Lightwave Communications 2X16 - Manual (Page 6)

Lightwave Communications PC ServerSwitch 2x16
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2.0 PC ServerSwitch 2x16 - System Information
2.1 Video
The PC ServerSwitch 2x16 incorporates an active, high-bandwidth switch for
graphics adapter cards supporting resolutions up to 1600 x 1200 pixels. A constant
impedance of 75 ohms is maintained on all video lines in the 2x16, so that the
video signal is not compromised by mismatched impedance. Monitor sense lines
are also transported by the PC ServerSwitch 2x16. The ID lines are buffered and
passed from the monitor to the attached graphics adapters in the servers.
2.2 Keyboard / Mouse
The PC ServerSwitch 2x16 is an intelligent switch for the keyboard and mouse.
Each port emulates the keyboard and mouse fully, allowing an attached server or
PC to boot without having been previously selected. Power for each connected
device is monitored from the keyboard port.
If there is no connection on a keyboard port, an error message will be displayed
on the front panel display. The attached servers are not affected because of the
keyboard and mouse emulation.
Each port maintains a local copy of the keyboard and mouse configuration. When
the user switches from one port to another, the keyboard is set up just as it was
prior to switching to another port. The mouse behaves in a similar manner.
2.3 System Control
The PC ServerSwitch 2x16 is controlled either by using the UP and DOWN arrows
on the front panel of the unit or via On-Screen Menus from their Console
(Keyboard, Monitor and Mouse).
The 2x16 is a transparent device to the User. The User (of which there may be one
or two) can select which server they wish to access from their Console, from up to
16 connected Servers. In cases where two or more 2x16 units have been
cascaded, additional Servers can be accessed by the two Users, up to a maximum
of 96 Servers.
To access the 2x16’s switching capability, the User must “wake up” the on-screen
display to control the system by pressing both ‘Cntl’ keys simultaneously (referred
to as ‘Cntl-Cntl’) or press the Scroll Lock key twice on their PS/2 keyboard.
If the User is near the 2x16 (for example, in a backroom location), the User may
instead select a server by using the Up and Down buttons on the front of the Unit.
The display will show which Servers are available. To select between User A and
User B, press both the Up and Down buttons on the front panel of the 2x16 at the
same time to shift between the two users.