Local/Global/something else?

[David Green]

This question quite rightly shouts �beginner� (but we have all got to start somewhere)

Background info � (Using LCR 4284) trying to create a stepped voltage using just the DC source. So inputs accordingly are start voltage, step voltage, hold period and stop voltage.

Obviously take start voltage, add the step voltage hold for a period of time then increment again.

My problem is with the �new voltage� typically I would have just created a loop based loosely on the pseudo code below

Start voltage + step voltage = x
If ( x does not = stop voltage) then
x + step voltage
hold for period of time

else stop

tried looking at local/global variables to create a variable (x) but nothing seemed to operate in the way I expected it
.

Or would a shift register be better?

Well thank you for any time you spend answering this query

David Green

[ian_fung]

Try this. It Helps?

ian"

[David Green]

the attatchment looks as though it is the solution to my problem and maybe other peoples problems, but i am getting an error code (8- file permission error, cannot load vi resource).

Coments from anyone else?

David

[ian_fung]

It was created in LV6i. I have saved a copy of previous version and have it sent to your email. Check it out. Hope it is ok now.

[Dave Langstaff]

David Green wrote:
> This question quite rightly shouts 'beginner' (but we have all got to
> start somewhere)
>
> Background info - (Using LCR 4284) trying to create a stepped voltage
> using just the DC source. So inputs accordingly are start voltage,
> step voltage, hold period and stop voltage.
>
> Obviously take start voltage, add the step voltage hold for a period
> of time then increment again.
>
> My problem is with the 'new voltage' typically I would have just
> created a loop based loosely on the pseudo code below
>
> Start voltage + step voltage = x
> If ( x does not = stop voltage) then
> x + step voltage
> hold for period of time
>
> else stop
>
> tried looking at local/global variables to create a variable (x) but
> nothing seemed to operate in th
e way I expected it.
>
> Or would a shift register be better?
>
> Well thank you for any time you spend answering this query
>
> David Green

Instead of adding the step voltage at each point, you could use

x=Start+i*Step

and put it in a for loop structure.





--
Remove "spamkill." when replying to this message