To whom is it intended? Go to top

Manufacturers and distributors of Set-Top Boxes (STB) face with the issue of returned devices due to numerous problems occurring during exploitation. These malfunctions can be caused by various reasons, either in software (bugs in device’s functionality) or hardware (damages caused by improper use or malfunction of the hardware).

STB Diagnostic Station is intended for rapid testing and verification of devices intended for repair and returned from exploitation, from the standpoint of functionality. Set of developed tests is optimized and fast to execute, covering the basic functionalities, and at the same time allowing simultaneous testing of multiple devices.

Thus STB Diagnostic Station finds its area of application at operators who deliver set-top-boxes, manufacturers, and service companies engaged in the repair.

Repair icon

STB Service Centers


How it improves your productivity? Go to top


Reduces human interference


Independent of different manufacturers and types of STB

In-depth testing


How does it work? Go to top

Testing of STB using Diagnostic Station assumes that audio and video interfaces of the tested device are electrically correct. The system records output audio and video content, and based on their comparison with referent content, by using various algorithms, decides whether the tested condition is correct or not.

The system is set up in the way that the outputs from the STB to be tested are fed to the grabber device’s (RT-AV100) inputs. RC emulators are positioned in front of each device under test, enabling navigation through their menus. When the application is started on the PC workstation, it automatically loads the configuration, and controls the system and all connected devices.


What is tested? Go to top

A pre-defined set of tests* running on STB Diagnostic Station cover following aspects:

  • Reading the voltage levels on LNB and analog audio and video interfaces (CVBS and SCART)
  • Decoding of compressed channels (MPEG4, MPEG2 ..) on the internal network (internal cable network)
  • Testing of audio and video content for analog (CVBS, SCART, RGB) and digital (HDMI, S/PDIF Coax and Optical) interfaces with static or live video stream
  • Testing in “loop through” conditions
  • Testing of USB functionality

*The set of tests can be expanded in accordance with requirements of testing.


How to build the environment? Go to top



Most commonly detected errors Go to top

The most commonly reported errors are:

  • Incorrect voltage values at SCART pin 8 and 16 – voltages which are related to aspect ratio selection and to RGB / CVBS selection, respectively
  • Bad decoding of audio and video signals
  • External media storage / shared content playback error


What am I buying? Go to top

STB Diagnostic Station consists of:

  • HW* – 19” rack with:
  • 12 RT-AV100 devices
  • 12 RC emulators
  • 4-button keyboard
  • LAN switch
  • SW
  • INTENT+ application for management of requirements, tests, test plans, and reporting
  • RT-Executor Lite application for carrying out tests
  • Test suite**

* The described system accommodates 12 STB units. System size is scalable, and fully configurable to meet customer’s needs. The system comes fully assembled (completed cabling)
** Includes adjustments of the tests to client’s STB



Diagnostic Rack in Action Go to top