EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Plasmateur on September 14, 2016, 02:19:28 am
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This question pertains especially to the owners of a Tektronix DPO3054 or Rigol 1054z oscilliscope, but those with knowledge about the process may know exactly what I'm looking for.
I'm attempting to trigger my scope, and then write the acquired data to disk in the shortest amount of time. The shortest interval I am able to achieve is ~ 1 second.
Setup:
1.) Pulse delay generator is used to trigger Tektronix DPO3054 and a AWG which is connected to the scope.
2.) Labview communicates through GPIB to pulse delay generator - clock starts
3.) Pulse delay generator triggering AWG and scope
4.) Labview acquires data writes in binary format on hard disk via USB - clock stops. ~ 1 second has passed.
5.) Repeat steps 1-5.
If I could reduce the interval of this process by a factor of 10 or more, this would optimal.
Does anyone have experience in this area?
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How much data? How does the PC interface with the DSO? What's the BW of this interface? What is the bottleneck?
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This is typically done with a digitiser, which is basically the same as a scope front end but has a faster interface to the host environment. Then you can have high speed storage attached to your computer/server etc and save the data much faster than with an oscilloscope. Some scopes are better than others of course:
https://www.eevblog.com/forum/projects/software-tips-and-tricks-for-rigol-ds200040006000-ultravision-dsos/msg908494/#msg908494 (https://www.eevblog.com/forum/projects/software-tips-and-tricks-for-rigol-ds200040006000-ultravision-dsos/msg908494/#msg908494)