Gsertel 901622, Руководство пользователя

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8.4.6.1.- Main Window
If Emission mask is OFF , you can see the FM
deviation according to the annex II of the norm:
List of FM measurements:
- Level
- C/N
- Peak deviation: maximum deviation value
- BLER: block error rate (rate of RDS errored
blocks).
More FM measurements (Option 901633)
- MPX Power: modulation power relative
to a sinusoidal tone which causes a peak
deviation of 19 kHz.
- AM Depth: variation of the instantaneous
RF amplitude with time
- Ch. Response / AM Depth: relation
between the center of channel frequency
response and AM Depth
- Gradient: maximum slope of the channel
frequency response
FM deviation advanced measurements (Option
901633)
In order to get FM deviation advanced
measurements, it is necessary to configure an
observation time tapping on
Time recommended by the ITU-R SM.1268-5
norm is 15 minutes, but time could be configured
List of measurements
The grey shadow indicates the
maximum deviation value to
make sure there are no problems
in neighbouring channels
Chart represents the
distribution of the
frequency deviation
(1 minute to 2 hours).
List of FM deviation advanced measurements:
- Max. MPX Pow: maximum value of MPX
power
- Deviation (10-6): maximum deviation
value discounting the 0.0001% of samples
with biggest deviation.
- Deviation (Hold): maximum deviation
value
- Samples (+75kHz): number of samples
with deviation higher than 75kHz
- Samples (+77kHz): number of samples
with deviation higher than 77kHz
- %Samples (+75kHz): percentage of
samples with deviation higher than 75kHz
- %Samples (+77kHz): percentage of
samples with deviation higher than 77kHz.
If
Emission mask
is
ON
, you can see the FM deviation
according to the annex I of the norm:
The blue line corresponds to the
limit established by the norm
The orange graph
is the maximum
hold
The light blue graph is the FM deviation
measure according to annex I
List of measurements: power, C/N, peak
deviation (maximum deviation value), and BLER
(block error rate -rate of RDS errored blocks-)