Using BNC 2110 with PCI 6229

I am using BNC 2110 on connector 1.
What are the terminal name equivalences for the M Series device 6229?

On connector 0:
EXTREF -> Not connected
CTR0 OUT -> PFI12
FREQOUT -> PFI14
AI HOLD COMP -> PFI11
EXTSTRB -> PFI10
CTR1 OUT -> PFI13
Rest should be as lebeled
On connector 1:
ACHX -> ACHX+8
EXTREF -> Not connected
CTR0 OUT -> digital P0.28
CTR1 OUT -> digital P0.29
PFI0 -> digital P0.16
EXTSTRB -> digital P0.26
FREQOUT -> digital P0.30
SCANCLK -> digital P0.23
This list may not be complete
For details compare the connector of an E-Series device with the connector of an M-Series device:
M-Series Help
http://digital.ni.com/manuals.nsf/websearch/9477D6DF1FE5A72986256FAB00633DE4
E-Series Help
http://digital.ni.com/manuals.nsf/websearch/05A25C65C755D8DB86256FD30081687DMessage Edited by Peter Schlosser on 04-26-2005 06:32 PM
Message Edited by Peter Schlosser on 04-26-2005 06:32 PM
Peter Griese
NI

Similar Messages

Impedance of BNC 2110 with PCI 6713

Dear NI Engineers
I'm using the Counter/Timer input channel of BNC2110 terminal block with PCI-6713 board to generate waveform according to the external TTL signal.
By the way, I want to know the impedance gain of Counter/Timer input channel of BNC2110 with PCI-6713.
I'm looking forward to getting the answer.
Thank you.

On connector 0:
EXTREF -> Not connected
CTR0 OUT -> PFI12
FREQOUT -> PFI14
AI HOLD COMP -> PFI11
EXTSTRB -> PFI10
CTR1 OUT -> PFI13
Rest should be as lebeled
On connector 1:
ACHX -> ACHX+8
EXTREF -> Not connected
CTR0 OUT -> digital P0.28
CTR1 OUT -> digital P0.29
PFI0 -> digital P0.16
EXTSTRB -> digital P0.26
FREQOUT -> digital P0.30
SCANCLK -> digital P0.23
This list may not be complete
For details compare the connector of an E-Series device with the connector of an M-Series device:
M-Series Help
http://digital.ni.com/manuals.nsf/websearch/9477D6DF1FE5A72986256FAB00633DE4
E-Series Help
http://digital.ni.com/manuals.nsf/websearch/05A25C65C755D8DB86256FD30081687DMessage Edited by Peter Schlosser on 04-26-2005 06:32 PM
Message Edited by Peter Schlosser on 04-26-2005 06:32 PM
Peter Griese
NI

Are there any DAQmx examples available for use with pci 6229 M series card?

I have been searching around for examples which work with the pci 6229 M series DAQ card. Most examples do not list this card as applicable and the one I have found gives an error. Is there anywhere specifically available, what I am particularly interested in is seeing an analogue channel being triggered by another analogue channel reaching a certain value.
Thanks
Kevin

Hi Kejoglo,
You are right in the fact that the M-Series card is newer than LabVIEW (and therefore the examples that are shipped with it) and therefore the example finder doesn't list the M-Series cards in the list of available hardware.
Basically though, the M-Series cards work with DAQmx and not Traditional DAQ so if you just go into the example finder and search under Hardware Input and Output>>DAQmx and choose an example from that folder to run on your M-Series card. As long as you don't try to do anything outside of the specifications of your card (which I doubt you will do) then you shouldn't have any trouble running any of the DAQmx examples on an M-Series card.
Hope this helps, if you still have problems then please feel free to write back.
Best regards,
Peter H
Applications Engineer
National Instruments UK

Continuous in- and output with PCI-6229

Hi All,
I'm currently evaluating a PCI-6229 card on RTX (and maybe InTime later on). The main goal of the evaluation is to prove we can get hard real-time, deterministic behaviour from this system in order to use it to replace our current DSP-based solution.
To do so, I'm setting up a rather simple program that should
- continuously acquire 1 channel @ 20kHz
- have a processing loop of 5mSec, ie 100 samples; this loop should be entered every 5mSec as exactly as possible
- do some simple processing in the loop (thresholding the signal)
- bring out the result on an analog output (low signal if signal is under threshold, high signal for all samples above the threshold)
I could get the basics working pretty quickly: continuous input, continous output, continuous input with dma, input using interrupts.
Trying to combine everything isn't really working out however.. Normally I'd try and try until knowing the device inside-out but now I have a rather strict timeframe so hopefully someone here can provide some insight.
Questions:
1. For the input, I can get an SC_TC interrupt each time one frame is scanned. I measured this on a scope by toggling a digital output on the card, and there's no noticable jitter on the squarewave which is a good sign.
However I'd like to combine this with DMA, but the DMA is lagging a bit on the interrupt so I end up having to poll the DMA after all in the ISR, so there's no use using the interrupt in the first place.
Is there a way to set up continuous DMA servicing and get an interrupt from the DMA system itself after 100 samples are transferred?
2. For the output, I cannot get continuous mode working with DMA, only by writing to the FIFO manually. I can preload a couple of frames with the dma, but after calling aoStart(), tDMAChannel::write() works once, but all calls afterwards return kBufferUnderflow. Any ideas?
I probably have to check when exactly to write to the DMA, but I have no idea which of the many status functions to use. Tried with AO_Status_1.readAO_FIFO_Half_Full_St() but that's not it. tried to write it on each UC_TC interrupt but that didn't work either.
3. DMA is, to my understanding, a more performant way of getting samples into the host and doesn't require to call AI_FIFO_Data.readRegister() in a loop and vice-versa for the output side. But are there really benefits in using DMA?
4. I made a basic program to bring everything together the simplest way possible: preload 100 samples in the output FIFO, start analog input, start analog output, have the ISR copy all values directly from input to output FIFO.
Putting both analog signals on a scope, I expected to see the input and about (see question5) 5mSec later the same signal on the output, with no jitter.
However what I see is the output is just floating around, in other words there is no fixed delay between output and input! How is this possible? I use the same divisor for in-and output. Is there any sample code available that achieves what I want?
5. Is there a way to start both input and output at the exact same time, eg at the same edge of a certain clock pulse? How are input and output synchronized? Can I be sure they never go out of sync?
Solved!
Go to Solution.

update: looking at the DAQmx control samples, it seems some of them set the start trigger for the AO to the AI start trigger. I mimicked this using kAO_START1_SelectAI_START_1 with the aoTrigger method, and the sync seems better now: the output starts exactly 10mSec after the input (or 5, if I preload only one frame) and stays in sync for about 25mSec. That it goes wrong.
At the moment I'm using no DMA, just one simple interrupt routine that basically does
board->Interrupt_A_Ack.writeAI_SC_TC_Interrupt_Ack( 1 );
board->Interrupt_A_Ack.flush();
toggle ^= 1;
board->Static_Digital_Output.writeRegister( toggle ? 0x00 : 0xff );
for( u32 i = 0 ; i < numSamples ; ++i )
const u32 val = board->AI_FIFO_Data.readRegister();
board->AO_FIFO_Data.writeRegister( val );
In the screenshot in the attachment you can see this goes wrong: cursor A shows the position of the input signal (=AI 0, yellow) that should be shown 10mSec later at the output (blue line=AO). Cursor B shows this 10mSec later position, and you can see there's some garbage right after the cursor. This is the data that was written to the AO FIFO in the fifth interrupt (interrupt position show in purple).
Trying to figure out where that comes from, I put board->AI_Status_1.readAI_FIFO_Empty_St() in the interrupt loop. And effectively, when trying to read the 500th sample, it reports that the FIFO is empty. Consequently the data written to the AO FIFO does not make sense anymore. But I do not understand how can this ever happen? The SC_TC interrupt is fired whenever 100 samples are read from the input. So after this interrupt occurs, the FIFO should always contain at least 100 samples, no?
Attachments:
tek00000.png ‏22 KB

How to check 6 digital signals change value at the same time with PCI-6229??

I am using DAQ card PCI-6229.
Channel 1 generate a digital signal.
Channel 2,3,4,5,6,7 acquire digital signals.
I want to check:
1. Whether the rising edge of Channel 2,3,4,5,6,7 occures at the same time;
2. The time delay from the rising edge of Channel 1 to the rising edge of Channel 2,3,4,5,6,7 is within a certain range.
I know I can use counter to get the two edge seperation time delay. But I only have two counter, it is two time-consuming if I check one by one.
I don't know how to check the rising edge of 6 different channels occure at the same time.
Does anyone has any suggestions?
Thanks

Hello,
You can use the DAQ card's digital input change detection circuitry to detect changes in the input, you can then use a counter to measure the relative time between samples. Please read Page 6-9 DI Change Detection Applications for more information. Let me know if this helps
Christian A
National Instruments
Applications Engineer

Using timer/counter with PCI-6221/USB-6210 to control timed-loop VI

Dear all,
I need to ask about two devices and one of their functionalities, PCI-6221 and USB-6210. For our NI-based system, we need to control some timings in a Timed-Loop vi, for that currently we are using PCI-6221 and we give external TTL signal (at 1 kHz) to it,
recenntly we need to make some changes and for that we found USB 6210 DAQ to be more suitable, but we need to clear ourselves on some specific things.
Can the counter/timers functions available in the either PCI 6221 or USB 6210 can be used to control the Timed-loop VI by giving external clock or by using their own internal clock source?
Although we are using external clock with the PCI 6221 but we want to know about the usage of their internal clock, also are controlling timed-loop also possible for USB-6210
Also... What if we use the RTOS, are they still able to control the timed-loop VI without giving any 'EXTERNAL CLOCK' and using the internal clock sources of the DAQs
Waiting for reply,
Bests,
RaJaf
Solved!
Go to Solution.

Ben,
I having read previous email which I send earlier with general overview, we discussed in more detail within our team and I am giviing the specific answers.
Please check in RED the most recent answers. Blue are the questions/suggestions by your side.
1.    Using Internal hardware clock of PCI-6221 would enable us get rid of external clock, but how to divert the internal hardware clock to the current settings. Any idea (can you provide us with some reference manul for otherwise). I mean is there some flag-bit etc. or VI
2.       Is it also meant that with the installation of RTOS the timed-loop can directly get the timing source from the internal hardware clock PCI-6221? --- How???
3.       In order to make desktop to work as RT system, what is the hardware (motherboard, processor, etc..) requirement? What are the LabVIEW modules (specific name) that needed to be installed? Our platform is LabVIEW 8.6. (Currently we have windows-7 with i7 core processor)
What kind of application are you intending for this system? ---- high-speed laser scanning system.
Are you most concerned about accuracy, speed, or responsiveness? To control the laser mirror scanner to move at 1 kHz or 2 kHz speed. On the other hands, using PCI-5105 (128 MB memory) as a DAQ for real-time/on-the-fly data processing.
Bests,
RAJAF

Mac G4 crashes using continuous generation with PCI-1200 DAQ card

I've been trying to use a PCI-1200 DAQ card with a Mac G4 to create a continuous analog output signal. The problem is that the computer locks up after a while (a few minutes). I have been using the Generate Continuous Sine Wave vi, but the problem remains.
I've tried slow signals (10Hz) and fast signals (2kHz) but the computer still seems to crash. I have no clue what is going on!

bissdp,
The first thing I would recommend is making sure you have the latest version of the driver:
www.ni.com > Support > Drivers and Updates > Current Versions > Multifunction DAQ
Another you could try is to determine what component is causing the computer to lock up. Use a process explorer utility to try to see what processes are locked up. A search in google might turn up utilities like this one: (http://www.clarkwoodsoftware.com/peekaboo/)
Keep in mind heat or speed issues. It may sound funny, but you may want to try opening the computer case and making sure the board has enough air flow to keep it cool.
These are just some ideas for now, I hope they help.
Alejandro Asenjo
Applications Engineer
National Instruments

Temperature Measurement using Iex Thermistor with PCI 6259

Hello All,
I am having some difficulty measuring temperature using MAX with Iex Thermistor setup, and would like to know if I have missed any thing important. I am using external current excited thermistor with 2 wire configuration and PCI 6259 card with MAX.
This is a channel that was originally configured to Voltage measurement and MAX measures about 900mV from this channel OK, the voltage converts to Temperature to be around 30C. Then I added a new channel and configured it to measure temperature directly using MAX default Iex Thermistor setup. This is when the problem show up: I will get a constant -273C instead of 30C as expected when run the channel in MAX. I must have been doing something wrong here.
Your help is greatly appreciated!
Bryan
Solved!
Go to Solution.

Hi Ravens, thank you for taking the time on this problem. I am sure the issue was not caused by the A, B, C parameters being wrong, as when I ran the channel in MAX, I am getting a constant -273.15 value, and it was not updated as a real measurement.
To your 2nd question, this is a case of measuring 1 thermistor value using the Iex Thermistor method vs. Voltage measurement. If I set it up to measure Voltage directly, I can see the realtime updates of the measurement values of voltage, which converted to Temperature in my VI to be reasonable values of temperature.
Bryan

Using 2 SCB-68 on PCI-6229

I'm having problem using 2 SCB-68s with PCI-6229:
1) Can I set 1 SCB68 in differntial mode (for Thermocouples with temp reference) and the second SCB68 in single ended mode (no temp reference)? MAX only shows "SCB68 Properties" for one unit.
2) When using labview, I can run VIs that uses ports on one of the two SCB68's, but not both, i.e, if I attempt to use both ports 0-15 and 16-31 in the same VI, I would get an error about resouce is reserved.
Thanks!
Easen Ho

Hey Easen,
1.) Are you using NI-DAQ 7.4? The DAQmx Team added support adding an SCB-68 to each of your connectors. You can also configure each connector seperately.
2.) I assume that when you say "ports", you are refering to the analog channels and not the digital channels. In which case, I assume that the problem is that you are trying to run two different analog input tasks on the same board. This is not possbile because all of the analog lines are viewed as a single resource. However, you can configure the analog lines in different create channel VIs and string them together, in the same task. Then you will have to sort the reading out, as they will be based on two different scales.
-Let me know if you have any further questions.
-Justin

How to handle large data while acquisition? BNC 2110

I want to acquire data using BNC 2110, I am writing a software in VB 6. We will use 3 channels. We are supposed to scan about 10000 points before AcquiredData is triggered. in all we will need to scan 10000 * 1000 * 1000 before data is put into a binary fall. Can anybody let me know, how to hande this large number points

Hello Vjuno,
In order to acquire 10,000,000,000 points you are going to have to be streaming this data to your hard drive as you go. To do this you'll need to write the data you read to a file each loop iteration. In general it is a good practice to make your "samples to read" at least 10% of your sample rate in seconds to avoid overflowing buffers, however, depending on your computer you may be able to go faster. I made an example program in LabVIEW and was able to read 10,000 points at a time from each of 3 analog inputs at 333MHz and write the values to file without overflowing a buffer. However, even opening a web browser while the code was running was enough to delay the VI long enough for the buffer to overflow.
You can use the DAQmx Configure Input Buffer call to increase the buffer size and account for spikes in CPU usage from other processes, and you should also monitor the "Available Samples Per Channel" property to make sure you aren't steadily gaining samples in your buffer. Since you want to acquire 10 billion samples at 1MHz this acquisition will take several hours; if you're not able to keep the buffer empty then it will become apparent before the end of your acquisition. By monitoring the samples in the buffer you can tell if you're pulling the samples out fast enough, if you find that this number is steadily increasing then you should either reduce the sample rate or increase the number of samples to read each time you call the DAQmx Read.
In my example program I used a write to TDMS (binary) file and a PCI-6251.
I hope this helps, and have a good night.
Cheers,
Brooks

BNC 2110 2111 synchronization

Hi, we are using several equipments including 2 BNC-2111 and 3 BNC-2110 with DAQCARDs 6062 in different computers for a big measurement. We are wondering whether it is possible to synchronize the measurement among these equipments. Our basic idea is to generate the tricker signal to PFI0 and other PFI channels. Does it work? Any suggestion is appreciated.

Hi knji,
On your BNC-2110 you have the "Digital and Timing IO" connector block. This is what you will use to connect your signals for your quadrature encoder. In the application note it says "Pin 37/PFI8/GPCTR_Source." You would connect this to PFI 8 on your BNC-2110. The other connections are just the same. For more information on the pinout for your DAQ card look in the E-series help manual:
http://digital.ni.com/manuals.nsf/websearch/0E0DFDBB7706687A86256F6300560584?OpenDocument&node=132100_US
Go to IO Connector >> IO Connector Pinouts >> 68-Pin Connector
-Sal

Data acquisition and frequency generation togather with PCI-6251 and LV8.2

Hi friends,
I am a new user of Labview. I am using LB8.2 with PCI-6251 .
I have to generate frequency and then measure the data and then for next frequency and so on.
i know that for this i have to use looping and that is not a problem. The real problem for measurement is to identify whether the frequency is been generated. if yes then measurements starts otherwise it should wait until it started. then after finishing the measurements send a signal to generator for changing the frequency and amplitude.
Now these two things {generation and measurement} togather are not working correctly for me. so i make 2 diff file, one for generation and other for measurements <by modifying the examples>. I can run both file togather and it works. But it need lots off effort and time. I have to measure from 10Hz to 1000Hz in 2Hz frequency step and i cannt leave in between .
can anyone help me how to syncronize these two togather .
Trying to attatch. both the files here ..
main_v1.1.vi --> for Measuring
Oscilloscope.vi --> for waveform generation
Attachments:
main_v1.1.vi ‏150 KB
Oscilloscope.vi ‏37 KB

Hay thnx dude..
I found the example and now it works
once again thanks a lot

Is there any successful example of USRP RIO with PCIe adapter?

Hi All,
Can I ask who has ever had successful experience of achieving high IQ rate using USRP RIO with PCIe adapter? If so, what PC were you using?
I am working on the USRP RIO. I tried to run the LabVIEW code for the USRP-2920 on the USRP 2950R but could not achieve a high IQ rate. The PC I am using has a mini-itx motherboard with H97 chipset, 16GB 1600MHz DDR3 memory, 256GB SSD, i7-4790K quad-core 4.0GHz CPU. Even if I connect the USRP-2920 to the PC, I could not achieve 20MS/s. When I was using a Macbook Pro with i7-3840QM, I could achieve 25MS/s IQ rate. But there is no way I installed a PCIe adapter to the laptop.
Thank you very much.

I have a benchmarking utility that I will attach here that can run through a number of IQ Rates and the number of samples in each Write call. Here are the results when I ran with an USRP-2940R over a x4 MXIe (PCIe) link. I configured to run a 2-channel continuous generation for 10 s for each test.
Device connected over PCIe
Conducting benchmarks for continuous writes (CDB, 16-bit).
IQ Rate 363 726 1000 3000 6000 10000 100000
1000000 0 0 0 0 0 0 0
2500000 0 0 0 0 0 0 0
5000000 0 0 0 0 0 0 0
10000000 0 0 0 0 0 0 0
20000000 39 0 0 0 0 0 0
40000000 18 18 0 0 0 0 0
60000000 9 36 15 2 0 0 0
80000000 22 17 14 0 2 0 0
90000000 15 22 15 9 9 9 9
95000000 21 21 22 9 9 9 2
97500000 16 14 31 9 9 9 9
100000000 15 34 25 9 9 9 10
The formatting may be hard to figure out, but the small numbers are the number of underflows. So 0 is what you want. As you can see, I can sustain rates up to 80 MS/s for at least 10 s IF my write size is big enough. That is, if I write at least 10,000 samples with each call to niUSRP Write, I don't see underflows. That's two channels, so we're talking 640 MB/s over the bus.
Here are some tips to increase your Tx streaming throughput:
0) Don't use a continuous generation at all. For many applications you don't need to stream continuously- a finite transmission (and you can loop a finite transmission) will do and you will basically not underflow in that case if you provide all the data up front.
1) As you can see from the chart, the bigger the data buffer you provide in each Write call, the faster you can stream.
2) Write sizes in multiples of the maximum packet size seem to work well. That number is 2044 for the USRP-294x/5x series (although that may change in future driver releases). Try sending bursts of 10220 samples.
3) If your application allows it, set a Start Trigger Time a little in the future. Then start writing data before the device starts transmitting. For example, set the Start Trigger Time to the (current device time + 1 second). Then start writing data and you will have a second to pre-fill the on-device buffers. This will substantially reduce the number of underflows.
4) Be sure to do your data processing out of your write loop, to keep the write loop filling the pipleline as quickly as possible.

Can I connect a SCXI 1000 with PCI 6025 ?

Can I connect a SCXI 1000 with PCI 6025 and use Virtual Banch with PCI 6025 ?

Bley,
Yes, you can use your PCI-6025E and SCXI-1000 with Virtual Bench. Do you have a more specific concern? Have you tried this setup, and it is not working?
Spencer S.

PCI 6014 and BNC 2110 digital output

Hi,
I try to use PCI-6014 through BNC-2110 to giving on a digital output 5V.
Please give advice or examples.
Thanks

First, there's the Getting Started with DAQmx. Then on the Measurement I/O>DAQmx palette is the DAQ Assistant. Also, open the example finder and from the main tab, go to Hardware Input & Output>DAQmx>Digital Generation. The simplest examples are Write to Digital Port and Write to Digital Line.

Using BNC 2110 with PCI 6229

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