Hello.
I´m using Labview 7.1 to digitize 50Hz AC signal with the DCV function of multimeter 3458A interfaced via a GPIB-USB card. I need to take 1024 samples with a sampling rate of 1024 samples per second, and the integration time must to be 0.5 ms to digitize the signal with very high resolution.
I have downloaded the National Instruments VISA drivers for 3458A and I have made a program that set both the MFORMAT and OFORMAT to DINT to achieve the fastest possible transfer of samples to reading memory. The program selects level triggering when the input signal crosses zero volts on its positive slope. The program works fine with a sampling rate of 512 Hz, but if I increase the sampling rate up to 900 Hz the multimeter generates the TRIGGER TOO FAST error.
How may I solve this problem without decrease the integration time?
Using my program with the examples of DCV Digitizing of the Agilent 3458A User´s guide, I have the same problem.
Thank You very much!!!!
Tomás García.
