F55 4 K & RAW data rate

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• The most effective way to log data and read simultaneously (DAQmx, PDM) high data rates

  Hello
   
  I want to acquire the data of several Modules cDAQ using several chassis to
  high data rates (100 k samples per second if possible). Let's say the measurement time is 10 minutes and we got a large number of channels (40 for example). The measured data is written to a PDM file. I guess, the memory or the HARD disk speed is the limits. For the user, there must be a possibility to view the selection of channels in a graph during the measurement.

  My question: what is the best and most effective way to save and read data at the same time?

  First of all, I use an architecture of producer-consumer and I don't want to write and display the data in the same loop. I expect two possibilities:

  [1] to use the 'DAQmx configure logging.vi' with the operation 'journal and read' to write the data to a PDM file. To display the data in a second loop, I would create a DVR samples documented and 'sent' the DVR for the second loop, where the data will be displayed in a graph (data value reference). This method has the disadvantage that the data of all channels is copied into memory. Correct me if I'm wrong.

  [2] use 'DAQmx configure logging.vi', but only with the "journal" operation to write the data to a PDM file. To view the selected data, I had read a number of samples of the TDMS file in the second loop (I'm currently writing the TDMS file). In this case, I have only one copy data from the selected channels (not), but there will be more HARD drive accesses necessary.

  What is the most effective and efficient solution in this case?

  Are there ways to connect and read data with high frequencies of sampling?

  Thank you for your help.

  You say that the measurement time is 10 minutes. If you have 40 channels and you enjoy all CHs at 100 kHz, it is quite a number of values.

  In this case, I always try to approach under the conditions of use. If a measure is only 10 minutes, I just connect all PDM data and create a graphic module that could be in the same loop of consumers where connect you the data. You can always work on the raw data files big offline afterwards, the extraction of all the information you need (have a look at the product called NI DIAdem: http://www.ni.com/diadem/)

  The main issue is that the user needs to see in the graph (or perhaps a chart can be useful too). Lets say that the graph is 1024 pixels wide. It makes no sense to show multiple data to 1024 points, Yes? Every second will produce you 100 data points k per channel. What is the useful information, which should see your username? It depends on the application. In similar cases, I usually use some kind of data reduction method: I use a moving average (Point by point Mean.VI for example) with a size of the interval of 100. This way you get 100 data points of 1000 per channel every second. If you feed your graph every second with these average values, it will be able to data points in 1024 of the store (as a default) by channel (curve), which is a little more than 10 minutes, so that the user will see the entire measurement.

  So it depends on the frequency at which you send data to the consumer. For example, collect you values 1024 by iteration of the producer and send it to the consumer. Here you can make a normal means calc or a bearing (according to your needs) and he draw a graphic. This way your chart will display only the values of the last 10 seconds...

  Once I programmed some kind of module where I use a chart and not a graph, and the user can specify the interval of the absolute timestamp that is traced. If the data size is larger than the size of the chart in pixels, the module performs an average calculation in order to reduce the number of data points. Of course, if you need to see the raw data, you can specify an interval that is small. It all depends on how you program zoom functions, etc... In my case I hade a rate of 1 Hz, so I just kept all data in RAM limiting the berries to keep 24 hours of data, so that technicians could monitor the system. In your case, given the enormous amount of data, only a file read/write approach can work, if you really need access to all of the RAW data on the fly. But I hope that the values of working capital means will be enough?

• Updated Lenovo Extractor cannot download driver Bluetooth Enhanced Data Rate?

  I tried several times with Lenovo Retriever update to download the Bluetooth with Enhanced Data rate software II for Windows 7 (32 bit, 64 bit), but it is said that he has failed every time. Other drivers are no problem, just this one and I need to install multiple machines as soon as possible.

  Can someone from the team of Lenovo correct this please?

  The downloadlink works but not through the application.

  Link: http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-76986

  File name: 7zwb01ww.exe

  Version: 6.4.0.1500

  @All,

  The team has fixed the value of the CRC and the XML document that is tested on a problem and TVUR has been resolved.

  JMT

• Saving raw data with PCI-6259

  I think registration of raw data because the resolution max of 16-bit card and DAQmx Read gives me a 64-bit (converted to 32-bit) value. It's the waste of hard drive space.

  However, I couldn't find any information on the format of the raw data of this card. If it is interlaced?

  If you use raw data from the function of reading DAQmx version you get an array of 16-bit data (signed or unsigned (you have your choice) that's exactly what comes A/d.) To convert the data in engineering units, you also have to record the value of the scale you can do the conversion yourself.

  If you read several channels, the first element is the channel 1, the second is channel 2, the third is channel 3 and so on.

  Mike...

• Raw data to a USB printer

  How can I send the RAW DATA to a USB printer?

  I found a bunch of programs and sharper than what's to do that. How can I do it using LabView?

  The net don't need to have the VISA or any other software program just the raw data, and that's it.

  Thanks for your help

  Resolved:

  http://forums.NI.com/NI/board/message?board.ID=170&message.ID=439160#M439160

• Get the raw data to map its (SDK)

  I did a search on sound cards and many forums have been useful.  I have just a few quick questions.

  I have a card his (CardDeluxe http://www.digitalaudio.com/) connected to the computer through a PCI.  My goal is to get the raw data from the card and plug and it blow in analytics in CVI.  I don't know how to "talk" to my sound card.

  Of course, my main question is above, but to the refine some concerns...

  I guess I need the SDK libraries for that.  For this, I just need to install the MSN help libraries?

  Is this possible in the Basic Version, or if the full Package of CVI is necessary?

  I have not done things well at low altitude, but it looks like getting a wav file is necessary.  I can't use anything outside of the applications I want to eventually create a program automatically record and play at a time (sync) précis.

  Thanks in advance.

  This site is what I was looking for.  The zip file contains an exe as file c source code.

  http://paulhoule.com/phsrec/index.php

  Edit:

  There is also some info here - http://forums.ni.com/t5/LabWindows-CVI/wav/m-p/235344

• (Note) - report - Bluetooth with Enhanced Data rate software II for Windows 7 wipe main drive

  All,

  It was reported that when the upgrade of the Bluetooth with Enhanced Data rate software II for Windows 7 to version 6.4.0.1700 is originally a wipe on the OS main drive (usually C:\)

  Version:	6.4.0.1700
  Release date:	16/05/2011

  Here are the units that uses this version of the driver.

  Support models     ThinkPad L420, L421
                     ThinkPad L520
                     ThinkPad T420, T420i, T420s, T420si
                     ThinkPad T520, T520i
                     Thinkpad W520
             ThinkPad X1
                     ThinkPad X220, X220i, X220 Tablet, X220i Tablet
                     ThinkPad Edge E220s
                     ThinkPad Edge E420, E420s
                     ThinkPad Edge E520
  

  Has been raised to engineering and the team is currently working on this topic.

  Please do not update the Bluetooth driver until further notice *.

  We are in a process to pull the driver from the Support Site and ThinkVantage System Update

  Main thread here

  JMT

  
  

• Looking for guidelines SNR for upper 802.11n (150 Mbps and 300Mbps) of data rates

  Is anyone aware of any directive of Cisco and/or observations on the ground for 20 Mhz (single channel) 150Mbps 802.11n 40 Mhz (dual channel) 300Mbps deployments and deployments?  If they vary also freq band. (2.4 or 5.0 - does not intend to make 40 Mhz to 2.4 Ghz).

  Also, if anyone is aware of any 802.11n design guidelines / planning guides (preferably Cisco) with some rough points square guidelines for generic, Interior carpet environment office (similar to the PA 1 through 10,000 feet square for the data base/light and 1 PA by 3,000 feet square for VoWLAN), but for the 802.11n which would be appreciated.

  Is enough to remind me about the need to conduct a site survey - and I realize that these figures will stretch based on the environment - looking for instructions and values of the signal, if published.

  In addition, it is understood that different customers may have different sensitivity - no need to go either

  Especially try to find some guidelines rough values published for planning purposes.

  Thank you

  John

  Not sure if you are still looking, but it is the reference in the CUWSS quick reference Guide.

  Conditions of accreditations RSSI/SNR
  Data rate 20\40 MHz 2.4 GHz Min RSSI 2.4 GHz Min SNR 5 GHz Min RSSI 5 GHz Min SNR 14.4\30 -82 11 -79 14 28.9\60 -79 14 -76 17 43.3\90 -77 16 -74 19 57.8\120 -74 19 -71 22 86.7\180 -70 23 -67 26 115.6\240 -66 27 -63 30 130\270 -65 28 -62 31 144.4\300 -64 29 -61 32

• Disabling the data rates inherited b

  Looking for advice on how to properly disable the low flow rates in our environment of 2.4 GHz.  We would like to disable all data rates b and support only 12 Mbps and more.  I understand I must set my rate of data WLC as well:

  1 Mbps through 11 Mbps - disabled

  12 Mbps - mandatory

  18 Mbit/s through 54 Mbps - supported

  Is this the right way to support customers g and effectively exclude customers b and all associated General fresh b?  I look forward to any comments!

  Thank you

  Anthony

  Yes, who's going to do well.

  HTH,
  Steve

  ------------------------------------------------------------------------------------------------
  Please don't forget to rate helpful messages and mark the questions answers

• RVS4000 - how to achieve a maximum data rate

  I have little experience in the configuration of a router.  Also, I don't know what the maximum data rate may be for this router.

  Right now, the router is limiting my internet speed compared to what the cable modem can provide...

  So far, I know that when I plug my computer directly to the output of the Modem cable Motorola and run a speed Test on my Charter cable connection, the test shows ~ 50 MB/s for downloads and ~ 5 Mbps for downloads.  It would be great, but I have several computers and need to use a router/gateway to feed my local network.  When I insert the RVS4000 router between the modem and the computer, the speed Test result to ~ 16 Mbps for downloads and stay ~ 5 Mbps for downloads.  During this test, there is no other computer online through the router.  16 Mbps is not lousy, I would like to realize the full value... is it possible?

  The RVS4000 unit is capable of 50 Mbit/s to 30 Mbps?  How to configure the router to reach the maximum available download speed?

  There is a Setup page of the router that has parameters right now set at 50000 Kbps Upload and 60000 Kbps by downloading; for me, this means that the router is capable of such speeds.

  Anyone, please give me a hint on what step to take next to solve this problem, if possible...

  Thank you

  Hi James, you can disable IP addresses and you will probably see what you expect.

  -Tom
  Please evaluate the useful messages

• 802 11b data rates.

  Hmmmm, I have question what a quick Internet search has failed.

  We know 802. 11 b data rates are 1 Mbps, 2 Mbps, 5.5 Mbps and 11 Mbps. My question is, how can we get these numbers?

  The 802. 11 b frequency spectrum signal is sent via, is 22 Mhz wide. In other words, the 22 million oscillations per second.

  Lets take 1 MB/s first. It uses barker coding, with 11-bit sent (or chip) equal to the actual data bit 1. As a result, 22 million (oscillations) each result in a forest (a 1 or a 0). Of these 22 million bits, we know that a chip (11 bits) equals the actual data bit 1. As a result, 22 million/11 = 2 million or 2Mbps. If this shouldn't be 1 MB/s? The 2mbps is a unique swing is equivalent to two bits, doubling the 1mbps to 2 Mbps. Im trying to work on how these 802. 11 b rates are calculated. Math below is probably correlated to somehow how rates are calculated?

  22 000 000 (22 Mhz) / 22 = 1 MB/s

  22 000 000 (22 Mhz) / 11 = 2 Mbps

  22 000 000 (22 Mhz) / 4 = 5.5 Mbps

  22 000 000 (22 Mhz) / 2 = 11 Mbps

  Anyone?

  Dazzler

  Watching a trace of Spectrum Analyzer also lets you understand.

  If you look at a 802. 11B trace, you will see that it resembles a hill, a bump.

  Which means that the centre 11 Mhz are at max power. The other 11 Mhz border are not useful signal, but they are still unusable by others.

  22 Mhz is so the connection you "kill" when you will pass, but only the 11 mhz Center contain a useful signal.

  To remedy this, the 802.11 g brings OFDM and there are several substrings and material. This allows the signal look like "bart simpsons hair", which is very steep on the border, you use not all 20 Mhz then.

• Problem installing software of Bluetooth Enhanced Data Rate II (v6.2.1.3100)

  Hello

  Today, I have improved some Lenovo drivers, including the bios v1.20. When I was upgrading software Bluetooth Enhanced Data Rate II to the 6.2.1.3100, offered on the page version drivers for t400s, I got the following error, almost at the end (sorry, the OS is in Dutch): "there there was an error during the installation of the political party...» ». See below:

  

  After that he has automatically restored the update, however probably not completely, because now when I reboot with active BT I get the following error, also in Dutch: "the program can't start because btwhidcs, DLL is missing from your computer. "You may be able to solve this problem in re - install the program.

  

  My backup files, I've restored the previous version 5.2.1.2900 Setup file, but am also unable to re - install and make two mistakes now. I must have been able to install 5.2.1.2900 with the previous bios, because it was the version I checked before you run the 5.2.1.3100 update!

  How can I solve this (apart from doing a full system restore). I would not be able to install the new driver properly? If this is not the case, how can I restore BTtray.exe then.

  Thank you, Jan

  Looks like there's a problem install the Visual C++ 2005 redistributable. You can try to install these first manually by using the links below:

  x 86 version:

  http://www.Microsoft.com/downloads/en/details.aspx?FamilyId=200B2FD9-AE1A-4A14-984D-389C36F85647

  x 64 version:

  http://www.Microsoft.com/downloads/en/details.aspx?FamilyId=EB4EBE2D-33C0-4A47-9DD4-B9A6D7BD44DA

  Even if you are using Win 7 x 64 (assuming you are using Win7), according to me, you need the x 86 redistributable og version for this software. If you already have an earlier version of the redistributable installed, you might as well try to uninstall first and then reinstall Microsoft Download or try to install the BT software after uninstalling. So, you can try to uninstall the BT software and start again.

  If you already have version BT 6.2.1.1400 installed, you should ensure that you have a complete backup since this version had a serious bug when installing/uninstalling this version could wipe you HDD. I know that this is related to the 6.2.1.1400 only.

  -gan

• How to convert raw data from files (not CameraRaw) of the lot?

  Hello

  I have a number of files that are images of raw data, which means that each has a header of a certain length, containing some info readable on the dimensions height/width, the bit depth and then only the data on the color of each pixel.

  CameraRaw does not open them directly, but they are rather loaded in Photoshop with a dedicated loading menu options.

  I can open one by one after extension *.raw which apply to them and typing height, width, depth and size header in loading options menu that opens, but I would like to know how to batch convert them rather than having to do this process for each of them.

  Of unfortunately Photoshop batch processing does not seem to be able to their treatment on its own, I guess that's maybe because they do not have the usual software-readable RAW headers found in several treaties formats.

  Thank you

  Alfred

  You may be able to write a Photoshop script to do this.  Script can access your files from file systems.  For example, a Script could rename a file to Name.RAW.  Then open Name.RAW in Photoshop with the logon options.    However, I do not know for sure there and options open to the adobe open raw file object.  You need to do this, read the script.

• URGENT - Data rate "TOO HIGH FAILURE" - BUT this isn't the two videos, it takes 9 subtitles tracks! Help, please!

  I'm a standard definition DVD authoring using Encore CS6. I imported two videos high definition (1920 x 1080) (63 min and 4 min.) directly to a calendar. There are 9 subtitles.

  I have converted video high-def exactly like these while encoding several times with success. I use this custom setting: Codec: MPEG2 - quality: 5 - VBR 2 pass - Progressive - Min BR: 7.2 - target BR: 8, Max BR: 9 - 23.96 EN matches source. Due to the fact that I used this predetermined dozens of times, I don't think lowering the Min, the target or the Max BR is going to solve the problem of data failure rate.

  I am inclined to believe it's 9 subtitles after that review "Data rate too high failure" messages here.

  As ALWAYS, I'm on a deadline to customer.

  Okay, this preset has always worked in the past, but I would have thought you were pushing things with him.  Subtitles can be the proverbial drop of water!

  I had problems in the past with that high bit rates and also during the definition of quality to 5, instead of 4.  For example, I always use 4 quality and will never more than 7 for target BR.  Even with these settings, I had problems earlier this year with a chronology which contained a series of 20 JPEG images - there were always reluctant to the second jpeg, and I had to down to 6.5 before it was OK.

  Have you tried a lower BR?

• Import raw data PCM question

  I use AA3 for centuries now, but have never had a major problem, but this one has me stumped!

  Without going into too much detail, I needed to use the option "Import raw data" on a file recently and, as you can see, an option to import a file with the extension .mp3 is available to me.

  However, this option does not appear on the machine from a friend and no we have no idea as to why not! We use both a legal, proper, the program copy (IE not a 'cracking' or whatever it is), but when I have Windows 8.1, there only Windows 7.

  Which cannot be the only difference, surely?

  Can you shed some light on this issue?

  Thank you.

  

  Post edited by: Carl Waring

  It is an aberration that according to me. .MP3 should not appear in the list of file types Raw PCM. I have AA 3 installed on a Windows 7 computer too and there is no option under Raw PCM .mp3.

  In hearing, the types of files that appear in open and save drop-down lists sometimes be damaged if an audio file with an incorrect suffix name is manually typed in the name field.