User guide

3: Installing the Spider
SecureLinx Spider/SpiderDuo User Guide 30
2. Reboot is required.
Notes:
 Background wallpaper and desktop appearances do not have any particular limitations.
 Microsoft Active Desktop and Linux virtual desktop are not supported. If bandwidth is a
concern, plain backgrounds are preferred.
 If you are using a special video card or OS, consult the documentation.
Mouse-to-Cursor Synchronization
Mouse-to-cursor synchronization can be an issue with digital KVM interfaces because PS/2 mice
transmit incremental information about movement over a period of time rather than an absolute
measurement.
The OS driver translates acceleration-to-distance based on the local screen resolution and applies
linear or nonlinear acceleration mappings. When a remote client communicates with the target
server, settings and screen resolutions on both sides of the connection must be taken into account
to get natural mouse-to-cursor tracking.
Use the USB keyboard and mouse when supported by the target computer. Unlike the PS/2
interface, a USB mouse uses absolute coordinates rather than relative coordinates and does not
present translation issues between the local and remote computers.
The PS/2 Spider model sets the keyboard and mouse interface to Auto. When it first attempts to
use the USB interface, and if it does not detect a USB interface, it falls back to PS/2.
There are no restrictions on the mouse settings of the client systems and no special care must be
taken when setting mouse parameters of target servers for USB mice. The PS/2 interface
performance (tracking) and synchronization can be optimized by removing any special
acceleration or nonlinear ballistics.
Perform the following steps to configure the mouse-to-cursor synchronization.
 Windows Server
1. Select Control Panel > Mouse > Pointer Options.
2. Set the pointer speed to medium and disable Enhanced pointer precision.
 Linux Server
1. Set Mouse Acceleration to exactly 1 and threshold to exactly 1.
2. Select Other Operating Systems on the Spider mouse settings page.
 Solaris Server
1. Set the mouse settings by using the CDE control panel to “1:1, no acceleration” or “xset m 1”.
 Mac OS X Server
1. Set the Spider to Single Mouse Mode.
Telnet/SSH Connections to Serial Ports
To Telnet/SSH to a target computer serial port, you must Telnet/SSH to the Spider serial port first
and use connect serial CLI. This connects your Spider to the target computer serial port. The
default settings are 9600 bps, 8 data bits, 1 stop bit, no parity, and no flow control. The pinout of
the included Spider cables match a standard DB9 COM port.