In the frequency sweep mode, the 81150A / 81160A “steps” from the start
frequency to the stop frequency at a sweep rate which you specify. You can
sweep up or down in frequency, and with either linear or logarithmic
spacing. You can also configure the 81150A / 81160A to output a single
sweep (one pass from start frequency to stop frequency) by applying an
external or manual trigger. The 81150A / 81160A can produce a frequency
sweep for sine, square, ramp, or arbitrary waveforms (pulse, noise, and dc
are not allowed).