Selecting The Measurements - Promax TV EXPLORER HD Manual De Usuario

5.13 Selecting the Measurements

The types of measurements available depend on the operating band (terrestrial or
satellite) and the type of signals (analogue or digital).
Terrestrial band - Analogue channels:
Level Level measurement of the currently tuned carrier.
Video / Audio Video carrier to audio carrier ratio.
C/N Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth. (according to TV standard)
FM Deviation Measure the frequency peak deviation for any modulated
analogue carrier in FM.
Terrestrial band - Digital channels (DVB-C and DVB-T/H):
Channel power Channel power is measured assuming that power spectral
density is uniform throughout channel bandwidth.
To measure it correctly it is indispensable to define the
Channel BW.
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 with noise margin indication.
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/S2):
Channel Power Automatic method.
C/N Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth.
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USER'S MANUAL. TV EXPLORER HD
11/2009