sampling channel & displaying on same graph

[tinnitus]

Hello everyone,

i have a question that should be often meeted  , but that i don't know how to solve.

i sample x channels that can be  1 to 10 for example, so my state machine scan like this ch1,ch2,ch3......ch1,ch2,ch3.

My probleme is that if there was few ms betwwen each channels i couls admit they have all same data of acquisition and

waiting all channels reading and ploting them (on "ring " chart)  at same date time, but here

delay between channel is 3s minimum up to 10 s.  

 What kind of way should i adopte :

for moment i tried two ways but not satisfing:

1) at each channel acquisition i remember all other channels for this date time, so i obtain a graph with many flat moment between each cycle .

and the more channels i have the more they look square

2) i put a Nan value for aquisition for channels not concerning by current aquisition, this way is much close that i want to obtain , the probleme

is this method is that between real acquisition plots the chart cannot draw a line between them and i have for result a curve a multicolored

dots not linked and too hard to interpret

So my question is is there a third or fourth solution ?

in attachement images to illustrate the probleme

Best regards Tinnitus

[GerdW]

Hi Tinnitus,

3rd option:

Make each channel a single xy-plot keeping track of it's DAQ timestamps! Plot all "tracks" on a XY-graph...

[ajangot]

Hi,

You can create a XY graph like this

If you put the same x-axis, you will have synchronous Y-axis. If you want to see the timestamp you can replace index by the vi Get date.

Regards

[tinnitus]

Hello,

Sorry, i think i don't express correctly, i will try to make an vi example to 

clarify my problem

regards

Tinnitus