{"id":236,"date":"2015-07-13T15:06:34","date_gmt":"2015-07-13T15:06:34","guid":{"rendered":"http:\/\/headendinfo.com\/?p=236"},"modified":"2020-04-20T07:08:48","modified_gmt":"2020-04-20T07:08:48","slug":"snr-cnr-headend","status":"publish","type":"post","link":"https:\/\/headendinfo.com\/snr-cnr-headend\/","title":{"rendered":"How To Maintain SNR CNR For Digital Headend System ?"},"content":{"rendered":"\n
\"snr<\/a><\/figure><\/div>\n\n\n\n

Introduction  Of  SNR CNR<\/h2>\n\n\n\n

SNR<\/strong> and CNR<\/strong> are the two terms which often used in the analog and digital communication. This ratio is measured in dB. SNR is basically signal to noise ratio or strength of the signal to the noise level in the signal. CNR stands for Carrier To Noise Ratio as its name indicates itself that this is the noise ratio which at the time of modulation due to high frequency carrier wave.<\/p>\n\n\n\n

For a communication engineer it is not required get the some noise in the signal because it makes the pitcher quality down. We need to adjust it in proper way so that subscriber would not be affected from it. Even there are some noise also available in the signal but that is not visible with eyes.<\/p>\n\n\n\n

\"headend<\/a><\/figure><\/div>\n\n\n\n

What  Is  SNR CNR<\/h2>\n\n\n\n

As we have discussed above SNR is the signal strength to noise level. For example  the incoming signal Vs micro volts and Vn micro volts noise then SNR or signal to noise ration can be expressed as<\/p>\n\n\n\n

                            S\/N = 20 Log10 (Vs\/Vn)<\/p>

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