4472 DSA board and Proximity probe

I am trying to read output from the proximity probe using the PCI 4472 DSA board. For the grounded source(proximity probe) the connection given in the 4472 user manual(Page 2-7) is a pseudo-differential one.
The proximity probe(which i am sure is the industry norm) needs -24V power supply, so the +24V power supply is INVERTED to power the probe. The +24V lead become the COMMON and the GROUND lead becomes -24V.
The signal wire goes from 0 to -20V (Range) with respect to the COMMON(24V higher than the TRUE GROUND, since the power supply was inverted and +24V lead of the supply became COMMON for the probe).
According to the specs(signal ground and 4472 ground should not have potential diff. of more than 2.5V) and the pseudo-diff
erential configration I think it will blow the board as the 24V across the 50 ohm resistor will result in 0.5A of current.
Please help. Is there anyway out of this problem.
Thanks,
Vishal

Thanks for your answer Dan, one issue has certainly been taken care of, what is bothering me now is that the potential difference of 24V between the signal and board ground might hurt the board, NI specifies a max limit of 2.5V and certainly NI cannot make a board which is not compatible with the proximity probe(-24V power supply norm), since this board is meant to be used with proximity probes, accelerometers etc.
Looking forward to your reply.
Thanks,
Vishal

Similar Messages

4472 DSA and occurences

Does anyone know if the DAQ occurrences are supported with 4472 DSA boards?
I am trying LV7 Cont Acq&Chart (Async Occurrence) example program and it
fails with error -10403 (NI-DAQ LV: The specified device does not support
the requested action (the driver recognizes the device, but the action is
inappropriate for the device). ) Just wanted to make certain! Thanks,
Debby

Debby,
The 4472 DOES support DAQ occurrence #1 (fire occurrence when backlog reaches a certain number in a continuous acquisition). I don't think it supports other occurrences.
Regards,
Chris

When does a clock signal appear on a RTSI bus using DAQmx for a PCI NI-4472 DSA?

Hello,
I am trying to synchronize several PCI NI-4472 DSA boards over a RTSI cable using MATLAB. I have read that with DAQmx it is not necessary to use DAQmxExportSignal to put the clock signal on a RTSI line provided that the RTSI cable is registered in MAX and that the DSA cards are listed as being connected to the RTSI device. Apparently, the DAQmx drivers are supposed to route the clock signal between the cards as required….
So I have done the above and see in MAX, in the device routes tab for Dev1, that
/Dev1/ai/SampleClock uses RTSI6
/Dev1/ai/SampleClockTimebase uses RTSI8
Right now I am monitoring the RTSI lines on an oscilloscope in the hopes of detecting a clock signal on one of the three boards in the system while one board (the eventual master) is acquiring data using the Test Panels in MAX. I am getting nothing on the ‘scope (may be monitoring the wrong line – have just posted a request for RTSI pinouts for this DSA) and am wondering under what circumstances is the clock present on the RTSI bus.
My real problem is that MATLAB R14SP3 does not yet support a master card in a synchronization application but, oddly enough, seems to allow one to setup slave cards. I would like to continue using the MATLAB data acquisition toolbox to manage the DSA cards and the application and would rather avoid using calls the DAQmx dll library. (It's not clear how to integrate the functionality of the data acquisition toolbox with direct calls to the DAQmx library.) So I am looking for a workaround to get the clock signal on the RTSI bus so that I may try out the slaves.
Thanks,
Sebulba

Hi
Both ports of a two port CAN board are handled by one processor and they use the same memory for alocating the necessary queues.
But, both ports if connected to different CAN buses have their own handle, own queues and error handling. That means if one Bus enters to BUS OFF, the second bus can still communicate. And you can stop and restart communication independently on both ports. Even the ncaction reset works on a single port at a time.
DirkW

PCI 6602:How can I use the digital lines of the board and in the same time to generate pulse train using a counter?

Hello!
My problem appeared when I tried to update my code from Traditional NI-DAQ Legacy to DAQmx.
I am using 2 counters (counter 5 and counter 7) from PCI-6602, to generate pulse train, and also the Digital I/O lines of the port 0 (the lines form 0 to 7). What I do in my application is that I am starting to generate the pulse train on the output of the 2 counters, and after that I am playing with the state of the digital lines.
In traditional there was no problem using the counters and the digital lines in the same time, everything was going perfectly, but in DAQmx this is not possible.
What happens: I start to generate pulse train on the output of the counters, no errors encountered, but when I try to modify the state of one line of the digital port the generation of the pulse train is stopped. This is happening when I start the task associated to the digital port.
My question is: it is possible to create a channel on the digital lines without altered the channels created for the counters?
Another thing what I manage to see using the "Measurement & Automation Explorer" and Test panels for PCI-6602, basically is the same thing, I generate pulse train on the output of the counter 7 and try to start a task on the digital line, but I get one error :
"Error -200022 occurred at Test Panel
Possible Reason(s):
Measurements: Resource requested by this task has already been reserved by a different task.
Device: Dev4
Terminal: PFI8"
Instead if I use the counter 0 or counter 1 to generate pulse train I don't encounter the same problem.
Which resources are used by the counters 2 to 7 from the PCI-6602 board and the counters 0 and 1 do not use?
Thank in advance for any replies!
Ciprian
Solved!
Go to Solution.

Hello Jordan, thank you for your reply.
I am sorry but I can not see or run your example, I don't use LabView, I use Visual C++ for developing.
Here is the code for generating the pulse train:
GeneratePulseTrain(unsigned long ulCount1, unsigned long ulCount2)
    short nStatus = 0;
    nStatus = DAQmxCreateTask("",&m_taskHandle);
    nStatus = DAQmxCreateCOPulseChanTicks (m_taskHandle, "Dev4/count5", "", NULL, DAQmx_Val_Low, 0.0, ulCount1,ulCount2);
    if( bTriggerMode == true) // if hardware trigger is enabled
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_ArmStartTrig_Type, DAQmx_Val_DigEdge);
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_DigEdge_ArmStartTrig_Edge, DAQmx_Val_Rising);
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_DigEdge_ArmStartTrig_Src,"Dev4/PFI17" );
   //set the internal timebase
   nStatus = DAQmxSetCOCtrTimebaseSrc(m_taskHandle,"Dev4/count5","20MHzTimeBase" );
   nStatus = DAQmxStartTask(m_taskHandle);
    return nStatus;
And the code where I try to set the digital line:
SetChannelState(short nState)
    short nStatus = 0;
    uInt8 wrtBuf0[1]={0};
    nStatus = DAQmxCreateTask("",&m_taskHandle);
    // Configure line as output
    nStatus = DAQmxCreateDOChan (m_taskHandle, "Dev4/port0/line0", "", DAQmx_Val_ChanPerLine);
nStatus = DAQmxStartTask(m_taskHandle);
    wrtBuf0[0] = nState;
    nStatus =DAQmxWriteDigitalLines (m_taskHandle, 1, 0, 0, DAQmx_Val_GroupByScanNumber , wrtBuf0, NULL, NULL);
    nStatus = DAQmxWaitUntilTaskDone(m_taskHandle,10);
    nStatus = DAQmxStopTask(m_taskHandle);
    nStatus = DAQmxClearTask(m_taskHandle);
    m_taskHandle = 0;
    return nStatus;

Key board and track pad not working

Ok, My situation is similar to some of the other things posted but not quite.
I tried to wake my computer up from sleep the other day and it wouldn't "wake up" so I did a hard shut down and restart. When it restarted the key board and track pad did not work. The caps lock light wouldn't come on or anything. I tried connecting a usb apple keyboard and mouse and those didn't work either.
When switching to windows in bootcamp, everything works. So... I guess that means it's a software thing.
I called Apple support and we did all the possible key combinations and restarts possible and it came down to this: I need to archive install tiger again, then install all of the updates, then install leopard back on (I don't have leopard disk because it was a family pack and im at college). My roomate's macbook (White, bought in aug 2008) install disks which are 10.5.2 do not work with my computer.
My question is: Is this really the correct solution to my problem? Will archiving and installing tiger then leopard affect my files? I haven't backed up using time machine in a month, so is there a way to backup through osx with my keyboard and trackpad not working or can I do a good back up through my windows partition in bootcamp? Any more tips? Thanks, this has never happened before and I guess I'm a little clueless.

Do you have access to another Mac? If so, possibly you could use Firewire Target Disk Mode to access your drive and do a current Time Machine backup:
http://support.apple.com/kb/HT1661
Since you have a family pack of Leopard at home, possibly you could have someone burn a safety copy of it and send it to you so that you can reinstall Leopard. Once you have the OS installed and brought up to date, you could even restore from Time Machine if you had to.
Since we don't know all the steps you took, it's hard for any of us to say if this is the right solution. Evidently the Apple tech came to the conclusion that your software had become corrupted, and this could well be the case, since everything works on the Windows partition. Hence the suggestion to reinstall the OS.
I think you need to get a copy of the Leopard disc so that you can bring your OS completely up to date. I'm not sure of the logistics of doing an Archive and Install with both Tiger and Leopard, especially if much of your work has been done on Leopard. I'm not even sure if it's necessary to reinstall Tiger--it might be better to just reinstall Leopard using Archive and Install.
It's always a good idea to have a good up to date backup like Time Machine before attempting an Archive and Install, because things can go wrong. If they do, you may end up having to do an erase and install. If that happens, you can restore from your Time Machine backup.
I think what you should do is to get a copy of your Leopard disc, and then boot from it and try to do the Archive and Install. Navigate to Disk Utility first and verify both permissions and the disk and repair if necessary. Then proceed with the Archive and Install. Once you're done, run all the updates. Then go to Disk Utility and repair permissions.
Good luck!

Measure scan frequency using 2 e-series boards and an external clock.

I am setting up a data acquisition system in which the user has the ability to select between multiple sources for the scan frequency. The user can choose either hardware based and select the scan frequency or an external source, in this case, an encoder. When the user selects the external case, I would like to measure the scan frequency. I have a PXI chassis with 3 6071E DAQ boards. I have the encoder pulse train wired into the master board and would like to use one of the slave boards to count the pulses and measure the frequency. I based the code I developed on example code that shipped with LabView. However, when I drive the master board with a known frequency using its internal clock,
I measure 0 frequency on using the slave boards counter.
Attachments:
DAQ_3_Boards_-_State_Machine_-_Scaled_Array.llb ‏1525 KB

It sounds like you have your program setup to measure the frequency of the clock only when you are using an external source. The counter won't get an input if you are not using an external source, right? So, when you drive the master board with an internal clock, the counter will have nothing to count.

Mid 2009 applecare logic board and battery ADVICE

returning mac OS and mac hardware buyer here.
i have been questioning (read complaining) about the battery life (1 1/2 hours on safari) and the performance (spinning beachballs on startup, on wake and on starting safari among other things) since i bought this machine. i brought it in for the umpteenth time to the genius bar (they apparently only have 3 of these on record?!) because i had a break and i have a "service battery" alert.
i am being told i can replace the battery and the logic board based upon their diagnostics of the machine and i have FINALLY (Whoo-HOOO yippeee kayeeee'y!!) got a committment from a mac rep that i should be expecting 3 1/2 - 4 hours out of the battery and not 1 1/2 hours.
i don't really have an option here from everything i can tell but does anyone have any advice for me on this? warranty is up in February and from what i am being told i can bring it back if i bring it home and still only get poor battery life.
at the same time i am really unhappy (insert expletive) about having spent so much time troubleshooting this machine only to be told that the hardware seems fine or that the battery tests normal or whatever. this macbook pro 13 inch seems like it was a dog since the day i bought it.
my preference would REALLYT be to trade into mac on a new macbook pro 15" and i am wondering if i am instead i am going to have to just repair this machine (thank my lucky stars that i buy applecare) and empirically test the machine on my end to make sure that i am getting more than 2 hours per charge and that i don't have the spinning beachballs that i have had to have dealt with over the last 3 years...
i mean, i /have/ to fix this machine and monitor it over the next three months instead of them helping me cut bait with it by getting some financial incentive somehow to move into a new MBP is that right...?
TIA

thanks.
looks like it has now had a new battery and a new logic board and it is still failing hardware test for the battery.
they are now sending it out for additional testing to some other facility.
anyone had a similar experience?

HT1665 i have an apple IPhone4. I am experiencing certain problem with my iphone4. The problems are as follows a. my ear piece and proximity sensor is not working while making a call. 2. It cannot reproduce sound without earphone but rings if gets any cal

Hi folks,
i have an apple IPhone4. I am experiencing certain problem with my iphone4. The problems are as follows a. my ear piece and proximity sensor is not working while making a call. 2. It cannot reproduce sound without earphone but rings normally if gets any call.
Can any one help me in this regard??

Try to reset the phone by holding the sleep and home button for about 10sec, until the Apple logo comes back again. You will not lose data by resetting, but it can cure some glitches after installing new software or apps.

Having logic board and inverter replaced - will post results.

My MBP is afflicted with the CPU whine and the LCD whine, not to mention the "Moo". I solved the Airport not connecting automatically issue on my own.
Talked to Apple about the whines, they wanted me to take it to the local guys, which I was happy to do. I dropped it off this morning, going to pick it up after work.
They are ordering me a replacement logic board, and the inverter (at my request). I will keep my MBP until they come in and then they will swap the new parts in.
I'm guessing it won't be a short wait for the parts, but I will follow up in this thread detailing further results and noise levels.
Personally, I am very impressed with the local service response. They agreed to get the inverter at my request even after opening it up and finding the noise to all eb coming from the logic board.
I know it ***** to wait... but there is more to come. Any questions about my specific machine, etc; post and I will answer.

BrenM - Good luck with your MBP! I hope the replacement logic board and inverter resolve the issues.
As for me, my MBP has been at an Apple Authorized Service Provider in Oakville, Ontario for about a week and a half. They first ordered a replacement logic board, which came from California ... took 2 or 3 days. Unfortunately the replacement logic board did not resolve the high-pitched "whine" issue. The tech told me it is quieter, but not gone .... So on Monday he advised me that they are replacing the inverter, which is on order. They expect to receive it on Wednesday. To be honest, I don't think the inverter will address the high-pitched "whine", as I've been following this issue on here very closely. But it probably will resolve the buzz from the screen when adjusting the brightness, so that's good.
The ASP that I took my MBP to in Oakville has been great. They're really on the ball with it and I know they are doing the best they can. But what it really comes down to is ... if Apple doesn't have an issue to this high-pitched "whine", there's not much the ASP can do. I appreciate them replacing the logic board and inverter, but it's really Apple that needs to get their act in gear and resolve this once and for all. The MBP's have been out for what ... 5-6 weeks now? This has been a hot topic ever since people starting receiving their MBP's, and Apple needs to face the fact that people are not going to let this go until a solution is provided.
The ASP told me that if after replacing the inverter it is still not resolved, I'll need to put up with it until Apple resolves the issue, as there's nothing else they can do. I asked him - what if it takes Apple 2-3 months to resolve the issue? He said I can bring it right back in to have it fixed. So that's good.
The other thing I was considering is when I get my MBP back, to contact Customer Relations and put up a fuss to receive a replacement. But ... then the replacement will probably have the high-pitched "whine". I don't know what to do at this point. It sort of bothers me that my $3000 MBP is no longer pristine, as it has been serviced and received replacement parts ... what do you guys think? Should i be firm with customer relations and (politely) demand a repacement?

Compatibility between MSI i7 boards and Corsair DDR3 RAM kits?

Similar issues from other posters: Thread 1, Thread 2
Are there any known compatibility issues between MSI's Intel i7 boards and Corsair's 1600 DDR3 triple-channel kits?
My brother's machine (which has been discussed here before last time I tried to fix it) is still having trouble, and also uses the same type of RAM as the two threads above. The symptoms are:
1) Occasional lockups, followed by a reboot
2) Inability to POST: the machine will try numerous times, rebooting each time (as in threads 1 and 2), followed (eventually) by the POST saying "the previous overclocking has failed and the BIOS is reset to default settings" - as in thread 1. The machine will then (normally) boot. Reducing the RAM speed increases the chance of a successful boot, but the settings don't stick (presumably they are wiped when the BIOS is reset to the default settings). Cold boots (after the machine has been switched off overnight) tend to be the most likely to fail.
Any ideas what could be causing this, if not an incompatibility with the RAM (in 3-channel mode)? Dropping down to one stick stabilises the system, but at the expense of dropping to a mere 2GB of RAM.

Quote from: HU16E on 06-September-09, 15:10:01
Out of seven MSI X58 boards, none had a problem with Corsair sticks. With the 1600's running at 1066, they should only require default (1.50v) auto voltage. They should also work using settings of 1N 9 9 9 24 without issue. As the CPU IMC only natively supports 800/1066, your particular CPU may have a limitation of working any higher. But, something is not right within the system if it will not run the RAM at 1066. To rule out a bad stick, test with just one in the black A0 slot, & swap it out & test the other two individually. As far as DRAM voltage, if all the sticks check out ok, try raising it to 1.55V. Keep the forum updated on your progress.
Added: Make sure 'Spread Spectrum' is disabled in bios Cell Menu, as well as 'Extreme Memory Profile' if your bios has it listed.
Are they 2GB sticks? (All the threads in question use the 2GB sticks - one 3×, and one 6×)
Back around the time I tried the BIOS flash as the solution, I Memtest86'd each of the sticks individually in the MSI-recommended slot for a single-stick configuration, and each tested perfectly. Part of the advice given at the time was to disable XMP and Spread Spectrum; they already were.
Whilst I can't be certain that the RAM is the problem, at least three threads on this board now are using 2GB Corsair 1600 sticks and having strikingly similar symptoms...
I'll try investigating the voltages later today. Thanks!

2x iMac G5: Both Logic Board and Display Problems, Warrenty?

Hello,
Thank you for looking at this topic.
I am Jeroen from The Netherlands and proud owner of several Mac Mini's, iMac's and Macbook's. I have 2times the iMac G5, a beautiful machine, but both not working since 2 months.
I have two times the iMac G5 with iSight, both have logic board and display problems.
The first iMac doenst start at all, black screen, i hear the chime, but nothing happening. After a minute i see one horizantal white stripe but nothing happens.
The second iMac has weird horizantal stripes also, but the computer starts. It gives a finder and questionmark icon. After a while the fans go crazy.
Both these symptons are widely known on the internet. I would like to get this fixed, but prices are crazy. And because this is a common issue I would expect to get this fixed for no costs. I have contacted several Apple resellers but they shown me high prices and bad services. On these forums I've saw people in the USA who get this fixed free of charge.
Does anyone has any advice for me? I'll call apple USA this morning.
Thankyou for ur time.

Welcome to Apple Discussions.
I know of no repair extension authorization which provides for the repair of either computer you describe beyond its original 12 month period of coverage. If either machine is covered by a warranty extension program provided by AppleCare, then the parts, labor or both required to replace the defective components may be offered at no charge to you. Final determination of eligibility is made at the part level by authorized Apple service providers or dealers and by the specific serial number of the machine submitted for service.
Absent a warranty extension, however, it is quite likely that you will have to pay for the repairs is you elect to have them performed.

IMac G5 (2004) logic board and the repair extension program

Hi,
I know that there are tons of topics about logic board/power supply troubles witht the first generation G5s, and I'm sorry to start yet another new thread, but I still have some questions about this issue.
I have a first generation iMac G5. Long story short...when I first got it the computer would shut itself off sometimes after I had put it to sleep. When I would try to restart nothing would happen, but usually letting it sit unplugged a while would solve the problem (occasionally when I'd restart a different start up noise would sound and the white light would flash quickly). It happened so randomly, that I just lived with it, blaming the problem on my dorm network, or a power failure. A few days ago I tried to start the computer up and nothing happened (just a VERY faint sound like a clicking or ticking or intermitant humming...definatly electrical sounding). I unplugged it overnight, but the next day still nothing. I decided to go through the troubleshooting steps Apple lists online. The internal power button could not start it up and the second LED does not flash, which according to Apple means the logic board needs replacing. Luckily my serial # is covered by the Repair Extension Program, and I'm bringing my computer in tomorrow morning to be fixed (just in time for back to school).
I have become concerned, while browsing the discussion topics, that this fix may not be permenant. I've read a few posts that claim that they are on their third Logic Boards, and this kind of scares me. My parents bought me the computer (our family's first ever Mac) and did not purchase the AppleCare extended warranty (they had heard how reliable Macs were...hmmm.) I didn't even know that I could purchase AppleCare after-the-fact until it was several months after my 1yr warranty expired. I do appreciate the fact that Apple recognized what seems to be a common problem with this generation of iMacs, but I wonder why they did not contact the owners of these machines to let them know that the problem and repair extension even existed.
So I guess my real question is...Does anyone know if, after this repair Apple will replace the logic board if it dies again? Is there a limit to the number of qualified repairs you can get through this Repair Extension program? Also is there any other Extended warranty type thing I can purchase after my 1yr. warranty is up.
Sorry the post is so long...I'm just scared about the fate of my beloved Mac.
iMac G5 (2004) Mac OS X (10.3.9)

Oh man, am I actually relieved reading this thread. Just took my baby (iMac G5 first generation) in for repairs today, not knowing what was wrong with it. Luckily my serial numbers are in the range, so I'm crossing my fingers that they're going to cover this.
Brief synopsis of what happened, in case it differs from anyone else's
About a month ago, my iMac started to not wake up from sleep mode. Instead of waking up, it would just shut itself off. This continued for about 2 months, with me thinking nothing of it. Then, instead of shutting itself off, the computer would restart when I attempted to put it to sleep.
Then, last night, I was surfing the net and all of a sudden the power just failed. No noise, no "grey screen", we're talking like a millisecond later the screen was black. I treid unplugging the machine and then plugging it back in while simultaneously holding the power button to reset the PSU and still nothing. At that point it was about 1:30 in the morning, so I just went to bed not wanting to deal with it until the next day. By the time I woke up, there was a distinct smell of electrical components burning (in grade 8 shop class we used to hook up resistors to the voltage generator and crank the juice up until they fried when teach wasn't around, so I distinctly remembered the acrid stench :P)
I opened the back up and did the LED check, and #2 wouldn't even blink. So I took it in and they said they'd have to get back to me and that's where I stand now.
The thing that concerns me is that if some of the components fried that there may be possible damage to the motherboard etc. Luckily I'm not too worried about the hard drive because it did still boot up and all. People that have experience with this, what usually happens with files on your HD after a logic board replacement? Are they usually fine?
The other thing that concerns me is that apple has made no effort to contact me, and it will be 2 years after the purchasing date come November 1, 2006. I'm lucky that I caught this now before it was too late.

Where can I buy an inverter board and cable for my iMac 24 (mid 2007)

Where can I buy an inverter board and cable for my iMac 24 (mid 2007)

See clues here in the last post...
http://forums.macrumors.com/archive/index.php/t-869303.html
Laughably expensive, but part#s may help searching...
http://www.welovemacs.com/im24lcdresc.html
iMac 24" LCD Panel w/ Inverter Board and Gasket (p/n 1001349)
24" iMac LCD Panel w/ Inverter Board and Gasket (p/n 1005316)
24" iMac LCD Display Panel (p/n 1004596)

Hi When going from Develop module to print module a white boarder appears on screen which also prints via my epson r3000 printer. I can get round this by exporting photo to Elements and printing from there but can i get rid of the boarder and print from l

Hi When going from Develop module to print module a white boarder appears on screen which also prints via my epson r3000 printer. I can get round this by exporting photo to Elements and printing from there but can i get rid of the boarder and print from lightroom?

In the printer driver (accessed through the Page Setup button) set the Advanced tab to borderless. Then in the right hand panel under Layout set all the margins to zero.

Flash Drive not mounting, shows up in sys. prof. and USB Prober

I have a 4Gig Flash Drive that doesn't mount. It shows up in both SYstem Profiler and USB Prober. Is there any way to "fix" it? I don't need to recover any files - I just want to be able to use it.
It used to work, maybe a year ago. Havn't touched it since.
The port is just fine, it's definitely the drive.
Thanks for your time!

it doesn't show up in disk utility. unless there is a way to force mount it, disk utility can't help.

4472 DSA board and Proximity probe

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