DECTalk Express Gives a "Command Error in Parameter" Error

This article applies to:

• Kurzweil 1000

Symptoms

Kurzweil 1000 speaks using the DECTalk Express, but occasionally DECTalk Express says "Command error in parameter" and stops speaking.

Cause

Characters being sent between the PC and the DECTalk Express are being lost.

Solution

The DECTalk Express is connected to a serial COM port. COM ports have an option to enable or disable the FIFO buffer. The FIFO buffer should be disabled.

To disable the FIFO buffer, display the Windows Control Panel. Select System.

On Windows 95, 98, and ME, choose the Device Manager tab. On Windows 2000 and XP, choose the Hardware tab, then click the Device Manager button.

Regardless of which operating system you have, you should now see a tree view of hardware device types. One of the types is Ports (COM & LPT). Expand that device type and select the Communications Port that the DECTalk Express is connected to. Display the port's properties by typing the Enter key.

In the Properties dialog, select the Port Settings tab, then click the Advanced button. Uncheck the "Use FIFO Buffers" option and click the OK button. Click OK again on the Properties dialog and close the Control Panel window.

Reboot your computer and run the Kurzweil 1000 again. It should speak through the DECTalk Express without errors.

History

Creation Date: March 10, 2003

Last Modified: March 10, 2003