Analyzing Response time of Comparator

[kankanas]

Hi,

I am trying to find the response time of the LM311 Comparator. In the datasheet, the test condition is mentioned as "a 100-mV input step with 5-mV overdrive".

I am a bit confused about the input of the ckt to be taken. I am attaching the schematic which I can think of now.
I visited various sources online, but the inputs to be taken are not clear.

Please correct me if my understanding is wrong.

[kankanas]

Below attached images..

[mikerj]

Set V5 to 95mv.  This gives you a 100mV input swing with 5mV (i.e. 100-95) overdrive.  Also it's not good practice to set rise and fall time to zero, it's an unrealistic value that can sometimes cause convergence problems in SPICE.

[kankanas]

Is this ok?

[mikerj]

Yes that looks ok.