DSP-USB Hardware Failed to Open

Message: [E3 Hardware] DSP-USB Hardware failed to open or be detected

Cause: Disrupted information flow between computer - control unit. 

Action: 1) Make sure you have not opened up a second instance of the Espion software.  Windows may be configured to open Espion application at startup.  We recommend disabling that automation.  

• • For Windows 7, 8, and early Windows 10, use msconfig.exe

1. 1. 1. Click the Start button and type msconfig in the program and file search box. Press Enter, and the System Configuration window will be displayed.
      2. Click the Startup tab and all startup programs installed on the PC will be listed.
      3. Uncheck the check box of the program, in this case Espion, that you no longer want to start when the PC boots.
      4. Click Apply and then click OK. A dialog box will pop up with an option to restart the computer. Click Restart to reboot the PC.

• • For Windows 10 April 2018 version and beyond, use Task Manager

1. 1. 1. Click the Start button and type Task Manager in the program and file search box. Press Enter.
      2. Click the Startup tab and all startup programs installed on the PC will be listed.
      3. Click on the program you want to modify behavior for, in this case Espion, and click Disable.
      4. Close task manager window.

         2) Restart Software and Replug USB

1. 1. 1. Close software.
      2. Unplug USB cord from both ends (computer & control unit)
      3. Replug USB.              
      4. Open software.
      5. Check for error. 

         3) Check Drivers.

1. 1. 1. Open Windows Start -> Control Panel -> Device Manager -> Ports tab -> Check for                  "other devices"
      2. Right click "other device" -> Update Driver Software -> Browse My Computer > Browse for      C:\Multifocal -or- C:\Multifocal Espion USB Drivers > Next > Close.

             See article on updating USB drivers for more information.

         4) Make sure the Windows power option called USB selective suspend is disabled.   This can be                       found in Control Panel -> Power Settings -> Change Plan Settings -> Change Advanced Power                   Settings.

Definitions:

Control Unit is the unit to which the amplifier connects. 

Drivers allow computers to communicate with hardware. See article on updating USB drivers for more information.