Y axis - tension by range control

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  Hello

  I'm working on an IviScope driver for a scanning module.

  I have a question that keeps me busy.

  Take, for example, the IVISCOPE_ATTR_VERTICAL_RANGE attribute.

  My instrument has 8 fixed vertical lines. If the application selects a vertical range which is not exactly one of these fixed ranges, the pilot takes the rangetable and converts the value of the next range of fitting.

  But if the application specifies a vertical range that is beyond the capabilities of the instrument (i.e. 50Vpp, where the instrument is only 20Vcc), test intervenes, saying "invalid value for the parameter or property. Even if in the InitWithOptions() option string I specify "RangeCheck = 0". With disabled test, I expect the driver to do any range of control, but only through force. Am I wrong? And the value might be forced to match maximum vertical range of the instrument?

  Kind regards

  gggggl

  I'm sorry. You can skip the last answer. I update as follows:

  Normally, if you call the InitWithOptions function with "RangeCheck = 0" in the chain of the option and the type of range table is IVI_VAL_RANGED, the set value will be set to the instrument without change and will produce a specific error of the instrument. If the type of the range is IVI_VAL_COERCED, the value will be converted even if you set RangeCheck to zero. In this case, you must make sure that the range table defines the constraint clearly rules. Otherwise, a runtime error c appears when you run the code.

  If the attribute that you want to set is associated with a hidden attribute, you must check the interval methods too. It is more difficult to describe. You can edit the problem clearly to analyze it.

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  The minimum and maximum labels are transmitted separately when displaying a scale (even if technical RangeDivisionsMode custom can be used for the minor divisions).

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• PID change of range change P param too?

  Hello

  I have a very general question on the PID control. (I have the pid toolkit)

  I have a process value is measured (PV, it's the temperature), and I have a fixed setpoint. The output of the PID readers regulator current source (Keithley 2400 sourcemeter). When the PV is far (the State) of the target value, production is expected to be high enough to reduce the transitional period. So let's say, we start with the 1Amp range control in the Keithley. Of course, when the PID does not need too high output, I can go down, first at the beach of my 100 and so on. Also, when I change the range of the Keithley, I change the Terminal value of maximum/minimum scope on the vi of PID.

  (Of course, the much better resolution of the Keithley to 1mA compared to 1 ampere)

  I have PID adjust such a system at 1 ampere range, for example, and I have the P, I, D params. If I move the range of 1 ampere to the 100mAmp range, do I need to change the P parameter?

  Thank you!

  It depends on.  If you feed the Keithley in absolute real units (milliamps or amperes) value so there is not need to change the PID gains.  If the value of the Keithley is a relative unit - for example a percentage of full scale - then Yes, you need to adjust your P gain such as changes in range full scale.

• How can I check the addons allowed / tool boxes installed in the LabVIEW environment controls palette?

  Hi all

  I allowed for students to install the version of LABVIEW. I'm new to the LabVIEW.
  I installed license Toolkit LabVIEW Digital Filter Design in my laptop. But I can't find the options of digital filter in treatment of the signal from the controls palette. Its not there despite the installation. I checked in the license OR Manager he said toolkit Digital filter design has been enabled for this computer.
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  Hello

  LabVIEW 2014 32-bit, he will find-> design of digital filters signal processing.

  In Labview 2014 64-bit, I can find it or the other. I know that some tools are not supported in LV 64-bit.  I couldn't find documentation on the system requirements for this toolkit so I could not say it, maybe you can change at LV 32 bits?

  Good luck

  Danielle

• Position the pickwhip Y a layer to another position there, each layer with its own respective range

  I am wanting to pickwhip the y-axis of 'Layer A' with the y-axis "Layer B". I want the ' layer "s y, axis set between 0 and 100, to adjust ' layer B" s y-axis at a range of 25 to 75 at the same time. Can someone please?

  Thank you!

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• Nodes property and rings of Menu

  So I have this multimeter I need to make a driver for, and it has so many modes/scales of operation it will be a pain.

  

  So that's what I'm working with, there are a lot of 'functions of measure', including the tension continues, alternating voltage, current DC current alternative, etc, there is more than what is shown in this picture, but functions are the first row in the table above.

  Associated with each function is a set of ranges. GPIB codes for each range are on the left most column, and you can see what they are in the other columns.

  To manage the functions of measure and the beach in this driver I have, I'll use 3 sub.vis:

  The first sub.vi is very simple, consisting of a ring of unique menu, a number to string converter, then a concactenate string, shown in the first attachment. It sends the command of the unit function.

  The third sub.vi is also quite simple, it sends the range control to the device.  This is the sub.vi between the two that I need help.

  What I want is to have a single control of the range , in the form of a ring of menu, and the 2nd sub.vi reformatted this menu ring. So what I need is to use a property node to set the line items in the ring menu to match with items included in the 6 columns above, so that if the function is chosen to be volts DC, the menu range ring will show 3mV 10mV, 30mV, 100mV, etc etc, but if the function is chosen to be alternating current the menu range ring show 3uA, 30uA, 300uA, etc etc.

  The other tricky part of this is that the voltage and the current functions of the AC pass range controls (see how there is no range associated with orders R2, R4, R6, etc.).

  That I'll probably be able to come up with something clever to treat (as simply double the value coming out of the ring and incrementing it with a + 1 on these functions to make them all odd), but for now I need help in the form line items in the menu ring.

  Attachment 2 was my first attempt to simply edit the line items in the menu ring.  Unfortunately the way it is put in place, he crams this whole string them in 1st command line, rather than separate.  I don't know how to change one of the elements of the past that 1st menu ring.

  Hope I explained quite well, make me know if I need to be clearer.

  You use the wrong property.  The property to use is 'Strings' and the entry is an array of strings.

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  Thanks for any help,

  Joe

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  Hello

  I was looking for a way to use a waveform graph, added the ability to set the width of the display of axis are all allowing a development of the chart track data, a little.  It is because the self-centering of the graph feature is choppy and does not allow users to zoom in or zoom out on the ground (which my colleagues have asked).

  It's basically my current solution posted here because I think that I finally got a right, but also because I know that you guys tell me: ten ways to do it better.  :%^)

  Note that the data here are slow; I think it would be really embarrassing if we looked at quickly changing data, although you could probably "Collect" more data and on average it all in the same way, to set the center of the axis y of the graph.

  

  The front panel; I put in place the three graphs in a tab control.  (Of course, there are no signals on the data acquisition module, when I did; but at least zero focuses on auto, and the range control works).

  

  I guess I'm especially looking for your comments and I was wondering if I missed an obvious way to simplify this process.

  Thank you

  Danielle

  Hey Danielle,

  Given that it is a long-term test, are you interested displays all the data of your test or only the most recent game? The waveform table allows to memorize and display historical information because it has a buffer associated with it. From your code, it seems that this collector is just used to store information so that you can average the last few data points. The only thing I see standing in your way of simply with an average of your data is that it seems that you display two signals on the graph. So which signal you want to be centered? If you have a signal you want to reach on average to get the center of your chart, you may son of this signal in a convert from Dynamic Data VI express. When you put everything first down, a configuration window appears. You can then select ' 1 D array of scalars"as the type to convert. The output of this VI will then be an array of data points. You can then use the VI means to find the way to this table 1 d.

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  Hello

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  When I create the graph XY scatter with these columns, the y-axis are mapping correctly, but axis x are not. Values of x-axis does not range from 0:00 to 23:59, but leave 08:05 on the left at 0:15 on the right. The values 0 and 08:05:15 not yet listed in my Chronicle of the TIME.

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  I find it very very slow.

  I like to browse clips in the timeline.  Just wheeled aligned segments I want and rock out to them until the next 'track' (arrow Alt Com upstairs).  X'cuse, I know that we have more titles... but up out of the main plot.  Once I get through a set of clips I delete all clips of scenario isn't the job offer and bring my selects down to the plot.  Or lasso just copy all the upper clips and bring them to another calendar (project).  And then start working with them.

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  Ben

  I would use the keyword Editor:

  

  Entry/exit points in the desired clips mark then in the browser.  With the R button, you can easily drag a range or even leaving the toll range WE.

  Because a Section of Clip wanted in the first box to know all the shortcuts do you is now press 1 for each additional clip range control.

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  Name it something like:

  

  Notice the icon is a flower looking thing which means that it is a Smart Collection.

  Double-click the Clip Wanted event and the filter window appears.

  Tell him to find only keywords then uncheck everything except wanted Clip Section.

  

  The browser displays only items that you previously selected by using the beaches or in & Out points with a keyword of wanted music video Section when 1 control was entered.

  Use Command-A to select all the clips and then press W to insert them into a cool timeline.

  This is how I could tackle the job.

  Al

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  Dear Sir

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  Hello

  You are using the wrong driver.

  Try

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  Curt