68 N9310A User’s Guide
4Key Reference
FM Source Pressing this softkey chooses a phase modulation source.
• Default value: INT
• Key sequence: > FM Source
FM Rate Pressing this softkey modifies the internal modulation
frequency. The active entry area displays the current value
of FM rate. The allowed values range is 300 Hz to 80 kHz.
The minimum increment is 0.1 Hz. when external FM source
is selected, this softkey is disabled.
• Default value: 1.0000 kHz
• Key sequence: > FM Rate
FM Waveform Pressing this softkey reveals a submenu of FM waveform
choices.
• Default value: Sine
• Key sequence: > FM Waveform
FM
FM
FM
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