N5161A/62A/81A/82A/83A MXG Signal Generators User's Guide

Using Pulse Modulation (Option UNU or UNW)Pulse CharacteristicsPulse CharacteristicsNOTEWhen using very narrow pulses that are below the signal generator’s ALC pulse widthspecification, or leveled pulses with an unusually long duty cycle, it is often useful to turnALC off (see page 112).Pulse Source Type Period aWidth & Delay a Uses Trigger Event b,SquareInternal free run pulse train with50% duty cycle.Determined byuser defined rate.⎯⎯Free Run(default)Internal free run pulse train User Defined User Defined ⎯Triggered Internal pulse train ⎯ User Defined ✓User Defined:AdjustableDoubletTwo internal pulse trains for eachtrigger event.⎯First pulse is relative to therising edge of trigger signal.Second pulse is relative to therising edge of first pulse.✓See Figure 6- 2 on page 132TriggerDoubletTwo internal pulse trains for eachtrigger event.⎯The first pulse follows thetrigger signal.Second pulse is user defined.See Figure 6- 3 on page 132Gated Internal gated pulse train ⎯ User Defined ✓✓ExternalExternal pulse signal at the rearpanel Pulse connector⎯ ⎯ ⎯a All delays, widths, and periods have a resolution of 10 ns.b A signal at the rear panel pulse connector must be held high for at least 20 ns to trigger an internally generated pulse.Rear panel inputs are described on page 15External pulse inputAgilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide 131