System information

S7000 Series TV Analyzer Operation Manual
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3.2 Constellation diagram
The constellation diagram function is used for observing the constellation diagram and the relevant parameters
of the digital channel. It supports for DVB-C, DVB-T/T2 and DTMB.
3.2.1 DVB-C
The interface of constellation diagram measurement refers to Figure 3-11.
Figure 3-11
The interface also displays the results of MER and BER on the current channel. The constellation diagram
supports for the mode 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 8VSB and 16VSB.
3.2.1.1 Parameters
 CH, Show the channel number of the current channel.
 FREQ, frequency (5MHz ~1050MHz).
 MODE, modulation type.
When STD is J.83A and J.83C, MODE is 16QAM, 32QAM, 64QAM, 128QAM and 256QAM;
When STD is J.83B, MODE is 64QAM and 256QAM;
When STD is J.83D, MODE is 8VSB and 16VSB.
 SR, symbol rate.
When STD is J.83A, J.83B and J.83C, SR range from 4 MS/s to 7 MS/s;
When STD is J.83D, the fixed SR is 10.762 MS/s.
 STD, standard (J.83A, J.83B, J.83C, J.83D).