NOTE The maximum number of data points that may be acquired for a test run is 100,000. Adjust your Sampling Rate to the desired duration while maintaining the limit on the number of data points acquired for your test. 3.2.1.7 Last Setup Step The Last Setup Step option is useful when you are performing the same test setup on multiple samples or parts ( a “batch” of parts). The ASK step may be used (at the beginning of the test setup) to ask questions that only need to be answered once, such as “Operator Name” or “Fixture ID”. These ASK steps will be skipped on the second and subsequent runs of the test if the Last Setup Step is set to the first step after them.
3.2.1.6 Sampling Rate (Hz) The Sampling Rate (Hz) option is the number of data points acquire during the test run per second. The factory default is 100 samples per second, which is approximately three to five times more data than systems that sample via RS232. The Sampling Rate (Hz) option may be any value between 0.001 and 2000. Enter the value you require in the text block. NOTE The maximum duration for a test run is 48 hours. This applies to Hold and Cyclic steps. Adjusting the sampling rate to 0.5Hz will allow for a 48 hour test. NOTE The greater the sampling rate number the more susceptible the test run is to noise. So a higher number won’t necessarily provide you with better results. High sampling rates are useful in detecting maximum points, but this can be susceptible to noise. NOTE If you are attempting to correlate new data from your L2 Plus system with data from an older machine that used RS232 or that had a lower sampling rate, you should set the Sampling Rate (Hz) to a lower number, e.g. 20. You can then compare and correlate. Modify the rate until you’re historical data and new data correlate.
If using the Last Setup Step feature, enter the Step Number in your test setup sequence where you want start remaining test runs from, e.g. you will skip this step and all steps previous to this one. If you enter 3, all subsequent test runs will begin at Step 4.
Set the number of samples per second to be acquired during a test setup using the Sampling (Hz) option. 100 is the factory default and represents data acquired at 100 samples per second. These data points are exported when Export Raw is specified in the Post Test step. These points are also used to calculate results.
L2 Plus Test Builder - Pre Test Data Sampling (Hz) This test has a Sampling Rate of 20 samples per second
L2 Plus Test Builder - Pre Test Last Batch Step Enter the Step number that you want all subsequent test runs to start from
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