Promax TV EXPLORER HD ISDB-T Manual page 149

USER'S MANUAL. TV EXPLORER
The calibration process must be carried out over the point of the installation which
is taken as reference, i.e. usually the headend. During this process is determined the
number of pilot frequencies to check, from one to three, in addition to the reference level
for pilots. In order to determine the number of pilots, the equipment takes the higher
found level and verifies that the other pilots have a non lower level to the reference one
plus the defined threshold level. If the pilot agrees this condition it will show on screen.
The user can also define the pilot frequencies:
Press the key
measure. The PILOTS function allows you to set pilot signals manually. To do this, using
the rotary selector
menu where you can set the frequency of each of the 3 pilot signals. If you want to return
to the automatic generation of pilot signals, change PILOTS function back to AUTO.
2.- MEASUREMENT OF THREE PILOTS THROUGHOUT THE NETWORK
Once TV EXPLORER
measurements in the different distribution outlets using the TV EXPLORER
ISDB-T/T . On the screen will appear the attenuation values for the three pilot
B
frequencies measured in the outlet plate (see the following figure).
11/2010
HD ISDB-T/T
B
Figure 16.- SAT IF Test Satellite band.
[17] to show on screen the CONFIGURATION menu of the
[1] select that function and change it to MANUAL. You will see a
HD ISDB-T/T
B
has been calibrated, start to make level
HD
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