Digital Signal Guidelines - Extron electronics DMS 1600 User Manual

Digital Signal Guidelines

DVI and HDMI signals run at a very high frequency and are especially susceptible to bad
video connections, too many adapters, or cables that are too long. To avoid the loss of an
image or introduction of image jitter, follow these guidelines:
The DVI cable on the input or output of the switcher should not exceed 50 feet (15.2 m).
•
• Use only cable designed for DVI signals.
• If the display exhibits a flashing black or blue screen, snow, or other distortion, a
non-HDCP compliant display may be receiving an HDCP-encrypted signal.
• Check for an HDCP problem by ejecting the DVD from the player. If the display
distortion stops and the DVD menu or screen saver image is clear, the problem is
HDCP-related.
• The DMS matrix switchers work as described in point-to-point applications. Do not use
any additional adapters, patch panels, or couplers with the input or output DVI or HDMI
cables. Additional links in the signal chain can result in the reduction of signal integrity
and overall cable length performance.
DMS 1600, DMS 2000, DMS 3200, and DMS 3600 • Operation 40