Agilent / HP / Keysight 8112A

This unit is a fully programmable 50MHz pulse generator with 5ns transitions and 32Vpp (into open circuit) max output amplitude.

All pulse parameters are variable including delay and double pulse spacing.

Besides the comprehensive trigger modes, external modulation capabilities extend applicability.

This has 3-level signals and upper level, width, period and delay-modulated signals are available.

These can be combined with the trigger modes so that complex real life signals like modulated bursts are simulated easily.