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LINDY CPU Switch Smart Installation and Use Page 36
4.8 Cascade query code
The LINDY CPU Switch Smarts use a special ‘query code’ to detect whether or not
they are connected to another LINDY CPU Switch Smart. By default your LINDY
CPU Switch Smart uses query code AD. LINDY CPU Switch Junior OSD (another
range of keyboard / mouse / video switches from LINDY Technology) units with
firmware versions less than 1.09 used query code EF. This was found to conflict
with a small number of other (rare) devices that used the same query code so an
alternative query code was provided to ensure compatibility. Either query code may
be used but you should make sure that all cascaded LINDY CPU Switch Smart and
LINDY CPU Switch Junior OSD units are set to use the same query code. If any of
the cascaded LINDY CPU Switch Junior OSDs have firmware versions less than
1.09 then the cascade query code for all the LINDY CPU Switch Smarts and LINDY
CPU Switch Junior OSDs should be set to EF.
L7 – Cascade query code = AD (default)
L8 – Cascade query code = EF
4.9 Resolving slow mouse problems
Due to certain technical reasons some systems running particular combinations of
operating system and mouse drivers are sensitive to small timing changes relating
to mouse communications. The introduction of a switch like the LINDY CPU Switch
Smart inevitably causes some timing changes and in rare cases interactions have
been observed that causes the mouse to run very slowly. Certain HP Vectra
computers running later versions of Windows NT with Logitech mouse drivers and
Logitech mice have been observed to exhibit such interactions with older switches.
One solution to this problem is to change the mouse driver.
The LINDY CPU Switch Smart is a high performance device that is carefully
engineered to minimise such interactions and should not exhibit this characteristic.
Nevertheless such interactions are unpredictable and so the LINDY CPU Switch
Smart is fitted with a feature that ensures that the mouse can never operate at a
very slow rate regardless of such interactions. This feature is activated using the
following options:
L5 – Allow the mouse to run at any speed (default)
L6 – Don't allow the mouse to run at very slow speeds