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Aerials which have achieved CAI benchmark status | Basis of the CAI-DTG aerial benchmarking scheme | Benefits of aerial benchmarking | Download the guidelines document (PDF) |
CAI Benchmarking Scheme for Aerials
Basis of the CAI/DTG Aerial Benchmarking Scheme
The basis of the scheme is to lay down minimum standards for the technical performance of domestic TV aerials based on the specific requirements for satisfactory DTT reception. It is not intended to address general quality issues, such as standard of construction, durability etc., which can largely be assessed by visual inspection and from practical experience. This benchmarking scheme covers aerials only. It does not cover the complete aerial installation, or installation practice.
Conformance to the minimum standards is determined by independent measurements against a technical performance specification. This has been compiled by an industry wide committee who will monitor the implementation of the scheme and agree any necessary changes to the detailed procedures, test methods, and specifications.
The scheme allows the measurements to be carried out by any test house that is able to demonstrate that it meets the required standards of measurement accuracy. The use of the 'mark' will be authorised for specific products by the CAI, once the 'pass' certificate and supporting documentation has been issued by the test house. Testing of random samples sold to installers or retailers will ensure ongoing conformance.
The Aerial Benchmarking Scheme is a purely voluntary arrangement within the industry and the DTG/CAI have no intention of seeking any form of mandatory status. It is however expected to be widely adopted, following the success of the CAI Cable Benchmarking Scheme. Reference may be made to specific types of CAI/DTG benchmarked aerials in manufacturers literature, purchasers' requirement specifications or supply contracts.
Benchmarked aerials should always be used in conjunction with good installation practice as laid down by the CAI Code of Practice and the recommendations in DTG R Book 2 [available as a download PDF from the DTG Publications page].
** Full details of the Benchmarking criteria are available in the document "CAI-DTG Guidelines for the use of Benchmarked Aerials".