Scheme 1: f = 250MS/s, effectively producing f = 125MS/s since 2 channels are turned on, both channels always ON.
- t=i --> Trig on chA, acquire chA & chB, get rid of data from chB
t=i+1 --> Trig on chB, acquire chA & chB, get rid of data from chA
Scheme 2: f = 250MS/s , only one channel on at one time.
- t=i --> Turn off B, turn on A, Trig on chA, acquire chA
t=i+1 --> Turn off A,turn on B, Trig on chB, acquire chA & chB
Scheme 2 produces a higher freq data which is better. However, turning on and off the channels produces some overhead, but I am mostly concerned about the robustness of the clicking switch/relay operating every time this is done. I am talking about 1000 times a day... What would you recommend?
Note that I initially was considering using logical triggering, but I had issues with it (separate post in software/LabVIEW forum), plus it does not help on the sampling rate front. I also considered using ETS, but according to the specs it only works with Block Mode, not Rapid Block Mode...