SMART-AVI SKM-04-LT Manual de usuario
SKM-04-LT
4-Port KM Switch with USB 2.0 Sharing
USER MANUAL
Designed and Manufactured in the USA
1-800-284-2131
www.smartavi.com
4-Port KM Switch with USB 2.0 Sharing 2
OVERVIEW
TECHNICAL SPECIFICATIONS_________________________________________________________________
WHAT’S IN THE BOX?_________________________________________________________________________
FRONT AND BACK___________________________________________________________________________
INSTALLATION_______________________________________________________________________________
INITIAL SETUP________________________________________________________________________________
SYSTEM OPERATION_________________________________________________________________________
TROUBLESHOOTING_________________________________________________________________________
TECHNICAL SUPPORT________________________________________________________________________
LIMITED WARRANTY STATEMENT____________________________________________________________
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4-Port KM Switch with USB 2.0 Sharing 3
Technical Specifications
USB
Signal Type USB 2.0, 1.1, and 1.0 w/ internal hub
CPU Ports (4) USB Type B (female)
User Control Interface (2) USB Type-A for keyboard and mouse connecon only;
(2) USB Type-A for USB 2.0 transparent
AUDIO
Input Interface (4) 3.5 mm Stereo Audio
Output Interface (1) 3.5 mm Stereo Audio
CONTROL
Front Panel Buons
RS-232 Via Control @ 115200 bps
Hot Keys Via Keyboard
OSD PASS Technology and Mouse Gesture Switching
OTHER
Power Adapter External 100-240 VAC/5VDC3A @ 24W
Dimensions 12.57” W x 1.76” H x 6.69” D
Weight 4.2 lbs
Approvals UL, CE, ROHS Compliant
Operang Temperature +32 to +104°F (0 to +40°C)
Storage Temperature -4 to 140°F (-20 to +60°C)
Humidity 5 to 90% (No Condensaon)
Emulaon Keyboard and Mouse
4-Port KM Switch with USB 2.0 Sharing 4
What’s in the box?
FRONT AND BACK
PART NO. Q-TY DESCRIPTION
SKM-04-LT 1 4-Port KM Switch with USB 2.0 Sharing
PS5VDC3A 1 12VDC 3A (minimum) power adapter with center-pin posive polarity.
1 User Manual
SKM-04-LT Back
SKM-04-LT Front
4-Port KM Switch with USB 2.0 Sharing 5
INSTALLATION
1. Ensure that power is turned o or disconnected from the unit and the computers.
2. Use a USB cable (Type-A to Type-B) to connect a USB port on each computer to the respecve
USB ports of the unit.
3. Oponally connect a stereo audio cable (3.5mm to 3.5mm) to connect the audio output of the
computers to the AUDIO IN ports of the unit.
4. Connect a USB keyboard and mouse in the two USB console ports.
5. Oponally connect stereo speakers to the AUDIO OUT port of the unit.
6. Finally, power on the KM by connecng a 12VDC power supply to the power connector, and then
turn on all the computers.
Note: You can connect up to 4 computers to the 4 port KM.
VIDEO
USB IN
USB K/M OUT
USB 2.0 OUT
USB1 USB2 USB3 USB4 RS232
USB K/M
5VDC2A
SKM-04-LT
4-Port KM Switch with USB 2.0 Sharing 6
INITIAL SETUP
Absolute Mouse Mode KM Switching
Relative Mouse Mode KM Switching
Aer all devices are connected to the SKM-04-LT, the user must choose a display topology
conguraon and display mode. By default, the SKM-04-LT is congured to a topology with four
screens arranged horizontally starng with Port 1 on the le.
The installaon setup must match one of SKM-04-LT’s predened display topology conguraons.
This can be selected through keyboard hotkey commands. Please refer to the “Display Topology
Conguraon” secon for the available display topologies.
SmartAVI’s new PASS (Progressive Automac Screen Switching) technology allows seamless switching
between computers by moving the mouse cursor from one display to another. With PASS, users can
eortlessly switch computers for faster producvity. PASS only works in Absolute Mouse Mode.
When using computers with mulple displays, SmartAVI developed a new feature called Mouse
Gesture Switching, which is a technology that allows switching between computers using simple
mouse clicks and gestures. No device driver is required. Simply press the scroll wheel twice and then
move the mouse in the direcon of the channel you desire to switch to. This feature only works in
Relave Mouse Mode.
SOURCE 1
SOURCE 3
CURSOR CURSOR
AUTO-SWITCH FROM 4 TO 3
AUTO-SWITCH FROM 1 TO 2
AUTO-SWITCH
FROM 2 TO 4
AUTO-SWITCH
FROM 3 TO 1
SOURCE 2
SOURCE 4
SCROLL 2X THEN
TO THE RIGHT
SCREEN
TO THE LEFT
SCREEN
TO THE UPPER SCREEN
TO THE LOWER SCREEN
4-Port KM Switch with USB 2.0 Sharing 7
Note: Display Topology species the number of horizontal columns. The number of vercal rows is
calculated in the soware by 4/n columns.
Custom Hotkey Triggers
Users can customize the keys that trigger hotkeys. The default trigger for hotkey funcon on the
keyboard is Ctrl + Ctrl. The trigger funcon can be used to change to the following keys:
Ctrl (Le / Right), Alt, Shi (Le / Right), Caps Lock, Scroll Lock, F1-F12
To view the current hotkey trigger seng:
Use the RS-232 command: /+ /+ ?+ ?+ Enter to view the current hotkey trigger. To reset the Hotkey
Trigger, use the “Factory Defaults” command.
To change the hotkey trigger seng:
[hotkey] + [hotkey] + X+ [desired hotkey]
Example: If the user’s current hotkey trigger is Shi and they want to change it to Scroll Lock, the user
would type Shi + Shi + X+ Scroll Lock.
COMMANDS HOTKEY
Display Topology (mulple rows) [CTRL][CTRL] H [1-4]
Limit Input Ports (one row only) [CTRL][CTRL] W[1-4]
Cursor Rolling (roll past display borders
up, down, le, and right) [CTRL][CTRL] O[0(OFF), 1(ON)]
# STATUS DESCRIPTION
1 OFF Non-selected port
2 ON Selected port
System operation
There are four ways to control the SKM-04-LT: front panel buons, keyboard hotkeys, RS-232 serial
commands, and through the included graphical user interface (GUI).
Front Panel Control
To switch to an input port, simply push the buon on the front-panel of the KM. If an input port is
selected, the LED of that port will turn on.
Front Panel - Port Selecon LEDs:
Hotkey Commands
A Hotkey command is a keyboard sequence used to trigger an acon on the SKM-04-LT via the
keyboard connected to the USB port of the SKM-04-LT. To acvate the hotkey sequence, press the
CTRL key twice and then enter the desired hotkey commands.
Note: All commands can use upper and/or lower case characters.
4-Port KM Switch with USB 2.0 Sharing 8
System operation (continued)
RS-232 Serial Control
The SKM-04-LT may also be controlled via RS-232 commands. To use these commands, you must use
HyperTerminal or an alternate terminal applicaon. The sengs for the connecon are as follows:
Baudrate 115200; Data Bits 8; Parity None; Stop Bits 1; Flow Control None.
Once you have connected to the SKM-04-LT via Serial, you will see the SKM-04-LT informaon when
the device starts up.
The following commands can be used for RS-232 with available keyboard hotkeys:
Graphical User Interfaces
In addion to the front panel buons, keyboard hotkeys, and RS-232 serial commands described
above, the SKM-04-LT can be congured through a simple GUI that oers all the same customizaon
opons as the other control methods. This interface can be accessed on the connected computers.
COMMAND DESCRIPTION HOTKEY RS-232 COMMAND
Switch All USB [CTRL][CTRL] [port #] [ENTER] //m[port #] [ENTER]
Switch KM Only [CTRL][CTRL] c[port #] [ENTER] //c[port #] [ENTER]
Switch USB Only [CTRL][CTRL] u[port #] [ENTER] //u[port #] [ENTER]
Reset Soware [CTRL][CTRL] r [ENTER] //r[ENTER]
Factory Defaults [CTRL][CTRL] f [ENTER] //f[ENTER]
Get Port Status N/A //?? [ENTER]
Switch resoluon
SKM channel: 1-4
Resoluon:
1 (1080p), 2 (4K), 3 (2K), 4 (720p)
[CTRL][CTRL] ce [SPACE] [SKM #]
[SPACE] [RESOLUTION #]
//ce [SPACE] [SKM #]
[SPACE] [RESOLUTION #]
Mouse control
X and Y axes set in percents
[CTRL][CTRL] mm [SPACE]
[resolution #] [SPACE] [x #]
[y #]
//mm [SPACE]
[resolution #] [SPACE]
[x #] [y #]
Mouse default posion [CTRL][CTRL] rl [ENTER] //rl [ENTER]
4-Port KM Switch with USB 2.0 Sharing 9
System operation (continued)
Display Topology Conguraon
The SKM-04-LT has a congurable display topology conguraon that can be easily acvated through
keyboard hotkeys. No soware or drivers are required to congure the display topology.
Note: Hotkey CTRL +CTRL command allows for mulple rows.
(1) Hotkey Command: “CTRL +CTRL +H +4 +ENTER”
Limit Input Ports Conguraon
The SKM-04-LT allows the user to shut o input from specic connected computers without the need
to disconnect them from the switch.
Note: Limit Input Ports commands reset the Display Topology conguraon.
Hotkey Commands: CTRL, CTRL W(X) commands (allows one row only):
CTRL +CTRL +W +4 +ENTER
Note: Limit Input Ports commands reset Display Topology conguraon.
CTRL +CTRL +W +3 +ENTER
Note: Port 4 N/A
Note: Port 3, 4 N/A
Note: Port 2-4 N/A
CTRL +CTRL +W +2 +ENTER
CTRL +CTRL +W +1 +ENTER
(2) Hotkey Command: “CTRL +CTRL +H +2 +ENTER”
(3) Hotkey Command: “CTRL +CTRL +H +3 +ENTER”
(4) Hotkey Command: “CTRL +CTRL +H +1 +ENTER”
1 2 3 4
1 2 3 4
1 2
3 4
1 2 3
1
2
3
4
1 2 3
1 2
1
4-Port KM Switch with USB 2.0 Sharing 10
Resoluon and Mouse Conguraon
System operation (continued)
//CE [SPACE] [SKM #] [SPACE] [resoluon #]
Where SKM channel can be set 1-4
Where Resoluon number is the following:
1. 1080p
2. 4K
3. 2K
4. 720p
For example: //CE 1 2
In this example we are seng channel 1 to reference 4K resoluon.
//MM [SPACE] [resoluon #] [SPACE] [x integer # (1-100)] [y integer # (1-100)]
For example: //MM 2 80 50
In this example we are seng the mouse movement according to 4K resoluon with 80 as the mouse
speed mulitplier for X and 50 as the mouse speed mulplier for Y.
The integer number set for the mouse mulplier will act as a value from 1-100%.
In the example above we are using the following:
80 for X, therefore 80 will become 80% of the mouse movement moving horizontally on the X-axis
50 for Y, therefore 50 will become 50% of the mouse movement moving vercally on the Y-axis
100 will do 100%, 65 will do 65%, 5 will do 5%, etc.
Suppose you move the mouse 100 units for the X axis and 10 units for the Y axis. The soware will
change 100 * 80% = 80 units for the X axis and 10 * 50% = 5 unit for the Y axis. This will cause the
mouse cursor to move slower.
//RL will return the channel’s current mouse mulitplier percentage and the current resoluon which will
reference the resoluon number menoned in the // C E command.
COMMAND DESCRIPTION RS-232 COMMAND
Switch resoluon //ce [SPACE] [SKM #] [SPACE] [resolution #] [ENTER]
Mouse control //mm [SPACE] [resolution #] [SPACE] [x #] [y #] [ENTER]
Mouse default posion //rl [ENTER]
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