MATLAB Central Newsreader - outputting data with NI USB-6008 in MATLAB

outputting data with NI USB-6008 in MATLAB

Yeelin Chong — Wed, 22 Aug 2007 14:53:54 -0400

Hi,

I am trying to outputting data with NI USB-6008 analog
output channel, however I am facing problem everytime i
run the program.

my program is as below:

ao = analogoutput('nidaq','Dev1');
addchannel(ao,1)
set(ao,'SampleRate',150);
set(ao,'TriggerType','Immediate');
putdata(ao,3.5)
start(ao)

???analog output subsystem of this device does not support
clocked generation, must use PUTSAMPLE to output data.

while I change the PUTDATA to PUTSAMPLE command, another
error will shown

???only 1 sample per channel can be output

I am wondering how to settle the above problems, however I
couldn't find out a solution. Could any one help on this?
Besides that, i would like to have a simple program that
can be used to output data to analog output channel.

Thank a lot...

regards,
yeelin

Re: outputting data with NI USB-6008 in MATLAB

Sherryl Radbil — Tue, 25 Sep 2007 14:13:58 -0400

Hi Yeelin,
The USB-6008 does not have an onboard clock, therefore you
cannot use PUTDATA/START. You must use PUTSAMPLE, just as
the error message states.

When I change the code use PUTSAMPLE and start I do not see
the error you are seeing.

If this is still an issue please post the exact code for the
putsample example and I will try it here.
Include everything from the "ao = analogoutput..."

Regards,
Sherryl

"Yeelin Chong" <yeelin_e0@hotmail.com> wrote in message
<fahim1$dt2$1@fred.mathworks.com>...
> Hi,
>
> I am trying to outputting data with NI USB-6008 analog
> output channel, however I am facing problem everytime i
> run the program.
>
> my program is as below:
>
> ao = analogoutput('nidaq','Dev1');
> addchannel(ao,1)
> set(ao,'SampleRate',150);
> set(ao,'TriggerType','Immediate');
> putdata(ao,3.5)
> start(ao)
>
>
> ???analog output subsystem of this device does not support
> clocked generation, must use PUTSAMPLE to output data.
>
> while I change the PUTDATA to PUTSAMPLE command, another
> error will shown
>
> ???only 1 sample per channel can be output
>
>
> I am wondering how to settle the above problems, however I
> couldn't find out a solution. Could any one help on this?
> Besides that, i would like to have a simple program that
> can be used to output data to analog output channel.
>
> Thank a lot...
>
> regards,
> yeelin

Re: outputting data with NI USB-6008 in MATLAB

Jacob — Tue, 09 Oct 2007 20:35:13 -0400

I am having the same trouble, but once I change over to
"PUTSAMPLE" start, I receive the following error:
> ??? Data must be queued using PUTDATA before starting.

Error in ==> annewave at 49
start(ao)

Help?!
Thanks!
Jake

"Sherryl Radbil" <sherryl.radbil.dontspamme@mathworks.com>
wrote in message <fdb536$lci$1@fred.mathworks.com>...
> Hi Yeelin,
> The USB-6008 does not have an onboard clock, therefore you
> cannot use PUTDATA/START. You must use PUTSAMPLE, just as
> the error message states.
>
> When I change the code use PUTSAMPLE and start I do not see
> the error you are seeing.
>
> If this is still an issue please post the exact code for the
> putsample example and I will try it here.
> Include everything from the "ao = analogoutput..."
>
> Regards,
> Sherryl
>
> "Yeelin Chong" <yeelin_e0@hotmail.com> wrote in message
> <fahim1$dt2$1@fred.mathworks.com>...
> > Hi,
> >
> > I am trying to outputting data with NI USB-6008 analog
> > output channel, however I am facing problem everytime i
> > run the program.
> >
> > my program is as below:
> >
> > ao = analogoutput('nidaq','Dev1');
> > addchannel(ao,1)
> > set(ao,'SampleRate',150);
> > set(ao,'TriggerType','Immediate');
> > putdata(ao,3.5)
> > start(ao)
> >
> >
> > ???analog output subsystem of this device does not support
> > clocked generation, must use PUTSAMPLE to output data.
> >
> > while I change the PUTDATA to PUTSAMPLE command, another
> > error will shown
> >
> > ???only 1 sample per channel can be output
> >
> >
> > I am wondering how to settle the above problems, however I
> > couldn't find out a solution. Could any one help on this?
> > Besides that, i would like to have a simple program that
> > can be used to output data to analog output channel.
> >
> > Thank a lot...
> >
> > regards,
> > yeelin
>

Re: outputting data with NI USB-6008 in MATLAB

Sherryl Radbil — Wed, 10 Oct 2007 14:33:52 -0400

Jacob,
It is hard to know exactly what is wrong with your code
without seeing it.

Note that PUTSAMPLE stands on its own.
PUTDATA/START are a pair.
You can read about these 3 commands in the online documentation.
This page also mentions devices with no onboard clock so you
may want to start here.
http://www.mathworks.com/access/helpdesk/help/toolbox/daq/f6-6809.html

Also, this solution may interest you as it describes the
behavior of a device without an onboard clock for analog output.
http://www.mathworks.com/support/solutions/data/1-1DQAPW.html?product=DA&solution=1-1DQAPW

Sherryl

Re: outputting data with NI USB-6008 in MATLAB

ida jia — Fri, 31 Oct 2008 18:54:02 -0400

Hi,Yeelin, I got exactly same problem as you got here. Have you figured it out? When I try to use PUTSAMPLE I also got the same error.

Thank you so much.

"Yeelin Chong" <yeelin_e0@hotmail.com> wrote in message <fahim1$dt2$1@fred.mathworks.com>...
> Hi,
>
> I am trying to outputting data with NI USB-6008 analog
> output channel, however I am facing problem everytime i
> run the program.
>
> my program is as below:
>
> ao = analogoutput('nidaq','Dev1');
> addchannel(ao,1)
> set(ao,'SampleRate',150);
> set(ao,'TriggerType','Immediate');
> putdata(ao,3.5)
> start(ao)
>
>
> ???analog output subsystem of this device does not support
> clocked generation, must use PUTSAMPLE to output data.
>
> while I change the PUTDATA to PUTSAMPLE command, another
> error will shown
>
> ???only 1 sample per channel can be output
>
>
> I am wondering how to settle the above problems, however I
> couldn't find out a solution. Could any one help on this?
> Besides that, i would like to have a simple program that
> can be used to output data to analog output channel.
>
> Thank a lot...
>
> regards,
> yeelin

Re: outputting data with NI USB-6008 in MATLAB

ida jia — Fri, 31 Oct 2008 20:20:18 -0400

I try it again using PUTSAMPLE instead of putsat and start, it works then
"ida jia" <ruting.jia@utsa.edu> wrote in message <gefk8a$lcc$1@fred.mathworks.com>...
> Hi,Yeelin, I got exactly same problem as you got here. Have you figured it out? When I try to use PUTSAMPLE I also got the same error.
>
> Thank you so much.
>
> "Yeelin Chong" <yeelin_e0@hotmail.com> wrote in message <fahim1$dt2$1@fred.mathworks.com>...
> > Hi,
> >
> > I am trying to outputting data with NI USB-6008 analog
> > output channel, however I am facing problem everytime i
> > run the program.
> >
> > my program is as below:
> >
> > ao = analogoutput('nidaq','Dev1');
> > addchannel(ao,1)
> > set(ao,'SampleRate',150);
> > set(ao,'TriggerType','Immediate');
> > putdata(ao,3.5)
> > start(ao)
> >
> >
> > ???analog output subsystem of this device does not support
> > clocked generation, must use PUTSAMPLE to output data.
> >
> > while I change the PUTDATA to PUTSAMPLE command, another
> > error will shown
> >
> > ???only 1 sample per channel can be output
> >
> >
> > I am wondering how to settle the above problems, however I
> > couldn't find out a solution. Could any one help on this?
> > Besides that, i would like to have a simple program that
> > can be used to output data to analog output channel.
> >
> > Thank a lot...
> >
> > regards,
> > yeelin