Keysight EXG and MXG X-Series Signal Generators User’s Guide 281
Using Custom Digital Modulation for N5172B/82B with Option 431 and 653/655/656/657
Using the Arbitrary Waveform Generator
If you have not created and stored a user-defined, single–carrier, digital modulation
state, complete the steps in the previous sections, Creating a Custom Digital Modulation State on
page 277 and Storing a Custom Digital Modulation State on page 279, then preset the signal
generator to clear the stored user–defined, digital modulation waveform from volatile ARB memory.
Figure 9-21 Recalling a Custom Digital Modulation State
1. In the Quick Setup menu, press Custom Digital Mod State.
2. Highlight the desired file (for example, NADCQPSK).
3. Press Select File > Return.
4. Press Digital Modulation Off On until On is highlighted.
The instrument regenerates the custom, digital modulation waveform in volatile memory. After
waveform generation, the custom, digital modulation waveform is available to be modulated on the
RF output.
For instruction on configuring the RF output, see Configuring the RF Output on page 277.
Defining a Modulation
You can build a unique modulation by utilizing two tools, the FSK table editor or the I/Q table
editor. These tables map data onto specific absolute modulation states. To map transitions
between states, a differential table editor is provided.
Mode > ARB Custom Modulation > Single Carrier Setup > Quick Setup
Loads the highlighted file
into the instrument
memory.
These keys manage the table
of DMOD files in internal
For details on each key, use key
help as described on page56.
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