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USER'S MANUAL. TV EXPLORER HD +
5.14.8 Digital TV: Measuring MER
Once determined the suitable parameters for COFDM, QAM, QPSK or 8PSK
signal reception, it will be possible to measure MER, press
the MER measurement screen.
Figure 43.- DVB-T/H (COFDM) signals MER measurement screen.
First of all, you will see the modulation error ratio measurement: MER.
Following, it appears the Noise Margin (NM) measurement (in the figure value
8.4 dB). It indicates a safety available margin according to the MER level measured that
allows signal degradation until arriving to the QEF (Quasi-Error-Free) limit value.
Figure 44.- DVB-S2 (QPSK/8PSK) signals MER measurement screen.
12/2011
[12] key until it appears
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