8psk (phase shift keying) – Tektronix MTM400 User Manual

Page 173

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Interface Configuration and Interpretation

MTM400 MPEG Transport Stream Monitor User Manual

3-129

Equalizer

The equalizer coefficients are plotted across the graph display.
The display illustrates the presence of multi-path echoes by
indicating how the equalizer is adjusting to cancel them out.

NOTE. The Equalizer graph amplitude values are only
approximate.

Equivalent MER An MER (Modulation Error Ratio) calculation is performed on

the in-phase (I) data samples. The quadrature data samples are
ignored in this calculation.

8PSK (Phase Shift Keying)

The 8PSK Settings dialog box is shown in the following screenshot:

Figure 3-48: 8PSK interface configuration (example)

For each of the settings, enter the required change and select Set to apply the new
value.

NOTE. These settings can also be made from the Input Card screen.

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