How can I solve a GPIB/VISA compatibility problem?
My Labview (version 5.1 on a Macintosh) application talks to a variety of instruments over GPIB. In one mode it communicates with both 1) a LakeShore 340 temperature controler (LS340) using VISA-based drivers and 2) a Linear Research LR-700 AC resistance bridge using low-level GPIB functions. My application can query these instruments a couple of times per second, usually without trouble. However, periodically (about once an hour) the GPIB Read will cease to work with the LR700 or any of the other instruments on the same bus, returning error 6 (I/O operation aborted). GPIB Write still works fine. Querying the LS340 when the system is in this state produces the VISA error Hex 0xBFFF003C (Insufficient system resource
s to perform necssary memory allocation). Querying the LS340 a second time is successful, and thereafter GPIB Reads are also successful.
I think somehow the GPIB and VISA protocols are interfering with each other. (Although the data dependency requires that the VISA Write/Read be complete before the GPIB Write/Read begins, I am not opening/closing the VISA session with every iteration. The VISA session is opened on the first iteration and stored in a shift register.) However, the maddening infrequency of this problem makes it very difficult to troubleshoot. Any suggestions?
Hi Dan,
I'm trying to follow your suggestion, but I can't get the VISA upgrade to function. I downloaded the NI-VISA 2.6 full development installer, which recommends uninstalling the prior version first. I couldn't find a good way to do this (the documentation is no help), so I ended up just reinstalling the entire Labview 5.1 without the VISA package. But even this approach (I tried several others) doesn't work - when I run VISA commands from within Labview after the VISA 2.6 install, I get 'unknown system error'. Any suggestions?
Chris
Similar Messages
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How can a I solve and GPIB/VISA compatibility problem?
My Labview (version 5.1 on a Macintosh) application talks to a variety of instruments over GPIB. In one mode it communicates with both 1) a LakeShore 340 temperature controler (LS340) using VISA-based drivers and 2) a Linear Research LR-700 AC resistance bridge using low-level GPIB functions. My application can query these instruments a couple of times per second, usually without trouble. However, periodically (about once an hour) the GPIB Read will cease to work with the LR700 or any of the other instruments on the same bus, returning error 6 (I/O operation aborted). GPIB Write still works fine. Querying the LS340 when the system is in this state produces the VISA error Hex 0xBFFF003C (Insufficient system reso
urces to perform necssary memory allocation). Querying the LS340 a second time is successful, and thereafter GPIB Reads are also successful.
I think somehow the GPIB and VISA protocols are interfering with each other. (Although the data dependency requires that the VISA Write/Read be complete before the GPIB Write/Read begins, I am not opening/closing the VISA session with every iteration. The VISA session is opened on the first iteration and stored in a shift register.) However, the maddening infrequency of this problem makes it very difficult to troubleshoot. Any suggestions?Hi Chris,
One suggestion;
Write two seperate test routines that each use only one method or the other.
Test the H*&#$ out of each to attempt to determine if the issue is associated with the high level or the the low.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
How can I solve grey start-up screen problem?
Hello all,
my seemingly healthy mid-2010 Macbook running the latest version of OS 10.6 has suddenly become unresponsive and won't boot up past the initial grey screen. Below is a list of things that I thought were relevant:
Over the last few months there have been frequent (a few times a week when connecting via USB internet dongle) kernel panics associated with Telstra Sierra AirCard 320U (https://discussions.apple.com/thread/2776956?tstart=0 ; http://www.mac-forums.com/forums/os-x-operating-system/210007-continued-kernel-p anics-can-damage-my-machine.html )
Not sure if related, as this happened when not connected (but hadn’t signed out of USB modem account, which other users say could affect things).
Then yesterday, having removed dongle and connected to internet via ethernet (routed through modem to AirPort): -
Machine was really slow – almost freezing, then froze up.
Hard re-boot.
Got folder icon with question mark.
Did another hard re-boot and got the grey screen of death.
Tried re-booting with install disk.
Didn’t get far until I re-set SRM and PRAM, but once booted up and using disk utilities from install disk the hard drive wasn’t even showing. In Terminal it was listed as five disks of 500GB (approx.), the size of my hard drive, but couldn’t get to mount from Terminal.
On another re-boot (with option key) to choose start-up disk, the HD appeared, but as soon as I clicked on it, it ‘puffed’ (like when you remove an icon from the dock) away.
I read on a forum that a loose connection could be the fault (I just had a battery replaced at the Apple Store, so thought it could have been nudged then), so I removed and re-installed the hard drive.
This seemed to fix it and I booted up from the hard drive, logged in and everything seemed to be fine. I did a backup (previous was two days ago, but good to not lose anything!) to Time Machine, ran Disk Utility, verified disk, repaired permissions, looked at the SMART status and everything was fine.
Then the machine slowed down again. I opened Disk Utility again and the HD wasn’t even listed and slowly the machine froze again and now won't boot up even from the install disk. Just sitting on the grey screen of death. Have reset SMC and PRAM but no response.
Any suggestions very welcome!
Also, any insights into whether this is a HD problem or something else. I live very remotely, so taking it in for service is not feasible, due to both time, but mostly cost. If, despite the apparent OK SMART status and Disk Utility verification it is definitely the HD I can easily get another - if it's something else, well it might be time to buy a new mac.After having no luck, I later tried removing and reinstalling HD, but that was no help. I then re-installed an old failed HD and was able to log in using Installation disk (but not prompt hardware test by holding D key at startup). Disk utility showed no HD (which may be expected as it was a failed drive). I then restarted again with no problem.
I powered down and returned the current HD and was able to start holding down C to boot from disk. Once I was in, Disk Utility showed my HD correctly and I performed a Verify on the disk and ‘Macintosh HD’ as well as repaired permissions on both and the result for all was a pass.
I then used the Startup tool to select the HD as the startup disk and this appeared to be successful. At the login screen I re-started again, this time in Safe Mode, which was also successful. I then saved some media files that are excluded from Time Machine backup and did a Time Machine backup to two separate disks. When I tried to check the time machine history of one of the disks (‘enter time machine’) the machine froze again. I selected restart from the options after pressing the power button, then restarted in Safe mode. Then I created a bootable clone on an external hard drive – just to be sure!
After updating software I then re-booted and ran Apple Hardware Test (extended) off the Installation disk, which ran for 2 hours and found no problems.
I am going to run a test on the RAM (even though I'm pretty sure the hardware test does that) - any other thoughts still very welcome!
I think the next step is to erase the disk and reinstall the operating system. I'm assuming something got corrupted there ...
Will also go through these steps - https://discussions.apple.com/docs/DOC-3353 -
I have windows 8.1 and cannot access itunes store even creating a new apple id. With other users on the same computer I can access itunes store. How can I solve this?
i had the same problem before using a fresh install of Windows 8.1. I have resolved this issue by running the program compatibility wizard. This I did by right-clicking on the iTunes icon in the desktop, selecting Troubleshoot compatibility, waited for it to detect compatibility issues and when presented with the following options: 1.) Try recommended settings; 2.) Troubleshoot program, I chose the latter. When asked what problems I noticed, I checked the following: "The program worked in earlier versions of Windows but won't install or run" and "The program requires additional permission"
After that, it tired to resolve the issue, and provided the necessary settings to run iTunes. Now it's running flawlessly. I have Avast anti-virus installed though.
HTH! -
when i connect my ipad to my Mac to update the ipad to IOS7 nothing happen. how can i solve this problem Many thanks, Paul
Can your iPad be upgraded to iOS 7? If so, what are you doing that isn't working?
See the chart below to determine whether you can upgrade your device and what you can upgrade to. If you do not have a Software Update option present on your iDevice, then you are trying to upgrade to iOS 5 or higher. You will have to connect your device to your computer and open iTunes in order to upgrade.
IPhone, iPod Touch, and iPad iOS Compatibility Chart
Device iOS Verson
iPhone 1 iOS 3.1.3
iPhone 3G iOS 4.2.1
iPhone 3GS iOS 6.1.x
iPhone 4 iOS 7.0.x
iPhone 4S iOS 7.0.x
iPhone 5 iOS 7.0.x
iPhone 5c iOS 7.0.x
iPhone 5s iOS 7.0.x
iPod Touch 1 iOS 3.1.3
iPod Touch 2 iOS 4.2.1
iPod Touch 3 iOS 5.1.1
iPod Touch 4 iOS 6.1.x
iPod Touch 5 iOS 7.0.x
iPad 1 iOS 5.1.1
iPad 2 iOS 7.0.x
iPad 3 iOS 7.0.x
iPad 4 iOS 7.0.x
iPad Mini iOS 7.0.x
iPad Air iOS 7.0.x
=====================================
Select the method most appropriate for your situation.
Upgrading iOS
1. How to update your iPhone, iPad, or iPod Touch
2. iPhone Support
3. iPod Touch Support
4. iPad Support
a. Updating Your iOS to Version 6.0.x from iOS 5
Tap Settings > General > Software Update
If an update is available there will be an active Update button. If you are current,
then you will see a gray screen with a message saying your are up to date.
b. If you are still using iOS 4 — Updating your device to iOS 5 or later.
c. Resolving update problems
1. iOS - Unable to update or restore
2. iOS- Resolving update and restore alert messages -
my apple id is not working when i sign in from my laptop it works but when i sign in from my iphone4 then its not working it gives the message of "your aapleid or password is incorrect"? how can i solve this problem please help
Hey nocillado,
Thanks for using Apple Support Communities.
It sounds like you have 2 things you want to address. These articles can help you use iCloud with your existing Apple ID.
Get help activating your iPhone
http://support.apple.com/kb/ts3424
Using your Apple ID for Apple services
http://support.apple.com/kb/ht4895
Using the same Apple ID for Store purchases and iCloud (recommended)
Have a nice day,
Mario -
my speaker is not working properly in 4s if i use headphone its working now my volume increase decrease button is also not working properly how can i solve it pl help me my warranty finished
Hello. I sent my WRT1900AC V1 to Linksys four days ago (Monday) via UPS with a RMA. Linksys paid the shipping and everything. The router is still in route, and it should arrive to their offices tomorrow. Once they receive the WRT1900 AC V1, they are going to send me an EA8500 as a replacement. But I have been reading the comments about the EA8500 here in the forum and it seems to have the same problems. I guess the firmware is extremely flawed in both routers (maybe it is almost the same code?). Anyway, I will try the EA8500 and I hope it works. I bought a temporary router from Walmart and I paid $35 for it. It is a Belink N600 DB. I can't believe that a $35 router is working a lot, lot, lot better than my previous $250 WRT1900AC router. Unbelievable. If the EA8500 doesn't work, I'm going to try and get my money back from Linksys, or contact The Consumerist or someone to get my money back and get a Nighthawk instead.
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How can i solve "Cannot connect to the iTune Store" issue on my iPhone?
Hi,
Frequently i'm getting alert message (Cannot Connect to the iTune Store) while use my valid Credential on iPhone 4 (even Itunes application) Setting-> iTunes & App Stores->. but same credential accepted other iPhones too why not in my iPhone 4. same way others Apple ID wouldn't accept in my iPhone 4. how can i solve this problem? please suggest me.
Thanks in Advance,
Suresh Balakrishnan.Take a look at these instructions:
http://www.digitaltrends.com/mobile/how-to-make-ringtones-for-iphone/ -
I have deleted all my videos songs and photos from my iphone 4 but when i connect to itunes it still shows 17gb free. how can I solve this issue without restore. Total storage of my iphone is 32 gb.
I don't see an issue, but if you mean why didn't you get most of your memory back you need to see what else is using storage. Go to Settings/General/Usage. Wait a bit for it to calculate storage allocation, then when it finishes you can see how much storage each app uses.
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I'm having trouble with my Apple ID. I changed my email account, and recently (a month ago) and since I switched is requested every time I open any app to Apple ID password to the old email. How can I solve this? Could it be that my iPhone 4S is in sync with my Ipod???
If you updated your existing account then try logging out of it on the iPhone by tapping on the id in Settings > iTunes & App Stores and then log back in and see if that 'refreshes' the account on the iPhone. If you created a new account then any content that you purchased/downloaded via the old account will remain tied to that old account, and only that old account can download updates to its apps.
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In my iPad 2 with IO6 today I can not send emails from my gmail account, they go to the outbox directly...why? How can i solve this problem? ..I restarted the IPad but the problem was not solved. Please help.
Greetings,
Questions:
1. What version of the Mac OS are you running (Apple > About this Mac)?
2. What version of the iOS are you running (Settings > About)?
3. Do you use MobileMe/ iCloud or another server based sync solution like Google or Yahoo?
4. Do other changes to synced information like Address Book content sync successfully back and forth?
Based on your description it sounds like you have a 1 way sync issue. Events sync fine between the iOS devices and fine from the computer to the iOS devices but not from the iOS devices to the computer.
Try:
Backup your computer and iOS devices before doing anything else:
http://support.apple.com/kb/HT1427
http://support.apple.com/kb/ht1766
Ensure all the devices in use are fully up to date: Apple > Software Update / Settings > General > Software Update
Make separate backups of critical data:
Backup your computer Addressbook: http://docs.info.apple.com/article.html?path=AddressBook/4.0/en/ad961.html
Backup your computer iCal: http://support.apple.com/kb/HT2966
Reset syncing on your Mac: http://support.apple.com/kb/TS1627
Reply back if that does not resolve your issue.
Hope that helps. -
how can I solve this error message? "Some of your photos, including the photo “IMG_0374.jpg”, were not copied to the iPad “(my name’s) iPad” because they cannot be displayed on your iPad."
There were 273 photos in the event syncing from my Mac, but only the last 103 made it to the ipad. Most of the photos were taken by an iphone. I would appreciate any thoughts or insights - thanks.Adrian-
That error message suggests the photo is somehow corrupt.
Do you have the Apple Camera Connection Kit? You can set up a USB thumb drive with MS-DOS FAT-32 format and copy your photos to it into a folder named DCIM. Assuming they have an 8 character plus suffix name, the iPad will recognize them and give you the option of transferring them via the Kit's USB adapter.
Once they are transferred, you can find out if there is a problem with any.
Fred -
why is that i can not view my warranty status? whenever i tried to put my phone's serial number itunes prompt that my serial number is not a valid one. how can i solve this issue?
https://selfsolve.apple.com/agreementWarrantyDynamic.do
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I have created a Blog in iWeb and uploaded it to an FTP server. It works fine, except that the 'Comments' facility is missing. When I upload the blog to MobileMe the 'Comments' facility is there and working great. How can I solve the problem on the FTP server Blog.
You haven't a problem. You simply did not read the iWeb Help :
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My hard drive has 70.93 GB available, yet when i have more than one internet tab open, i have to force quit google chrome because 'there is no more available application memory'. How can I solve this? I have a 2009 macbook pro running on 10.6.8. I have tried updating to mavericks through the mac app store but after it downloading for a day i got an error message saying there was a problem with the download. The same thing happens if i try to update itunes or the mac app store. After research, i have also tried repairing disk permissions, but every time they do get repaired the 'repair' button still appears, i'm not sure if it's because it was unable to repair the initial problems or if it just keeps detecting new ones.
2 GBs is a minimum in which you can do many things, but not concurrently. Be very careful to not install third-party add-ons, limit the number of applications you choose to enter in Login Items, run as few applications concurrently as you demand.
I would consider adding more RAM to your computer. Your model supports 8 GBs, so I would install that.
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