In the run-up to the test, we defined practical requirements and the following test criteria:
- Image quality
In order to evaluate these criteria, we have defined several tests for wireless presentation systems. First, the scope of delivery and functionality are checked. The devices are connected to beamers, laptops, and televisions, whereby the user-friendliness and operation are evaluated. In order to check the range, a laptop is connected to a television set via the devices and removed from the TV with the laptop. The exact distance is measured from when the picture is no longer fluid or when the connection breaks off.
The picture and sound quality are assessed by means of a simulated presentation and the playback of a film with 60 FPS. Possible delays between transmitter and receiver are also checked. For this purpose, a laptop is again connected to a TV via the test devices. When playing a Full HD film or working with it, the delay in movement is carefully monitored. Finally, compatibility with other devices and safety are tested.
In order to rule out errors and to ensure the strain of everyday use, each test takes place in several rounds.
The test criteria are given percentages depending on their importance. The final score is then objectively calculated from the test criteria using an algorithm.
Our product selection is based on an observation of the current market. In addition to popular branded products, we also include insider tips in our selection. Criteria such as price and range of functions are an important factor for us. The test field is also determined by analysis and evaluation of customer reviews and external tests (e.g. Stiftung Warentest).
The devices are purchased anonymously or lent to us by the manufacturer. Dealers and manufacturers have no influence on the tests and our evaluation.
As soon as new relevant products come onto the market, our test field is extended by these. The new products go through the same test as the already tested devices.