Actiview components

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jrs
Posts: 8
Joined: Wed Jul 27, 2005 3:30 am

Actiview components

Post by jrs » Thu Jul 28, 2005 3:58 am

Hi,

I'm just starting out with lab view and find looking at the main actiview block diagram very confusing and daunting. Does anyone have:

1) A cut down version of actiview that simply reads the data from the USB
2) A manual or some doco for actiview explaining what each of the sub vi's are and do
3) Some tips as to where to find the raw signals on the main block diagram and how best to use them - I have created a new tab in the interface and placed some fields on it - I'm lost though as to where on the block diagram I should place these fields, do i have to move everything around to fit them in near the raw data objects.....when i find them

Thanks in advance - James

jrs
Posts: 8
Joined: Wed Jul 27, 2005 3:30 am

another question

Post by jrs » Wed Aug 03, 2005 1:13 am

Also could someone please list the 6 states (very top left, main case structure) for the actiview VI

Coen
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Post by Coen » Thu Aug 04, 2005 12:19 pm

ActiView is based on a state machine (case structure inside while-loop) with six (orange) states:

State 0: Wait for START, and read/write CFG files
State 1: Start acquisition, determine speedmode and AD-box version, set panel controls accordingly, stop acquisition
State 2: Reset panel indicators
State 3: Initialize saving to BDF file
State 4: Start acquisition, iterate while-loop to write data to screen and BDF flle (if selected) until STOP is pressed, or error occurs, stop acquisition
State 5: Reset panel indicators, close BDF file

The while-loop in (orange) state 4 has five (green) cases.

Case 0: Wait for new data
Case 1: Read new data from ringbuffer, downsample data, write data to charts and in file array
Case 2: Transfer block of 1 second of data from file array to BDF file
Case 3: Close BDF file, and open new BDF file
Caee 4: Calculate average result, and write to ERP graphs

Further on-line processing subvi's are best hooked to the 2D output array of Downsample.vi Subvi (orange state 4, green case 1), see viewtopic.php?t=61. As an alternative, you can leave ActiView fully intact, and work with the TCP/IP link, see viewtopic.php?t=64.

Best regards, Coen (BioSemi)

Coen
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Post by Coen » Tue Jul 04, 2006 5:00 pm

A trimmed down version in LabVIEW 8.2 is now available from http://www.biosemi.com/download/ActiView603-Light.zip

Best regards, Coen (BioSemi)

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