– 7871 - 7872 - 7875 - 7876 –
p.
53
11.3 Level measurements
You can measure levels at a specific frequency with a detection matching the standard.
In terrestrial band, for an user socket, the level should be:
-
between 50 and 66 dBµV under FM
-
between 35 and 70 dBµV under DVB-T/H, DVB-T2 and DAB/DAB+
-
between 57 and 74 dBµV in any other case.
In satellite band, for an user socket, the level should be:
-
between 47 and 77 dBµV.
Example in terrestrial mode:
The appliance makes different measurements according to the current
standard
.
The other possible measurements are:
Average
measurement
Peak
measurement
Power
measurement.
11.4 Satellite band
The following table sums up the measurement types and the frequencies of the audio carrier waves for each
standard:
Standard
Video carrier
Measure
PAL
FM
Peak
SECAM
FM
Peak
NTSC
FM
Peak
DVB-S
Digital
Power
DSS
Digital
Power
DVB-S2
Digital
Power
Signal level
Signal/noise ratio of
the signal
Reduced spectrum of the
Span signal, ca. 10MHz
