DMMs work pretty well when we want just to confirm whether pulse is there or not. To examine deeper, we will definitley need a scope, especially when we need to see exactly what the waveform looks like. I'm not sure about laptops, but to check high frequency pulse of any smps, a regular multimeter with a broad range of frequency will do perfectly.
Yes you are right This is only a preliminary check to see if it does work or not, but if you have doubts it isn't working properly or generating the right waveform shape then you need a Oscilloscope
