Specifications

SERVSWITCH

 PS/2 MICRO EXTENDER FAMILY
32
Private Mode
On dual access systems, a user at one console can lock out the other console by triggering a
‘Private Mode’ function. This prevents the other console from being used even if the two-
second inactivity timeout period expires.
To indicate that the Private Mode session is active, the extender system:
• Slowly flashes the Scroll Lock LED on the user’s keyboard.
• Illuminates all three LEDs on the other console’s keyboard.
• Locks the other console’s keyboard and mouse.
• Displays a blank image on the other console’s monitor. If you want the other console
monitor(s) to remain active during Private Mode sessions, use the Toggle Video
Blanking State command.
To cancel the Private Mode, enter Command Mode again and press <Scroll Lock>. This
command also closes Command Mode.
DDC Emulation
Modern graphics cards use VESA DDC (Display Data Channel) to identify the capabilities of
connected monitors. Some cards will not operate correctly unless they communicate with a
DDC-enabled monitor.
By default, a PS/2 Micro Extender Local Unit emulates a universal monitor (on both
channels) and reports that it is capable of all standard screen resolutions and refresh rates.
This ensures that the vast majority of graphics cards and monitors should operate correctly
with the extender system.
The DDC emulation can be optionally disabled but this would only be required in special
applications.
It is also possible that the default DDC emulation may not report a non-standard graphics
mode, for example, if an HDTV monitor is connected. In this case, the DDC from the remote
monitor(s) may be read and stored in the Local Unit using the Transfer DDC command (see
page 33).
In addition, the default DDC emulation is flash-upgradeable (see page 45).
Always reboot Windows after adjusting a DDC parameter.