Raritan Computer Raritan ASMI G4 - Manual (Page 23)

Chapter 4. ASMI G4 Module Configuration
Mouse and Keyboard Configuration
Three Blind Mice, See How They Run...
The proper configuration of a remote mouse is somewhat difficult to understand unless you know some
underlying concepts. Basically mice transmit their movement using two methods: either absolute or
relative mode.
Absolute mode means that the mouse transmits absolute co-ordinates to the ASMI module. This is
information like: "I am moving to screen co-ordinates X,Y". This mode is very easy to track and most
modern Windows versions (XP, 2000, 2003) as well as Mac OS X use it. This mode is also easiest for the
ASMI module to track.
The second mode is relative mode. In this case the mouse transmits information like "I am moving 97
pixels vertically and 88 pixels horizontally from my previous position". This is much more difficult to
track.
First and foremost the ASMI module has to know the starting point of the movement (hence you need to
press a special "Synchronize" Button, which allows the ASMI module to locate the starting point of the
mouse).
Secondly a lot of other factors come into play like the mouse acceleration which can be different on the
remote system and the local system/PC you are using to talk to the ASMI module. Hence the ASMI
module has to do a lot more conversion work to track the mouse than using absolute mode.
Relative mode is used by most Linux Systems and older operating system like Windows 95/98.
Therefore you need to select "Other Operating Systems" if your PC uses this mode.
Remote Mouse Settings
A common problem with KVM devices is the synchronization between the local and remote mouse
cursors. The ASMI module addresses this situation with an intelligent synchronization algorithm. There
are three mouse modes available on the ASMI module:
Auto Mouse Speed
The automatic mouse speed mode tries to detect the speed and acceleration settings of the host
system automatically. See the section below for a more detailed explanation.
Fixed Mouse Speed
This mode just translates the mouse movements from the Remote Console in a way that one pixel
move will lead to n pixel moves on the remote system. This parameter n is adjustable with the
scaling. It should be noted that this works only when mouse acceleration is turned off on the remote
system.
Single/Double Mouse Mode
This mode is described in the Section called Single and Double Mouse Mode .
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