Televes Serie H-60 - Manual (Page 27)

27
EN
3.2.- TUNING MODES
The H60 has two tuning modes: by channel, or by frequency. To select one or the other use
keys (channel tuning) and (frequency tuning).
If you are using channel tuning, the analog measures that are carried out will be made on the
video carrier of that channel.
For example, if the plan selected is CCIR, and the channel tuned is S01, the video carrier
frequency is 105.25 MHz. Then, when a level measurement is taken, the frequency level of
the video carrier will be measured. For example, on measuring the C/N, the equipment will
automatically seek the video carrier frequency and carry out the measuring action on that
frequency. The same thing happens with the measurement of the V/A ratio.
On the contrary, if the frequency tuning mode is selected, the measurements will be taken on
the frequency indicated.
If we take as an example the measurement of C/N, the carrier level will be measured on the
user-selected frequency, that may not coincide with the frequency of the video carrier of any
channel.
When there is a measurement window open, and the frequency tuning mode has been selected,
if we press the key , we will go to the channel tuning mode, and see the channel tuned on
the window. The frequency shown is that of the video carrier of the channel that was tuned by
analog mode, and the central frequency of the channel in the digital mode. By turning ,
we will automatically tune in to the next channel, and see the new measurements in the window.
If we again press the key , the channel information will disappear, and then we will be able
to introduce the channel number manually, using the numerical keyboard so to confirm the
channel we press . In the event that various channels share the same channel number, a list
showing the coinciding channels will unfold, in which the desired channel may be selected
using the and pressing .
When a measurement window is open and the channel tuning mode is selected, if we press the
following key we will go to the frequency tuning mode, and the frequency information text
will show up clearly on a dark background, thus enabling us to vary the frequency by using the
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