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DTA-2172 - Dual 3G-SDI/ASI Ports for PCIe  


Dual 3G-SDI/ASI Ports for PCIe

Two general-purpose 3G-SDI bi-directional ports, both ASI capable, with genlock. This card enables you to create broadcast-grade applications for encoding, playout, insertion/extraction, etc. with an easy-to-use programming interface.


Key Characteristics

Ports 2x 3G-SDI/ASI in/out
1x genlock in
Features 10-bit full frame access
Low latency
A/V/anc extraction/insertion
Scaling: 1/4, 1/16
API DekTec Matrix API® 2.0

(Matrix API is part of DTAPI)


Connectors 3x 75-Ω micro-BNC
Cable length ASI/SD-SDI - 350m
HD-SDI - 200m
3G-SDI - 150m
PCI Express Low-profile PCIe gen2 x4


Video formats 525i, 625i, 720p, 1080i
1080p, 1080psf

All common formats and frame rates including 1080p50 and 1080p60

Link SD-SDI - SMPTE 259M

3G: Level A and B are supported

DVB-ASI EN50083-9 (coax)
0 to 214 Mbps

PC Support

OS Windows 10, 11
Windows Server 16, 19, 22
Linux ≥2.6.18, 3.x, 4.x, 5.x
Processor Core i7

Or equivalent AMD CPU


StreamXpress Playout TS- and SDI files
SpRcApi StreamXpress remote-control API for automated playout
StreamXpert Our industry-standard transport-stream analyzer
SdEye SDI analyzer for detailed inspection of audio, video and ancillary data
VF-REC SDI/TS recorder with looping, scheduling and more
DekTec SDKs Create your own application


The DTA-2172 is controlled by firmware that is located in on-board flash memory. You can upgrade or downgrade the firmware in the field.

Please refer to the DTA-2172 firmware page to view available firmware versions, and how to upgrade or downgrade to a specific firmware version.


The DTA-2172 is part of the DekTec-for-Developers range. Attractive OEM arrangements are available, please contact DekTec to discuss your options.

DTA-2172619Stock: 25+
Dual 3G-SDI/ASI for PCIe without application software. Free Linux/Windows SDK. For creating software-defined broadcast products with SDI and/or ASI I/O.

The DTA-2172 comes with a full-height PCIe bracket mounted and a low-profile bracket in the box (except for OEM sales). Use DTA-2172-LP to order a DTA-2172 with low-profile bracket mounted.

DTA-2172-SLP859Stock: 25+
Dual 3G-SDI/ASI ports for PCIe with StreamXpert Lite and StreamXpress player software.
DTA-2172-SXP1.985Stock: 25+
Dual 3G-SDI/ASI ports for PCIe with StreamXpert analyzer and StreamXpress player software.
DTA-2172-SY-SXP2.807Stock: 25+
Dual 3G-SDI/ASI ports for PCIe with SdEye and StreamXpert analyzer and StreamXpress player software.

Prices exclude applicable sales tax, shipping charges and customs duties. Quantity discounts may be available, please request a quotation.


BNC to micro-BNC conversion cable (25cm).
Micro-BNC circular nut driver. Tool for loosening and tightening micro-BNC nuts for swapping PCIe brackets.

If the total order amount is less than EUR 200, shipping/handling costs of EUR 25 will be charged.


  • Two general-purpose ASI/SDI ports, each configurable from your application as input or output, and as ASI or SDI (SD/HD/3G-lvl-A/B).
  • Synchronization of SDI outputs via analogue genlock input, accepting bi- and tri-level sync.
  • DekTec Matrix API® 2.0 for easy programmatic access to video, audio and ANC data. All SDI symbols in a frame can be read or written.


  • Input/output of uncompressed or compressed streams for your software-defined solution:
    • Video encoding or decoding;
    • Video playout or recording;
    • Key- and fill generators;
    • Audio insertion or extraction;
    • Low-latency subtitle insertion.
  • Stream station for generation, monitoring and analysis of ASI/SDI streams up to 3G-SDI.

Block Diagram

The DTA-2172 features two transmit/receive channels, each consisting of a cable equalizer, ASI/SDI receiver, ASI/SDI transmitter, Matrix logic, high-performance DMA controller and PCIe interface.

Block diagram of the DTA-2172

DekTec Matrix API® 2.0

The Matrix-API framework decodes incoming SDI data into pixels (in a programmable format), audio samples and ANC data structures. When a new frame has been received, the framework calls a user-supplied "frame-processor callback" for processing of the data. The user callback can create output video, audio and ANC data. which is encoded by the framework into SDI frames.

Synchronization of multiple input streams is straightforward: The video/audio/anc data of all SDI frames supplied to the callback function have the same arrival time by definition. Past frames can be accessed by an integer frame index. The framework ensures that if frames from different input ports have the same frame index, they have entered the system at the same time instance.

Related Products

DekTec Matrix API® 2.0 supports the DTA-2172 and all products listed below. Applications designed for one of these cards will run virtually unaltered on any of the other cards.

DTA-2172 Bird's Eye View

DTA-2172 Dual 3G-SDI/ASI Ports for PCIe