Tektronix MTM400 Uživatelský manuál stáhnout pdf (Strana 173)

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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Tektronix MTM400 Uživatelský manuál Strana 173