Reading 115vac 400 Hz
I work at 115vac 400 Hz power reading by using a PXI-4472.
I got it to work, but if the signal is lost the loop crashes.
How it stop doing that?
Someone at - it an alternative even if voltage reading example its 0 volt?
Got, it works.
It was my parameters of sampling that was wrong and how do I put my code together.
To reduce the 115vac I used resistance (ATTENUATOR 20:1).
OLD vi. code
New vi. code
Tags: NI Software
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Need help to measure the distortion on 115vac 400 Hz
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I want to read the percent distortion.
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The frequency is allways 400 Hz +/-1%.
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Hi Prashant,
Reading the FIFO is a method of querying, so if the number of elements specified to read are not available when the method is called, it queries the FPGA until they are. This causes the CPU to 100% usage. You can find more information on this subject and a way around this here.
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I think it would be good to read several points in a loop, and keep the loop less than 1000 Hz. I found in the past, have something to run faster than about 10ms tends to fall down when windows loses interest in the process. So yes, choose the slower you can get away with reading samples - for example to read every 10ms and read 20 samples every time. You should be able to configure your serial port in order to buffer the samples that I guess.
Also and the issue of windows - if you use a loop "timed" instead of a while loop, so you can force it to an integer value including the ms. You can also assign a dedicated processor and set the priority to 100, which means that it is less likely to elapse and decide to scan your hard drive for viruses or consult your account e-mail or what he does when he's bored with your program. Also it "' tells you if the loop has taken longer that planned to run - you can use this to help iron out bugs etc. - report and/or to the user if you missed a few samples.
http://zone.NI.com/reference/en-XX/help/371361H-01/Glang/timed_loop/
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You can try referring to this thread: reader XI - how to hide the default Navigation pane?
It is for reader XI, you can try the parameter given in the thread for reader DC registry.
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It is very rare that the removal of the existing video driver is necessary before installing a new video card. Most video card manufacturers do not understand such a suggestion with instructions to install a new video card.
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step 1. See if you can find a previous version of the bios of your motherboard and return date of the bios.
step 2. Find the latest version of the bios of your motherboard and update your bios.
Do not use a registered version of your current version.
To check the problem is the motherboard or operating system. find something like a live Ubuntu CD
http://www.Ubuntu.com/desktop/get-Ubuntu/download.
or
Make a Ultimate Boot CD for Windows
http://www.UBCD4Win.com/index.htm you are using windows xp or borrow a copy to UBD4WIN.
Both of the above run in memory (does not load on hard drive.
Both a bit slow, but are excellent tools.
Works like a normal computer.
If you can see you USB devices, magicjack, ETC. your BIOS is not corrupt or motherboard problem.
In normal windows if you see not the USB devices, magicjack, etc your windows install is corrupt.
Reload Windows of difficulty.
If you you do not see the magicjack, USB devices, ETC., your BIOS is corrupt motherboard or other problem.
Redo your BIOS as described above.
All other unwanted do not work , he was done !
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SEL$A8B7A3F4 11 - SEL$A8B7A3F4 / D@SEL$13 23 - SEL$A8B7A3F4 / OH@SEL$1 24 - SEL$A8B7A3F4 / O@SEL$13 25 - SEL$A8B7A3F4 / O@SEL$13 26 - SEL$13512960 / DF@SEL$13 27 - SEL$13512960 28 - SEL$13512960 / DF1@SEL$14 29 - SEL$13512960 / DF1@SEL$14 30 - SEL$A8B7A3F4 / H7@SEL$2 31 - SEL$A8B7A3F4 / H7@SEL$2 32 - SEL$A8B7A3F4 / DS@SEL$9 33 - SEL$A8B7A3F4 / RST@SEL$11 34 - SEL$A8B7A3F4 / ITT@SEL$3 35 - SEL$A8B7A3F4 / ST@SEL$5 36 - SEL$A8B7A3F4 / PT@SEL$7 Outline Data ------------- /*+ BEGIN_OUTLINE_DATA IGNORE_OPTIM_EMBEDDED_HINTS OPTIMIZER_FEATURES_ENABLE('11.2.0.3') DB_VERSION('11.2.0.3') OPT_PARAM('optimizer_index_cost_adj' 20) ALL_ROWS OUTLINE_LEAF(@"SEL$13512960") PUSH_PRED(@"SEL$A8B7A3F4" "DF"@"SEL$13" 11) OUTLINE_LEAF(@"SEL$A8B7A3F4") ELIMINATE_JOIN(@"SEL$2D47CDEA" "DTT"@"SEL$13") OUTLINE(@"SEL$14") OUTLINE(@"SEL$A8B7A3F4") ELIMINATE_JOIN(@"SEL$2D47CDEA" "DTT"@"SEL$13") OUTLINE(@"SEL$2D47CDEA") MERGE(@"SEL$3FAACB6D") OUTLINE(@"SEL$15") OUTLINE(@"SEL$3FAACB6D") MERGE(@"SEL$11") MERGE(@"SEL$A1A6E401") OUTLINE(@"SEL$12") OUTLINE(@"SEL$11") OUTLINE(@"SEL$A1A6E401") MERGE(@"SEL$9") MERGE(@"SEL$BFB1842A") OUTLINE(@"SEL$10") OUTLINE(@"SEL$9") OUTLINE(@"SEL$BFB1842A") MERGE(@"SEL$7") MERGE(@"SEL$EEDE2B8C") OUTLINE(@"SEL$8") OUTLINE(@"SEL$7") OUTLINE(@"SEL$EEDE2B8C") MERGE(@"SEL$5") MERGE(@"SEL$A6B38458") OUTLINE(@"SEL$6") OUTLINE(@"SEL$5") OUTLINE(@"SEL$A6B38458") MERGE(@"SEL$171BE69E") MERGE(@"SEL$3") OUTLINE(@"SEL$4") OUTLINE(@"SEL$171BE69E") MERGE(@"SEL$AF02BF1E") OUTLINE(@"SEL$3") OUTLINE(@"SEL$2") OUTLINE(@"SEL$AF02BF1E") MERGE(@"SEL$13") OUTLINE(@"SEL$1") OUTLINE(@"SEL$13") FULL(@"SEL$A8B7A3F4" "OH"@"SEL$1") INDEX(@"SEL$A8B7A3F4" "O"@"SEL$13" ("OCRN"."ORG_PK" "OCRN"."DSCLR_DSCLB_FL" "OCRN"."DSCLR_RPTBL_FL")) BITMAP_TREE(@"SEL$A8B7A3F4" "D"@"SEL$13" AND(OR(1 1 ("DSCLR"."FORM_TYPE_CD") 2 ("DSCLR"."FORM_TYPE_CD")) ("DSCLR"."DSCLR_TYPE_CD"))) NO_ACCESS(@"SEL$A8B7A3F4" "DF"@"SEL$13") INDEX(@"SEL$A8B7A3F4" "H7"@"SEL$2" ("H760_RGLTY_ACTN_DSCLR"."FLNG_PK" "H760_RGLTY_ACTN_DSCLR"."DSCLR_PK" "H760_RGLTY_ACTN_DSCLR"."REC_SEQ_NB")) FULL(@"SEL$A8B7A3F4" "DS"@"SEL$9") FULL(@"SEL$A8B7A3F4" "RST"@"SEL$11") FULL(@"SEL$A8B7A3F4" "ITT"@"SEL$3") FULL(@"SEL$A8B7A3F4" "ST"@"SEL$5") FULL(@"SEL$A8B7A3F4" "PT"@"SEL$7") LEADING(@"SEL$A8B7A3F4" "OH"@"SEL$1" "O"@"SEL$13" "D"@"SEL$13" "DF"@"SEL$13" "H7"@"SEL$2" "DS"@"SEL$9" "RST"@"SEL$11" "ITT"@"SEL$3" "ST"@"SEL$5" "PT"@"SEL$7") USE_NL(@"SEL$A8B7A3F4" "O"@"SEL$13") NLJ_BATCHING(@"SEL$A8B7A3F4" "O"@"SEL$13") USE_HASH(@"SEL$A8B7A3F4" "D"@"SEL$13") USE_NL(@"SEL$A8B7A3F4" "DF"@"SEL$13") USE_NL(@"SEL$A8B7A3F4" "H7"@"SEL$2") NLJ_BATCHING(@"SEL$A8B7A3F4" "H7"@"SEL$2") USE_HASH(@"SEL$A8B7A3F4" "DS"@"SEL$9") USE_HASH(@"SEL$A8B7A3F4" "RST"@"SEL$11") USE_HASH(@"SEL$A8B7A3F4" "ITT"@"SEL$3") USE_HASH(@"SEL$A8B7A3F4" "ST"@"SEL$5") USE_HASH(@"SEL$A8B7A3F4" "PT"@"SEL$7") SWAP_JOIN_INPUTS(@"SEL$A8B7A3F4" "D"@"SEL$13") INDEX_RS_ASC(@"SEL$13512960" "DF1"@"SEL$14" ("DSCLR_FLNG"."DSCLR_PK" "DSCLR_FLNG"."BLLBL_FL")) END_OUTLINE_DATA */This plan gives you an idea of why your initial synchronization has been long - most of your readings are one-piece readings and you have read 53 724 blocks. If you estimate 1 centisecond by read (which could be on a reasonable charge system) then it is 537 seconds. to 5 milliseconds per read, it's still 268 seconds or 4 minutes and 30 seconds.
A quick break down of some (the worst case) potential time - only you can say whether or not some of these readings will be always/often/never being cached in the file or at the SAN level.
Line 11 - physical reads 6 400 done - it's a tree bitmap then the readings are in the order of physical table with no. rereads. Call 5ms by read-online 32 seconds. L
| * 11 | TABLE ACCESS BY INDEX ROWID | DSCLR | 1. 5079. 158K | 533 (1) | 00:00:08 | 91395 | 00:00:01.27 | 6460. 6400 | | | |
The hash join takes us from 6 400 to 11 788 because it joins, lines 21 to 25 (nested loop) in which most of the work is the random access table with some automatic caching: 26 seconds. Do a search here rather than indexed 22 000 access? Which would be faster, which would charge less.
| * 25. TABLE ACCESS BY INDEX ROWID | OCRN | 22050. 1. 21. 1 (0) | 00:00:01 | 21059 | 00:01:04.74 | 15634 | 5280. | | |
Three nested loops that introduce more readings:
11788 9-> 26386:14 600 of the predicate view pushed which some lies but a very large index and a table of random access 73 seconds
8 26386-> 33783:7 400 index line 30 - big clue about 37 seconds Access hides
33783 7-> 53691:19 900 31 table access - large table line, not much caching, 100 seconds.
In each case, you can ask if an analysis would take less time than all of these random reads.
NOTE - all I'm pointing our here where you potentially use a lot of time so that you can ask whether or not you should do little of the query in this way, or if there is an alternative, or if the work you're doing is absolutely necessary. If you want to optimize the query you should consider the intent of the query and think your way through a reasonable join order to see if you can imagine an effective way to get the same data. I have written a few articles and presentation on an approach that begins by drawing - here is a link to an article I wrote for a group of SQL Server: https://www.simple-talk.com/sql/performance/designing-efficient-sql-a-visual-approach/
and a video I did with Kyle Hailey, while he was working for Embarcadero:Tune in for the ultimate SQL Tune-off | Landing pages
Concerning
Jonathan Lewis
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Graphic Illustrator the number of digits
Hello.
I have this graphic created in Illustrator CS6. As you can see on the lower part of the graph there 2 digits after the decimal point, however, I need 3. I selected 3. I need that extra zero at the end so it reads - 0.400, - 0.350, etc.. How do I get there?
With just the selected chart (not with data window open), you should get the following window
Here it is before
and that's after applying a suffix
You will have to change for each graph you do.
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Hello
After I correctly installed SuSe Linux 9.3 Pro on my desktop for a long time, I thought it would be good to give my laptop (Satellite 1800-400, CD drive is TEAC CD-224th-BA) a helping hand, by replacing with the same Linux Win2000, as mentioned above.
After a few additional copies of my Linux CD, I put a CD in my laptop and try to start it, but the computer freezes completely when I select the CD drive as the boot source. When I insert the CD in the drive while Win2K it does not freeze, but simply don't recognize.
The problem seems to be related to the material, since the reader seems to be impossible to read the CD at all, it does not create noise normal spin only a spin-up and then turns again to the bottom, and repeat a few times.
Everyone recognizes this problem and have a solution for this? I have already tested the CD on 2 other computers (desktop), no problem. Also, I have flashed the BIOS to the latest version, no change.
Hello
I think that as a first step, you should try some other CD in Windows and then use a bootable CD to see if the CD player has a problem in general or only with this CD.
Another thing: Linux is not supported by Toshiba, it will be difficult to find the drivers.
Good bye
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XPS 400 can not read a disk of 64-Bit Windows 10
I have a XPS 400 desktop computer that currently runs the 32-bit version of the operating system Windows 10 Insider Preview. In control panel - system, it is said that my XPS 400 has a "32-bit operating system, x 64 processor system" but when I put a new Windows 10 64-bit in the CD player and have it start and wait until he asks me to press any button in the BIOS it loads the logo and after a while the CD Player stops just and nothing beyond that happens. In the BIOS I tried to make F12 - boot to SATA drive but when I do try to read and then it just starts as he normally does, ignoring completely the disc. How can I have my XPS 400 read and install 10 64 - bit disk windows? Or y at - it another way, I could have run 10 64-bit Windows?
64 bit versions of windows 8.1 and 10 require more than NX to work. Another question, I found with of MANY older valleys, it's that the area code is not on the DVD. What causes some localized versions of DVD not working but CD XP works because there is no CD region code. In the case of the XPS400 you have need a pentium D 900 series CPU Pressler and the latest version of the bios. 915 to 960 will work as long as you have the copper heat sink. XPS 400/Dimension 9150 does not support the newer processors like the Intel Core 2 duo processor. There is really no point to the 64-bit version of windows on a XPS 400 due to limitations of the system ram. Commercial versions of windows 8.1 family or Pro come with support 32-bit and 64-bit so this isn't a problem.
Dell Dimension system BIOS A07 see details
XP051A07. EXE Windows/DOS (514 KB)
The Pressler 900 vs Smithfield 800 series series can do LAHF and SAHF as well as CMPExchange16 which means that it works very well if you have a Pentium 900 series D. This means that you can run 64-bit windows 7, 8 or 10 very well. RAM can be used Max will always be 3.25 GB regardless of cpu or os to 64-bit or not. There is a limit of chipset. The Precision 380 is better than the XPS400 due to support new chipsets and 8 GB of ram.
I got my 8.1 upgrade pro at the time where it was $ 38. If they want to they should buy immediately because there won't be any in the future.
WINDOWS 8.0 is depricated and 8.1 framed Purple House and blue box 8.1 pro are available throughout the retail options.
After July 31, 2015 8.x can be gone for always as well be replaced by Windows 10.
Pentium D 915 are very cheap as copper heat sink. The license of ram and windows are expensive parts. You update the bios to the last can change the CPU and replace the thermal compound. The Dual core pentium D is an improvement.
http://www.eBay.com/Sch/i.html?_nkw=Pentium%20D%20915
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Camileo X 400 loss of video files
I have a new Camileo X 400 with a sandisk Ultra 64 GB 30 MB/s installed SDXC card.
On the two occasions that I recorded the video, about 45 minutes per video file, I played the videos on the LCD and checked, they are ok. Then, some time later, (after 30 minutes, another time 24hrs) I'm trying to play again and to get a message 'no file'... all video files are missing!
I removed the SD card and inserted into a PC. SD card verification shows that the folders (subfolders DCIM and 100Media) exist but are empty.I read the manuals and web forums, but I see no reason for that to happen.
If someone has encountered this?Thank you
Perhaps you have accidentally deleted from the SD card?
Have you also tried a different SD card? Could also be a malfunction.
Otherwise its not understandable for me how a file can be deleted from the SD card
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Desktop HP Pavilion - 400-434: graphics card question
I'm a big gamer, but as much as to identify what I can and cannot not play, I'm just all confused around starting from my graphics card. When I try to find information about it, I pretty much arrived empty. His name is "Intel(r) HD Graphics" and that is it... research all tend to have numbers after that, but is in fact everything he says from the Manager of drivers, dxdiag or in any other way, I tried to understand.
Also, I was wondering about the differences between this and the generic version from Intel's?
Finally, I was told that this PC is ideal for playing games for $400. Through my own research that it is a kind of sounding like it was fake, but I wanted to go ahead and ask the manufacturer.
@SpcOs, welcome to the forum.
Here is the Product Specifications page for the computer.
SpcOs wrote:
I'm a big gamer, but as much as to identify what I can and cannot not play, I'm just all confused around starting from my graphics card. The graphics card is integrated into the motherboard. From what I see, it does not appear that there is a slot for a video card on the motherboard.
When I try to find information about it, I pretty much arrived empty. His name is "Intel(r) HD Graphics" and that is it... research all tend to have numbers after that, but is in fact everything he says from the Manager of drivers, dxdiag or in any other way, I tried to understand. You should read all the specifications in the link I provided for the specifications of the product.
Also, I was wondering about the differences between this and the generic version from Intel's? It is very difficult to answer. HP has their motherboards manufactured according to their own specifications.
Finally, I was told that this PC is ideal for playing games for $400. Through my own research that it is a kind of sounding like it was fake, but I wanted to go ahead and ask the manufacturer. It is a forum for helping hand in hand. The only presence that HP has on this are Admins and Mods. Otherwise, none of us works for HP. However, it is not accurate to what said you. The computer is certainly not a gaming computer. I suggest looking for the system requirements for the games you want to play and comparing them with the specifications.
Please click on the button + Thumbs up if I helped you and click on accept as Solution If your problem is resolved.
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