With differential measurement noise problems

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• differential measurement with a 6030e

  If I have two signals and a desire to make a differential measure between the hot wires (not ground), how to set up the Board?  It's supposed to make 16 differential measures completed or 8 single. In the latter case, this means that the device can be configured to make 8 differential measurements of 16 inputs?

  Exo in the morning,

  Using a differential connection is certainly a good way of measuring an analogue of entry, as you already understand that divide you by two the number of your channels when using differential, but it will prevent any problems of grounding that can occur (for example ground loops).

  Knowledge according to article details the types of connection different http://zone.ni.com/devzone/cda/tut/p/id/3344 please refer to the "table 1: connection of the analogue input ' for more details on how to connect your circuit. I would recommend using the polarization resistance, but they are not vital for a differential connection.

  Please do not hesitate to contact me if you need more help

  Best regards

• Satellite A500: update BIOS V1.50 is fan noise problem reappears

  I have a Toshiba Satellite A500 with fan noise problem.
  It has been partially resolved the upgrade of BIOS from v1.20 to v1.30, according to this thread:
  http://forums.computers.Toshiba-Europe.com/forums/thread.jspa?threadID=46719&start=0&TSTART=0
  

  Yesterday I updated the BIOS v1.50, and the sound of the fan returned.
  I do not recommend this upgrade if you have had the problem of fan noise.
  

  I have downgrade BIOS v1.30 and fan noise problem is solved again.
  I know that people have problems to get the downgrade to BIOS, so I describe the process in this thread:
  http://forums.computers.Toshiba-Europe.com/forums/thread.jspa?threadID=50577&TSTART=0

  Thanks mate for sharing this with us

  But perhaps you could use the v1.5 BIOS and could reduce or reduce the activity of module cooling in Vista/Win7 power management settings.
  It would be interesting to check it out

  In any case thank you for this info

• scope of nor-5114 interfaced to 2576 OR multiplexter relay and a signal to test via Coax, noise problems

  Hello

  We use a system of connected steps and have questions about the best method to interface to our test design.

  DUT (Test Point [n])---> 6 ft coaxial cable---> 96pin--> NI 2576---> NI 5114 (map interface) connector

  Note1: the map interface 96pin and equipment, OR share the same floor plan.

  Note 2: We have tried with changing the setting scope NI5144 of 50 ohm and 1 M ohm but do not seem to see a difference on our potential noise problem.

  The questions are:

  (1) what is the best place to justify our coax cable shield, the side was FORCED (to the mass of Council) or on the side of 96 pins?

  (2) we currently have the shield connected on the side 96pin and it brings in some possible noise to our test had TO that point signals, we added a 100 ohm series resistor close Testpoint and it helps solve the problem, but it is not acceptable to have this resistance in the beam of cable by our client, and we try to find another option to solve this problem of potential noise.

  Any help and advice on this is appreciated.

  Kind regards

  Miguel

  Miguel,

  1.) as long as you do not adopt loops of Earth in your system, you should be fine to be implemented for the ground of coaxial cable. I didn't want to forget that it is important that your HAD is not referenced to the mass of power also because this may introduce ground loops in your system.

  2.) as for the culprit of the noise that it is the combination of the two specs you listed. Amplifiers in your DUT output are specified for less than 1/10 the capacitance of the coaxial cable. This is the origin of the noise that you see, because the op amp is unable to drive the capacitive load and causes instability of the amplifier.

  There are a few methods you can use to remedy this situation and here is a resource that describes some of these solutions.

• Clarification and Confirmation on the practical Implications of common Mode on differential measures voltage

  Hello people,

  I've read several documents on the site OR about the premium over common measures of mode and I think I understand, but I'm looking for confirmation through two examples (please).

  Both examples assume a data acquisition card OR with +/-10V inputs and a maximum operating voltage of + / 11V (e.g. PCI-6052 with programmable gain 0.5).

  Example 1: Suppose a DC voltage with two resistors divider and a differential input on the daq card configuration.  First resistance = 4 Ohms connected to 100VDC, second resistance = 96 - grounded (0) Ohms.  This results in a decline of 4VDC to the terminals of the first resistance.  However, I believe that the differential voltage of 4VDC may be connected directly to the daq card because the absolute voltage (i.e. common mode?) is in fact 96VDC to 100VDC which is outside the "working range' of + / 11V for the card.  This conclusion is correct?

  Example 2: Suppose a differential measure between two AC signals and a differential input on the daq card configuration.  First report = 25v@0deg, second signal = 10v@180deg.  Some documents on the Web site of NOR, I gathered that the common mode voltage is the average of the vector representation of the input signals.  In this case, it would be (25v@0deg + 10v@180deg) / 2 = 7.5v@0deg.  I think that this signal can be directly connected to the daq card because one of the signals (25v@0deg) is outside the range of the card work (even if the result "means vectors" is within the scope of the map daq.  This conclusion is correct?

  Thanks in advance for any help,

  chassan

  Chassan,

  You're right both of your examples. Is the best way to look at that is that even if you take a measure differential the maximum voltage you can submit a single channel to the + / 11V to the 6052E. Hope this clears things up a little bit.

• Balanced circuit differential measurement

  I remember back to Labview 5 national had a great discussion tutorial white paper or knowledge base on how to understand the values of resistance when you perform a measurement of differential circuit.  I have a PXI-6230.  I can't find that anywhere now.  Can someone point me to a discussion of the decent webpage on the calculation of the resisitors to differential measures?

  Thank you... Clint

  Hello

  Please visit this link under the title "floating (nonreferenced) sources of measure."

  Wiring and considerations of noise for analog signals

  concerning

• Cc of Photoshop [began to shoot pictures of my wines and place them with grain or noise above]

  my current photoshoo began to shoot pictures of my wines and place them with grain or noise on top. I tried to solve this problem without adobe success Ive deleted the program and downloaded without success on the issue of fixing.

  Make sure that Cache levels are set at least 4 under preferences > Performance.

• I have a partitura with 18 instruments. Problem is that only 16 of the sheed. How can I vertically down the music?

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• Charger Port with HP Slate 7 problems

  I bought the 7 Slate with Beats Audio May 19, 2014. I use the device for work and have video and photos stored on it. Last night the device was low on battery so I plugged in the charger and went on to have a conversation in an e-mail program. And without warning. the unit turned off and only would be cooler. I checked the charger on another device that takes the mini-usb, and it works fine. Use another charger and also directly from my office. Nothing. So, this morning, I get the question and found this forum.  Not very encouraging to see so many comments about it.

  This device is less than a month, and I got him with a lot of tenderness, never fell, only not negligent on the load, or the cord. Yet here I am without my camera and unable to use for my meetings. Cannot get my sync applications, such as e-mail, storage, ect.

  So I called HP Support at 1-800-474-6836 and reached (Ben), me who gave me the standard excuses, transferred to a supervisor (Lexi), who created the wait to be contacted by a case manager within 48 hours. I was told that this person, once they contact me, will offer the best solution to solve the problem and return the unit to me or replace it. I was given a case number and am waiting for the call.  It occurs to me that if there is that a lot of problems with the charger port, that the company should already obtained before this problem and had a dedicated support to maintain the retention. My time is precious, like everyone else! I understand that my product is under warranty, and there is a process to resolve these issues. But when these factories will understand that it is more than an inconvenience when they design and sell defective devices? My Home Office everything is lined with HP hardware. My only loyalty should be of significant value for them.

  So I am writing this message to maintain continuity with this community, and HP doing to address this issue. Make sure what I'm going to share the results, whether good or bad. And as a former journalist, who does not hesitate to produce a video describing this experience, knowing very well how to avoid libel and defamatory statements.

  Technology companies have made the fortune of products driven by the needs of consumers and of course the almighty dollar. But seems that has more NO integrity in the prevention of these problems don't occur in the first place. And once they do, consumers are reduced to a minimum, having to go through the hoops to just to be able to use a product they paid for. Prove me wrong! You want to be a leader in the industry? Show me things beyond to satisfy your base.

  I will update this issue as soon as I have something else to the case.

  Thus, an update!

  After a few messages for me that my information was sent to the front. I got a call from (M Miles) Corporate Tuesday afternoon. (Same day)  And after a long discussion on my frustration, both with regard to the problem happen with any replacement.  I agreed to let them replace the device with the slate update 7 beats Special Edition. I sincerely believe that Miles was friendly to my problem and that he would do everything he could to resolve the issue and keep my business of loyalty.

  I was expressing my concern that anyone would after learning that he is a typical problem for the type of charger Port.  If there is a known issue, why use this type? Find a more stable tool, so save the company, but also consumers headaches of loss and replacement altogether.

  I'm looking forward to having a device back in my hands for the work I do. Not a toy for me! If there are other problems with replacement. I'll revisit this post and report it.

  With respect in Miles and anyone who touched the case... Thank you for your prompt and considerate back how to solve my problem. I can't wait to receive my new camera, with fingers crossed. I never wanted another product in addition to HP.

• I play world of warcraft and use a program called ventrilo to talk with other players. the problem I have is my game sounds can be heard

  I play world of warcraft and use a program called ventrilo to talk with other players. the problem I have is my game sounds can be heard.
  Vista makes my headphones 'speakers', so when I use a program called ventrilo to talk with other players in my game sounds are heard through ventrilo. My headset is a headset/microphone generic plug-and-play.

  When I run not WoW, I can hear my own voice through the headset speakers when I talk.

  I want my headphones to work so I can hear my friends talking and the sounds of the game, but I don't want the game sounds to be filtered on the server for voice chat

  Any help would be much appreciated. I asked the same question to Geek Squad and their response has been to try to charge me $49.99 + tax for one of their "agents" can remote in and fix it. Do not use them unless you have: P

  Hey CassiusVa,

  Welcome to the Microsoft Answers Forum!

  Since when are you facing the issue?

  Can I know the version of Ventrilo you use on your computer?

  It may be that World of Warcraft focuses on your audio hardware.  You can try to reduce the audio settings in WoW to see if this makes the use of Ventrilo better.  It may also be a driver problem.  I would check to make sure that you have the latest drivers for your audio device.

  Use the following steps to ensure that the audio drivers are up to date.

  1. connect to the Internet.

  2. click on start and enter the Device Manager in the start search field.

  3. click on the plus sign next to sound, video and game controllers.

  4. right click on the name of the sound material and select software update of the driver...

  5. click on search automatically for a driver updated and wait for Windows to update the driver software.

  6 Windows checks a remote Web site to see if the update of the driver software is available.

  * If an update is available, let Windows install the update.

  * If an update is not available, proceed to the next step.

  7. once the update is successfully installed, test the microphone.

  Please follow the steps below and check if you still have questions echo.

  Go into Ventrilo Setup and select mixer for the sound card, which will be the audio input (as determined by the "Input device" option) device. This will populate the Mux and line options. Normally it would take only a Mux. It is possible that you may have many options of the line. Go ahead and select "Microphone" or anything that is appropriate for the input line and then click OK.

  This should solve the problem.

  Please note that you select mixer, mux and line will allow the "Hardware Volume" slider This gives you the control hardware on the audio input signal and is the best way to control how strong you are. Setting the cursor to halfway better seems to work for most people, but it will be hardware and system load.

  You can also browse the links for more information on ventrilo and try to contact them if the problem persists.

  http://www.Ventrilo.com/FAQ.php

  http://www.Ventrilo.com/about.php

  http://www.Ventrilo.com/dlprod.php?id=1

  Let us know how it works.

  Kind regards
  Technical support of Microsoft-yama.
  Visit our Microsoft answers feedback Forum and let us know what you think.

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  Hello

  If you have installed Windows XP using Boot Camp in the book of Mac, you will need to contact the Apple Support.

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  It will be useful.

• I have problems getting into eprint because I had registered with aol. Registration problems.

  

  Not sure why registering with aol would cause problems when you try to create an ePrintCenter account. Have you ever had a Snapfish account? If that could be causing a conflict and you must register to ePrintCenter using the same email/password credentials that you used with Snapfish. If you are not sure, try logging on to Snapfish (Snapfish login) with the e-mail address you have tried with ePrintCenter and choose her you forgot your password. If she confirms that an e-mail has been sent to you with password reset instructions and then reset the password and uses it and the e-mail address to create your new account ePrintCenter.

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  Stone

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