Deviser S7000 Operation Manual page 54

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 3-13.
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 3.2.2.1 3.2.2.1 3.2.2.1 Parameter Parameter Parameter Parameter
� CH CH
CH CH, Show the channel number of the current channel.
� FREQ FREQ FREQ, frequency (5~1050MHz). FREQ
� BW
BW BW BW, bandwidth (6, 7, 8 MHz).
� MODE MODE
MODE MODE, modulation type (16QAM, 64QAM, QPSK).
� GUARD GUARD GUARD GUARD, guard interval (1/4, 1/8, 1/16, 1/32).
� FFT
FFT FFT, fft mode (2K, 8K). FFT
� CARRI CARRI
CARRI CARRI, carriers (When FFT
range is from 0 to 6816.).
3.2.2.2 3.2.2.2 Operation Operation
3.2.2.2 Operation 3.2.2.2 Operation
� REFRESH
REFRESH REFRESH REFRESH
� SELECT SELECT SELECT SELECT Select the quadrant with red checking box. Refer to Figure 3-13.
� ZOOM+ ZOOM+
ZOOM+ ZOOM+
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S7000 TV Analyzer
FFT FFT
FFT is 2K, the carriers range is from 0 to 1704. When FFT
Refresh constellation diagram and measurement results.
Press the key to zoom in the quadrant which is selected. Refer to Figure 3-14.
Operation Manual
Figure 3-13
FFT FFT
FFT is 8K, the carriers