TV EXPLORER HD+ manual - Promax

USER’S MANUAL. TV EXPLORER HD +Figure 27.- Carrier-to-noise ratio measurement (C/N).As well as the video carrier / noise level ratio (C/N) (41.0 dB in previous figure), thefrequency or channel (depending on the tuning mode selected) and the level of the videocarrier and video/audio ratio are also shown. When representing the spectrum by meansof pressing [13] key, the NOISE cursor is automatically positioned to a side of thecarrier tuned. That is, the cursor will indicate the point where the value of the noise islower, whenever the C/N(AUTO) option is selected from the PREFERENCES [22]menu. If the C/N(MANUAL) option has been activated the frequency where noise levelwill be measured will correspond to the position of the vertical discontinuous greencolouredcursor that appears in the spectrum graph [13].EnglishIn order to modify this frequency, press the measurement configuration[17] key, to accede to the CONFIGURATION menu. By turning the rotary selector[1], locate the NOISE cursor on the position of the marker using NOISE FREQ. TOMARKER option (see section “5.16.1 Markers”) or directly enter the value of the newnoise frequency by means of NOISE FREQ option.Figure 28.- NOISE cursor. C/N (MANUAL).01/2011 Page 53