3 Overview
The Kramer VS-311H is a high performance 3x1 HDCP (high definition
digital content protection) compatible1
The VS-311H switches any one of three HDMI HDCP compliant
automatic switcher for HDMI signals,
digital audio (S/PDIF) signals, and stereo audio signals.
1sources to
a single display device, on HDMI connectors with the corresponding:
•Digital audio (S/PDIF) input signals switched to an S/PDIF output, on
RCA connectors and/or
•Unbalanced stereo audio input signals on 3.5 mini-jack connectors switched
to an unbalanced stereo audio output on a 3.5 mini-jack connector, as well
as to a balanced stereo audio output on a 5-pin terminal block connector
The VS-311H can operate either in the manual mode or in the auto mode.
In the manual mode, the VS-311H acts as a regular switcher, switching the
input video and audio signals to the output via the three front panel INPUT
SELECT buttons.
In the auto mode, you can switch any input to the output via the three front
panel INPUT SELECT buttons, but once the selected video signal is lost, the
machine automatically switches to the highest priority input, according to the
input priority setup2
When selecting an INPUT SELECT button, via the manual or auto mode, that
button illuminates. Pressing an illuminated button deselects that input and that
button no longer illuminates.
. The VS-311H will switch back to the primary input
when an HDMI signal is detected on that input.
The VS-311H is housed in a desktop-sized enclosure and is 12V DC fed.
Control the VS-311H using the front panel buttons, or remotely via:
•RS-232 serial commands transmitted by a touch screen system, PC, or
other serial controller
•The Kramer infrared remote control transmitter
•The ETHERNET
•Remote control contact closure
1 HDCP is a standard, developed by Intel, to protect copyright holders (movie studios, and so on) from having their programs
copied and shared The HDCP standard provides for the secure, encrypted transmission of digital signals over HDMI or DVI
connections between two HDCP-enabled devices The source device (such as a DVD player or HDTV tuner) encrypts the
digital signal using the HDCP standard, and then sends that signal over the HDMI or DVI connection to the receiving device
(for example, an HDTV) The receiving device decodes the signal using HDCP and uses the signal as it is allowed
2 As described in section 5 1
