Manual de instrucciones - Promax

USER’S MANUAL. PRODIG-5
FREQ:
CHANNEL:
STARTING...
TESTING FOR ANALOG
NOT ENOUGH LEVEL 43.5 < 50 dBµV
TESTING DVB-T
POWER OK 59.3 >= 32.0 dBµV
CALCULATING CHANNEL BW
CANCEL
Figure 9.- Signal automatic identification screen. AUTO ID.
First it recognises whether the signal is an analogue channel or a digital one. If
the channel is analogue, it determines the television standard of the signal. When the
signal is digital (DVB), it analyses for each modulation type QAM / QPSK / COFDM all
the associated parameters such as the modulation system: carriers 2k-8k, symbol
rate, code rate, etc.,. and determines the value of the signals under test.
If the AUTO ID function is launched in the spectrum analyser mode, the name of
the network will appear temporarily on screen (it also appears in the measurement
display). In case of working in the satellite band the orbital position appears as well.
Whenever the process detects new parameters for a channel or frequency will
create a new channel plan containing the detected information.
NOTE: In the case that is desired to explore or identify DVB-C signals will be
necessary to select previously a DVB-C standard as digital signal identifier by
means of
[22] PREFERENCES menu.
5.9 Channel plans
The signal automatic identification process as much as the exploration of the
frequency spectrum could yield the generation of new customised channel plans
relative to the usual work locations of the meter equipment.
In this way the characterisation of the band will be faster and easier when causing
that the equipment only analyses a shorter set of channels.
Page 32 11/2006