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

Custom Digital Modulation (Option 431)Using the Arbitrary Waveform GeneratorCreating a Multicarrier Digital Modulation Setup1. Press Preset.2. Press Mode > ARB Custom Modulation > Multicarrier Off On to On.3. Press Multicarrier Setup > Select Carrier and Initialize Table > Carrier Setup > EDGE > Done.Modifying Carrier Frequency Offset1. Highlight the Freq Offset value (500.000 kHz) for the carrier in row 2.2. Press –625 > kHz.Modifying Carrier Power1. Highlight the Power value (0.00 dB) for the carrier in row 2.2. Press –10 > dB.You now have a custom 2–carrier EDGE waveform with a carrier at a frequency offset of−625 kHz and a power level of −10.00 dBm, as shown in the following figure.For details on each key, use keyhelp as described on page 42.If Digital Modulation is already on, youmust press Apply Multicarrier to applythe changes and generate a newcustom multicarrier digital modulationwaveform based on the updatedvalues.Generating the WaveformPress Return > Digital Modulation Off On.This generates a waveform with the custom, multicarrier, EDGE state created in the previoussections. The display changes to Dig Mod Setup: Multicarrier (Modified). During waveformgeneration, the DIGMOD and I/Q annunciators appear and the new custom, multicarrier, EDGE stateis stored in volatile memory. The waveform is now modulating the RF carrier.For instructions on storing this custom, multicarrier, EDGE state to non–volatile memory, see“Storing a Custom Multicarrier TDMA Digital Modulation State” on page 278.Configuring the RF Output1. Set the RF output frequency to 890.01 MHz.2. Set the output amplitude to −10 dBm.3. Press RF On/Off.The custom multicarrier EDGE signal is now available at the RF OUTPUT connector.Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide 277