Rextron EKU-222 User manual

Table of Contents
■Introduction ........................................................... 1
■Key Features.......................................................... 2
■Specifications........................................................ 3
■Control Modes and cable Types .......................... 4
■Packing Checklist ................................................. 5
■Product Description.............................................. 6
■Installation ............................................................. 7
■Video Compensation ............................................ 9
■Operation ............................................................... 10
■LED Indicators....................................................... 11
■Push Button: Switch to the control status ......... 13
■Hotkeys Control .................................................... 15
■Station Unit Hotkeys Control ............................... 16
■Computer Unit Hotkeys Control .......................... 17
■Cascade Configuration......................................... 18
■Appendixes............................................................ 19
Please read this manual thoroughly and follow the
Installation procedures to prevent any damage to the KVM
switch or any connecting device

------------------------ Introduction
The KVM Extender consists of a Computer Unit and a Station Unit
that is suitable to locate a keyboard/monitor/mouse set up to 150
meters away from a computer or KVM switch using an inexpensive
Category 5 UTP (unshielded twisted pair) cable. It provides an ideal
and convenient way to remotely access the computer which is
located in a secure, clean or dirty, harsh environment.
The KVM Extender is designed to enable one computer to be
controlled by one or two users. Meanwhile, it is allowed for a console
to control two computers locally and remotely. They are perfect to be
used in factory or construction areas where you want to secure your
computers and valuable data or manage them either in remote or
both in remote and local sites.
With a variety of models to choose from, you can economically
increase the flexibility of your selection and meet your needs for PS/2
or PS/2 + USB system. No software or dip switches are required, just
plug and play. With one push button, two LED indicators and simple
hotkey commands, you can manage this device easily.
There are 8 models available for your choices. Please refer to the
following Table 1: Control Status between console and computer.
Some of models are connected with 3-in-1 or 2-in-1 special cable(s).
For detailed description, please see the Specifications.
Figure 1: Connection of 3-in-1 and 2-in-1 cable
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------------------------ Key Features
 Connects the Computer Unit and Station Unit via Category 5
UTP cable
 Remotely locates the keyboard, mouse and monitor up to 150m
from a computer
 Supports PS/2 and USB + PS/2 series for flexible choice
 Video compensation can be adjusted by hotkey to ensure the
optimum signal quality for any length of cable within the limit.
 Easy to get and install the standard cable at lower cost
 Simple indication makes operation user-friendly
 Locates the computer away from your desk and work area, saving
you valuable space
 Allows two users to share a single computer both in local and
remote areas. (EKx-222, EKx-221)
 Applicable for one console to manage two computers locally and
remotely (EKx-222, EKx-212)
 Beeps confirmation for key control makes the operation easier and
cross-checked
 Supports for standard PS/2 keyboard & mice, including Microsoft
IntelliMouse
 Compatible with XGA, VGA, and SVGA system

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------------------------ Packing Checklist
 KVM Extender Station Unit x 1
 KVM Extender Computer Unit x 1
 Power Adapters – 9V DC, 600mA x 1
 User Manual x 1
 Food Pad x 2 sets
 KVM Cable (CBM180H or CBM180UH) x 1 or x 2

------------------------ Product Description
Figure 4: Indication and Connection
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------------------------ Installation
Connection Patterns
EKP222 / EKU222
EKP-12S
EKU-12S
EKP-21P
EKU-21P
EKP212 / EKU212
EKP-12S
EKU-12S
EKP-11P
EKU-11
P
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EKP221 / EKU221
EKP-21P
EKU-21P
EK-11S
EKP211 / EKU211
EKP-11P
EKU-11P
EK-11S
Figure 4: Connection patterns of KVM Extenders

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------------------------ Video Compensation
Before operating, you may like to conduct the Video Compensation
first. In this case, the hotkeys are used to adjust the Equalization on
the Remote Unit to get optimum video signal for various cable
lengths. There are four segments of various lengths of CAT 5 cables
can be chosen from. To achieve the best visibility, the following table
can be used as a reference to adjust the video compensation.
First, assure that the length of CAT 5 cable you used now. Then, use
the hotkeys to adjust the video compensation. You can press Ctrl
twice , E and F11 keys followed, and the different beeps sounded to
indicate the setup of cable length respectively. Please refer to
Operation of Hotkey Control.

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------------------------ Operation
A keyboard and mouse must be connected to the Station Unit. And
then the system conducts the emulation for local computer which can
be controlled remotely. On the other hand, it does not need to use
keyboard, mouse and monitor if you don’t want to control the
computer locally. Anyway, there are 8 different models can be
chosen to meet your needs in all aspect. Please refer to the
specifications for the model you are in hand and ready to operate in
compliance with the following procedure.

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------------------------ LED Indicators
The LEDs on the KVM Extender are showing the latest status which
indicates the linking, communication, and control situation between
Computer Unit and Station Unit.
Station Unit
Remote: Off, Local: On
1. The Computer Unit is now
taking control of the system if
the 3 LEDs (Num, Caps and
Scroll Lock ) on the keyboard
are flashing.
2. The system is waiting for
Station Unit or Computer Unit
to take control if the 3 LEDs
(Num, Caps and Scroll Lock) on
the keyboard are not flashing at
this moment.
Model LED Status Control Description
Station Unit controls its local
PC. In this mode, there are two
statuses as follows:
EKP-12S
EKU-12S
Remote: On, Local: Off Station Unit is remotely taking
control of the Computer Unit.
EK-11S Remote: On The Station Unit remotely
controls the Computer Unit
Table 3.1: LED - Control indication for Station Unit
Power Up LED Status
Model No. LED Indicators
EKP-12S Local: On
EK-11S Remote: On
EKU-12S Local: On
Table 3.2:The Initial status and indication is displayed
when KVM Extender is powered up

Computer Unit
Model LED Status Control Description
Remote: Off, Local: On
Computer Unit controls its
local PC or KVM switches. In
this mode, the Station Unit
can not take control of the
Computer Unit remotely.
Remote: On, Local: Off
Station Unit is remotely
taking control of the
Computer Unit
EKP-21P
EKU-21P
Remote/Local Flashes
alternately
(Auto Mode)
The system is waiting for
Station Unit or Computer
Unit to take control.
EKP-11P
EKU-11P Remote: On The system is controlled
remotely from Station Unit
Table 4.1: LED - Control indication for Computer Unit
Power Up LED Status
Model No. LED Indicators
EKP-21P Local/remote: Flashes alternately
EKP-11P Remote: On
EKU-21P Local/remote: Flashes alternately
EKU-11P Remote: On
Table 4.2:The Initial status and indication is displayed when
KVM Extender is powered up
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-----------------Push Button: Switch to the
control status
There is a button on the panel of Computer Unit and Station Unit
respectively, which can be pushed (switched) in sequence to select
the operation modes.
Button on Station Unit ( EKx-222 / EKx-221 )
The button on the panel of Station Unit can be pushed (switched) in
sequence to select the following two modes:
Loc
→ Com(Remote)
Local: The LED of Local is “On”. In this mode, the system controls
its local computer.
Remote: The LED of Remote is “On”. In this mode, the system
remotely controls the Computer Unit.
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Button on Computer Unit ( EKx-222 / EKx-212 )
While pressing the button, there are three modes can be chosen from
and its sequence indicates as follows:
Auto
→ Loc → Com(Remote)
Auto: 1. In this mode, the Remote and Local LEDs are flashing
alternately.
2. The system is now waiting to take control of either from
Computer Unit or from Station Unit. Once the keyboard or
mouse of Computer Unit is active, the LED of Local is on and
the LED of Remote is off. This status indicates that the
Computer Unit is now taking control of the system and vice
versa for Station Unit. In this case, the latch time period of 5,
15, 30, or 60 seconds is offered to allow the Computer unit or
Station Unit to take control again if the latch time is due and
the status returns to the “Auto” mode.
In “Auto” mode, whenever the keyboard, mouse buttons or
scroll wheel of mouse is activated, the Unit (Computer Unit
or Station Unit) immediately takes control of the system.
Local: The LED of Local is “On”. In this mode, the system is being
controlled by the Computer Unit. In this case, the Station
Unit can learn this status from the flashing of 3 LEDs (Num,
Caps and Scroll Lock) on the keyboard.
Remote: The LED of Remote is “On”. In this mode, the system is
remotely controlled by the Station Unit.
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-----------------Hotkeys Control
Hotkey command is a short keyboard sequence to select a computer,
to activate computer scan, and so forth. The KVM Extender
interprets keystrokes for hotkeys all the time. A hotkey sequence
starts with two left Ctrl keystrokes followed by one or two more
keystrokes. A built-in buzzer generates a high-pitched beep for
correct hotkey command, while one short and one long beeps are
sounded for wrong commands. Thus, the bad key commands will not
be forwarded to the selected modes.
There is an unique Hotkey command of Ctrl + Ctrl + Alt+E you
should be well aware when the KVM Extenders are connected to
other KVM Switches.
To switch to this mode, press left Ctrl twice, hold Alt and press E
key(press both keys simultaneously). This function is used to prevent
from misunderstanding once the system is connected to Rextron’s
KVM Switches. Thus, the user can choose either the control mode of
KVM Extender or the number of computer connected to the KVM
Switches.

--------------Station Unit Hotkeys Control
Hotkey Commands
without Eioptional With Eioptional Function Description
＊Ctrl + Ctrl + TiCtrl + Ctrl + TiToggle switch selects Loc
or Com mode
Ctrl + Ctrl + Esc Ctrl + Ctrl + Esc Escape from hotkey mode
Ctrl + Ctrl + Alt+E Ctrl + Ctrl + Alt+E
One beep: hotkey control
without pressing Ei
Two beeps: need to press
Eifor hotkey control
＊Ctrl + Ctrl + 1iCtrl + Ctrl + E + 1i
Select the computer 1 via
KVM Switch
Loc mode selection
＊Ctrl + Ctrl + 2iCtrl + Ctrl + E + 2i
Select the computer 2 via
KVM Switch
Rem mode selection
＊Ctrl + Ctrl + F2 Ctrl + Ctrl + E + F2 Toggle switch for Loc or
Com
Ctrl + Ctrl + F4
(Keyboard speed
selection)
Ctrl + Ctrl + E + F4
(Keyboard speed
selection)
To adjust typematic rates of
keyboard, the KVM Extender
generates 1 to 4 beeps
corresponding to 6, 12, 20, and
30 characters/sec respectively.
Ctrl + Ctrl + F11
(Video Compensation
Adjustment)
Ctrl + Ctrl + E + F11
(Video Compensation
Adjustment)
To adjust video
compensation, the KVM
Extender generates 1 to 4
beeps corresponding to
cable length of 0 ~ 40, 40 ~
80, 80 ~ 120, 120 ~ 150
meters respectively.
Ctrl + Ctrl + F12 Ctrl + Ctrl + E + F12 Mouse resynchronized
(for PS/2 only)
＊The hotkey commands are effective for models EKx-222 and EKx-212 only.
Table 5: Hotkey control for Station Unit
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---------Computer Unit Hotkeys Control
＊All hotkey commands are effective for models EKx-222 and EKx-221 only.
Table 6: Hotkey control for Computer Unit
 Alt+E :
Hold Alt and press Ekey(press both keys simultaneously).
 Mouse resynchronization:
When the mouse can not work normally, conduct this function and make it
synchronized with your system.
Hotkey Commands
without Eioptional with Eioptional Function Description
Ctrl + Ctrl + TiCtrl + Ctrl + TiToggle switch selects
Auto-Loc-Rem mode
Ctrl + Ctrl + Esc Ctrl + Ctrl + Esc Escape from hotkey mode
Ctrl + Ctrl + Alt+E Ctrl + Ctrl + Alt+E
One beep: hotkey control
without pressing Ei
Two beeps: need to press
Eifor hotkey control
Ctrl + Ctrl + 1iCtrl + Ctrl + E + 1i
Select the computer 1 via
KVM Switch
Loc mode selection
Ctrl + Ctrl + 2iCtrl + Ctrl + E + 2i
Select the computer 2 via
KVM Switch
Rem mode selection
Ctrl + Ctrl + 3iCtrl + Ctrl + E + 3i
Select the computer 3 via
KVM Switch
Auto mode selection
Ctrl + Ctrl + F3 Ctrl + Ctrl + E + F3 Auto mode latch time: 5,
15, 30, 60 seconds
Ctrl + Ctrl + F4
(Keyboard speed
selection)
Ctrl + Ctrl + E + F4
(Keyboard speed
selection)
To adjust typematic rates of
keyboard, the KVM Extender
generates 1 to 4 beeps
corresponding to 6, 12, 20, and
30 characters/sec respectively.
Ctrl + Ctrl + F12 Ctrl + Ctrl + E + F12 Mouse resynchronization
(for PS/2 only)

-----------------Cascade Configuration
The KVM Extender can be connected to the KVM Switch in
compliance with the “Cascade Configuration”. In this case, there
are some connection patterns may be conducted in a certain
situations. However, to prevent from any conflict via hotkey
commands among the connections, the E key is added and followed
behind the Ctrl + Ctrl, which will enable you to manage the KVM
Extender straightly. Moreover, please refer to the “Notice of
Cascade Connection” stressed below for better management of
your system.
Notice of Cascade Connection
1. The external power source is required to supply enough power to
the Computer Unit of KVM Extender when connecting to the
KVM Switch. In this case, you can purchase optional power
adapter DC9V, 600mA from your local dealers.
2. To prevent from wrong keystrokes of control keys, for Station
Unit of KVM Extender, the parameters such as Cable Length,
Keyboard Speed, Push Button Control should be set up in
advance before connecting to the KVM Switch.
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