Fundamental Operation
Configuring Analog Modulation (PSG-A Series Only)
Chapter 234
Pulse Sources
The following list summarizes the different sources available for pulse modulation.
External Pulse modulates by following an external pulse signal connected
to the signal generator’s PULSE/TRIGGER GATE INPUT
connector.
Internal Doublet produces two pulses at the RF OUTPUT connector for
each trigger event at the TRIGGER IN connector. The first
pulse will follow the external trigger signal. The second
pulse will have user-defined delay and width parameters.
Internal Free-Run produces internal, free-run, pulse modulation with
user-defined period, width, and delay.
Internal Gated produces an internal, gated, pulse modulation. When a
valid gate signal is applied to the TRIGGER IN connector,
a pulse train (with user-defined width parameters) will
occur at the RF OUTPUT connector.
Internal Trigger produces an internal, triggered, pulse modulation. An RF
pulse (with user-defined width and delay parameters) will
occur at the RF OUTPUT connector whenever a valid
trigger signal occurs at the TRIGGER IN connector.
Internal Square produces internal, square, pulse modulation. This is a
form of internal free-run pulse with a 50% duty cycle. The
period is determined by rate.
For a detailed description of the behavior, ranges, and limitations of a specific pulse source,
see that waveform’s softkey description in Chapter 5, “Key Reference,” on page 91.
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