Configuring Channels and Acquiring from SCXI and PXI6070E

Configuring Channels and Acquiring from SCXI and PXI6070E
Products used: Two SCXI 1520 modules(let's consider A and B) with one PXI 6070E on PXI1011 chassis.
Problem: i want to know is that whether it is possible to configure channel 0 of A and Channel 0 of B to Channel 0 of PXI6070E
[email protected]

As configured,all of the SCXI channels in the 8 slots are multiplexed through Channel 0 of your DAQ device. The general form of a DAQ channel call to the SCXI is:
ob0!sc(n)!md(m)!(Channels)
where: ob0 stands for Onboard channel 0 (DAQ Dev)
sc(n) - chassis n
md(m) - module m
channels - channel string [ 0:7 or 0,2,4 or ... ]
You can perform the operation you want, however, I would suggest using MAX >>Data Neighborhood>>virtual channel. Use the Virtual channel wizard to configure two channels CH0 and CH1 where:
CH0 is referenced to Module A channel 0
CH1 is referenced to Module B channel 0

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Configuring Channels and Acquiring from SCXI and PXI6070E

Products used: Two SCXI 1520 modules(let's consider A and B) with one PXI 6070E on PXI 1011 chassis.
Problem: i need to configure channel 0 of A and Channel 0 of B to Channel 0 of PXI 6070E and configure channel 1 of A and Channel 1 of B to Channel 1 of PXI6070E
[email protected]

In order to use multiple modules you need to make sure that all of the SCXI modules are in multiplexed mode and NOT parallel mode. This will cause all of the channels on the SCXI 1520s to be multiplexed to channel 0 on the PXI 6070E.
You then can scan any channel you want by using the SCXI channel string ob0!sc1!mdx!y, where x is the module number starting with 1, y is the channel number for that specific module. Your scan list needs to scan all of the desired channels on module A in order, before scanning the channels on module B.
You can open up MAX or most LV examples and enter (assuming A is md1 and B is md2) "ob0!sc1!md1!0:1,ob0!sc1!md2!0:1". However, I would recommend using virtual channels and just separate them with commas. Make sure you put them i
n the correct order as well.
I hope this helps.
Joshua

Reading Data from SCXI 1600

Hi Experts,
I am new to this SCXI Interfacing. Kindly help me in the context
I am developing an application which is going to be use SCXI 1125 module and SCXI 1600 controller.In the application I want to allow the user to configure various Task in the front panel.
What are the controls needed in the front panel to allow the user to configure Task
How to read the data from SCXI 1600,
How to differentiate eight channel data coming from SCXI 1125 thro SCXI 1600
Thanks in advance
Solved!
Go to Solution.

True, you cannot simulate the SCXI-1600. This means you will not be able to run your code without the hardware. For simulation purposes you can, however, use another device that would function in a similar manner to the SCXI-1600 in terms of triggering, resolution, and sampling rate.
As for the programming, you would use DAQmx as I had mentioned. There are no examples that are specific to the SCXI-1600, but you don't really need them. The SCXI-1600 is fundamentally a data acquisition module that happens to be in a SCXI form factor with a USB connection. As far as your software is concerned you will use DAQmx to read data from it. So, take a look at the DAQmx examples that gather data from data acquisition devices.
Your task will define how many channels you will be reading. Since you are reading a mixture of measurements (temperature, pressure, and possibly just plain voltages) you will need to decide whether to create separate tasks for each of these measurements that are configured to be specific to that measurement type, or to create one task that simply reads all unscaled channel values (i.e. raw voltages) and then you scale the values in your code. If you open the Example Finder and navigate the tree to Hardware Input and Output -> DAQmx -> Analog Measurements you will see categories for the different measurement types. Many of them have graphs.
If you have not already done so, you may want to start here: http://zone.ni.com/devzone/cda/tut/p/id/3116

Has anyone ever successfully done a cont double buffer acq from multiple SCXI channels AND a spare AI of the MIO that controls the SCXI chassis at the same time?

I am trying do a sanity check before I order some hardware.
What I want to do is acquire from multiple channels in a SCXI chasis and as part of the same acquisition, also read from one of the "un-used" AI channels of the MIO card.
My concern is this:
All of the channels of the SCXI chassis get multiplexed down into a single channel of the MIO card that controls the SCXI chassis. This means that channel 0 has to do multiple A/D conversions to get a reading from all of the configured SCXI channels.
Meanwhile, the other AI channel of the MIO only has to do one to get it's reading. It seems that the on-boar
d clock of the MIO would have to run at two rates to be able to read all of my SCXI channels AND the other AI channel.
What I want to do:
I want to just configure a vitual channel for all of my SCXI channels AND one more for one "odd-ball" signal that is incompatable with all of the SCXI modules.
Then I just want to list all of my virtual channels when I configure and start my continuous double buffered acquisition.
I have successfully done all SCXI channels before, but I have never tried to use one of the un-used AI on the MIO at the same time. I have used the spare DIO lines previously, but that will not work in this app.
So...
If you have done this and it worked, I would greatly appreciate hearing about any special techniques that were used, etc.
Thank you for reading this question,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Jeremy answered here
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=50650000000800000007C40000&UCATEGORY_0=_30_%24_12_&UCATEGORY_S=0
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Has anyone ever successfully done a cont double buffer acq from multiple SCXI channels AND a spare AI of the MIO that controls the SCXI chassis at the same time?

I am trying do a sanity check before I order some hardware.
What I want to do is acquire from multiple channels in a SCXI chasis and as part of the same acquisition, also read from one of the "un-used" AI channels of the MIO card.
My concern is this:
All of the channels of the SCXI chassis get multiplexed down into a single channel of the MIO card that controls the SCXI chassis. This means that channel 0 has to do multiple A/D conversions to get a reading from all of the configured SCXI channels.
Meanwhile, the other AI channel of the MIO only has to do one to get it's reading. It seems that the on-boar
d clock of the MIO would have to run at two rates to be able to read all of my SCXI channels AND the other AI channel.
What I want to do:
I want to just configure a vitual channel for all of my SCXI channels AND one more for one "odd-ball" signal that is incompatable with all of the SCXI modules.
Then I just want to list all of my virtual channels when I configure and start my continuous double buffered acquisition.
I have successfully done all SCXI channels before, but I have never tried to use one of the un-used AI on the MIO at the same time. I have used the spare DIO lines previously, but that will not work in this app.
So...
If you have done this and it worked, I would greatly appreciate hearing about any special techniques that were used, etc.
Thank you for reading this question,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Jeremy answered here
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=50650000000800000007C40000&UCATEGORY_0=_30_%24_12_&UCATEGORY_S=0
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How can i control NI-6115 to collect data from 2 channels and save as 2 files?

I want to program NI-6115 card to collect data from 2 channels and save the two data into two different filenames that i specified?
How do i write in labview codes?

Calibur,
LabVIEW includes a number of examples that demonstrate how to acquire analog input data and write it to disk. Dependent upon the type of file you would like to use, I would suggest that you examine one of the following examples:
Cont Acq to File (binary).vi
Cont Acq to File (scaled).vi
Cont Acq to Spreadsheet File.vi
With regards to writing each channel's data to a separate file, you will need to use the Index Array function to generate two 1-D arrays, each containing data for one channel. These arrays can then be written to separate files using two Write File functions.
Good luck with your application.
Spencer S.

HT204291 I have my apple TV plugged into my Denon receiver. My receiver is setup with 3 speaker channels, one center, one left front and one right front. When I listen to music via Airplay, sound comes only from the center channel and right, nothing on

I have my apple TV plugged into my Denon receiver. My receiver is setup with 3 speaker channels, one center, one left front and one right front. When I listen to music via Airplay, sound comes only from the center channel and right, nothing on the left. When I watch Cable Television (not using the Apple TV), all 3 channels work fine so I know that the speaker connections are fine.

I had problems with streaming until I changed the WiFi channel that I was using. The original one conflicted with my neighbor. After that, MOST of my streaming problems vanished. Occasionally, a movie would pause for more buffering and I eventually ran an ethernet cable from the Apple TV to my Apple Extreme (to eliminate the Wifi). I have not had a single problem since then (except to repair the drywall after running the ethernet from one floor to another). :-)

How do i clear deleted Channels and buss sys from Change Lists

Hi friends,
i had created few bussiness systems and few communication channels and had activated them , now trying to delete it
it gets deleted from the object tab in the integration directory but still shows on Change Lists which is very annoying. how do i delete them permanently from the Change Lists

Hi,
You need to activate the changes after deleting any object, so that it is permanently removed.
If you have second thoughts after deleting it, you can go to change list and reject the changes that will restore the object u have deleted.
regards,
P.Venkat

How to create a vi project with two ao channel and multi ai channel by customer/producer mode

I'm a ni elvis ii user.
i want to create one vi which include 2 AO channel output FGEN and multi AI channel acquisition signal，
and i wish use cunstomer/producer mode to realize this vi。
here is the vi，run this vi seveal secends，then pop-up with “完成该操作内存不足”
anyone can help me？
thx
Attachments:
demo.vi ‏191 KB

Hi steve ,
Sorry to say that you cannot configure and acquire from AI channels on a Device simultaineously from 2 seperate VI's.
regards
Dev

Acquire multi channel in labview from DPO2024

I am trying to acquire signals from multiple channel and view them in the same graph. I tried but failed each time. Any help will be appreciated.
Attachments:
data_write_from_oscilloscope.vi ‏79 KB

I can't look at your VI since I am posting from my phone but the basic technique is to configure both channels, initiate, READ channel one, then FETCH channel 2. Combine results to single graph.

Sample per channel and sample to read

Hello everybody
I am new in LABVIEW and I have some difficulties with something.
I don t know exactly what is the difference between the sample per channel et the sample to read. I believe knowing that the sample per channel is the size of the buffer which is more big than the sample rate but I don t know what is the sample to read.
I ve tested with different sample per channel and sample to read. Sometimes I have an error and sometimes know and I would like to know why. If you have any example for I understand better, it will be great.
I really need to understand this part for my project
Thank for your help
Romaric GIBERT
Solved!
Go to Solution.

Hi Roro,
As you mentioned, when acquiring continuous samples you can specify the sample buffer size by placing a value at the input "samples per channel" on the timing vi. The "number of samples per channel" input on the read vi which automatically names a control/constant with "samples to read" specifies the number of samples you wish to pull out of the buffer in one go when reading multiple (N) samples. This link may provide a bit more clarification. I have also attached a good example from the NI example finder which you may find useful to explore. I'm assuming you are using the DAQmx driver set so please let me know if this is not the case, but the same principles should apply either way.
This therefore means when sampling at a given rate, you need to ensure you are pulling data out in big enough 'chunks' to prevent the buffer from overflowing (which may well be causing the error you are seeing). Conversely if your sampling rate is slow and your read vi is having to wait for the number of samples to read you specified to be available, it may throw a timeout error. You can avoid this by either increasing your sampling rate, reducing your samples to read or increasing the timeout specified at the read vi input (-1 means it will wait indefinitely).
Let me know if this helps and how you get on.
All the best.
Paul
http://www.paulharris.engineering
Attachments:
Cont Acq&Graph Voltage-Int Clk.vi ‏27 KB

How to acquire from various AI channels simultaneously with a different range for each one?

How to acquire from various AI channels simultaneously with a different range for each one?
In LabView I have found some examples but in C there isn't seem to be any.
Solved!
Go to Solution.

Or you can add channels one by one with individual instructions: the follwing code compile and runs with no errors on a vitual daq device:
err = DAQmxCreateTask ("", &taskH);
err = DAQmxCreateAIVoltageChan (taskH, "Dev1/ai0", "AI0", DAQmx_Val_Cfg_Default, -5.0, 5.0, DAQmx_Val_Volts, "");
err = DAQmxCreateAIVoltageChan (taskH, "Dev1/ai1", "AI1", DAQmx_Val_Cfg_Default, -10.0, 10.0, DAQmx_Val_Volts, "");
DAQmxStartTask (taskH);
err = DAQmxReadAnalogF64 (taskH, 5, 10.0, DAQmx_Val_GroupByChannel, val, 10, &read, 0);
DAQmxClearTask (taskH);
Proud to use LW/CVI from 3.1 on.
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Logical Channels and Opening An Application

Hello,
Upon sending an APDU to a Java Card (a GEM card) to open a channel, it works fine. But when I try to select an application on that new logical channel which is in the secured state, it always gives back an error, but I can select that same application from the basic channel. Do I need to do something else besides simply opening the new logical channel to let it be able to select applications in the secured state?
Thanks,
Mizax

Hello,
Thanks for your response.
Yes I'm sure the card supports multiple logical channels, I've checked the historical bytes, and am able to open the number of logical channels the historical bytes say I should.
I can select other applications on the new logical channel and send commands to them, that works fine. When selecting a secured application, it fails with error code. In particular, I'm trying to select the card manage application, and that fails. Although this shouldn't be necessary, I make sure the basic channel doesn't have the card manager selected also:
Log:
Warm Reset Card
Open Logical Channel 1
Command: 00 70 00 01
Response: 90 00
Select some other App on the Basic Channel:
Command: 00 A4 04 00 0F A0 00 00 00 18 50 21 00 00 00 00 00 57 49 42
Response: 90 00
Select card manager on Channel 1:
Command: 01 A4 04 00 07 A0 00 00 00 18 43 4D
Response: 6E 00
To sum up: Open a new logical channel, select some other app on the basic channel, try to select the card manager on the new logical channel, it fails. If I then reselect the card manager on the basic channel, it works fine. I can select other non-secured apps on the new logical channel, and that works fine too. In any of the cases I mention, I ensure that only one channel is trying to select an app, so that I'm not worrying about the issue of whether an app is multi-selectable.
I've been wrestling and googling this for hours with no luck. Any help would be greatly appreciated.
Thanks,
Mizax

Tennis Channel and Customer Service

My saga continues. Let me first start out by saying that I divorced DIRECTV to come to Verizon. So far with the exception of your customer service, the marriage has been great. I was watching the Tennis Channel last on Sunday; the Mutua Madrid Open was scheduled to start on Monday. Imagine, my outrage, when I saw “you are not subscripted to the Tennis Channel” popup on my TV screen. This took me back to 2011 when Verizon and the Tennis Channel were battling and I could only see the U.S. Open on CBS and ESPN.
When I phone Verizon on Monday, I was informed there was a program outage and that my service would be restored on Monday night. That did not happen. Same song and dance on Tuesday. On my third day of calling I was finally informed that my current package was outdated no longer carried the Tennis Channel, but if I switched to another plan, for an additional fee, I could get the Tennis Channel. Reluctantly, I did. I was assured by Samaritan, that the Tennis Channel would be available in 5 minutes. It wasn't’t and still isn't’t. Today, when I spoke to Mike, he informed that the programming change was scheduled to take place on 5/8/13. At this writing and when I spoke to Mike it was 5/8/13. Once informed Mike that it indeed now 5/8/13. He then informed me that Central Time on 5/8/13, that programming was set up for. Samantha also informed me that my programming was outdated and was no longer offered. I asked about the 99.00 plan that was being offered on your website for new customers, but she said that I did not qualify for the plan. What am I chopped liver? If I am on a plan that does not exist, why can’t I get the special that is being offered to new customer. I did not have an agreement in place?
Verizon, I am irate with all the runaround, and all the “is there something I can help you with” when I have not received any help in the first place. I am at a loss as to why does the recording ask you for your account information, when the representative finally gets on the phone, they start over and ask for the very same account information, then when, they pass you to another department, I again have to provide my account information. Yes, my frustration is mounting.
The bottom line is your customer service stinks; you don’t deliver when you say you are. And if I was not still angry with DIRECTV, I would go back to them. My search continues for a cable company that offers actual customer service. When I find a new cable company that has the Tennis Channel and appears to be somewhat reliable, beware Verizon!
Sad Customer
Meta Fitzgerald

Please go to your profile page for the forum by clicking on your name, and look at the top of the middle column where you will find an area titled "My Private Support Cases".
There you will find a link to the private board where you and the agent may exchange information. This should be checked on a frequent basis as the agent may be waiting for information from you before they can proceed with any actions. Please keep all correspondence regarding your issue in the private support portal.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer that solved your issue as the accepted solution.

How Do I Delete My Postcast Channel and Create a new one

Hey everyone,
I have had a nightmare trying to get support from iTunes and Apple.
I have lost access to my old iTunes Podcast in 2012. I have been in contact with iTunes, Apple support...etc and they are not able to help me get access to my channel
https://itunes.apple.com/ca/podcast/social-media-the-truth/id472634190?mt=2
The service I was using their website is no longer available.
Have two questions
1) Does anyone know how I can get access to my channel so I can
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or
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I would really love your help with this

You can can only access your podcast by accessing the feed - you can't make any changes in iTunes. Your podcast still works - the feed is at
http://rss-feed.s3.amazonaws.com/51178.xml
and the top episode downloads and plays when subscribing.
The correct method for moving a podcast to another feed is to add a special tag to the original feed as described here: however I would assume that you can't do this. Your next step would be to contact Support at podcasts 'at' apple.com and ask them to move the Store to using the new feed. Give them the iTunes Store URL and the URLs of both feeds. I can't absolutely promise they will do this but they have done so for other people.
Before you do this, test out your new feed by subscribing to it manually in iTunes and checking that the episodes appear and download.

Configurin​g Channels and Acquiring from SCXI and PXI6070E

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Configuring Channels and Acquiring from SCXI and PXI6070E