VNA supports up to four onboard digital pulse generators, which can generate pulses for synchronizing external devices to the VNA Pulse Trigger.

Each pulse generator outputs a digital pulse for each asserted pulse trigger. Pulse generators operate independently, allowing you to set different delays and pulse widths for each. You can export generated pulses to PFI ports or to PXI trigger lines.

Your application may require a digital pulse with its ON duration coinciding with the active duration of the RF pulse. An onboard pulse generator can be used to generate such a pulse, by setting the value of the Pulse Generator Delay attribute to match the Pulse Modulator Delay attribute and setting the value of the Pulse Generator Width attribute to match the Pulse Modulator Width attribute. RF Modulator Delay is the time it takes for the RF pulse to settle after the Pulse Modulator Drive signal is turned ON. RFmx automatically adjusts each pulse generator’s delay to compensate for the RF Modulator Delay. However, reading back the Pulse Generator Delay attribute returns the user-configured value of the pulse generator delay only, and not modulator-delay compensated value.