What is the maximum voltage of the members of the PXI 4461 gain 20 dB?

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• Acquire more than 2047 samples with the PXI-4461 instaled in SMU-1073

  Hi all, I would ask you for help with the buffer limit.

  I intend to buy digitizer PXI-4461 and he instal in SMU-1073 chassis, namely control via MXI Express of Labview installed on a separate computer.

  What I need:

  -to acquire data of a single channel of AI, but at least a sequence of 20 kS by a acquire task, in some situations until 200kS by a task to acquire.

  The question:

  - I can gain more than 2047 samples in a single sequence, like 200kS, with the PXI-4461 installed in SMU-1073?

  Internal buffer of the PXI-4461 is reserved to 2047 samples. So I'm not sure if Labview can download remotely via MXI Express the data in the buffer of the PXI-4461 via MXI Express fast enough without any affection of the sampling program.

  -in the case, this PXI-4461 with SMU-1073 isn't the right combination, what chassis and a controller can do?

  Thanks much for the reply

  Jan

  It will work for you.

  The on-board buffer 2047-sample is used only as a backup if the flow of data to the PC host (via MXI Express in this case) is not fast enough... that it will be (explained below).  DAQmx transfers data from the buffer of the device to the host PC as fast as he can and, in ideal conditions, should not save the buffer 2047 much at all.

  Let's just say you get 110 MB/s (randomly from a MXI data sheet) flow on your MXI connection.  The 4461 has 2 analog inputs, which will be at 24 bits, we just round 32-bit in case it transfers the data in this way.

  4 bytes/sample (32 bit) x 200,000 s/s x 2 (channels) = 1.6 MB/s, which is well below the 110 MB/s, which will make the MXI link.

  clear as mud?

  Germano-

• The PXI-4461 connections and text based programming

  Hello

  I looking for a guide-schedule based on text for the PCI card, / AO PXI-4461 24 bit.  Currently, I am able to program it similar to the PXI-6259 but could not find a way to set it up as (differential, Pseudo-differentiel) in order to obtain the correct output impedance.

  Is there a hardware (user) for PXI-4461 guide?

  I use Visual c# to encode the PXI-4461.  How can I determine the location of the classes and the specific methods for the PXI-4461.

  Thank you.

  Anand

  
  

• Out of the pxi-4461 using SignalExpress

  I am trying to generate output using SignalExpress 2010 signals and a new card PXI-4461. To do this I am creating an analog sine wave at the stage of 'Create an analog Signal' and the output which, off AO0, using step "DAQmx generate". Then I use 'DAQmx acquire' to see what is actually output the signal being produced is not a sine wave, but some other distorted signal. I tested on the channels of entry with a function generator, and they seem to register all these signals well, so I wonder if there is something wrong with the channels of output in this map, or if I use the steps wrong for the output signal. Any contribution is appreciated.

  I got a telephone support on this and it is now resolved.

• "error-200621" trying to generate 20 kHz sinusoidal aboard the AO0: 1 of the PXI-4461

  Hello!

  I am getting a-200621 error trying to generate a sine wave of 20 kHz the signal output of a Council of PXI-4461 0 and 1. The signal is generated for a few seconds, then the error «on-board device memory overflow negative...» "happens! Why? and how can I avoid it?

  If I'm generating 1 kHz or using a single channel, all is well!

  I joined the vi as well as the error message.

  Here is the configuration of my system:

  LabVIEW 8.5

  PXI-1044 chassis with 14 locations and MXI-4 Council (optics) to communicate with the PC:

  -Connector 2: OR PXI-4461

  -Slot 3: OR PXI-4461

  -Slot 4: OR PXI 2561

  Computer:

  -Intel Core 2 Quad Q9400 2.66 GHz CPU

  -3.49 GB of Ram

  Thank you in advance.

  Frédéric

  Hi Peter,.

  The issue is resolved in fact to increase the number of samples that are written in the buffer!

  Thanks to you and Laurent!

  Frédéric

• Application errors of the RT with the PXI-4461 with Labview real-time 9.0.1, DAQmx 9.0.2

  HI -.

  I recently converted a PXI time system real OS (PXI-1042 q chassis, controller PXI-8187, DAQ, PXI-4461, DAQ, PXI-6259). I can write and run DAQmx applications in real time with the 6259 very well. Whenever I try to write a labview RT app to use the 4461, however, it will fail. Note that I can use two cards through MAX I tried switching card slots, just in case it was a problem. Both cards worked with labview, the PXI chassis was before Windows.

  Attached are pictures of the screw base demo I built to show the problem. Since I was a mistake (-200758) if I started from the raw strings, I tried to create a MAX task and use it. The task, but he complained of a buffer is too small. I explicitly put the buffer to work around this problem and still get the same error (-200608). I've also attached a screenshot of the software currently on the Max MAX RT PXI system is version 4.6.2 btw. (I installed the most/all this from DS1 Dev Suite 2010 version).

  Please let me know if I hurt something installed, versions if 4461 just don't play nice with the new BT or RT software, or if something is wrong. Thank you.

  Kregg

  The first error you see is (details in the help-> error explain in LV)

• Basic measures and the output impedance of the change with PXI-4461?

  Hello

  I am required to build an audio station with platform PXI OR test.

  It is my first experience with Renault. So I don't really know a lot...

  The PXI-4461 is a replacement of a former HP audio Analyzer. The measure is quite simple:

  1 generate fixed freq signal and measure AC RMS power

  2 measure THD (total distortion harmic) at frequency fixed

  3 measure SNR (signal to noise) at frequency fixed

  4 generate and measure DC signals

  5. change the output impedance of 50 ohms and 600 ohms.

  If I have a good feeling on which tasks 1 to 4 are feasible. I would like to ask if the task 5 (change the output impedance) problem possible?

  If this isn't a work around?

  As for tasks 1 to 4, it is possible with out doing 'a sound vibration' Toolkit?

  How helpful the Toolbox will be for the tasks listed above (humble).

  What should be my starting point learn to manage these measurement with Labview?

  Thanks in advance

  Hi Hazkel,

  Sound and Vibration toolkit will help a lot with steps 1 through 3.  This without the Toolbox would require a very high level of knowledge with LabVIEW and you will probably run again for complications.  In response to the fifth step, I tried to adapt the output impedance and am not able to do so programmtically.  However, you can still do this in hardware by adding a shunt resistor and potentially switch between if necessary impedances.  We have an article that deals with impedance matching and a circuit configuration to set the impedance if you are interested:

  Impedance and impedance matching

  http://www.NI.com/white-paper/3475/en/

  I recommend starting with examples that we have already built in LabVIEW to familiarize yourself with the concepts.  You will find them by clicking on help-> find examples-> search, then search for your application. Please let me know if you have any other questions.

  Thank you

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  Will be happy to help here, especially if he actually tried to apply in practice.

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  Best regards

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  I am trying to upgrade RAM on my PC HP ENVY dv7t-7300 CTO Quad Edition laptop. What is the maximum memory capacity for this model?

  Thank you!

  Gena.

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• What is the maximum capacity of the disk for Satellite L300-1EI?

  Hello

  I have a portable Sattelite L300 - 1EI Nodel PSLB8E - 05W013H2.
  Currently, I have a hard drive with a capacity of 120G.

  There a lot of bad sectors.
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  Thank you

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• Satellite 2400-103 - what is the maximum size of HARD drive?

  Hi all.
  New here.

  Nobody knows what the maximum hard disk size is for a Satellite 2400-103? This laptop has a 30GB HARD drive which is complete at the moment and I'm moving to a 160 GB unit.

  Used software - DiskCopy - clone Moose 30 GB of cloning to the new 160 GB drive. This creates a partition on the disk that is the same size as the original (about 28GB). If the new hard drive is installed on the laptop at this point, the laptop will be start OK. If I use a partition manager - Partition Magic - to resize the partition to the size of the new disc (about 150 GB) then the laptop does not start.

  Would it because there is a limit on the size of the hard disk supported by this laptop?
  If so, what is the limit?

  Thank you and best regards.

  Mike

  Hello!

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