Are you having trouble with your Atsc digital receiver performance? Do you experience difficulties in achieving reliable reception? Do you find it hard to reject interference that hinders your viewing experience? Worry no more! The A/74 Receiver Performance Guidelines from the Advanced Television Systems Committee (ATSC) is here to help you out.
This Recommended Practice is specifically designed to address the front-end portion of a receiver for digital terrestrial television broadcasts. It aims to provide guidelines that assure reliable reception to be achieved. These guidelines are based on the FCC planning factors that were used to analyze coverage and interference for the initial phase of digital TV deployment.
The A/74 Receiver Performance Guidelines provide a comprehensive guideline for interference rejection, which is one of the primary issues that affect the performance of digital terrestrial television receivers. Interference can come in different forms, such as signal reflections, co-channel interference, and adjacent channel interference. These factors can negatively affect the quality of your viewing experience, leading to lost signals, frozen images, or distorted audio.
To avoid these problems, the A/74 Receiver Performance Guidelines provide a thorough list of recommendations that can help improve the overall performance of your digital terrestrial television receiver. These recommendations include:
1. Sensitivity: The receiver's sensitivity measures how well it can detect low-level signals. A higher sensitivity means better performance in areas with weak signal strength. The guidelines recommend a minimum sensitivity of -85dBm for digital terrestrial television receivers.
2. Selectivity: Selectivity measures a receiver's ability to reject adjacent channel interference. Interference from other channels can often disrupt the reception of your favorite channels. The guidelines recommend a minimum selectivity of 30dB for digital terrestrial television receivers.
3. Intermodulation distortion: Intermodulation distortion occurs when two or more signals combine, producing unwanted noise or distortion. The guidelines recommend a maximum intermodulation distortion of -60 dBc for digital terrestrial television receivers.
4. Image and spurious response rejection: Image and spurious response rejection measures a receiver's ability to reject unwanted signals. Interference may come from spurious emissions from sources such as mobile phones, Wi-Fi access points, or other electronic devices. The guidelines recommend a minimum image and spurious response rejection of 60 dB for digital terrestrial television receivers.
5. Noise figure: Noise figure measures how much added noise the receiver produces. The guidelines recommend a maximum noise figure of 8 dB for digital terrestrial television receivers.
6. IF rejection: The IF rejection measures the degree to which the receiver can reject unwanted signals that may come from the intermediate frequency (IF). The guidelines recommend a minimum IF rejection of 60 dB for digital terrestrial television receivers.
With these recommendations, the A/74 Receiver Performance Guidelines can help improve the overall performance of your digital terrestrial television receiver, allowing you to achieve reliable reception and reject interference. This will result in a better viewing experience for you and your family.
In conclusion, the A/74 Receiver Performance Guidelines is an essential tool for anyone who wants to maximize their digital terrestrial television viewing experience. By following these recommendations, you can ensure that your receiver will perform at its best, providing you with reliable reception while rejecting any interference that may occur.
So, whether you're an avid television viewer, a casual watcher, or simply someone who wants to get the best viewing experience possible, make sure to follow the guidelines provided in the A/74 Receiver Performance Guidelines. You won't regret it!