• Topic ID: id_2019792
  • Version: 2.0
  • Date: Oct 13, 2019 9:24:38 PM

Checking the PEN panel trigger

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

  1. 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.
    2. Type screen /dev/ttyCedrusLumina.
      note: The signals are sent through pins 4 and 9 of the DB-9 connector.
  2. Disconnect and reconnect the trigger cable from the exciter.
  3. 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.
  4. 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.