System information

S7000 Series TV Analyzer Operation Manual
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3.2.2 DVB-T
The interface of constellation diagram measurement refers to Figure 3-14.
Figure 3-14
The interface also displays the results of MER, CBER and VBER on the current channel. The constellation diagram
supports for the mode QPSK, 16QAM and 64QAM.
The constellation diagram and MER are relevant to the carrier which is selected to measure. S7000 supports for
two kinds of carriers: DATA carrier and TPS carrier.
1） The constellation diagram and the average MER of all carriers. Refer to Figure 3-14.
2） The constellation diagram of the single carrier and MER of sub carrier. Users need to input the carrier
number manually, and S7000 will identify the carrier type automatically.
3.2.2.1 Parameters
 CH, Show the channel number of the current channel.
 FREQ, frequency (5MHz ~1050MHz).
 BW, bandwidth (6MHz, 7MHz, 8 MHz).
 MODE, modulation type (16QAM, 64QAM, QPSK).
 GUARD, guard interval (1/4, 1/8, 1/16, 1/32).
 FFT, fft mode (2K, 8K).
 CARRI, carriers (When FFT is 2K, the carriers range is from 0 to 1704. When FFT is 8K, the carriers range is
from 0 to 6816.).