Black Box ServSwitch ACU2 01A-R2, User Manual

Page: 37 / 62

REMOTE UNIT CONFIGURATION & OPERATION
35
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 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, the 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 Local Unit’s DDC
emulation data could be flash-upgraded with a custom DDC table. Please contact Technical
Support to discuss your application.
Alternatively, the DDC from the remote monitor(s) may be read and stored in the Local Unit
using the Transfer DDC command (see page 36).
Always reboot Windows after adjusting a DDC parameter.