Not earth shattering, but I was inclined to test frequency measurement on my 1204X-E, set to 100s/division, it's a long wait but...

 

Whats the question?

 

Not a question. Just pleased the scope was spot on measuring such a low frequency.

If you need a question, “can the scope accurately measure as low as 1mHz?” And the answer is, “if you wait long enough, it can.”

 

. . . it's a long wait but. . .

Assuming the "Curr" value represents the number of samples in memory, I'm guessing it took a little over 23 minutes to figure out the frequency. Though, with only 1.4 periods to go on, I'm not inclined to believe the given μHz resolution.

 

Assuming the "Curr" value represents the number of samples in memory, I'm guessing it took a little over 23 minutes to figure out the frequency. Though, with only 1.4 periods to go on, I'm not inclined to believe the given μHz resolution.

It matches the function generator's setting, and one the next sample set was a couple of counts under.

Oh, by the way, that's millihertz, not microhertz.

 

Oh, by the way, that's millihertz, not microhertz.

Indeed, but the given resolution implies 10 μHz precision, e.g., that a change of 0.01 mHz is significant.