need help in getting some waveforms. plz

[SivaSwetha]

hi

i'm doing my research work and i need the following waveforms.

first of all i need a squarewave of 0-5V. this runs for a fixed time.
5 __ __ __
| | | | | this is of the frequency of some 10khz.
0 -- -- --

next i need a 0V dc which is not a problem.

third i have a waveform which is 5V all the time, but goes to 0V once
the square wave stops. this will remain at 0 for some microseconds.
and then will go back to 5V. shud be able to control this notch
timing.

5 ____________________ ________________________
| |
0 -
notch in microsec


all the above 3 signals are needed in digital lines, if posible.

then i shud be able to plot and sa
ve the data for the third waveform.

lastly i need to read a random waveform.
all this needs to be in a single program.

i had done all this in simulink. but now he wants the whole thing in
labview. as i'm really new to this i was trying a lot of things.
_____________________________________________________________________________
my previous posts in the group are

how to get a series of numbers without using a loop?
is there a way to run loops faster?
how to convert an array having ramp pattern to ..................

those will give a way of wat i tried to do so far. but still not much
progress. if anyone cud give me a gud idea it will b nice.

thank you,

siva.

[Ben]

Hi Siva,

I have noticed all of your questions and have reviewed the answers that were provided to you.


Please look at Dennis comment to your question here

http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000000080000001FF90000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0

Let me summarize;

Your hardware can NOT do what you are asking!

The issue is that your hardware is not fast enough to keep up with your requirements!

Unless output impeadance is an issue, you could use the analog out functionality of your device to create a 0-5V output signal by construct an array of values that looks like what you need.
BUT
To get a 10Khz 50% duty cycle output signal you will need two values, (one for the high, one for the low).

Since your device can only do 10KHz, the best you can do is 5KHz.

Now re:the microsecond notch
NO GO with your hardware!

What you should do is first sit down and decide the actual duration of the notch and by what factor you would want to vary the width of the notch. This will tell you the maximum output rate.

You could also call NI sales and explain what you need to do and they will more than happy to suggest the right hardware.

As it stands "The horse you got, ain't never gonna pull that plow!"

Trying to help,

Ben

[SivaSwetha]

thanx for the reply. jus wanted to know what will change in accordance
with the timing wen i change the board from 6024E to 6110E.

i think the 6110E is a much faster board.

thank you,
siva.

Ben wrote in message news:<50650000000500000089D40100-1079395200000@exchange.ni.com>...
> Hi Siva,
>
> I have noticed all of your questions and have reviewed the answers
> that were provided to you.
>
>
> Please look at Dennis comment to your question here
>
> http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000000080000001FF90000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0
>
> Let me summarize;
>
> Your hardware can NOT do what you are asking!
>
> The issue is that your hardware is not fast enough to keep up with
> your r
equirements!
>
> Unless output impeadance is an issue, you could use the analog out
> functionality of your device to create a 0-5V output signal by
> construct an array of values that looks like what you need.
> BUT
> To get a 10Khz 50% duty cycle output signal you will need two values,
> (one for the high, one for the low).
> Since your device can only do 10KHz, the best you can do is 5KHz.
>
> Now re:the microsecond notch
> NO GO with your hardware!
>
> What you should do is first sit down and decide the actual duration of
> the notch and by what factor you would want to vary the width of the
> notch. This will tell you the maximum output rate.
>
> You could also call NI sales and explain what you need to do and they
> will more than happy to suggest the right hardware.
>
> As it stands "The horse you got, ain't never gonna pull that plow!"
>
> Trying to help,
>
> Ben

[Ben]

"Now that's a horse of a different color!" (Wizard of Oz).

Look at the example I cite in my earlier answer to you.


http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=137&HOID=506500000005000000D6D30100&HTHREAD=000119766&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0

That should get you started using the analog output of the 6110.

You will have to change the data to get different output waveforms.

Ben