Cofdm Impulsive Response (Echoes Detection) - Promax PROLINK-3 Premium Manual De Instrucciones

Once an acquisition has been initiated, the instrument automatically passes to
MANUAL POWER mode to aid acquisition over the long term. To finish acquisition,
press the rotary selector [4] over the Stop option, then appears a validation request
message, to press the key
acquisition. The interruption of an acquisition supposes its definitive conclusion.
The first line on the screen shows the events that have been detected once at
least from the acquisition beginning. Should any of the events on table 2 be produced,
these will be displayed cyclically, indicating the number in case of being W.P. class, i.e.
non-correctable packets. Turn the rotary selector [4] to access the list of events
recorded in different pages.
To leave the screen once you have finished the acquisition, use key
to select Exit and press the rotary selector.

4.9.1.5.5 COFDM impulsive response (Echoes Detection)

To select the COFDM impulsive response:
1) Select the TV operating mode. If present operating mode is the spectrum analyser
mode press key
2) Select the terrestrial band for the measurement of COFDM modulated signals.
Available frequency ranges are:
COFDM signals
3) Select the DIGITAL operating mode by means of the key
4) Select the DVB-T (COFDM) measurement mode: to do this press key
and turn the rotary selector [4] to select the BER (COFDM) measuring mode, next,
to activate it press the rotary selector [4] or key
Before visualizing the representation of the impulsive response is necessary to
define some parameters concerning the digital signal (see section '4.9.1.5.2 Measuring
BER of COFDM Digital Channels (COFDM)' ).
5) Press the rotary selector [4] to access the functions menu in digital mode, and
select the Echoes Detection option to access the impulsive response screen.
The Echoes Detection function represents graphically the different instances
from the same signal that arrive at the receiver, based on the time and the distance.
Page 50
[31] and the rotary selector [4] for finishing the running
[21].
40 MHz to 862 MHz
USER'S MANUAL. PROLINK-3/3C
[22].
Premium
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[20].
[22]
06/2005