Tilt Function - Promax 27 Manuel

USER'S MANUAL. PROMAX-27
BACK [F5]:
4.2.3.6

TILT function

To access the TILT function:
1.- Press key
2.- Press softkey MODEM [F1].
3.- Press softkey SPECTRUM / SCAN [F3].
4.- Press softkey SCAN [F3] (if coming from SPECTRUM screen).
5.- Press softkey TILT [F4].
The TILT test is a utility to equalize the line. TILT is the difference in amplitudes
between the minimum and maximum frequency that the system can compensate.
Typically, CATV networks transmit two pilot signals at the beginning and at the end of
the band. These two pilots and two more are the ones that can be tuned simultaneously
on the screen. By this way you can evaluate the losses slope and therefore readjust
equalizers of the amplifiers in order to compensate these losses and ensure a flat
response along the band.
By activating the TILT function, the screen shows the inclination of the whole
band. The data on the screen are:
TILT:
dB / MHz:
* P1 / * P4:
P2 / P3:
09/2010
It returns to the previous screen MODEM.
[13].
Figure 17.- TILT Screen
Inclination in dB.
Inclination rate in dB per MHz.
End pilot signal. Pilot signal frequency, power and trend.
Intermediate pilot signal. Pilot signal frequency, power and
trend.
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