Object ID: 00000018WIA30272E40GYZ
Topic ID: id_2019792 Version: 2.1
Date: Nov 11, 2020 12:17:35 AM

Checking the PEN panel trigger

About this task

The trigger LED on the response pad should be on when the cable is properly connected from the exciter to the response pad. Disconnecting the cable at the controller box should cause the trigger LED to turn off. This is a quick method to determine proper continuity between the exciter and the response pad.

Procedure

On the host PC, open a tty connection to the Cedrus controller as follows (if a connection is not already open):
1. Open a terminal window.
  
  Note: The Shell window can only be launched when the EA3 user is included in the authorized EA3 group. Users not in this EA3 group will not have access to launch the Shell window. If you are not logged in as the proper logon user, log out and then log back on as the correct EA3 user with the authorized permissions.
2. Type screen /dev/ttyCedrusLumina.
  
  Note: The signals are sent through pins 4 and 9 of the DB-9 connector.
Disconnect and reconnect the trigger cable from the exciter.
Observe the BrainWave terminal window on the host PC. You should see a T.
This checks the communication between the PEN cabinet and the host PC. The outputs from the response pads and the system trigger from the PEN cabinet are routed through the response system electronics and then to the serial port of the host PC.
To disconnect from the screen, press Ctrl + A, then the letter K, and then y to close the window.

Note: Do not use the X in top-right corner to close the window. The application will not be able to reconnect to the controller box. Reset the controller box to recover.