what is "Measurement update rate"?

[oldaaron]

In keysight Infiniium series devices , there is a metric "Measurement update rate" as follows:

But there arn't any resources  explain what the metric is and if  I can  use the metric estimate my measurement speed. Can anyone  give some information about this metric?Thanks.

[DaJMasta]

How many times a second the on screen numeric measurements (Vpp, frequency, Vmax, period, etc.) are updated.

Your scope captures the waveform and the rate at which it can get it on the screen (blended, since there's limited screen refresh rate) is the waveform updates per second, this is the same idea, but it's the speed the instrument can measure whatever parameter from the waveform and then update that number instead.  The reason it goes up for multiple displayed measurements is that the instrument can do several in parallel, but the number is the total number of measurement updates, so each of the ten measurement can only be updated 25,000 times a second.

Seems pretty fast to me.

[Someone]

It is of interest when collecting histograms/limits/statistics on measurements, but as you have noted there is little to tell you under what conditions that will occur. Does your signal have enough measurement events to even push those limits?

[oldaaron]

Does your signal have enough measurement events to even push those limits?

That's what I think wired. It seems that the update rate of infiniium is slow. I find the update rate of the devices is less than 1000.  There is no way making the device responde to so much events .

[Someone]

Does your signal have enough measurement events to even push those limits?

That's what I think wired. It seems that the update rate of infiniium is slow. I find the update rate of the devices is less than 1000.  There is no way making the device responde to so much events .

It makes measurements across the whole window, if there are multiple periods it will update period/frequency with multiple values. You can see this in the video on jitter analysis:

While the update rate of the display is relatively slow, the update rate of measurement data can be much higher.

[oldaaron]

Thanks for your information.