two imput for difference measure type

[韃靼]

Hello, everyone,

I use USB-6211, LabVIEW 7.1.

I have a question. I want to acquire Voltage and Temperature by two AI.
Although i already can get my result, but it too slow,
Does any method can provide fast acquisition for me?

The attached fiqure is my LV diagram.
Thanks your help.

Yuquan, Taipei.

[Dennis_Knutson]

Use a single task with a single DAQmx Read - NChan 1Samp. Wire the task output of the first DAQmx Create Channel to your second DAQmx Create Channel and now you have a single task with two channels. The way youare doing it, you are starting and stopping two tasks with each iteration.

[韃靼]

Dear Dennis, thank for your help.
but i have another question, you say i can use "iteration" to get my data.
I guess that must be used the icon "index array", but i don't know how to connect to two indicator.
because when the data connect to the icon, it become the single value!

Following figure is my diagram, can you point out my wrong part?
Thanks.

Yuquan, Taipei.

[Dennis_Knutson]

First, you need to connect the output of the DAQmx Read to the Index Array function. Then you need to expand the Index Array to get two outputs. Then you need to wire each output to a separate chart.

Nowhere in my earlier reply did I say anything about the iteration terminal.

Message Edited by Dennis Knutson on 03-30-2008 01:37 PM

[韃靼]

Hello Dennis,
i already try successfully.
Thank your help.

Yuquan



由 韃靼 在 03-31-2008 11:21 AM 上編輯的訊息