Black Box VSC-VPLEX4 Operating Instructions 5.1 DVI Input, Output, Configuring the VideoPlex4

Chapter 5: Operating Instructions

5. Operating Instructions

5.1 DVI Input

When the VideoPlex4 is powered up successfully and the Power, Input, and Status LED indicators are lit, a DVI input mode has been detected and is working normally.

If the Input LED indicator is not on, make sure a single- or dual-link DVI cable is correctly fitted to the appropriate sockets.

At high resolution, DVI signals cannot normally be guaranteed beyond 16 feet (5 m) cables because of the nature of the signal losses inherent in the DVI cables and connectors. Equalization hardware on the VideoPlex4 compensates for these losses and supports cable lengths of up to 64 feet (20 m) even at full dual-link resolutions (330 MHz pixel clocks). Lower resolutions will allow even longer cable lengths.

Once the LED indicators are lit, the VideoPlex4 will display the source across all four screens according to the configuration that is stored in its non-volatile memory. The VideoPlex4 is factory configured to display the input image as a 2x2 split as shown in Figure 3-1.

5.2 Output

To connect to an analog output, DVI-I-VGA cables are required. To connect to a DVI output, a DVI-D cable is required.

5.3 Configuring the VideoPlex4

The VideoPlex4 has a USB port to allow a host PC to connect to the VideoPlex4 box and for the user to program its configuration. Once configured, the VideoPlex4 will run standalone without needing a USB connection and will auto-detect input resolutions and adjust internal scaling to drive the output monitors consistently.

5.4 Frame-lock

The firmware running on the VideoPlex4 will detect when input and/or output timings are set to identical frame rates and will automatically frame-lock the syncs in these cases. In all frame-lock modes, the timings are configured to share a common reference clock, so there will be no drift in synchronization, and therefore no requirement for continual adjustment that can sometimes upset LCD panels. The frame-lock status is shown in the VideoPlex4 Control Application.

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