N5161A/62A/81A/82A/83A MXG Signal Generators User's Guide

Basic Digital Operation (Option 651/652/654)Modifying a FIR Filter Using the FIR Table EditorLoading the Default Gaussian FIR FileFigure 8-23 Loading the Default Gaussian FIR FileMode > Dual ARB > Arb Setup > More > Real-TimeModulation FilterFor details on each key, use key help as described on page 42.These softkeys select awindow function(apodization function) fora filter.1. Press Preset.2. Press Mode > Dual ARB > Arb Setup > More > Real-Time Modulation Filter > Define User FIR > Gaussian.3. Press Filter BbT > 0.300 > Enter.4. Press Filter Symbols > 8 > Enter.5. Press Generate.NOTEThe actual oversample ratio during modulation is automatically selected by the instrument. Avalue between 4 and 16 is chosen dependent on the symbol rate, the number of bits persymbol of the modulation type, and the number of symbols.6. Press Display Impulse Response (refer to Figure 8- 24).214 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide