System requirements

The Vienna Test System (VTS) is available as a cloud hosted solution (VTS online) and as an installable solution to be run on customer premises (VTS offline). If VTS offline is used, there is the option to set it up as a single workstation solution (installed only on one PC) or as a server/client solution in a network (see also: Product description). Depending on your selected solution & intended use-case different system requirements apply.

VTS online

As a cloud based solution based on web technologies, VTS online has no specific hardware or software requirements other than a modern web browser and a stable network connection (100 MBit/s or more are recommended for optimal functionality).

The following browser and operating system combinations are officially supported:

For tests requiring SCHUHFRIED hardware (see: Peripheral devices) as well as some older tests, an installation of the VTS Testplayer is necessary on the PC that is used for the testing (for details see: Additional requirements for specific tests). In such cases, the requirements stated for clients in a server/client solution apply. The VTS Testplayer for VTS online can be installed without administrator rights, except for the optional Response Panel drivers. The drivers are however only needed when a Response Panel is used.

VTS offline

All installable components of the VTS require a Windows based operating system running on a x86 based processor (Intel or AMD). The Windows user performing the installation needs to have administrator rights. Currently, the following versions of Windows are supported:

• Windows 11

• Windows Server 2016

• Windows Server 2019

• Windows Server 2022

• Windows Server 2025

ARM based processors are not supported. It is not possible to install on Windows versions in S mode. The N and KN versions of Windows require the installation of the Media Feature Pack.

The required hardware specifications depend on the operation variant. The VTS can operate as single workstation solution with all system components installed on one machine. For higher testing volume and many parallel test administrations, it can also be installed as a client/server solution with central data management.

Single workstation solution

VTS can be operated with an integrated SQL Server Express server, which however imposes a 10 GB overall data limit. For higher data volumes, the use of a full Microsoft SQL Server is recommended, SQL Server 2016 until SQL Server 2022 are supported.

A USB port must be available for each peripheral device and the hardware license dongle, if one is used.

Additionally, the following software components may be required:

• Microsoft Word (version 2007) or compatible is required if Word reports (see: Important terms and definitions) are to be viewed and edited.

• Microsoft XPS document needs to be be installed and activated for viewing or printing certain types of reports.

Server/client solution

Server

The required hardware specifications for the server depend on the planned number of parallel test administrations. In general, a client-server solution enables up to 200 parallel test administrations. The table below provides an approximate indication of the number of parallel test administrations possible with different hardware configurations. Please note that the actual capacity may vary depending on several factors, such as processor performance, installed software, and operating system configuration.

With appropriate infrastructure and system setup, the Vienna Test System also supports the parallel administration of more than 200 tests. We are available to provide guidance on the necessary requirements (for more information please contact us, see: Contact us).

For client/server installations the use of a full Microsoft SQL Server is recommended, SQL Server 2016 until SQL Server 2022 are supported.

A USB port must be available for each peripheral device and the hardware license dongle, if one is used.

Additionally, the following software components may be required:

• Microsoft Word (version 2007) or compatible is required if Word reports (see: Important terms and definitions) are to be viewed and edited.

• Microsoft XPS document needs to be be installed and activated for viewing or printing certain types of reports.

Clients

Network requirements

A fast and stable connection between the clients and the server is required. A bandwidth of at least 100 Mb/s is recommended for the clients and 1000 Mb/s is recommended for the server. At lower bandwidths a sufficient performance of the VTS cannot be guaranteed. To minimize the effect of interference, a cable connection is recommended over a wireless connection. It is also important to ensure that the cabling of the network and other network components is sound.

The VTS uses HTTPS to connect between client and server. The system installs a self-signed SSL certificate by default. Those self-signed certificate are supporting typical DNS name ending .local, but should not be used with official domains. However, using a fully-fledged SSL certificate (RSA 2048 bit) is recommended when utilizing the system via the internet. For details see: Encrypted communication in VTS (https).

VTS uses multiple ports for communication that must be configured correspondingly/opened in the firewall. For details see: Server/client installation and Installation of the VTS clients.

General

• Some tests require specific hardware from SCHUHFRIED or other additional requirements, see Additional requirements for specific tests for details.

• We strongly recommend keeping the Vienna Test System up to date by always using the latest available version. This ensures access to the most recent features, performance improvements, and important bug fixes. For VTS Versions older than 36 months we do not offer technical support free of charge, for details see the section Update & support.

• We recommend monitors with a screen diagonal of 14“-27“ and a resolution of at least 1280 x 1024. The resolution should not exceed 1920 x 1200. For CRT monitors the refresh rate must be at least 75 Hz.

• Before you install the VTS please make sure to read through our guide: Installation and configuration

Safety features

If the Vienna Test System is used in healthcare services, the use of the following devices may be required:

• Medical grade isolation transformer in accordance with EN 60601

• Galvanic medical network insulation in accordance with EN 60601 (if the computer is connected to a data network)

Please consult your in-house health and safety officer.

The SCHUHFRIED input and output devices are developed and produced according to the technical safety requirements of EU Directive 93/42/EC, even though the Vienna Test System is not declared as a medical device. The CE mark confirms that our products comply with the technical safety regulations and the electro-magnetic compatibility norm (EN 60601 family of norms), bio-compatibility guidelines (EN 30993), product-specific requirements, and underlying quality management standards. For details visit the section: Peripheral devices.

Please consult us before purchasing new equipment. We will be happy to assist you in selecting the most suitable items for your needs.