Wednesday, 13 August 2014

Have you ever wondered why the images displayed on your screen via your decoder do not cover the entire screen, or may appear in black and white, or does not produce sounds? These occurrences could keep you uncomfortable or entirely discourage you from watching your TV. However, there are many causes of such problems as well as many solutions to them. Therefore, it becomes highly imperative to understand your TV on DStv viewing platform, its behavioral abnormalities and how best to easily correct them.

Basically, they do not mean your TV or decoder is faulty rather, certain settings need to be adjusted on either your decoder or your TV or sometimes, both of them in order to correct these problems.
 
NOTE: not all wide screen TVs are Higher Definition televisions. Many original wide screen TVs are ordinary cathode ray tube technology televisions.
My images do not cover entire Screen: THE ASPECT RATIO (4:3 or 16:9)
The aspect ratio is the size of picture displayed on your TV screen. The standard screen has an aspect ratio of 4:3 and the wide screen an aspect ratio of 16:9. It is very important to ensure that aspect ratio of the decoder and the TV correspond in order to get the best of image orientation on your TV.

If you notice black margins by the sides of the screen or the top and bottom, or images appear oblong resulting in some images cut off or missing out, then you need to adjust the aspect ratio of your decoder and TV.

Although different TV types exist and may have different ways of adjusting its image orientations, your DStv decoder has a definite pattern of adjusting its image sizes. The quickest and short-cut method is to press the white SHIFT button at the top central part of the remote.

While it keeps blinking, press the TV GUILD button once. The screen image size will automatically change while showing either of these write-ups on the top-left corner of your screen – ARC 1, ARC 2, ARC 3, ARC 4 or ARC 5. Any ARC that soothes your screen orientation becomes the recommended orientation for your type of TV.

However, if none of these ARCs was able to resolve the image size issue, then work on your TV aspect ratio before trying this process again.


Television Systems (PAL / SECAM / NTSC /MULTISYSTEM)
This is the format in which audio visual AV signals are transmitted. This includes channel width, channel spacing and encryption and may appear in single or combined television signal wave forms. These systems – PAL, SECAM, NTSC are mostly implemented worldwide.
The PAL system (Phase Alternation Line) is mostly used in the United Kingdom and many other countries including Nigeria and South Africa. It is the compatible TV system similar to the American NTSC but which supports phase reversal in the duration of its scanning lines. Although Nigeria uses the system PAL G, PAL I is the system used in the UK and South Africa.

However, whether you own a MULTI SYSTEM television or not, all installed DStv decoders must be set to PAL G for optimum audio visuals.
The SECAM system (Systeme En Couleurs A Memoire) is mostly used in France and other Francophone countries. This system allows the luminance signals to be transmitted by Amplitude Modulation (AM) while the vision carrier and color information are propagated by Frequency Modulation (FM).

The bandwidth appears same as the black and white system using similar standards. If your TV system defaults to this system, your pictures appears as black/white pictures. In this case, return to MULTISYSTEM on TV and PAL G system on decoder settings.
The NTSC (National Television Systems Committee) is a compatible color television system that originated from the United States. The PAL system as used in the UK, Nigeria and other countries is a development from the American NTSC.

Any challenge posed as a result of your TV screen image orientation must definitely originate from either of the TV settings listed above. It is only a question of knowing which setting best fits your TV and how to readjust the screen to any other settings. Understanding your TV on DStv viewing platform gives you more value for your money as well as enriched viewing pleasure.

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