Too much zooming in NI-HyperTrend locks lookout process.

[knk]

I'm using lookout 5.0 over W2K. When I try to zoom-in too much in NI-HyperTrend (Activex control object) Lookout locks and hence I have to end process using the Windows Task Manager. I'm using '+' icon to zoom in. Any idea? (urgent)

[Patrick R.]

KNK,
Although I am running Windows XP, I tried to created a NI-Hypertrend and reproduce the behaviour that you described, but after countless "zoom in" button clicks, Lookout does not seem to lock up. How many traces are you viewing on the Hypertrend? How fast are you clicking the button to zoom in? Are you scrolling back in time beforehand? If you were to create a new, seperate process file and try to reproduce the issue; can you? And other characteristics that may help determine the cause would be great.

Thanks,

Patrick R.

[knk]

Hello Patrick R.

thank you for your message. The pc on which the lookout process (only one process) runs, is dedicated for a Fieldpoint string. Pc communicates with FP-1600 (ethernet comm module) directly. FP string we have 8 modules(2 x AI-100, 1x RLY-420 and 5x RTD-122). Total I/O number is 55. Several NI-hypertrend objects (activex control objects) display several (4 to 36) signals. The signals are logged to the citadel database at local hd. There is no other application running meanwhile.
Cliking frequency of zoom button is normal (2-4 Hz). It doesn't matter if we stop the graph or not. after zooming the cpu usage peaks to 98-99 percent and then we are to end the lookout application.
The system is on site. I tried also in office using lookout5.0/examples/ap
plications/batch2.l4p . I create a new NI-hypertrend and insert several traces. it locks up after deep zoming. This phenomena repeats itself randomly. I tried after once more but I was unable to lock it. I think that the trend chart cannot follow the fast changing data.

thanks for your action.
kemal (knk).

[Patrick R.]

Hi Kemal,

I am still unable to reproduce the issue. If you could possibly send me a small example and some basic instructions of how to reproduce it, I would much appreciate it. Just create the process file and then attach the .lks file here so that I can access it. I will then try it on my machine as well as a Windows 2000 machine to see if I see the behaviour. If not, we will have to determine if it is something to do with your computer. Thanks in advance.

Patrick R.