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Chapter 5: Operation
5. Operation
5.1 Download of DDC Information
By default, data from the internal DDC list is reported to the source (computer, CPU). If these settings do not lead to a satisfying
result, you can download and store the console monitor’s DDC information internally. The devices must be configured accordingly
(see Section 4.2).
On all KVM Extenders with USB-HID support, the user can load the DDC information of the console monitor via keyboard
command under operating conditions.
1. Enter Command Mode with the “
hotkey
” (see Section 4.2).
2. Press the
<a>
key to download the DDC information of the console monitor.
The screen goes black for a short time.
At the same time Command Mode is closed and the keyboard LEDs return to previous status.
3. Restart the corresponding source (computer, CPU).
The video mode has been readjusted. Screen quality should be optimal. The CPU should now show the console monitor as the
current screen, together with the available video resolutions.
The DDC information of the console monitor was loaded once. Reloading is possible by repeating the operation.
5.2 Shared Operation of redundant CPU Units
CPU Units with a redundant connector for interconnect cables offer the possibility for a competing control by two connected
CON Units.
Taking over control is performed using a keyboard and/or mouse. The release timer function determines the release time of the
input devices at one of the CON Units after that control can be taken over from the second CON Unit.
In order to configure a redundant CPU Unit for the operation with two competing CON Units, proceed as follows:
1. Connect a redundant CPU Unit to any source (computer, CPU) by using a mini USB connection.
2. Open the file "Config.txt" that is located on the appearing flash drive of the extender.
3. Activate the release timer by writing the parameter RELEASETIME=n into the second line. The variable "n" defines the time in
seconds and has to be replaced by the numbers 0 to 9 (e.g. RELEASETIME=5). If this parameter is not activated at all, the
release time is set to 2 seconds by default. The parameter RELEASETIME=X deactivates the shared operation.
4. Save your changes.
5. Reboot the CPU Unit.
