{"id":2968,"date":"2018-03-18T08:38:10","date_gmt":"2018-03-18T08:38:10","guid":{"rendered":"http:\/\/headendinfo.com\/?p=2968"},"modified":"2020-03-14T02:49:54","modified_gmt":"2020-03-14T02:49:54","slug":"mer-testing-modulation-error-ratio","status":"publish","type":"post","link":"https:\/\/headendinfo.com\/mer-testing-modulation-error-ratio\/","title":{"rendered":"MER Modulation Error Ratio Testing For Digital Headend Equipments"},"content":{"rendered":"

\"mer<\/p>\n

Introduction<\/h2>\n

MER<\/strong> is known as Modulation Error Ratio<\/strong>. In simple words MER is errors detected in modulation between what we transmitted and what we received. MER is measured in dB.<\/p>\n

We face a problem generally in cable tv industry that all the channels of all Transport Streams<\/a><\/span> are working fine in headend but in the field we are getting freezing in some channels while signal level of all the Transport Streams is ok. To maintain only the signal level in field is nothing while there are some other parameters responsible for proper delivery of all channels like BER<\/a><\/span> and MER etc.<\/p>\n

Sometimes we faces this kind of problem in Digital Headend also and we gets freezing. Although there can be several factors responsible but in this article we will cover MER degradation problem.<\/p>

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