Once these connections are made, the graph will display a square wave as shown: Just above the graph display is the average value of the waveform. As shown, you will need to wire from screw terminal 1 (Channel 0 HI IN) to screw terminal 21 (Port A, bit 0 ), then another wire from screw terminal 2 (Channel 0 LO IN) to screw terminal 3 (Low Level Ground or LLGND). Using the view shown above, the wiring instructions are displayed below the graph. To aid you in this process, depending on the device you have to test, there are wiring instructions either below the graph or to the right of the graph. So if you were putting in a sine wave with 0V DC offset, the numeric display would be close to 0VDC because the average values for the sine wave would work out to 0 mathematically.ģ Once you have selected the Input Channel, Signal Source, and A/D Range you want to use as test parameters, you will then need to make the connections to make it Loop Back. Above the graph is a numeric value of the entire graphed data, averaged. The graph displays the data acquired during the test in real time. Again, the list of available ranges varies depending on what data acquisition device you are using. A/D Range is the voltage range you want to use to measure your input signal. The list varies depending on what hardware from Measurement Computing you are using. Signal Source is a list of digital bits, counters, analog outputs (DACs) or may be set to External. This combo box will only show you the channels you have available based upon your configuration of Single Ended or Differential (if your hardware has that option). ![]() Input Ch, or Input Channel is how you select the input A/D channel you want to test. 2 As you can see, there are 3 combo boxes, labeled Input Ch, Signal Source, and A/D Range.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |