I'm assuming that you are talking about the driver
here? I'm not sure what you mean by "id's listed". Each function in the driver has help associated with it and is visible when you have Context Help turned on. Unfortunately, the function called ag86100a Set Oscilloscope Config1_2 is what you would use to set a measurement but neither duty cycle or delay time is one of the available measurements. If the scope supports these, I can't imagine why Agilent didn't include them in the driver they wrote. They did include ag86100a Write Instrument Data and ag86100a Read Instrument data so you can look up the syntax for the commands you need in the instrument manual and send them and get the data back.