User guide
DM-14B & DM-14C User’s Guide
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SPECIAL TV BARS SCAN FUNCTION
The BARS SCAN function activates the graphics representation of the bar spectrum. Each bar shown represents the value of the level/average power of TV programes
(analogue or digital) stored in the chosen memory plan.
This spectrum representation is useful in the TV band to easily equalise a channelised head-end output. The analog terrestrial channels are represented by a thin bar whose
height is proportional to the level of the video carrier, whereas the digital terrestrial channels are represented by a wider bar whose height is proportional to the average power of
the digital package.
How to activate the TV BARS SCAN function:
DIRECT: Select a memory plan, previously stored, then press the key for 2 seconds. Move from one bar to another using PROG. NAME.
APPLICATION NOTES:
o In the BARS SCAN function it is possible to activate the TILT measurement, ie the difference in dB between the two carriers selected and shown by the marker.
To activate the function, bring the cursor to the word TILT, press and select ON with the encoder
Press the key to adjust the position of the two pilot markers for the TILT measurement. Position the markers of the carriers you want to measure by changing the programme
(PROG. NAME)
o It is also possible to visualise for each analog bar (TV) the bar level associated with an audio carrier.
To activate this function, press the key with select AUDIO LEV. Press and select ON.
Figure 1