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

Custom Digital Modulation (Option 431)Using Finite Impulse Response (FIR) Filters in ARB Custom ModulationFigure 11-13Creating a User–Defined FIR Filter Using the FIR Filter Table EditorMode > ARB Custom Modulation> Single Carrier Setup > Filter > DefineUser FIR > More 1 of 2 > Delete All Rows > Confirm Delete of All RowsFor details on each key, use key help as described on page 42.Opens a menu thatenables you to selectand load a saved fileinto volatile memory.See page 43.page 208Active only when:FIR filter coefficient tablehas minimum of twovalues visible.Note:Modulation filters are typically real and have an oversample ratio (OSR) of two or greater.Equalization filers are typically complex and have an oversample ratio (OSR) of one (Dual ARB only).Entering the Coefficient Values1. Press the Return softkey to get to the first page of the table editor.2. Use the cursor to highlight the Value field for coefficient 0.3. Use the numeric keypad to type the first value (−0.000076) from Table 11- 1. As you press thenumeric keys, the numbers are displayed in the active entry area. (If you make a mistake, you cancorrect it using the backspace key.)4. Continue entering the coefficient values from the table in step 1 until all 16 values have beenentered.Table 11-1Coefficient Value Coefficient Value0 −0.000076 8 −0.0356671 −0.001747 9 −0.1167532 −0.005144 10 −0.157348280 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide