on board memory speed

[hussey]

hello

i am trying to develop a application of data genration as well as acquire same and storing it in system file.

data genration and acquisition is doing by NI DAQ 6251.

genrating data from one Analog output and acquiring same data at 2 channel of analog input port.

after genration of analog output i am amplifying it through external circuit and voltage drop across resistor (within +/- 10V DC) and acquiring same at input port 1 and 2.

suppose if we start voltage genration like ramp.( one start poin, one stop point and one resolution-incriment point).

this all SCAN time is approximate 20 sec. SCAN time is fully dependent on resolution of point.

so can i make it faster(improvement) through on board memory facility or it can make Delay in SCAN time

[crossrulz]

You are always using the onboard memory.  All you have to do is make sure you are set to Continuous Acquisition and tell the DAQmx Read to get more than one sample.

[hussey]

hi

suppose if i use DAQ card NI USB 6366(facility of on board memory), then speed of acquisition will increase or not???

[crossrulz]

Hardware timing will be a lot more accurate and faster than software timing.  So yes.