Measurement Computing MCC Board

I'm trying to use a MCC board PCI-DAS6071. I tested the board with some test programs, it works ok. My main program has nothing to do with the MCC board, I'm trying to integrate the board into my main program. My problem is, with or without the board integrated, once my program is run, it will make the board not workable. I will have to restart the computer to make the board work again. I contacted Measurement Computing but couldn't get much help. The tech support there is impatient and not very willing to help. Because this is not NI hardware, I couldn't get support from NI either. I'll attach my main program here. If anyone happens to have the expertise to recognize how the program set something to make the board not work, point it out for me and I will be very grateful. Sorry, I couldn't attach all the subVIs, there are just too many.
Thank you in advance.
Guangde
Attachments:
Repeat Break In 080319.vi ‏1859 KB

Hi Guangde,
Unfortunately to say, in the current state, this VI would be nearly impossible to diagnose. You may want to rebuild this VI from scratch.. break down your code and try to see which portion is creating this behavior. Also, your code is unusually large. We suggest that VIs be able to fit into one monitor page, and if not, break down the VI into subVIs and implement modular programming. You do not need to have wires spanning across multiple screens, as this not only lengthens development time, but debug time as well.
With these tips, it may let you debug your original code.
I'm sorry, this is probably not the answer you are looking for, but without the hardware and the subVIs, this VI is very difficult to troubleshoot.

Similar Messages

Measurement Computing DAQ Boards and LV

I have been using LV and NI DAQ boards for several years with
excellent results. Goodby C++ forever (well...).
My boss sent me a flyer for Measurement Computing DAQ Boards and the
prices are great. They even offer a card I can't get from NI.
My question is: how well do these boards work with LV? Can I use all
the NI supplied VI's or must I use only the ones provided with the
Measurement Computing card?
Does anyone sell a card that clones a NI card so all the NI VI's work?
Thanks,
Linuz

Here's an opinion from somebody who doesn't work for NI also...
The measurement computing boards are technically very good, and also very
inexpensive. However the last one (a multifunction DAQ card, I forget the
model number) definately suffered from the SW differences you describe.
I already have enough difficulty getting the NI cards to work properly; for
a complicated project I wouldn't want to add a 3rd party card to the mix!
Usually it's worth a couple hundred bucks to have the full NI-DAQ driver,
support with NI-MAX, standard NI vis, and technical support if (when) the
whole system doesn't work as documented. I have had enough trouble using
RTSI synchronization between genuine boxed NI products. For an ambitious
project I would rarely consider a 3rd party DAQ solution.
On the other hand, if your application is straightforward and you like the
cost savings then go for it. When I tried the computerboards card, the SW
was lackluster but functional. The HW was very solid and around 1/3 of the
price. Given that Labview PDS is so freaking expensive, I would definately
consider a 3rd party board for routine tasks. I had a fine experience with
the computerboards card and the approx $500 savings (at the time) made the
project affordable.
-joey
"Greg McKaskle" wrote in message
news:[email protected]...
> > I have been using LV and NI DAQ boards for several years with
> > excellent results. Goodby C++ forever (well...).
> >
> > My boss sent me a flyer for Measurement Computing DAQ Boards and the
> > prices are great. They even offer a card I can't get from NI.
> >
> > My question is: how well do these boards work with LV? Can I use all
> > the NI supplied VI's or must I use only the ones provided with the
> > Measurement Computing card?
> >
> > Does anyone sell a card that clones a NI card so all the NI VI's work?
>
> Any board can work with LV provided it has a driver to control it or you
> are ready to do peeking and poking to the board. Ideally it will also
> have the DLL calls into the driver wrapped into some VIs for easier use
> by LV users.
>
> Measurement Computing does have drivers, and you can purchase LV VIs for
> their cards.
>
> Before I go on, remember that I work for NI, so feel free to get another
> opinion or look into it yourself, but you will see a BIG difference in
> the SW support for boards from various manufacturers. NI provides lots
> of SW tools, VIs, and tech support, and that is reflected in the price
> of the boards. If a company sells the same board for less, they may be
> providing less in the SW and support side. You and your manager will
> have to determine the overall price of the project based upon your time
> spent installing, troubleshooting, writing VIs, and the price of the HW.
>
> As for a company making a clone of our HW so they can redistribute our
> driver? That has happened in the past, but to my knowledge no boards on
> the market currently do that.
>
> Greg McKaskle
>

DasyLab spurious crashing - Measurement Computing USB Pods ?

Hi Team.
Am running a DasyLab (V12) program which accesses a pair of Measurement Computing USB Pods.
The intention is to run a research lab instrument continuously - 24/7 so to speak.
The system is essentially fine, and can run perfectly for as long as say 24 hours, but then halts with a" Sampling Error " stock message
referring to loss of visibility of one of our USB pods.
We are using a sensible and conservative timebase.
Now I do realise that we may be experiencing inductive interference in our control pathways.
The machine is ultimately a high voltage and high current distributed lab assembly.
We are paying good attention to good engineering practice and managing ground and earth returns as best we can.
The USB pods are quite some distance from the PC but we are using active drive USB cabling certified to the distance ( appx 15 m )
The PC is clean and not overburdened.
Any insight or similar experiences would be welcomed.
Thanks
Jack Sprat

You have provided insufficient information to diagnose a problem.
There is an updated MCC-DRV 12.1 on the Measurement Computing web site.
You should also be running the DASYLab 12.0.1 service pack update.
You should also be running a recent version of instaCal and the Universal Library (V6.23 or later, 6.25 is the current release).
For a 24x7 application, you have to agressively turn off power management. Microsoft does not configure your Windows computer for 24x7 operation.
You have to determine which USB hub your device is connected to (not that easy for the ones that use the HID driver), and disable power management. With the exception of allowing the screen to blank, you should not have any power management enabled... don't let the hard drive sleep, don't let the CPU sleep, and whatever else, don't let Windows put the USB hub to sleep!
- cj
Measurement Computing (MCC) has free technical support. Visit www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.

External clock LabView crash with Measurment Computing board.

Hi,
I'm using a Measurment Computing PCI-DAS6402-16 board with Labview (using Universal librarys VIs) in a 4-stroke engine DAQ application and amognst the signals obtain Internaly clocked, there is In-Cylinders Pressure signal which is timed with a Crank-angle deocoder sending analog pulse signal.
Although there seems to be no problem while the motor is running, it appears that when to external clocked signal is not getting any pulses (while the motor is not running) then Labview stops to respond and awaits for the external clock to start, and that doesnt happen within 10s then it crashes.
I dont know whether it is Software problem (because external and internal clocked signals are both in the same WHILE LOOP) or if it is a Hardware problem (because With a NI card there seem to be no problems).
THNX in Advance

Well it couldnt be a more typcal windows crash:
If a channel is externally timed with an analog pusle signal, If the VI starts running but the external clock isn't then:
-Labview stops to respond to any clicks (there is no .exe at this point) but it keeps working though (That i know cause if i start the ext. clock at this point it "un-stucks' and starts working)
-But, if for some secs no ext. pulse signal is generated then labnview app stops respondin and i get the typical 'send error report' window.
Could it be that the Universal library for Measurment Computing boards haw a bug? Cause the same thing happens with the "Analog input External Clock.vi" example given with the Library..so it can't be my mistake..or can it?!

Measurement Computing DAQ cards

Hello everybody,
is anybody out there having experiences with DAQ cards from Measurement Computing? Especially the PCI-DAC670x series?
1) Are they really compatible (one2one replacement seen from the output connector) with cards from NI?
2) Is the Universal Library a stable software solution?
Any comments on these cards?
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

I am using a multifunction DAQ card and a analog out card. I have had no problems using the MCC Labview drivers, but there was a bug in build 550a when using the NI Labview drivers with the MCC boards. There was a memory leak, and I was told that it would be fixed in the next build. I have not checked to see if that is true yet.
I can't say if there is a one-one relationship with the connector, but logicially and electrically, I was able to use the MCC DAQ card the same way I was using an NI card.
In conclusion, using the card with the MCC Labview functions is safe and stable, but I can't say that you can use them reliably with the NI DAQ functions. I have always heard from other users that the hardware is as good as the NI products, and I have had no problems with that. Tech support is decent, also.

Measurement computing USB-QUAD08

Hi,
Does anyone out there have any experience with Measurement Computing USB-QUAD08 board? I normally stick with NI DAQ only, but I was looking for a USB DAQ with 8 timer/counter channels and that's the only one I could find.
I'm trying to measure the period of a digital PWM signal. Specifically I want to capture 50-500 consecutive pulse periods into an array (measure period between falling edges) which are 100-10000us in duration.
At any rate, the example from their website (attached) utilizes .net references, which I am not familiar with, does not seem to do what I need.
If anyone out there has worked with this device and would like to modify the attached VI to accomplish what's needed, I would greatly appreciate your help.
-martin
Attachments:
Period Mode Scan Mode_v1.vi ‏33 KB

I don't have any experience with the module you listed, but I do use USB-1208 quite a bit. Have you tried using the labview vi's that come with the device?
Reese, (former CLAD, future CLD)
Some people call me the Space Cowboy!
Some call me the gangster of love.
Some people call me MoReese!
...I'm right here baby, right here, right here, right here at home

Ayuda de codigos ejemplos para usb-1208fs fabricante measurement computing

Estimados acabo de comenzar a trabajar con una tarjeta modelo USB-1208FS del fabricante measurement computing. Me pueden ayudar con algunos codigos ejemplos en Labview 8.5 donde se esten usando la mayoria de sus canales DIO y AIO.
esperando que me puedan ayudar.
Slds.
JRPS

¡Hola! Bienvenido a los foros.
He visto algunas discusiones en estos foros acerca de la placa que estas utilizando: aquí una lista de argumentos que pueden serte de utilidad. Modoficando los criterios de búsqueda puede que encuentres algunas otras discusiones. Desafortunadamente no puedo darte indicaciones concretas ya que nunca he utilizado estas placas
Sin embargo, te informo que esta tabla está dedicada al Labwindows/CVI, un lenguage C de NI: si quieres poner preguntas sobre el LabVIEW debes de acudir a la propia tabla. Igualmente te informo que si quieres seguir hablando español puedes acudir a la tabla de la comunidad en este idioma: en las tablas internacionales es mejor utilizar al inglés ya que habrá muchos que puedan contestar a tu preguntas.
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

Set idle voltage with measurement computing

I am working on a project that does valve control and when the program ends I want the valves to close, by setting the Analog output to a constant value. I am using a USB-3101FS currently. I saw a post on setting idle voltage with DAQmx channel properties, but I was not given the same options because I am using measurement computing devices.
Edit: here is what I am curerntly working with. It is very early design
http://imgur.com/GaSaxaY

We were all new once. If you are interested in learning more here are some free tutorials.
3 Hour Introduction http://www.ni.com/white-paper/5243/en/
6 Hour Introduction http://www.ni.com/white-paper/5241/en/
LabVEW Basics http://www.ni.com/gettingstarted/labviewbasics/
Self Paced training for students http://www.ni.com/academic/students/learn/
Self Paced training beginner to advanced, SSP Required http://sine.ni.com/myni/self-paced-training/app/main.xhtml
LabVIEW Wiki on Training http://labviewwiki.org/LabVIEW_tutorial#External_Links
So a few things. First your program runs, and it runs once and will be done after the last item finishes executing on the block diagram. Turn on highlight execution to see it run (the little light bulb on the block diagram). This is not how most programs go. Generally a user wants to be able to interact with the UI and have it change values as they change them. To do this you need your program to run in a loop until a condition is met to cause a it to close. This is where our friend the while loop comes in. The while loop can keep the program executing until a stop condition is seen. The easy method is to create a button on the front panel, then wire it to the stop condition of the loop and now your program continues to run until you press stop. After your loop is done executing is where you can have some closing steps to set your output to 0.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

Measurement Computing USB-SSR24 error 42 Digital Port not configured correctly for requested operation

Using LV 2012 and ULx 2.02 LV driver:
LV is throwing an error 42 (Digital Port not configured correctly for requested operation) from the ULx write VI but only on PortCH. All my configurations are correct on the hardware and Instacal tests the ports OK. I've reinstalled everything and still see the same issue.
Since PortA is configured identical to PortCH, and PortA is functioning fine, I'm stumped. This is occuring on two different SSR24 DAQs so I don't think it's the hardware, plus I've already mentioned that the Instacal isn't having a problem with it.
I've attached my VI I'm using for debug.
Jeff
Attachments:
test of Wilmington.vi ‏19 KB

I worked with Measurement Computing and they agreed that there is a bug with certain DI/DO configurations. There are a possible 16 different DI/DO configurations with the hardware and apparently mine (PortA - DO, PortB- DI, PortCL-DI, and PortCH-DO will throw this error for PortCH. I'm currently using .net calls to work around the issue until the ULx driver is updated. I'll post that when I see it. Attached are the .net VI's that I'm using for simple static IO.
Attachments:
USB SSR DOT NET Write Bit.vi ‏20 KB
USB SSR DOT NET Read Bit.vi ‏21 KB

How to measure a VXI board's thermal / air flow performance?

I am looking for information on requirements and testing procedures as they relate to the VXI bus and cooling. Specifically, I would like to make some temperature measurements on some VXI cards to see if the increase in airflow temperature (temperatuer of exhaust minus temperature of intake) is within 10 degrees C.
Quite a few documents reference a document called VXI-8 (Cooling Characterization Methodology Specification). I have not been able to locate this document. Would you happen to have it?
Also, any information you can provide on the best procedures for measuring temperature drop, pressure drop, air flow, etc. across a VXI card would be much appreciated.
Thank you.

Thanks. But the document didn't really answer my question. Perhaps an example would be better.
The NI VXIpc-872B embedded controller, for example, has an ambient operating range of 5 to 50 °C. What exactly does this mean?
If you were performing a test to determine if the temperature of the VXI card is being exceeded, how would you do it?
Let's say you installed the controller in a VXI chassis (with integral cooling fan), put the chassis+card in an environmental chamber, and turned the unit on. One thermocouple measures the temperature entering the card (at the bottom), while another thermocouple measures the air temperature exiting the card (at the top). The chamber temperature's setpoint can be varied up and down.
In this example, would the intake air temperature (i.e. air temperature entering the bottom of the card) have to be less than 50 °C? Or would the exhaust air temperature (i.e. air temperature exiting the top of the card) have to be less than 50 °C? Or does it mean the surface temperature of any component on the board must be less than 50 °C?
Thanks,
Michael

Measurement Computing USB-DIO96H driver issue with Labview 2012 SP1 on Windows 7 x64

Is anyone else having issues with measuremetn Computing's USB-DIO96H driver in Labview 2012 SP1. It throws warnings in Labview when loaded that are unresolvable as you can't save to the DLL driver file. Also it regularily crashes Labview randomly. I am not impressed with their driver. Anyone have any suggestion other than replacing with NI-DAQ solution, which I am working on?

I've taken a look and I don't see any drivers available for that device on ni.com. There are two potential workarounds that would both involve building your own driver:
1. Write a LabVIEW application that calls functions on the DLL you downloaded from Measurements Group
2. Write a LabVIEW application that addresses the device using NI-VISA and serial communication.
Some resources if you choose to go down that path:
http://www.ni.com/devzone/idnet/development.htm
http://www.ni.com/white-paper/3271/en/
http://www.ni.com/white-paper/3009/en/
Hope this helps!
Rob B
FlexRIO Product Manager

Finite Measure with 2 boards 6602 and 6 DMA Channel Counter Buffered - error 200141

Hi all,
First .. I'm a beginner with LabView and I hope to explane myself in good way cause I'm italian..
I red all the post about the error 200141 and check the suggested solutions (also the way to ignore the error), but I want try to ask for a differet one..
What i'm trying to do is to aquire 6 encoder, 3 on the first board PCI 6602 and 3 encoder on the second board on DMA channels.
The encoder generate 90000 X4 = 360000 pulses x revolution and the max speed rotaion is 4 RPs.
Cause I need to store in a bin file all the pulses from the encoders, i generate a trigger of 1.5 MHz to get all the samples at the max system speed (360000 * 4 = 1440000 pulses x sec).
I think to have reached the limit, and maybe is not possible do better.. actually the 2 PCI 6602 works with 1,0 MHz of trigger and the system store in 6 files 4000000 of samples during
the finite measure of the angular position on 6 channels.
The trigger is not yet sync between the 2 PCI cause I'm waiting for a RTSI cable to put in the PC...
In Your opinion is possible to find a alternative way to acquire these encoders ?..
Thanks

I also doubt if you need to capture every single increment from each encoder. I'll discuss this more below.
Further, many earlier discussions suggest that counter tasks can sustain data transfers merely in the 100's of kHz, with *maybe* a possibility under special circumstances to slightly exceed 1 MHz. Your boards have very small hardware buffers (either 1 or 2 samples worth), causing the PCI bus usage to be very frequent and therefore less efficient.
Now, let's go back to your sample rate. You've got encoders which suggests that you're dealing with a physical system. Physical systems have inertia, which limits their useful bandwidth. In my experience, it's quite unusual to care about motion artifacts beyond the 10's of kHz. The inertia just doesn't allow anything significant to happen at that rate.
So, if the physical bandwidth of your motion system is, say, 5 kHz, there's a rule of thumb suggesting to measure at 10x when possible. So that'd mean 50 kHz sampling. 50 kHz x 6 channels on the PCI bus may be possible. Multi-MHz sampling won't be.
Can you describe the physical system a bit?
-Kevin P.

HT1222 My Computer memory board was replaced now itunes dont show mu music that was in itunes but are on my i pod how do recover my music list

i had a music list on i tunes now i have none i had to replace memory board after replacement i loss my music i had how do i recover my music

From the backup you regularly made of all your files on the computer.
Some of the information below has subsequently appeared in a document by turingtest2: Recovering your iTunes library from your iPod or iOS device - https://discussions.apple.com/docs/DOC-3991
Your i-device was not designed for unique storage of your media. It is not a backup device and media transfer was designed for you maintaining a master copy of your media on a computer which is itself properly backed up against loss. Syncing is one way, computer to device, updating the device content to the content on the computer, not updating or restoring content on a computer. The exception is iTunes Store purchased content.
iTunes Store: Transferring purchases from your iOS device or iPod to a computer - http://support.apple.com/kb/HT1848 - only media purchased from iTunes Store
For transferring other items from an i-device to a computer you will have to use third party commercial software. Examples (check the web for others; this is not an exhaustive listing, nor do I have any idea if they are any good):
- Senuti - http://www.fadingred.com/senuti/
- Phoneview - http://www.ecamm.com/mac/phoneview/
- MusicRescue - http://www.kennettnet.co.uk/products/musicrescue/
- Sharepod (free) - http://download.cnet.com/SharePod/3000-2141_4-10794489.html?tag=mncol;2 - Windows
- Snowfox/iMedia - http://www.mac-videoconverter.com/imedia-transfer-mac.html - Mac & PC
- iexplorer (free) - http://www.macroplant.com/iexplorer/ - Mac&PC
- Yamipod (free) - http://www.yamipod.com/main/modules/downloads/ - PC, Linux, Mac [Still updated for use on newer devices? No edits to site since 2010.]
- 2010 Post by Zevoneer: iPod media recovery options - https://discussions.apple.com/message/11624224 - this is an older post and many of the links are also for old posts, so bear this in mind when reading them.
Syncing to a "New" Computer or replacing a "crashed" Hard Drive - https://discussions.apple.com/docs/DOC-3141 - dates from 2008 and some outdated information now.
Copying Content from your iPod to your Computer - The Definitive Guide - http://www.ilounge.com/index.php/articles/comments/copying-music-from-ipod-to-co mputer/ - Information about use in disk mode pertains only to older model iPods.
Get Your Music Off of Your iPod - http://howto.wired.com/wiki/Get_Your_Music_Off_of_Your_iPod - I am not sure but this may only work with some models and not newer Touch, iPhone, or iPad.
Additional information here https://discussions.apple.com/message/18324797

Current loop measurement and DAQ board

Hi.
I want to acquire some values coming from sensors outputting a 4-20 mA signal.
I designed a solution with SCXI-1125 and E series card.
In other side, somebody -from NI- gave me a price offer with just E-Series DAQ card and a connecting board with resistors (and thus measuring Voltage). I can understand this solution (when the range are compatible).
So, can you explain me what are the benefits if I choose the most expensive solution (SCXI + E-series)compare to the cheapest one (E-series + resistor)
Thanks a lot.
SB.

Basically, the SCXI solution would provide a known level of accurracy and reconfiguration is much easier.
If you used a resistor network to convert the currents into voltages, you would be able to measure these voltages with your E-Series DAQ card with no problem. However, in order to convert these voltages back into the original currents you would have to apply scaling within MAX. This would require that you know each of the resistance values. Since many resistors have a slight tolerance, each resistor would likely have a slightly different value and need to be measured individually. The resistors could possibly change value over time or depending on the environmental temperature.
The signal conditioning solution, on the other hand, can provide you with a
known level of accurracy based on the specifications of the modules used. Additionally, if you ever required a change in your design you would only have to modify the configuration in MAX and no hardware changes would be needed since newer SCXI modules are software configurable.

Measurement Computing or NI, that is the question!

Well actually its not a question anymore.
http://www.measurementcomputing.com/press_release.asp?pr=55
NI has purchase MC.
Is there anyway for me to go back and edit all of those posts were I said using NI stuff lead to faster devlopment than using MC?
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Solved!
Go to Solution.

Ben wrote:
Is there anyway for me to go back and edit all of those posts were I said using NI stuff lead to faster devlopment than using MC?
Well, that is probably still true .
Similarly, the the MCC web site still keeps making their side-by-side, punch-by-punch comparisons with competing NI products.
Message Edited by altenbach on 04-30-2005 11:41 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
NI-MCC.gif ‏46 KB

Measurement Computing MCC Board

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