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

Custom Digital Modulation (Option 431)Using the Arbitrary Waveform GeneratorStoring a Custom Multicarrier TDMA Digital Modulation StateUsing this procedure, you learn how to store a custom, multicarrier, TDMA, digital modulation stateto non–volatile memory.If you have not created a custom, multicarrier, digital modulation state, complete the steps in theprevious section, “Creating a Custom Multicarrier TDMA Digital Modulation State” on page 276.Figure 11-11 Storing a Custom Multicarrier SoftkeysFixed: All the carriers are set to aphase of 0.Random: All of the carriers areset to a random phase value.page 43For details on each key, use key help asdescribed on page 42.1. Return to the top–level Digital Modulation menu, where Digital Modulation Off On is the first softkey.2. Press Multicarrier Setup > More > Load/ Store > Store To File.If there is already a file name from the Catalog of MDMOD Files occupying the active entryarea, press the following key: Clear Text3. Enter a file name (for example, EDGEM1) using the alpha keys and the numeric keypad with amaximum length of 23 characters.4. Press Enter.The user–defined, multicarrier, digital modulation state is now stored in non–volatile memory.NOTEThe RF output amplitude, frequency, and operating state settings are not stored as part of auser–defined, digital modulation state file.Applying Changes to an Active Multicarrier TDMA Digital Modulation StateIf the digital modulation format is currently in use (Digital Modulation Off On set to On) while changesare made in the Multicarrier Setup table editor, you must apply the changes before the updatedwaveform will be generated.From the Multicarrier Setup table editor, press Apply Multicarrier to apply the changes and generatea new custom multicarrier digital modulation waveform based on the updated values.278 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide