My noise bandwidth has been changed by another user on the Carrier-to-Noise measurement in the 2714 or 2715 CATV Spectrum Analyzer.

My noise bandwidth has been changed by another user on the Carrier-to-Noise measurement in the 2714 or 2715 CATV Spectrum Analyzer.

The default noise bandwidth that the Cable TV industry uses for the C/N measurement is 4.0 MHz. This is set in the CATV Measurements menu, then select Carrier-to-Noise, then select Setup Carrier-to-Noise. Now select Noise Norm'd BW and set to 4.0 MHz.