Start and Stop Triggers

[pankajmohan@my-deja.com]

Hello!

I am using PCI-MIO-16XE-10 board and a PCI-6111E for data acquistion. I
wish to incorporate an analog start and a stop trigger on MIO board.The
acquisition rate is in KHz. What exactly I want to do is to acquire the
signal when the signal goes above the trigger value and stop acquistion
when the value is below the trigger value. Also, when the trigger is
ON, it should send message to the 6111E board (I have a RTSI bus) to
start the acquisition too, and stop when MIO has stopped acquistion.

How should I go about it?

I would appreciate your help!

Thanks in advance...


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Before you buy.

[Labview user name]

Use the analog trigger on the first DAQ board and trigger the second board
using the Route.vi and a pfi line out to the digital trigger of the second
DAQ board. It works quite well and it is easy to pre-trigger the second
board if needed. The timing is flawless.

A few notes:

1. The NI manual (at that time) had the incorrect usage of the route.vi.
Use the device number in place of the Task id.

2. Do not use parallel while loops. Nest both reads in the same loop.
Buffer accordingly

3. Windows NT is much preferable to 95/98 for this sort of thing.

4. Avoid extraneous devices such as network cards and sound boards. They
clog the bus.

pankajmohan@my-deja.com wrote in message <7vckiu$1f4$1@nnrp1.deja.com>...
Hello!

I am using PCI-MIO-16XE-10 board and a PC
I-6111E for data acquistion. I
wish to incorporate an analog start and a stop trigger on MIO board.The
acquisition rate is in KHz. What exactly I want to do is to acquire the
signal when the signal goes above the trigger value and stop acquistion
when the value is below the trigger value. Also, when the trigger is
ON, it should send message to the 6111E board (I have a RTSI bus) to
start the acquisition too, and stop when MIO has stopped acquistion.

How should I go about it?

I would appreciate your help!

Thanks in advance...


Sent via Deja.com http://www.deja.com/
Before you buy.