| 摘要 |
The invention to which this application relates is to provide a means for use in electrical and electronic apparatus, such as apparatus for the receipt of television signals in either analogue or digital form, and to allow components within the apparatus which are required to operate at set frequencies or within set frequency range, to be set and/or adjusted prior to, or during, use of the apparatus with reference to an RFTV modulator. This ensures that the components are set and maintained within predetermined parameters and also overcomes the need for additional time in the manual setting and/or adjusting of the devices and/or the provision of additional components to prevent frequency drift as is the case in conventional apparatus. |
