Key Reference
A
Chapter 5 111
AM Rate
Supported PSG-A Series
This softkey enables you to change the frequency for the internally generated
modulation source.
Preset 400.0 Hz
Range 0.5 Hz
−
100.0 kHz (minimum increment allowed is 0.5 Hz)
0.5 Hz
−
1.0 MHz if sinewave is selected as the internal waveform
Location Page 230
Remarks The new value of AM rate applies only to the AM configuration you
have currently selected.
AM Source
Supported PSG-A Series
Use this softkey to access a menu of choices that enables you to select either an
internally generated or an externally applied source for amplitude modulation. The
internal modulation is always ac-coupled.
Preset Internal 1
Choices Internal 1 Internal 2 Ext1 Ext2
Location Page 230
Remarks A 1.0 volt peak voltage input is required for calibrated AM depth
settings. The EXT 1 LO/HI and EXT 2 LO/HI display annunciators will
turn on if the peak input voltage differs from 1.0 by more than 3%.
(The LO/HI annunciators only function for ac-coupled external inputs.)
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