Analog Discovery 2 - Ni Edition

[Ab25]

Hi, 

I just started using analog discovery 2 - Ni edition. I have noticed some discrepancies but I'm not sure what is wrong, i hope you all can help me. 

I have generated a sine wave with 10KHz frequency and 10Vpp  and I measured it using my analog discovery 2 the connections are as follows :

Func gen +ve -> 1+ (analog discovery 2)

Func gen -ve -> GND (analog discovery 2)

for the op I should be getting a sine wave with f= 10KHz and 10Vpp but I'm only getting 2Vpp. Where am I going wrong? 

 

next, 

I generated 10KHz sine wave using W1 with Amplitude 2V but the DSO measures 456mVpp & the frequency is measured correctly. 

 

I'm attaching all the screenshots below for your references, thank you. 

 

 

[attila]

Hi @Ab25

As you can see in the Wavegen preview the amplitude by default refers to half of the peak 2 peak. This can be changed under the gear menu.
I don't know what are you referring with ve+/-.
Your bench AWG has 2 channels with 50R output, probably it expects 50R termination and without this, the float output is twice of the set value. 
Your oscilloscope probe is probably at 10x which divides the input voltage by 10. Having the scope configured to 1x you will read 1/10 of the voltage at the tip.
 

[Ab25]

18 hours ago, attila said:

Your oscilloscope probe is probably at 10x which divides the input voltage by 10. Having the scope configured to 1x you will read 1/10 of the voltage at the tip.

my scope was at 1x and my wavegen was at 1x 
I changed my scope to 10x 
& now when I give 2Vpp @ 10KHz I'm reading 2.32Vpp in my scope.

 

Also, by +ve and -ve, I was referring to the signal and ground of the probe. 

[Ab25]

18 hours ago, attila said:

Hi @Ab25

As you can see in the Wavegen preview the amplitude by default refers to half of the peak 2 peak. This can be changed under the gear menu.
I don't know what are you referring with ve+/-.
Your bench AWG has 2 channels with 50R output, probably it expects 50R termination and without this, the float output is twice of the set value. 
Your oscilloscope probe is probably at 10x which divides the input voltage by 10. Having the scope configured to 1x you will read 1/10 of the voltage at the tip.
 

I tried using the Discovery BNC aswell, there are some amplifications happening with the probe. 
technically when we have BNC-BNC connection it is matched right so at 1x probe it should both show the same values right?

 

[attila]

yes