manually?
No, the SD1121-12G recognizes the input signal SDI input signal automatically. Manual selection of the format is not necessary, which simplifies use during ongoing operation.
How compact and light is the device?
The SD1121-12G has dimensions of 71×41×23mm and a weight of only 168g exceptionally compact and light. It is therefore particularly suitable for mobile production environments where space and weight play an important role.
Can the device's firmware be updated?
Yes, the SD1121-12G has a USB port that is intended exclusively for firmware updates. This means that the device can be kept up to date in the long term and added new functions if necessary.
For which areas of application is the SD1121-12G suitable?
[The device was developed specifically for professional broadcast and video production environments. Typical areas of application are OB vans, studio productions, event productions and all situations in which an SDI signal must be reliably distributed between two destinations.
The SD1121-12G also supports 2K Cinema formats?
Yes, in addition to standard and HD formats, the SD1121-12G also processes 2K cinema signals with a resolution of 2048×1080p, making it suitable for production environments with cinema cameras and corresponding workflows power.
documents, files, links▲
product safety (GPSR)▲
sd1121-12g user manual-211119.pdf