1mHz measurement on a Siglent 1204X-E

Thread Starter

Yaakov

Joined Jan 27, 2019
1,612
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...

upload_2019-5-17_6-32-59.png
 

Thread Starter

Yaakov

Joined Jan 27, 2019
1,612
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.”
 

bogosort

Joined Sep 24, 2011
459
. . . 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. ;)
 

Thread Starter

Yaakov

Joined Jan 27, 2019
1,612
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.
 
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