Kathrein MSK 130 Instructions For Use Manual - 20.2

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20.2 

TV and CATV Special Functions

For terrestrial and cable TV,  MSK 130 provides several special tools to verify the correct-

ness of the aerial and cable installation. One of these tools is the Buzzer and Noise Margin 

described in the previous chapter. Other tools are described in the following sections.

20.2.1 

Attenuation Test (TV)

When a signal distribution system is installed, it is often necessary to verify that all ends 

receive the same signal strength and that there are no leaks or other broadcasting issues. 

As a rule, at one end the technician switches on a small carrier frequency generator which 

feeds in three CW tones.

At the other end of the distribution system, the attenuation test activates a frequency 

sweep to detect these carriers and record their frequencies and signal levels as reference  

(

CALIBRATION

 = calibration mode). Once the calibration has finished, it is possible to 

store those carriers in a special plan (MANUxx) that can be later recalled in the measure-

ment interface to perform comparative measurements at other outputs of the distribution 

system.