VI to calibrate LVDT

I am using LabVIEW 7.1 to develop a gauging application. I am using a SCXI-1600 for the DAQ and a SCXI-1540 with a SCXI-1315 terminal block to connect to my LVDTs. I would like a way to make a VI to allow the operator to calibrate the LVDTs. Is there any way that I can do this without granting the operator access to the block diagram? I guess I would like to make a VI that would walk the user through the calibration process, instead of accessing the DAQ Assistant on the block diagram.
Thanks for the help,
Chad

Hi Chad,
I think you have a good start on how to do the calibration. You can make it as difficult as you want I suppose, but basically want you need to do is calculate the slope between two or more points and the offset. Once you have those values, you can apply them to adjust the distances that you acquire with your SCXI system. There is a DAQmx example that will help you get started with acquiring from your SCXI-1540. In LabVIEW if you go to help>>Find Examples you will open the example finder. Browse into the folder Hardware Input and Output >>DAQmx>>Analog Measurements>>Position and you will find examples to help you get started. There is one specifically for LVDTs. You can first acquire data to get the slope and offset and then send that data to the main part of your program that does the data acquisition. You can use a formula node or even set up a custom scale for that channel using property nodes to adjust the data you acquire according to the offset and slope.
I hope this helps you get started!
Laura

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LVDT Calibration

Hi ,
im trying to configure my SCXI 1540 Module w/1315 terminal block card for excitation voltage 3 Vrms and frequency 2.5Khz using Max
I have LabVIEW Express 7.1 PDS - SCXI-1000 Chassiss - along with PCI-6254 is attached to the 1540 card.
MAX says it recognizes all the cards in the chassiss. The LVDT Probe when connected to the SCXI 1540 does not show any change in values even when the probe is moved .
The probe has been checked individually as well as the the excitation signal on the SCXI 1540 module channel has been checked on the CRO.(Though in MAX we have set the excitation frequency to 2.5KHz it shows a frequency of 7.8 KHz).
The PCI 6254 has two connector inputs Connector0 is from the SCXI and Connector1 is from SCB 68 module (Digital signals from the client main panel are routed to the SCB68 terminal block).
Plz Help
Subhash

Hi Subhash,
The SCXI 1540 can be sometimes difficult to calibrate. I found a great article that may help troubleshoot the problem found here. In addition, have you tried to verify if modifying the frequency in MAX modifies the actual frequency that you see through the CRO. This might help you modify the settings to achieve the 2.5 KHz frequency. It might help if you could provide the specifications of the LVDT probe that you are using to make sure that it meets the requirements. I'm also assuming that you are using a LVDT position task. Can you verify this?
Regards,
Paul C.

How do I discharge (calibrate?) my Macbook Air (Mid 2013) without harming the battery?

I just got the latest MacBook Air this week. And after reading the discussion here https://discussions.apple.com/message/22294118#22294118 I chose not to calibrate it the first time since it shouldn`t be necessary with lithium-based batteries.
The thing that still confuses me about the calibration issue with the Macbook Air (Mid 2013) is the text I`ve underlined below from Apples page and where they are talking about lithium-based batteries:
http://www.apple.com/batteries/notebooks.html
"Standard Maintenance
For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her notebook on the train, then plugs it in at the office to charge. This keeps the battery juices flowing. If on the other hand, you use a desktop computer at work, and save a notebook for infrequent travel, Apple recommends charging and discharging its battery at least once per month. Need a reminder? Add an event to your desktop’s iCal. When your battery no longer holds sufficient charge to meet your needs, you may choose to replace it. If your notebook came with a built-in battery, you should have the battery replaced only by an Apple Authorized Service Provider."
So when Apple is talking about discharging, how should I actually discharge it? If discharging a lithium-based battery completely is harmful for the battery life, then what is the ideal way to do this without harming the battery? How should I discharge my battery when the calender says it`s time?

Calibration is not needed for "built-in" -non-removable- battery.
"Portables with built-in batteries
Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article. These computers use batteries that should be replaced only by an Apple Authorized Service Provider."
MacBook Air
MacBook Air (all models)
http://support.apple.com/kb/HT1490
"If your portable Mac has a built-in battery, you don’t need to calibrate the battery."
http://support.apple.com/kb/PH11078?viewlocale=en_US
Best.

Error Message while trying to burn a DVD-R with my MacBook Pro: "The disc can't be burned, because the device failed to calibrate the laser power level for this media.

While using my Mac OS X Version 10.6.8 to burn a DVD-R I keep getting the error message: "This disc can't be burned, because the device failed to calibrate the laser power level for this media."
So, I tried the iDVD and got the same error message.
Can anyone out there help me? I've tried both a DVD - R, and a CD.
I made a short 2:20 minute presentation from iMovie and used the "share" to iDVD, then to iTunes, then I tried exporting it to Quicktime and saved it on my desk top. That is when I tried burning by opening the blank DVD-R in the finder then draging the movie on to it and selecting the burn option. Thank you for your time in helping me with this frustrating problem.
Peace, Pyxidis

I have had that same problem, but it was unrelated to any upgrade.
In my case the optical drive was simply failing, and I replaced it - it was a Powerbook, about eight years old.
It is possible that it's unrelated to Lion, as unlikely as this may seem, since you've just upgraded.
Optical drives seem to be the most life-limited component in these computers. The laser just seems to get weak with age.

TS3048 Is there a way to "calibrate" the magic mouse? I have rearranged settings for mouse, air-cleaned, tried different surfaces, however, it seems to be misinterpreting finger movements and randomly trying to open launchpad when enabled.

Is there a way to "calibrate" the magic mouse? Batteries are good. I have rearranged settings for mouse, air-cleaned, tried different surfaces, however, it seems to be misinterpreting finger movements and randomly trying to open launchpad when enabled-flashing between the app I am in and launchpad. When right-click is enabled I have to go to the extreme upper left of mousepad to click or it is interpreted as right-click. Won't consistently "scroll". Suggestions?

Here's some things you could try....
Reset your computer's PRAM
http://docs.info.apple.com/article.html?path=Mac/10.7/en/mh26871.html
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Mac OS X: Starting up in Safe Mode
http://support.apple.com/kb/HT1455

How can I get my iPhone 4 to Calibrate in the Nike/ipod App?

I have tried the direction from my phone by walking to calibrate, powered my phone off, did a full reboot and so far nothing has worked for me - called Apple and they want me to bring my phone in for service and buy an Apple Care plan but I am ona fixed income so I would like to try to do some research with the knowladgeable commnity first. I wm willing to give most anything a try, within reason (obviously ) I want to use this, I did on my Ipod Nano, but it was stolen, so here I though I had sll in one place and it doesn't work! I cannot calibrate my compass either, if that has anything to do with this...
thanks,
diana

When it suggests a word you are to tap the X next to the word saying you don't want it, thus adds what you typed to the dictionary.
Note though it adds it, but words are "weighted" in the internal algorithim so your word may not show up right away next time you try to type depending how heavily weighted the word it suggests is. The more you tap the X to say no it isn't what you want, the more it weights yours and removes the weight from the other word.
It is a learning process.

Is there a way to calibrate voice control on ipod touch ios 6.0.1?

it seems like every time I update to a new ios it just causes a new problem. not usually a big one, but something. last time (when I updated to ios 6) my app store kept crashing. this time the biggest problem I'm having is that since updating to ios 6.0.1 my voice control can't seem to understand me. I ask it to play artist "pink" and instead it somehow thinks I've asked it to play songs by "greenday" or, even funnier "mannheim steamroller" it's like I'm playing russian roulett on whether or not it will actually understand me, only instead of 6 chambers and one bullet (it misunderstanding me being the bullet) it's more like 1,000 chambers and 999 bullets. I have pretty much given up on voice control for now, which means I don't get to change what I'm listening to if I'm driving, since I'm very safety conscious and will not look at the screen to change it. does anyone know if there is a way to calibrate the voice control?

Nothing special for VC. You can try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
iOS: How to back up your data and set up as a new device

Unable to calibrate X201t pen under Windows 8

I am unable to calibrate the pen of my X201t any longer. The first time I click the "Calibrate" button in Tablet PC Settings the white screen with the crosshair markers in the four screen corners appears but it always disappears by itself within seconds (i.e. before I even have a chance to hit any corner). Apparently this thing crashes, because subsequent clicks on "Calibrate" are then always ignored. (i.e. there is no reaction if I click the button again). A reheat brings this back as described, i.e. for a single time and for a few seconds only.
Please advise, what I can do to get this operational again, as I urgently need to recalibrate my pen as its calibration is increasingly off and it gets harder and harder to use it decently.
This is on a X201t running Windows 8 Pro (x64 version).

Hi, mmo
I would recommend booting the machine into Safe Mode to see if the calibration works here. As the calibration program keeps crashing quickly, it sounds like it is a software issue, and attempting the calibration while in Safe Mode is a good step.
To boot into Safe Mode in Windows 8:
Open the Charms Bar on the right-hand side.
Select Settings.
Select Change PC settings.
Select General.
Scroll to the bottom of the right-hand pane.
Select Restart Now under Advanced startup.
Select Advanced Repair Options.
Select Troubleshoot
Select Advanced Options
Select Windows Startup Settings
Click Restart.
Upon rebooting, press 4 to boot into Safe Mode or 5 to boot into Safe Mode with Networking (allows Internet access.)
Try using the calibration here and see if it goes any better for you.
Best of luck,
Adam
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How do I deal with this error message when burning DVD's: The disc can't be burned, because the device failed to calibrate the laser power level for this media.

I am getting this error message when trying to burn a DVD: The disc can’t be burned, because the device failed to calibrate the laser power level for this media. iMac, Mac OS X 10.6.8 Memorex DVD-R 12x Any ideas?

First, try a different batch of recordable DVDs. If you still have problems, you may want to make an appointment at the genius bar and have it checked. The drive may be failing.

LaserJet Pro CM1415fnw color MFP frequently calibrates

HI, i've owned a laserjet pro CM1415 now for a few years and it frequently calibrates, often every few minutes. the only
way it stops is when i turn the printer off. It is now making weird noises when it calibrates. How can i fix this issue? thankyou

Hi @raja_inc,
I see that you are experiencing issues with the printer frequently calibrating and it making noises. I would like to help you resolve this issue.
Make sure the printer is connected directly to a wall outlet. (don't use a power hub or a surge protector) This ensures the printer is receiving full power and may help this situation.
Inspect the toner cartridge for damage:
Examine the surface of the imaging drum on the bottom of the toner cartridge.
CAUTION: Do not touch the roller (imaging drum) on the bottom of the cartridge.
Finger prints on the imaging drum can cause print-quality problems.
Look for any scratches, fingerprints, toner, or other damage on the imaging drum.
Check for anything hanging out, such as the blade.
Did you recently change any of the toners?
Are you using Genuine HP Toner?
Any defects printed on the pages?
Do you get the noise when powering up the printer too?
If you do have the noise, then remove all the toners and restart the printer again to see if you have the same results, to find out if it is the printer on possibly one of the toners. Then put in one toner at a time, restart the printer, to find out which toner is causing the issue.
If you need further assistance, just let me know.
Have a great day!
Thank You.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

DVD Drive Failure to Calibrate power lever....

I'm having an issue with my dvd burner. I've tried both Toast Titanium & Disk Utility and when trying to burn data in Toast and an .dmg file in Disk Utility I get "The device failed to calibrate the laser power level for this media". What can I do to get my burner back to "normal"? I'm close to taking the whole thing out to a field and using it for baseball "practice".

I was able to get the dvd lens working again. I had found some postings on other sites about the same issue, and some people had mentioned that using a lens cleaner had allowed them to burn discs again.
Therefore I used one that I picked up a while back and that cleared up the dvd lens. I may have to replace the lens in another year or 2 but not just yet.

Do I need to calibrate my battery?

I bought my 13" MBP (2.7 GHz i7) about a month ago and I noticed the battery run-time has decreased already. I mostly use the battery, and I plug it in to charge when it drops to around 60% or lower. Most of the time, I allow the battery to charge all the way, and recently it charges to only 98% or 97% at "Fully Charged". I turn off the computer, regardless of the battery percentage, when I don't use it. I know about calibrating laptop batteries, but I am not sure if I should do it, this part from Apple's website was a bit confusing:
Additional Information
Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article. These computers use batteries that should be replaced only by an Apple Authorized Service Provider.      "
Here is my battery information:
Battery Information:
Model Information:
Serial Number:          W011555A1D3LA
Manufacturer:          SMP
Device Name:          bq20z451
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          0201
Hardware Revision:          000a
Cell Revision:          0165
Charge Information:
Charge Remaining (mAh):          4344
Fully Charged:          No
Charging:          No
Full Charge Capacity (mAh):          5542
Health Information:
Cycle Count:          28
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          -975
Voltage (mV):          11830
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          10
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          Yes
Display Sleep Uses Dim:          No
Battery Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          5
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
Reduce Brightness:          Yes
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          No
Charging:          No
So, should I calibrate my battery? Also, any advice for extending the life of my new laptop?

No. Also, see:
About Batteries in Modern Apple Laptops
Apple - Batteries - Notebooks
Extending the Life of Your Laptop Battery
Apple - Batteries
Determining Battery Cycle Count
MacBook and MacBook Pro- Mac reduces processor speed when battery is removed while operating from an A-C adaptor
Battery University

HT201300 How do I calibrate the battery of my MacBook Pro 15?

Battery of my MacBook Pro 15 seems to be draining out very quickely. How do I calibrate it? How to make it better perform?

Panhel wrote:
How do I calibrate it?
If you have a newer MBP, you do NOT calibrate the battery:
http://support.apple.com/kb/ht1490
How to make it better perform?
These articles provide information on MBP battery use:
http://support.apple.com/kb/ht1446
Ciao.

I just bought an Epson Stylus Pro 3880 and the printed images look yellow. I calibrate my MacBook Pro monitor with a ColorMunki Display. I want to make sure my Lightroom print settings are correct.

I just bought an Epson Stylus Pro 3880 and the printed images look yellow. I calibrate my MacBook Pro monitor with a ColorMunki Display. I want to make sure my Lightroom print settings are correct.

This what I have been trying...... Maybe my eyes are screwed up or don't understand the process....
What I have been trying to do is squint and make the apple disappear by moving the sliders around in each step. Is that correct?

How do I calibrate the monitor to the printed photo for equal color tone and brightness?

Where in the program do I calibrate the monitor color to the resulting printed color. My printed photo is much duller and "blacker" than the monitor. Other color programs has a setup section to plug in the monitor's ICC profile along with the printer used so the resulting printed photo is very close to your adjusted photo on the monitor.

blessedby3 wrote:
I just got my laptop and I'm a photographer. It is very important to get my laptop similar in color to my photos. So when they are printed they look similar to most basic commercial printer (Walgreens etc) I had no problem on my old computer. My Satellite seems very bright and the people looked washed out. I used th ctrl, alt f12 key and there was a contrast adjustment. I just can't seem to get a nice natural color from the computer. Can someone let me know what they use or what looks good to them. The factory default seems way to bright and people look to bright?? Thanks so much in advance...
Katie<><
Perhaps this gadget might help: Pantone huey MEU101

VI to calibrate LVDT

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