USER’S MANUAL. PRODIG-5
11/2006 Page 45
English
C/N Out-channel measurement. Noise level is measured at f
noise
=
f
tuning
± ½*Channel BW. To measure it correctly digital
channel must be tuned at its central frequency.
MER Modulation error ratio.
CBER BER measurement (Bit error rate) for the digital signal before
error correction (BER before FEC).
VBER BER measurement (Bit error rate) for the digital signal after
error correction (BER after Viterbi).
Satellite band - Analogue channels
Level Level measurement of the currently tuned carrier.
C/N Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth.
Satellite band - Digital channels (DVB-S):
Channel Power Automatic method.
C/N Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth.
MER Modulation error ratio.
CBER BER measurement (Bit error rate) for the digital signal before
error correction (BER before FEC).
VBER BER measurement (Bit error rate) for the digital signal after
error correction (BER after Viterbi).
In order to change the measurement mode press
[12] key. On the monitor
will appear cyclically all the measures available for the tuned signal.
5.14.1 Analogue TV: Measuring the Video Carrier Level
In the measurement mode of analogue signals, the PRODIG-5 (
EXPLORER),
monitor can work as an analogue indicator of level representing the signal present in
the input.
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