Trigger Source
In the sweep mode, the function generator outputs a single sweep when a trigger signal is received. After one sweep from the start frequency to the stop frequency, the function generator waits for the next trigger while outputting the start frequency.
The number of outputs and the parameter choices vary by instrument. Some of the options described may not be available for a particular instrument. The Function Generator application will only list settings and values that are available for the selected instrument type.
- When the Internal (immediate) source is selected, the function generator outputs a continuous sweep at a rate determined by the sweep time specified.
- When the External source is selected, the function generator will accept a hardware trigger applied to the rear-panel Trigger connector. The function generator initiates one sweep each time it receives a TTL pulse with the specified polarity.
- When the External source is selected, you can specify whether the function generator triggers on the rising or falling edge of the signal on the rear-panel Trigger connector (see Trigger Slope).
- When the Manual source is selected, the function generator outputs one sweep each time the front-panel Trigger key is pressed.