How can I capture BIS information and send it to my data recording system? ... to my personal computer?

Aspect A-2000 Serial Port Data Capture Technique

It is possible to capture the ASCII-formatted processed EEG variables from the A-2000 BIS Monitor using the software within the Microsoft Windows® personal computer environment; specifically, the HyperTerminal Communications program for capture, and the Microsoft Excel® program for presentation and data handling.

Requirements

• A-2000 Bispectral Index (BIS) Monitor (with software Rev. 1.06 or above)
• A-2000 Operating Manual (070-0015)
• Serial cable (modem configuration), see Section 2.2
• Personal Computer (PC) with serial port COM1 or COM2
• HyperTerminal Communications program
• Microsoft Excel program

Setup

1. Connect A-2000 RS-232 serial port to the PC serial port using a modem serial cable.
2. Turn On A-2000 Monitor.
3. Turn On PC.

Data Capture Procedure (assuming Windows environment)

1. Open HyperTerminal program.
   • Click on Start/Programs/Accessories/Communications/HyperTerminal. (Note: Depending on the version of Windows used, HyperTerminal may be in a different folder, but it is always under Start/Programs/Accessories.)
     
2. I f a HyperTerminal session has not yet been set up for the A-2000:
   1. Enter the name (e.g. “A2000 data”) and Icon for the connection session, then click on the OK button.
   2. In the Connect using field select the COM port to use (i.e. COM1 or COM2) then click on the OK button.
   3. Set the Port settings:
      • 9600 baud, 8 data bits, parity none, 1 stop bit, no flow control
   4. Click on the OK button
      
3. Else Double-click on the A-2000 icon in the HyperTerminal window.
4. At this point data from the A-2000 is being received and visible on the computer screen.
5. Capture Data to a disk file (you must capture data to disk in order to view/process it in Excel).
   1. Highlight Transfer and select Capture Text
      • Enter path and name e.g. C:\EEG\patient1.txt, then click on the START button.
6. At this point data from the A-2000 is being received and written to the disk file. You will see columns of data without headings. To identify the columns, you need to insert headings.
7. Insert Header Records into data for the disk file (recommended to provide column headings for spreadsheet).
   1. On keyboard enter an upper case D (observe header record 1 and 2 are visible on screen)
      • Note: Other commands are also available to control A-2000 (see Section 4.2).
        
8. Before you exit HyperTerminal, you need to end data capture to the disk file.
9. Highlight Transfer and select Capture Text, then select Stop.
10. Before exiting HyperTerminal the first time, you may save this connection session so that you can use the same settings next time.
    1. Click on File, then click on Save.

Data view procedure from disk file with Excel

1. Open Excel
   1. File Open e.g. C:\EEG\patient1.txt
      • Select file data Delimited select Next > Button
      • Select delimiter Other (Pipe ( | ) character), select Finished Button

At this point the captured data in the disk file can be viewed and manipulated with Excel.
The requested Header Records should be found near the beginning of the file.
The data records prior to the Header Records can be deleted if they are unnecessary, or moved to below the Header Records if desired.

Note: The Date & Time "Column A" can be re-formatted in Excel to show the seconds detail:

1. Select entire “Column A”
2. Select Format/Cells/Custom
3. Select Type: m/d/yy h:mm
4. Modify Type, for example: mm/dd/yyyy hh:mm:ss
5. Click on OK

Note: On computers that are using Regional Settings other than English(United States), you need to replace all decimal points in the data with commas:

1. Select all data columns
2. Select Edit/Replace
3. In the Find what: box, enter a decimal point (period)
4. In the Replace with: box, enter a comma
5. Click on Replace All

Source: Serial Port Specifications P/N 070-0017 App. C

 

For technical assistance contact:

In the U.S.A.:
Technical Service Department
Aspect Medical Systems, Inc.
Tel: 800-442-2051 (USA)
Tel: 617-559-7000 (USA)
Email: techsupport@aspectms.com

Outside the U.S.A.:
Technical Service
Aspect Medical Systems B.V.
Haagse Schouwweg 8b
NL – 2332 KG Leiden
Tel: +31-715 725 935

<< Back to Frequently Asked Questions | Back to Top

Copyright © 2008. Aspect Medical Systems. All Rights Reserved. Terms of Use | Privacy