These test tapes are used for adjusting tape transport parameters, levels, etc., and have long been used in design and development, on production lines and elsewhere for ensuring VCR compatibility.

The global standard VHS format was developed by JVC. Test tapes are used to ensure compatibility.
With the arrival of the digital age, the new digital formats are supported by the same proven technology and renowned reliability. JVC has a full line-up of products from VHS to the latest D-VHS.