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Found 3 results

  1. Hello, I am trying to get my Keithley3706A up and running with LabVIEW but there are still some problems I am facing. I want to measure x channels with usage of filter. So I want to measure each channel x times and filter the results. I have found some functions like: dmm.filter.enable = True dmm.filter.count = 100 dmm.filter.type = dmm.FILTER_REPEAT_AVG dmm.filter.window =0,1 but it seems it still wont work. I am using the vi's Keithley itself provides on their homepage. Another problem I have is that I cant get more than 9 values into my buffer, for example if i want to create a scanlist with 1001:1010 I only get one value. If i create my scanlist with 1001:1009 it works just fine. I could not find any reference to this problem by now. thanks in advance Sagi
  2. I'm reading a sine wave generated by a AO DAQ and reading this same signal with another AI DAQ and a DMM at the same time. AO is set at 0.65V AI RMS reads 0.5V±0.0056 DMM reads 0.46053V ± 0.00001 0.65/1.414=0.46 so the DMM read is accurate. What makes the RMS LabVIEW function not reporting the accurate information? Could it be the Glitch Energy affecting the read? On a side note, I also need an accuracy of 0.2%. AO generates a 3KHz signal at 0.65V (450KS/s @ 150S/Buffer). AI reads at 90KS/s at 15KS/channel. DMM a 34401A is set VAC. Thanks
  3. Hello, The 34401A is not longer available in Canada. We need to change and use the 34461A as a replacement and we are having trouble with the peak-to-peak measurements (We are using LabVIEW). We use the peak-to-peak option while reading a communication line in order to get the min and max values. The code: Visa Write 34410A CONF:VOLT:AC VOLT:AC:PEAK:STAT ON INIT FETC? Visa Read Visa Write FETC:VOLT:AC:PTP? Visa Read This code no longer works with the 34461A. Reading the AC will only give the RMS values. We dont really care how to get the min-max of the communication channel, as long as it is in a respectable time (10s at most...). Reading the signal with DC is not fast enough. The communication signal is ±100mv. We verify the min-max range to be around 200mV. Thanks
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