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USER’S MANUAL. PROLINK-4C
Page 30
02/2003
BER (QAM)
Obtains the error rate for the signal found in the tuned channel.
After processing for a few seconds, the screen on the
PROLINK-4C shows the type of modulation, the MER
(modulation error ratio), and the BER (error rate) for the digital
signal before error correction (BER before FEC), the latter two
are shown in analogue form as a bar graph. The instrument
also shows the channel or frequency with the corresponding
deviation, the number of wrong packets received during the
measurement time (W.P.) and information on the type of digital
Multiplex detected (MPEG2, Network, Provider, Bouquet)
which appears cyclically on the screen.
BER (COFDM)
Obtains the error rate for the signal found in the tuned channel.
After processing for a few seconds, the screen on the
PROLINK-4C shows the type of modulation, the CSI (Channel
Status Information) and the BER (error rate) for the digital
signal after error correction (BER after Viterbi), the latter two
are shown in analogue form as a bar graph. The instrument
also shows the channel or frequency with the corresponding
deviation, the number of wrong packets received during the
measurement time (W.P.) and information on the type of digital
Multiplex detected (MPEG2, Network, Provider, Bouquet)
which appears cyclically on the screen.
Satellite band - Analogue channels:
Level
Level measurement of the currently tuned carrier.
C/N
Video carrier to noise ratio (Auto or Referenced,
equivalent to terrestrial band, digital channels).
Satellite band - Digital channels
Channel power
Automatic method.
C/N
Channel level to noise ratio (Auto or Referenced,
equivalent to terrestrial band, digital channels).
BER (QPSK)
Obtains the error rate for the signal found in the tuned
channel. After processing for a few seconds, the screen on
the PROLINK-4C shows the type of modulation, the BER
(error rate) for the digital signal before error correction (BER
before FEC) and the BER after error correction (BER after
Viterbi), the latter two are shown in analogue form as a bar
graph. The instrument also shows the channel or frequency
with the corresponding deviation and information on the
type of digital Multiplex detected (MPEG2, Network,
Provider, Bouquet) which appears cyclically on the screen.
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