Dakota Computer Solutions
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1579 Lexington Road
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Green Oaks, IL 60048
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Tel: 847-816-1337
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Fax: 847-816-4558
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Keyboard & Mouse Emulation
The VoyagerUTP uses a microprocessor to emulate the keyboard and mouse. This means that a
keyboard and/or mouse do not have to be connected to the Voyager’s Remote Unit for your PC to
boot. The PC will boot with only the Local Unit of the VoyagerUTP connected.
This feature ensures that your PC will always operate regardless of whether the Remote Unit is
actually connected or powered. The remote keyboard and mouse may be plugged in and out at any
time.
‘Scroll Lock’ Reset
The VoyagerUTP redefines the Scroll Lock key as a
device reset
. Whenever you reconnect a
keyboard or mouse to the Remote Unit, press ‘Scroll Lock’ to reinitialize them. You should also press
‘Scroll Lock’ should the keyboard or mouse ever lock up.
Should you need to use ‘Scroll Lock’ for a software application, please call technical support.
Mouse Sync (Null Mouse Command)
The Voyager UTP allows recovery of the mouse should it ever go out of sync (mouse pointer jumps
over the screen).
Use the following procedure to recover the mouse:
1. Press and release the Scroll Lock key (twice on local console) to reset the keyboard and mouse.
2. Check if the mouse is now operating correctly.
If the mouse is still erratic, issue the following Null mouse command to re-synchronize the mouse.
3. Press and hold down the left and right mouse buttons.
4. Press and release the Scroll Lock key (and then release the mouse buttons).
5. Check if the mouse is now operating correctly. If not, repeat steps 3 and 4 up to three times.
The Null Mouse Command sends a single null byte to the PS/2 mouse port. By issuing this command
up to three times the Voyager UTP mouse reports will become re-synchronized with the order
expected by the PC. Ordinarily, the mouse should never go out of sync. However, this command
provides a recovery mechanism avoiding the need to reload the mouse driver or reboot the machine
should this condition occur.
Note: Issuing the Null Mouse Command when the mouse is operating correctly will cause it to
go out of sync (unless the mouse driver is auto-correcting).
OPERATION