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Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide 205
Preliminary Basic Digital Operation (Option 651/652/654)
Preliminary Modifying a FIR Filter Using the FIR Table Editor
Loading the Default Gaussian FIR File
Figure 8-23 Loading the Default Gaussian FIR File
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.
NOTE The actual oversample ratio during modulation is automatically selected by the instrument. A
value between 4 and 16 is chosen dependent on the symbol rate, the number of bits per
symbol of the modulation type, and the number of symbols.
6. Press Display Impulse Response (refer to Figure 8-24).
Mode > Dual ARB > Arb Setup > More > Real-Time
Modulation Filter
These softkeys select a
window function
(apodization function) for
a filter.
For details on each key, use key help as described on page42.