Qwurgxfwlrq – Grass Valley XSwitch Feb 01 2005 User Manual

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The keyboard from the same PVTV NEWS system is connected to the upper MINI-DIN connector labeled
"K" in the "STUDIO A" connector group. The mouse plugs into the upper MINI-DIN connector labeled "M"
in the "STUDIO A" connector group. Connections from the lower MINI-DIN connectors labeled "K" and "M"
are taken back to the keyboard and mouse ports respectively of the associated computer.The same con-
nections are repeated for the second PVTV NEWS system at the "STUDIO B" I/O connector group.

The SCRIPT Viewer systems are connected on the right-hand side of the connector panel, in the same
manner as the PVTV NEWS systems. Switching of the RGB portion of the VGA signal groups is handled
actively, while all other signals in this group are switched passively. This is done to maintain integrity and
cable drive capability of the RGB signals. Independent, active buffering and switching channels, which pro-
vide proper termination and standard 75 Ohm impedance characteristics, processes all video signals. Typ-
ical RGB video signal switching time is 5 nS. This is an insignificant time span relative to the switching time
of the VGA signal groups as a whole.

The keyboard and mouse switching is primarily passive, but does employ some semiconductor based
power coupling circuitry. Contact closure times do not exceed 6 mS for any portion of the KVM Module.

The XSWITCH can also be expanded vertically by adding up to 3 Expansion Modules to any Master Mod-
ule. The Expansion Module is 4 Rack Units and holds up to 10 switch cards. The individual Expansion
Modules communicate with each other through a SCSI connection. The Master Module still controls the
entire switching system, and communicates with the Expansion Modules through an RS232 connection. If
you need an Expansion Module, please contact ParkerVision Customer Support.

Normal Path

Switched Path

VGA In

PS2 In

VGA In

PS2 In

PS2 Out

VGA Out

PS2 Out

PV KVM "X"

Switch