Re: Access database and LabView 7.0

2004-05-10 Thread Jeff Dillon
Tor Arne <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > I want my labview program to find out the number of the last record in > a MS Access database before I write new data to it. > Is this possible with LabView 7.0? > > Thank you. > > Tor Arne And don't forget that you can

DAQ Noise with Laptop

2004-03-21 Thread Jeff Dillon
I'm directly measuring the voltage from a 1.5V battery for example using differential input with unshielded 1m cable from the terminator board to card. Even using the Test Panels with my DAQCard 6024-E PCMCIA card in my laptop I see lots of noise, +/- 1 volt or more. When I remove the AC power and

Averaging Elements in an Array

2004-03-21 Thread Jeff Dillon
Let's say I have a one-dimensional array with 100 elements. I need to average the 3rd through 97th elements. How would I do this? Jeff

Re: Determining Voltage Rate of Change

2004-03-21 Thread Jeff Dillon
Process Systems <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > The number of samples is irrelivent. The delta-T is derived from the > sampling rate. In this case, 1000 HZ sample rate corresponds to 1 ms. > delta-T. > > Good luck. > > Dave Hmmm...I've wired it up, but it looks

Re: Determining Voltage Rate of Change

2004-03-21 Thread Jeff Dillon
Process Systems <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Take a look in the Functions/analyze/signal processing/time domain and > select the Derivative x(t).vi. This should do the trick for you. > > Good luck. > > Dave Looks promising! So, given 100 samples to read at

Determining Voltage Rate of Change

2004-03-21 Thread Jeff Dillon
In my VI, I need to set a digital line if the measured input voltage changes too rapidly. I've created a simple VI and placed the DAQ Assistant in a While loop that measures a 0-10V input voltage via my 6024E-DAQCard. The VI uses a global channel named MyVoltage that I've created. I've set the Ana

Re: ActiveX and LabVIEW (again!)

2004-03-21 Thread Jeff Dillon
shoneill <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > I understand from Greg McCaskle's answer that this is something which > may come in future (And judging how far LabVIEW has come, I'm sure it > will be incorporated). > > If you're developing code in other languages which