Kramer Electronics 610T - Manual (Page 9)

610T, 610R - Using the Detachable Optical DVI System 7
You can use the power supplied through a DVI pin from the graphic cards instead of
using the power adapter. After completing the installation, if the system does not seem
to work properly, reconnect the power adapter while the system is powered.
8. Set up the screen resolution as required.
Figure 4: Connecting the 610T/610R Detachable Optical DVI Transmitter/Receiver
4.3 Avoiding Pitfalls with the 610T and 610R
If any of these problems occur, we recommend the following:
If the display device shows only a black screen:

Check that all the AC and DC plugs and jacks used by the external power
supplies are firmly connected

Check that the DVI ports are firmly plugged into the computer and the
display device, and be sure that the transmitter and receiver modules are
correctly plugged into the computer and display device, respectively

Check if the computer and display are powered ON and properly booted

Reset the system by unplugging and then replugging the transmitter DVI port
or receiver DVI port and then reboot the system
If the screen is distorted or displays noise:

Check if the graphics resolution is properly set

Go to the Display Properties of Windows and check the settings