Strange setup problems

I'm working out of a studio where I have no control over the parameters of some of the equipment I use. I'm having a problem editing material that was shot in the studio, but I can't quite put my finger on a solution.
I'll summarize my workflow and probably somebody can see where I'm doing it wrong:
We shoot half-hour programs in an analog studio, but recorded on a DVCPro deck. The deck is set to record setup at 0 (the other decks in the facility, which are used to feed three cable tv channels, are set to play out at 7.5).
After we shoot the shows, I capture them on my Mac for titling and timing. For name supers, I'm creating banners in Photoshop, and exporting them as png files. Whenever one of these supers is included in the video, the blacks seem to be crushed a little bit. The overall video output seems to stay at the correct level, but detail in the darkest areas of the image is destroyed.
I don't like this one bit, as you can imagine, but I am at a loss to determine a fix.
Thanks!
Elliott

What codec are you using in your timeline? What are your render settings? How are you placing the PNG over the footage? Have you tried it using a PhotoShop file? What about using LiveType instead?
Patrick

Similar Messages

Strange module problem, modules not found

Hi!
Not sure if thois is the correct area but anyway...
I have a really strange problem loading modules:
Sometimes when booting it can't find my modules, in most cases (but not all) I have done a unclean shutdown so fsck needs to run (but it have happened at other times as well).
And even if fsck pass without any problem I still have the same problem, even when trying to reboot a second time (clean shutdown).
The only fix is to re-install kernel26 (and hope I still have it in the cache).
Possibly related problem:
I can only manually load modules by giving the whole path.
Am I missign some setting?
Some other setup problem anyone can think of?
Any tip on what I need to check?
BR,
Mårten
Last edited by Maos (2009-01-18 18:57:25)

sudo pkgadd -d . SUNWcsu helped!

I need to upgrade my 10.5.1 os on my G4/1.25 (I'm having some audio-midi setup problems), but it's a machine that is not connected to the internet. Do I have any options? Thanks!

Friends,
I'm having some audio-midi setup problems on my G4/1.25/10.5.1 machine. I'm thinking that a routine OS upgrade might help. However, this machine is not connected to the internet. Are there any alternate methods for upgrading system software? Thanks in advance!

OK, what you should do is download the updates on another machine and burn them to a disc. Start at this link http://support.apple.com/downloads/#leopard for downloads and find, among other things, the 10.5.8 combo updater that works on PPC machines, plus security, QuickTime and other updates. Going from 10.5.1 to 10.5.8, there will probably be a bunch of things that you should install. Being off the internet with the machine, you can't have Software Update sort it out, so something might get missed, unfortunately.
My suggestion is this: if it looks like you might need a download, get it onto that disc.

Strange wifi problem on a brand-new MacBook Pro

Hey there, I'm new here. Desperation has got the better of me, and I hope I can get some advice.
So, last sunday I bought a brand new 13" MacBookPro with 2.8g i7 processor and 10.7.2 OS (I can't update to 10.7.4 because System Update tells me the download has been tampered with or corrupted after I waited 2 hours for it to finish, but I'm trying a direct download from the website). Here's the exact product: http://www.amazon.com/Apple-MacBook-MD314LL-13-3-Inch-VERSION/dp/B005CWIZ4O/ref= sr_1_5?ie=UTF8&qid=1340301247&sr=8-5&keywords=macbook+pro+13
Everything is all perfect except for a strange wifi problem. Note that the wifi does not turn-on or off, it doesn't disconnect after 'sleep', it doesn't get less speed, it doesn't constantly leave a preferred connection (once I chose my home wifi it always connects to it no problem). The wifi bar is always full. What is wrong is that the internet is kinda 'glitchy'. The best metaphor I can think of is that it's like a car that has to be pushed down the road before the engine can start. Please, bear with me because this is kinda hard to explain and I'm not good at tech lingos.
One of the symptoms is browsing can get really slow and inconsistent, almost as if the wifi gets turned off in the middle of browsing. For example: if I look something up on Google and then open 5 new tabs, probably only 2 or 3 of those tabs will eventually load while the other two will not get past the long 'http:.......google.....etc etc' address and will eventually show one of those 'error loading page because there's no Internet connection' notice. This happens a lot. Sometimes I have to refresh/retry loading a page a couple of times before it finally loads, then usually everything will get back to normal and I will be able to open multiple tabs with no problem, but in a couple of minutes I would try to open another site and the problem will start again.
So I tried to see how it does with downloading using iGetter. Fortunately I also have a Macbook (white-plastic casing one) and my brother has an old 2006 MacbookPro so I can compare. With those two older Apples iGetter starts receiving data in less than 8 seconds after I click Start, while my brand-new Macbook Pro can take up to 15-20 seconds, sometimes it doesn't even start at all and I have to re-click the start button. But once the download actually starts (on my new MacBook Pro), it downloads like normal, it doesn't stop and the speed is also as good as I can get. Strange huh? Hence, like a car that has to be pushed before the engine starts.
I also tried 'speed testing' from a website with all 3 laptops. On my old MacBook and my brother's MacBook pro, once I click 'begin test' it takes only a couple of seconds of 'ping' before the download/upload speed measurements start, but with my new MacBook Pro (just like with iGetter) it takes up to almost a minute before the measurements start, sometimes it won't start at all and I have to re-start the test.
Well, thanks for reading. And hope you can help me shed some light into this. Because it is really preventing me from really enjoying my new MacBook Pro. And if this is most likely a hardware problem, I'd better get back to the store and try to get it replace or something while it's only been 5 days. *cheers*

Hey guys.. Thanks for the replies. Unfortunately, I bought the MacBook in Indonesia where there are no such thing as an AppleCare. The only option is to leave the Apple product to one of the 'Authorized Apple care centre' and have whoever do whatever to it without guarantee of success. As for returning it and getting a brand new one, I also don't know if there is such a deal here, but that's actually a good idea, will try to go to the store tomorrow. Although, I'm worried that the problem might be with OSX Lion or something and getting a new one won't help.
mark75090, I've tried resetting the router when I first noticed te problem, didn't work though. I've checked my new MacBook's wi-fi (option+click wifi bar) and it says 'PHY Mode: 802.11g', so does my MacBook and the old MacBook Pro. I don't know what those mean though, and I don't know whether or not my router is an N., can you tell me more please.. I have tried with the other two turned off, and only the new MacBook using the wi-fi but the problem persists. I have also tried connecting directly to the router, but as I described, the problem is too subtle for me to notice the difference.
Also, if I create a brand new Wi-Fi connection in network preferences and connect to my router through the new Wi-Fi profile, the problem seems to be gone for an hour or so, then it always comes back though. I have also just finally installed 10.7.4, but it doesn't help either.

Setup problem, windows xp, firefox upgrade to 4 and asked to reboot but did not progress. keeps asking to restart even if I try to remove

setup problem, windows xp, firefox upgrade to 4 and asked to reboot but did not progress. keeps asking to restart even if I try to remove

Hi marsano,
Usually the only reason it will ask you to reboot is if there is a file that must be modified that the updater doesn't currently have access to. You should try running the Firefox program once as Administrator:
* Right-click the icon and choose ''Run as Administrator''
If that doesn't help then do a clean reinstall.
# Download a fresh copy of Firefox from the [http://www.mozilla.org/firefox/fx/ Mozilla download page] and save the file to the desktop.
# [[Uninstalling Firefox|Uninstall]] your current version of Firefox and remove the Firefox program folder before running the new installer.
# Run installer
Remember that you don't want to remove personal data when uninstalling. That way you'll still have your personal information.
Hopefully this helps!

Very Strange Internet Problems

I own a MacBook Pro 15.4 Inch that I purchased about a year and a half ago. I recently upgraded to Leopard and have all the latest updates. I am from the US, and when I am home my internet works fine. However, I am on travel to Seoul, South Korea right now and am having a very strange internet problem.
As far as I can tell, the URLs that I type in to my browser are, sparodially, not translated correctly into the webpages that they are supposed to represent. This problem is probably effective 75% of the time, and the rest of the time my internet works roughly correctly. For instance, when I enter http://www.google.com, instead of being taken to the Google homepage, I am taking to the homepage of Jammin Beats DJ Service, an obscure website about a company in northern Pennsylvania. The actual URL of this website is http://www.jamminbeats.com, but when my internet is malfunctioning, 'jamminbeats' is for all intensive purposes replaced by 'google' (that is, it applies not only to the main page, but to sub pages, so "http://www.google.com/weddings" takes you to "http://www.jamminbeats.com/weddings" and etc). For most other webpages, one of two things happens. Either I am taken to the correct page but it is displayed without any images or frames (just the html text and links), or I am taken to a blank page with the header "Under Construction", which I assume is the default for a page that doesn't exist. This is why it seems as though the URLs are simply being interpretted erroneously.
This problem occurs when connecting both to the wireless and the wired internet at my hotel, and it occurs on both Safari and Firefox, so it is not a connection-specific or browser-specific problem. It may be a problem with the hotel's internet, and as of yet I have not had a chance to test the computer at another location. However, a colleague using an IBM computer has had no problems, and I am currently on a Samsung machine in the business center of the hotel and it is working correctly as well. I have searched extensively online for a similar problem but have come up empty handed, and more than anything, I am confused about what might be causing this problem. The strangest thing is that a fraction of the time, the internet functions normally, but it is usually roughly 15 minutes out of every hour, and eventually I am inevitably taken back to Jammin Beats.
I am a computer science graduate but I still have no idea what would cause this problem. At first I thought it might be a hacker, but if it is, he or she has been at it consistently for 3 days now, and only seems to be targeting my computer. Any ideas or solutions would be greatly appreciated, as I have been forced to resort to the hotel's business center for checking email, doing work, etc. Thanks in advance.

I did consider that, as I was in Beijing last week and there are a number of censored sites. However, in Korea I have had problems with very basic sites like facebook, wall street journal, google, yahoo, Korean google, my hotel's webpage, etc. Further, I have successfully gotten all of these sites to load seemingly at random, and can access them without problems on other computers. The only disconnect seems to be between my MBP and the internet, not between Korean internet and the web. I have toyed around with the network settings, and although sometimes after switching from "Automatic" to a fixed connection I get some sites to work, it usually only lasts a short time and eventually the same sites stop working. I reset my cache regularly to make sure I'm not getting sent to cached sites, but this also doesn't help. Further, my Apple Mail, Skype and AIM accounts jump between being connected and disconnected randomly as well. Again, this is isolated to my own computer, which is why I'm so confused.

Strange email problem; it started only loading unread emails, but from 3 months ago. It is now loading new emails too, but no emails in the past month, read or unread. It's gmail, set up through the phone, I've restarted restored

Strange email problem; it started only loading unread emails, but from 3 months ago. It is now loading new emails too, but no emails in the past month, read or unread. It's gmail, set up through the phone, I've restarted restored and updated firmware, deleted the account, anything I could think of, but it's just not accurately downloading the most recent emails.

The answer is very simple: You were not the original owner of the phone. Target sold you a phone that had been returned. You can verify the date of the original sale here: Apple - Support - Check Your Service and Support Coverage. I suspect you will find that the warranty expiration date is not one year from the date that you bought it.

Simple VISA Setup Problem

Hi all,
I'm having issues working with VISA in LabVIEW. Previously, I've used Peek/Poke VIs (before they were VISA VIs) that allowed me to read and write directly to registers at a given Windows address. I have a new, custom PCI Express board that uses the same architecture that I've worked with previously only this time I'm trying to access the registers using VISA.
As this is my first time using VISA, I'm having some setup problems. Yesterday I got to a state where logically things should work but I still end up getting an error when I try to run a simple VISA Open command (see attached screenshot).
The initial problem I had was I was not able to acquire a VISA resource that opens a session to my PCIe board...it would simply not show up on the resource list. After reading around I discovered I needed to create a custom VISA driver for my board. Once I did that using the VISA Driver Wizard, the device showed up in my list (as seen in the screenshot). I wrote the simplest of all VIs where I simply open that VISA resource, however, the error seen in the screenshot is produced.
I'm pretty sure this is a simple setup issue, but does anyone know what I'm doing wrong?
Attachments:
Screenshot1.JPG ‏145 KB

Hi bonhomme,
I see you're having some issues using VISA. It sounds like you're new to VISA, so I wanted to pass along some information that we have availble on this software. This link gives good general information about VISA, and the related links are extremely helpful in finding specific issues.
Thank you for attaching your error. This is extremely helpful in debugging since we can actually see the numbers. There is another forumn that talks about these at this link and at this link.
Hope this helps you out!!
Lea D.
Applications Engineering
National Instruments

CDC setup problem

{noformat}Dear all,{noformat}{noformat}Trying to troubleshoot a CDC setup problem in ODI:{noformat}{noformat}I got an error when trying to "Start Journal" from the CDC source model (in Designer).{noformat}{noformat}Here is what I've done:{noformat}{noformat}1. grant the following role to the CDC source schema (user):{noformat}{noformat}DBA, execute on DBMS_CDC_PUBLISH, connect, resource, select_on_change_sets, create session, select_catalog_role, execute_catalog_role, create sequence{noformat}{noformat}2. in the CDC source model "Journalizing" tab, specify JKM 9i logminer (CDC source is on 9i) and specify "Automatic Configuration"{noformat}{noformat}3. add a subscriber "SUNOPSIS" to the source model -> Changed Data Capture (Operator successfully run){noformat}{noformat}4. "add to CDC" from source model -> Changed Data Capture{noformat}{noformat}5. "Start Journal" from source model -> Changed Data Capture (Operator run failed with the following errors in the "create Journal" step){noformat}{noformat}
30475 : 99999 : java.sql.BatchUpdateException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
30475 : 99999 : java.sql.SQLException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
java.sql.BatchUpdateException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
at oracle.jdbc.driver.DatabaseError.throwBatchUpdateException(DatabaseError.java:367)
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:9119)
at com.sunopsis.sql.SnpsQuery.executeBatch(SnpsQuery.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.execCollOrders(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTaskTrt(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSqlC.treatTaskTrt(SnpSessTaskSqlC.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTask(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessStep.treatSessStep(SnpSessStep.java)
at com.sunopsis.dwg.dbobj.SnpSession.treatSession(SnpSession.java)
{noformat}{noformat}Any idea?{noformat}{noformat} {noformat}{noformat}William Lam
{noformat}

Hi Cezar,
Thanks for following up. Below is from the description tab of the "Create Journal" steps:
LOADING:
select     FULL_TABLE_NAME     FULL_TABLE_NAME
from     CDCSRC.SNP_TMP_TABLE_LIST     TMP
where     TMP.FULL_TABLE_NAME = 'CDCSRC.DEPT'
and     not exists      (
          select     'X'
          from     CDCSRC.SNP_CDC_OBJECTS     OBJ,
               CDCSRC.SNP_CDC_SET_TABLE     TBL
          where     TBL.FULL_TABLE_NAME          = OBJ.FULL_TABLE_NAME
          and     TBL.FULL_TABLE_NAME          = TMP.FULL_TABLE_NAME
          and     TBL.CDC_SET_NAME          = 'CDCSRC.CDCSRC'
          and     OBJ.FULL_OBJECT_NAME     = 'CDCSRC.J$DEPT'
          and     OBJ.CDC_OBJECT_TYPE          = 'JRN_FULL_NAME'
DEFAULT:
BEGIN
     DBMS_LOGMNR_CDC_PUBLISH.CREATE_CHANGE_TABLE(
     owner          => 'CDCSRC',
     change_table_name     => 'J$DEPT',
     change_set_name     => 'SYNC_SET',
     source_schema     => 'CDCSRC',
     source_table     => 'DEPT',
     column_type_list     => 'DEPTNO NUMBER(2) ',
     capture_values     => 'new',
     rs_id          => 'n',
     row_id          => 'n',
     user_id          => 'n',
     timestamp          => 'y',
     object_id          => 'n',
     source_colmap     => 'n',
     target_colmap     => 'n',
     options_string     => ''
END;
The error message from the Execution Tab:
30475 : 99999 : java.sql.BatchUpdateException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
30475 : 99999 : java.sql.SQLException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
java.sql.BatchUpdateException: ORA-30475: feature not enabled:
ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 298
ORA-06512: at line 1
Once again, the setup details:
- CDC source is on Oracle 9i
- KM used is Oracle 9i LogMiner
- enabled archivelog in Oracle 9i
- installed logminer by running the 2 sqls as described in the earlier tread.
I need to meet a tight deadline for POC completion and I desparate need some help here.
Thanks and regards,
William

Strange shutdown problem

Hi,
Last night, I had a strange shutdown problem on my iMac G5 (revB, 20", 2.0 Gig), with 1 Gig RAM, running 10.4.4 with all updates. I had had the computer on most of the day, using it off and on. I shut it down, and left the room. When I came back about an hour later, the fans were running (not rapidly, just at the normal speed they run when the computer is running), but the screen was blank, and the "sleep" light was not on. The computer wouldn't respond to any moving the mouse or to keyboard input. I finally shut it down by holding the power button until the fans shut down. Upon restart, everything was normal, and after using it for a few minutes, I was able to shut it down normally. Has anyone else seen this sort of behavior, and is it normal ? Or am I about to have more problems.
Thanks in advance,
Dave Fritzinger
Honolulu, HI

Hi Dave,
By the sound of it your computer has "hung" during the shutdown process, but at a point in the process where the system's temperature control mechanisms were still operating (otherwise the fans would be running flat out). My guess in this case is that it was probably actually a finder crash.
Various things can prevent proper shutdown. Often USB or FW devices are to blame. USB adsl modems , some scanners and hubs and the occasional printer driver seem to be common causes. Software can be responsible too, though - background virus or drive checkers are probably the most common, but far from the only possible causes ( I seem to remember "SpringCleaning" causing this problem when people moved to Tiger 10.4.2 for example) .
New software or hardware are therefore the first things to look for.
If you haven't installed anything completely new then one possibility may be that something you are using is not compatible with the latest OS update, and needs an upgrade to a driver. Its also possible that this is a "one off" glitch caused by a temporary problem , but if it happens again I'd be taking careful note of anything that you were using in the previous session.
You might also want to use the Console (in Utilities folder) to look at your system and crash logs.
Cheers
Rod

Strange major problem with 975X PowerUp Intel MOBO

I’m suddenly having a strange major problem with a MSI 975X Platinum PowerUP Edition V2.1 MS-7246 Intel socket 775 motherboard. Previously, it had given me no problems at all.
It went like this:
Powered on system in the morning, booting from a cold start.
Hit DEL key to get into the BIOS.
Missed the window and the system booted into Windows normally.
Re-started the system from within Windows.
Hit DEL key to get into the BIOS and was successful the second time.
Hit the ENTER key on the first item “Standard CMOS Features”.
The DATE, TIME and other information was displayed on the next screen, but at this point, the BIOS screen became completely unresponsive to any keyboard input.
The only thing I could do at that point was to power off.
Subsequent power on boot-ups resulted in the system always freezing at the BIOS splash screen after the video card sign-on.
I have switched power supplies, hard drives, keyboards and video cards. I have disconnected everything except the video card, keyboard and one RAM module. I have switched the four RAM modules around and then reduced the RAM to one 256MB module in the proper slot. I even changed the battery on the MOBO, in case it had shorted out and removed and re-seated the BIOS chip. It still halts at the BIOS splash screen.
The BIOS chip can’t be completely dead, because I powered off and pushed the BIOS reset button on the MOBO to reset the BIOS to the factory defaults. When I re-booted, I could tell that it had actually reset to the factory defaults because I had previously set the BIOS to reboot the system on resumption of power and the factory default was to remain off until the power button was pushed, which was now the default.
I’m stumped! All I can think of is to get a new pre-programmed BIOS chip and see if that makes any difference, but I’m not sure this system is even worth the expense with no guarantee of success. Any suggestions on how I might get past the BIOS splash screen or do I for sure have a corrupt BIOS chip?

System specs as per the posting guidelines -
Board: MSI 975X Platinum PowerUP Edition V2.1 MS-7246 Intel socket 775
Bios: Version (can’t recall & can’t check since it won’t go past the BIOS splash screen)
VGA: ASUS EN7600GS nVidia GeForce 7600GS PCI-e 256MB DDR2 (also tried new XFX nVidia
Geforce 210 PCI-e 2.0 512MB DDR3)
PSU: Chiefmax 680W ATX (also tried new OCZ 700W ATX)
CPU: Intel 2.8GHz LGA-775 Core2 Duo Dual-Core Processor
MEM: 4 x Samsung 512MB 1Rx8 PC2-5300U (2GB total)
HDD: Seagate Barracuda 250GB SATA2 (also tried Seagate Barracuda 500GB SATA2)
COOLER: Intel OEM LGA 775 fan/heatsink C25897-001
OC: No
OS: Vista Home Premium 32-bit
I have been through the BIOS reset procedure several times and pretty much as outlined. As I said before, I could tell that it had taken a reset to the factory defaults, because the power on option had changed.

Wrt54g strange signal problem

I have a new wrt54g and I have a strange signal problem. When I am in the house close to the router I only have a good signal (3 bars) but when I take the notebook outside or all the way in the back bedroom I have a excellent signal (5 bars). I am thinking that something in the house might be interfereing with the signal but I have tried changing the channel and still have only 3 bars when in the house, and 6 bars when I take the notebook outside or to the back bedroom. I am using wap but I tried disabling it and still only 3 bars when around the router.
Any thoughts, and thanks in advance.

I tried it all but still the same but I did find this, when I take then computer in the back of the house or outside the signal goes up to excellent and stays there even if i take it back in the front of the house where I previously only had a good signal. But the only way to get a excellent signal is to take it far off from the router but once it does get a excellent signal it will stay there even when I take back around the router, crazy I know.
Any more advise or thoughts?

Strange connection problems -- software or hardware?

I've been experiencing some strange connectivity problems of late, and am wondering if it's a software or hardware issue. I'm running OS-X 10.4.11, and have noticed web-associated "drop-outs" occurring. When I'm browsing, any of the following will happen:
1. the pages will periodically stop loading, or will take forever to load a few final images.
2. the page will load with a different format (completely unformatted, like a throwback to Mosaic!).
3. the page won't load at all, and will instead give me either a "DNS error" message, or will default to my ISP's "We couldn't resolve your page" message.
4. Nothing out of the ordinary happens.
Throughout this process, the connection strength is 100%.
It seems this happens with both Firefox and Safari. Is this an issue with driver software, or is my Airport Card giving out? My computer is about 3 years old.

I have been having intermittent connection problems on several computers over many years now. We have 12 eMacs, all purchased within a few months of each other, all with 10.4.11. Some computers have almost perfect internet connection, but some are constantly losing connection. If the user just waits a few minutes, the network just comes back or if they open system preferences and renew the DHCP lease it comes back as well. We have tried replacing cables, reloading the operating system, repairing permissions, reseting safari... We are all connecting through ethernet cables through wall jacks then to a switch that is connected to our router. Our DSL provider claims it can't be wiring or a problem on their end or they would see it and we would all have problems. I am not super computer literate... Any suggestions for what I should check on the 4 or so computers that are having lots of connection problems?
Thanks for any words of wisdom!!!

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Have never heard of that problem before so can only give you an idea of some things to check.
Check in the Homehub management that it is not set to block access to the mobile devices. If you did a factory reset of the hub then it should have cleared any settings but it might be worth checking.
Have you checked that they are connecting to your Homehub and not to BTWifi which would require further log on to get internet access.
What exactly is happening with the devices when you try to connect to the internet. Is it all things to do with the internet or can you connect by 3g?
Have you tried to connect using another router such as at a friends house?

Strange math-problem with LabVIEW 7.1

Hello!
I am using LabVIEW 7.1 and I came to this strange math-problem. Could it be that it is a problem of LabVIEW 7.1?
Ok try this with LabVIEW 7.1:
open a new VI
place a subtract-VI (pallet numerical) on the block diagram and try to subtract 0.2 from 1.6
place a less-VI (pallet compare) on the block diagram and wire a numerical constant 1.4 to input x
wire the result of the subtraction to input y of the comparison
place an LED to the output of the comparison
and start this.
What does it say?
The LED should turn on and this means here that 1.4 would be less than 1.4 .
But I would have expected that 1.4 is not less than 1.4 .
This works also if you add or subtract upto 0.2 to/from the values 1.4 and 1.6 (or equivalent with 0.2) .
If you change the inputs of the comparison then the result is as expected and 1.4 is reported not to be less than 1.4 .
If you compare two constants with the same value 1.4 you will not get the same strange result.
Does anybody have an explanation for this?
Espelkamper

Hello,
For floating point math: Rounding to multiples of 0.1 is problematic as
those numbers are infinite fractions in base2 representation...
So maybe you should change your numbers to integers using fixed point math. If all your input values are in the range of 1.4 to 1.8 you can multiply by 10000 and round to next integer. Then do your comparison on that integer (there's also an 'InRange' function in the comparison palette).
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Strange setup problems

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