Polycom RMX 1500 Administrator's Manual page 110

Chapter 2-Additional Conferencing Information
2-48
2
In the Open field, type dxdiag and press the Enter key or click OK.
A confirmation message is displayed.
3
Click Yes to run the diagnostics.
The DirectX Diagnostic Tool dialog box opens.
4
Click the Display tab.
To be able to display the video preview window, the DirectDraw
Acceleration and Direct3D Acceleration options must be Enabled.
If the video card installed in the PC does not support DirectDraw
Acceleration, a black window may be viewed in the Video Preview
window.
5 Click the Exit button.