accuracy of analog input timing?

[micahsimonsen]

Hello,

We're taking some analog data synchronized with a high-speed camera; I think we'll be using our workhorse 6023e. We have a start pulse (triggering) and a TTL sync pulse (timing) from the camera, and it should be straightforward. One thing - our customer is concerned about the timing accuracy.

Is there a spec or estimate somewhere for the typical time lag between the TTL trigger coming in, and the analog sample being acquired? This would be at around 5kHz. I checked the spec sheets and found timebase accuracy but not the accuracy with an external TTL trigger.

Thanks in advance for any help anyone can provide!

[Raajit_Lall]

Hello,

If you are using an external signal, the time from the first trigger to the first conversion will be 338ns + (One period of the pulse train). This is the worst case scenario. This is true only for the the DAQ STC chip for E-Series devices.

Regards,

Raajit Lall | Applications Engineer | National Instruments