REXROTH FXDAS-2022 User manual

1
Table of Contents
■ Introduction………………………………………………….……..2
■ Features……………………………………………………………..3
■ Packing Checklist……………………………………….………...4
■ Product Description……………………………………………....5
■ Installation………………………………………………………….7
■ Connection Pattern............................................................7
■ LED Indicators……………………………………………………..10
■ Push-Button Control……………………………………………..11
■ Hotkey Control………………………………………………........13
■ Hotkey Commands…………………………………………...14
■ Alternative Hotkey Control………………………………………16
■ Cascade Configuration……………………………………..…....17
■ Mask Hotkey Switch………………………………………….19
■ Serial Configuration…….……………………………...…….......20
■ Video Adjustment…………………………………………………21
■ Additional Functions……………………………………………..23
■ Blu-ray Ready…………….……………………………….......23
■ HDCP Compatibility.....………………………………….…...23
■ Appendices…………………………………………………...……24
■ Appendix A: Cable Requirements...………………….…...24
■ Appendix B: Fiber Optics Cable...…………………….…...24
■ Appendix C: Optical Fiber Installation Considerations....25
■ Specifications…………………………………………………..…27
Please read this manual thoroughly and follow the Installation
procedures to prevent any damage to the KVM switch or any connecting
device
＊ The final specifications are based on the actual product.
＊ Features and functions may be added or changed after the manual was written.
Please visit our website to download the latest version of manual for reference.
＊ T0 prevent damages to your installations, make sure that all devices are properly grounded.
＊ Never disassemble the enclosure for ay purpose. This may cause personal injury and/or
property damage. It contains no user-serviceable parts; please call your local deal
whenever a malfunction is suspected
RoHS

2
------------------------ Introduction
Fiber DVI / HDMI KVM Extender consists of a Console Unit and a Computer Unit
allowing users to extend the remote access/control up to 2,000 meters away from a
computer or KVM Switch with only a single fiber optics cable. The DVI/HDMI digital
display can be optimized up to the maximum resolution of Full HD (1920 x 1080) /
WUXGA (1920 x 1200) / UXGA (1600 x 1200), and audio display is compatible in
HDMI linking. The dedicated Hotkey Mask feature eliminates all the hotkey control
barriers caused by mixed combinations of KVM Extender(s) and KVM Switch(es)
in cascading environments. The Extender can mask up itself through the hotkey
mask, enabling you to bypass the cascaded Extender level and directly configure
the cascaded KVM Switch by using the keyboard/mouse connected to the
Extender, as if you were virtually sitting in front of the KVM Switch.
The KVM Extender features everything you need for controlling computers
remotely, which include dual-user access, control multiple computers by cascading
KVM Switch(es), easy computer access through push button, hotkeys, and mask
hotkeys, LED indicators for real-time status monitoring, serial interface for serial
equipments and data communications, HDCP compliant, Blu-ray ready, audio jack
(speaker + Mic) for audio display. Moreover, it is fully compatible with most of the
popular monitor screen resolution such as XGA, SXGA, UXGA, WSXGA….Full HD,
WUXGA system.
The Fiber KVM Extender has been common used in applications that require
greater distance, high speed transmission, real-time high video resolution, security,
and noise immunity. It is economical and scalable design for growth-oriented
enterprises, which you can easily expand the multiple computer controls by adding
additional Extender(s) or cascading the Extender(s) with KVM Switch(es) whenever
you need.
You can secure the computers and valuable data or manage them both in remote and
local sites. No software or DIP switches are required, just plug and play. It is a perfect
solution for a multitude of KVM extension environment including applications in medical,
military, bank, development lab, educational institution, industrial, as well as high
electromagnetic interference (EMI) / radio frequency interference (RFI) environments.

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------------------------ Features
Connect the Extender pair via SC to SC duplex Multi-mode fiber optics cable
Remotely locate the keyboard, mouse and monitor up to 2000 meters away
from a computer (or a KVM switch) with the maximum resolution of Full HD
(1920 x 1080) / WUXGA (1920 x 1200) / UXGA (1600 x 1200).
Support USB console
Hotkey functions and push button for easy computer access
Mask Hotkey simplify multiple computer control in cascade environment
Dual-user access to share multiple computers
High speed and long distance transmission by optical system
Support serial interface for instant data transfer
Fully compatible with DVI and/or HDMI standard by DDWG
HDCP compliant and Blu-ray ready (for FXDAS-2022 and FXMAS-2022 only)
Completely free of Electromagnetic Interference (EMI)
Fully compatible with all the KVM Switch system
Ideal for professional audio/ video applications
Optional fiber only system without DDC function (pseudo DDC signal can be
transmitted for EDID information.)
Video is transmitted digitally for zero signal loss
Compatible with most of the popular screen resolution to XGA, SXGA, UXGA,
WSXGA ….Full HD, WUXGA system

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------------------------ Packing Checklist
1. KVM Extender Console Unit x 1
2. KVM Extender Computer Unit x 1
3. Power Adapter with necessary AC Cord
Or x2
Plug-in Power Adapter
4. User’s Manual x 1
5. Foot Pad Set x 2
6. 30-meter Multi-mode SC-SC duplex Fiber Optic Cable x 1
7. KVM cable x 2
8. Rack Mount Bracket with necessary screws x 2 sets (option)
Optional
1. Null Modem Cable (see Appendices)
★Ordering Information
Model Name + C = Model with necessary Extender Cables
Example: FXDAS-2022C
= ( FXDAS-012SC + FXDAS-021PC )+ SC-SC duplex Fiber Optics Cable x 1
Example: FXMAS-2022C
= ( FXMAS-012SC + FXMAS-021PC )+ SC-SC duplex Fiber Optics Cable x 1
★Hardware Requirements
1. Computer(s) with USB port(s) and DVI / HDMI Video output port
2. USB Keyboard / Mouse for console controlling
3. Microphone, Speakers, and HDCP compliant Monitors with DVI/HDMI interface for
the HDCP video source (optional)
4. DVI / HDMI KVM Cable(s)
5. Fiber cable
6. Serial Cable (for Serial Device Applications)
Input
(Video + Audio)
Output
(Video + Audio)
Serial
Interface
Mask Hotkey
Switch
HDCP
Support
FXDAS-1022 DVI x 2
Audio Jack Set x 2
DVI x 2
Audio Jack Set x 2 DTE + DCE x 2 N/A
FXDAS-2022 DVI x 2
Audio Jack Set x 2
DVI x 2
Audio Jack Set x 2 DTE + DCE x 2 Yes
FXMAS-2022 HDMI x 2
Audio Jack Set x 2
HDMI x 2
Audio Jack Set x 2 DTE + DCE x 2 Yes

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------------------------ Product Description
The following figures show typical applications of KVM Extender series. The model
you have purchased may be slightly different from those described in the
illustrations.
Console Unit FXDAS-012S / FXMAS-012S
Computer Unit FXDAS-021P / FXMAS-021P

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F1 RX: Data Receiving status
F2 Serial LED Indicator TX: Data Transmitting status
F3 Remote LED Indicator Control Status Indication (see LED Indicators chapter)
F4 Local LED Indicator Control Status Indication (see LED Indicators chapter)
F5 Power/Connectivity
LED Indicator
Green: Power On
Blue: Power On and connect to a powered on extender unit
F6 Push Button Select Control Status
C1 DTE Interface Connect to a serial device
C2 DVI / HDMI Connector Connect to the monitor
C3 USB Connectors Connect to the console mouse / keyboard and mouse combo
C4 Audio Jack Connect to Speakers and MIC
C5 Mask Hotkey Switch
(see figure below)
OFF: Standard mode (see Hotkey Control chapter)
ON: Disable the KVM Extender hotkey function
P1 DCE Interface Connect to a Computer
P2 DVI / HDMI Connector Connect to Local PC’s Video output
P3 USB-B Connector Connect to Local PC’s USB port for Keyboard/Mouse operation
P4 Audio Jack Connect to Local PC’s Audio port
O1 SC-SC Fiber Interface Connect to the SC-SC duplex Multi-mode fiber optics cable
A1 Power Supply Apply to the appropriate power source
OFF ON
Hotkey Mask Off Hotkey Mask On
Direct control the computer
Console Unit controls its local PC Computer Unit controls its local PC
Remote Control applied Remote Control enabled

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------------------------ Installation
Caution: Do not stare into beam or view directly into the ends of any fiber optic
cables. Exposure to invisible laser radiation may result. The laser beam
can cause injury to the eye.
Before Installation
zDetermine where the computer and Extender Unit will be located and set up
zUse SC to SC duplex Multimode fiber optics cable (50/125 or 62.5/125) for the
interconnection between Computer and Console Unit.
zMake sure that the Fiber cable length is long enough (not exceed 2,000 meters)
for the connection between the Computer Unit and the Console Unit to prevent
having to splice fiber. Try to complete the installation in one pull
●Prior to the installation, it is important to make sure that all devices you will
connect to this system are properly grounded and powered off.
●The KVM Extender is HDCP compliant and required to use the HDCP-
compliant display when it is connecting to the HDCP video source.
●Never attempt to disassemble or reassemble the enclosure for ay purpose. This
may cause personal injury and/or property damage.
Connection Patterns
The KVM Extender capability can be dynamically enhanced by using the KVM
Switch(es) to expend the number of control on computers/servers, in which users
can connect the KVM Switch to the Console Unit or Computer Unit, connect the
computer to the Computer Unit and/or Console Unit, and connect the Console
Unit to the Computer Unit with the appropriate fiber cable. Please follow the
guidelines below for the system connection.
Console Side
Use a DVI (or HDMI) cable for the connection between Unit and the monitor display.
Plug a USB keyboard and a USB mouse into the Console’s USB ports.
If needed, plug a set of audio jack from speaker and microphone into the
Console’s speaker port and microphone port respectively
Computer Side
Use a DVI (or HDMI) cable for the connection between the Video port (DVI/ HDMI
connector) on the computer side of the Unit and the video output port of the
Computer.
Use a USB A-B cable to connect the Unit’s USB port (B connector, square
connector) and the USB port on the computer (A connector, flat connector).
If needed, use a set of audio cable to connect the speaker port and microphone
port between the unit and the computer.

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If needed, connect a serial cable from the computer to the DCE connector on the
Computer Unit, plug the serial device (DCE) into the DTE connector on the
Computer Unit, and plug the serial device (DCE) into the DTE connector on the
Console Unit.
Use a SC to SC duplex multi-mode fiber optics cable for the SC-SC fiber port
connection between the Console and Computer Unit. After all device connections
are completed, connect the provided power cord into an appropriate power source
and plug the opposite end into the power connector on the Unit to power up. (Refer
to the following figure for the connection)

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FXDAS-012S/ FXDAS-021P
2 Consoles →2 Computers
FXMAS-012S/ FXMAS-021P
2 Consoles →2 Computers
FXDAS-012S
FXDAS-021
P
FXMAS-012S
FXMAS-0
2
1
P

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------------------------ LED Indicators
The LEDs on the KVM Extender show the real-time status which indicates the linking,
communication, and control situation between the Computer Unit and Console Unit.
User can identify the present status and switch control through the LED indicators and
push-button on the top panel respectively as the following descriptions:
1. Press the push-button on Console Unit to select “Local ON” or “Remote ON”.
2. Press the push-button on Computer Unit to select “Local ON”, “Remote ON”
or “Auto Mode”.
LEDs on Console Unit
Model LED Status Control Description
Remote: Off, Local: On* zConsole Unit controls its local PC.
FXDAS-012S/
FXMAS-012S Remote: On, Local: Off
Console Unit is enabled to access to the
Computer Unit. In this state, either of the
following two statuses can be observed:
z3 LEDs (Num, Caps and Scroll Lock) on
the keyboard are flashing: The
Computer Unit is now taking control of
the system.
z3 LEDs (Num, Caps and Scroll Lock) on
the keyboard are NOT flashing: the
system is waiting for Console Unit or
Computer Unit to take control.
●By default, the LED status is set to Local “ON” when powering up
LEDs on Computer Unit
Model LED Status Control Description
Remote: Off, Local: On
zComputer Unit controls its local PC (or
cascaded KVM switches). In this mode,
the Console Unit can not take control of
the Computer Unit remotely.
Remote: On, Local: Off zConsole Unit can remotely taking control
of the Computer Unit.
FXDAS-021P/
FXMAS-021P
Remote / Local Flashes
alternatively (Auto Mode)
*
zThe system is waiting for Console Unit
or Computer Unit to take control. The
control priority is on the first come, first
served basis
* By default, the LED status is set to Auto when powering up

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-----------------Push-Button Control
A Push-Button on the respective front panel of Computer Unit and Console Unit
can be used to select the control mode as follows.
Push-Button on Console Unit
The button on the front panel of Console Unit can be used to switch mode
between Local and Remote in the sequence as the diagram shown below:
Local On → Remote On
Local : The LED “Local” lights up, the Console Unit is taking control on its
local computer.
Remote : The LED “Remote” lights up, the Console Unit can remotely take
control on the Computer Unit.
Push-Button on Computer Unit
The button on the front panel of Computer Unit can be used to switch mode
among Local, Remote, and Auto in the sequence as the diagram shown below:
Auto → Local On → Remote On
Auto : 1. The Local and Remote LEDs flash alternately.
2. The system is now waiting for the Console or Computer Unit to take
control. The control priority is on the first come, first served basis.
For example, once the keyboard or mouse attached to Computer Unit is
active, the Local LED will light up and the Remote LED will light off. This
status indicates that the Computer Unit is now taking control on its local
computer (or cascaded KVM Switch), and vice versa for Console Unit. In
Auto mode, the duration of latch time for taking control can be preset to 5,
15, 30, or 60 seconds via hotkeys, which allows the Computer or Console
Unit to resume control again via any keystroke or mouse activity if the latch
time is due and the status returns to the “Auto” mode.
In “Auto” mode, whenever, any activity from the keyboard, mouse
buttons or mouse scroll wheel is detected, the Unit (Computer Unit or
Console Unit) immediately takes control of the system.
Local : The LED “Local” lights up, the Computer Unit is taking control on its
local computer (or cascaded KVM Switch).In this case, the user in
Console Unit can identify this status from the 3 LEDs ( Num, Caps and
Scroll Lock ) flashing on the keyboard.
Remote : The LED “Remote” lights up, the system can be remotely controlled by
the Console Unit.

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The following figure indicates the order in which the switch control through Push-
Button on the top panel.

13
-----------------Hotkey Control
A hotkey command is a short key sequence to select a computer, activate computer
scan, and so forth. The KVM Extender interprets keystrokes for hotkeys all the time.
Throughout this user manual, the following terms are used to identify the common
states during hotkey configurations:
Standard Mode
The state of the KVM Extender without any connection to any KVM Switch.
Compatibility Mode
The state of the KVM Extender with connection(s) to KVM Switch(es).
The Command for Mode Switching
Users can switch mode between Standard and Compatibility through inputting the
hotkey command [left Ctrl + left Ctrl + Alt + E ], and then one beep is generated
as the confirmation of Standard Mode; otherwise, two beeps is generated as the
confirmation of Compatibility Mode. ( Alt + E : hold Alt down and press Ekey)
Leading Code
In Standard Mode, a hotkey command starts with the leading code
[left Ctrl + left Ctrl ] followed by one or two more keystrokes.
In Compatibility Mode, a hotkey command starts with the leading code
[left Ctrl + left Ctrl + E] followed by one or two more keystrokes.
The built-in buzzer generates a high-pitched beep for correct hotkey command, otherwise,
one short and one long beep are generated for a bad command, in which, the bad key
command won’t be sent to the extender unit or the selected computer.
Mask Hotkey Switch
The hotkey commands of KVM Switches vary among models, which may cause
hotkey errors, unpredictable result between the Extender Unit and mixed types of
KVM Switch that connect to each other. The Hotkey Mask extremely simplifies the
hotkey control in cascade architecture; through the mask ON, users can bypass the
Extender Unit and directly apply the KVM Switch built-in hotkey commands to
access and configure the cascaded computer(s) / KVM Switch(es). More details
about this feature can be found in the following section “Mask Hotkey Switch”.
Alternative Hotkey Control
Press and Hold push button two seconds followed by one keystroke can be applied as
the alternative to the leading code. The KVM Extender is incapable of conducting any
hotkey controls when its hotkey function is masked (Hotkey Mask Switch “ON”); this
alternative control is especially useful in this state. For the details of hotkey commands,
please check the following sections “Hotkey Commands” and “Alternative Hotkey
Control”.

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Hotkey Commands
zPrior to any hotkey command input, please enable either of the following settings:
Standard Mode by inputting the hotkey command [left Ctrl + left Ctrl + Alt + E ] and then
one beep should be generated as the confirmation.
Compatibility Mode by inputting the hotkey command [left Ctrl + left Ctrl + Alt + E ]and
then two beeps should be generated as the confirmation; or
Users can switch the mode alternatively by repeating this hotkey command.
zOnly the key Ctrl located on the lower-left corner of the keyboard is valid for hotkey commands.
zThe hotkey command will be automatically time-out, if there is no activity detected by the
keyboard within 3 seconds after the leading code input.
zWhen the mask hotkey switch is set to “ON”, the Extender Unit masks up itself in this state,
users can sit in front of the Extender and directly apply the KVM Switch built-in hotkey
commands to configure the computers that attached to the KVM Switch as if the user was
virtually sitting in front of the KVM Switch.
Console Unit Hotkey Commands
Mask Hotkey: OFF Mask Hotkey: ON
Hotkey Alternative
Hotkey Hotkey Alternative Hotkey
Function Description
Ctrl + Ctrl +Alt+E N/A N/A N/A
Cascading status selection
One beep: enable Standard Mode
Two beeps: enable Compatibility Mode, and the user at
Console Unit accessing to the KVM switch
that is connecting to Computer Unit.
[Leading Code]+Esc N/A N/A N/A Escape from hotkey mode
[Leading Code]+ T N/A N/A N/A
[Leading Code]+ F2 N/A N/A N/A
Mode selection in Sequence
switch console control between Local Computer and
Remote Computer
[Leading Code]+ 1 N/A N/A N/A
Local mode selection
enable the user at the Console Unit accessing to
the computer (KVM Switch) that connects to the
Console Unit.
[Leading Code]+ 2 N/A N/A N/A
Remote mode selection
enable the user at the Console Unit exclusive
accessing to the computer ( KVM Switch )that connects
to the Computer Unit. (only if the Computer Unit is
in Remote or Auto mode). Disable Computer Unit
user accessing to the Computer Unit during this
mode.
[Leading Code]+ Q + L [BTN]+ Q + L
(2 Sec.) [BTN]+ Q + L (2 Sec.)
Set video equalizer to level Low.
Set video equalizer on the monitor DVI display of the
Console Unit the level of Low.
[Leading Code]+ Q + A [BTN]+ Q + A
(2 Sec.) [BTN]+ Q + A (2 Sec.)
Set video equalizer to level Enhanced.
Set video equalizer on the monitor DVI display of the
Console Unit to the level of Enhanced. (The factory
default)
[Leading Code]+ Q + H [BTN]+ Q + H
(2 Sec.) [BTN]+ Q + H (2 Sec.)
Set video equalizer to level High.
Set video equalizer on the monitor DVI display of the
Console Unit to the level of High.

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Computer Unit Hotkey Commands
Mask Hotkey: OFF Mask Hotkey: ON
Hotkey Alternative
Hotkey Hotkey Alternative
Hotkey
Function Description
Ctrl + Ctrl + Alt+E N/A N/A N/A
Cascading status selection
One beep: enable Standard Mode
Two beeps: enable Compatibility Mode, and the users at
Computer Unit accessing to the KVM switch
that connects to the Computer Unit.
[Leading Code]+Esc N/A N/A N/A Escape from hotkey mode
[Leading Code]+ TiN/A N/A N/A
Mode selection in sequence
Toggle switch to select Auto , Local On , or
Remote On mode.
[Leading Code]+ 1 N/A N/A N/A
Local mode selection
enable the user at Computer Unit exclusive accessing to
the PC (KVM Switch) that connects to Computer Unit.
Disables the Console Unit user accessing.
[Leading Code]+ 2 N/A N/A N/A
Remote mode selection
enable the user at Console Unit exclusive accessing to
the PC (KVM Switch) that connects to Computer Unit.
Disables the user at the Computer Unit accessing to the
connected PC (KVM Switch).
[Leading Code]+ 3 N/A N/A N/A Auto mode selection
[Leading Code]+ F3 [BTN]+ F3
(2 Sec.) N/A [BTN]+ F3
(2 Sec.)
Latch time selection
Auto mode latch time setting, the extender generates 1
to 4 beeps to indicate the duration of latch time: 5, 15, 30,
60 seconds respectively.
[Leading Code] + V + D [BTN]+ V + D
(2 Sec.) N/A [BTN]+ V + D (2 Sec.)
DVI display mode setting (factory default setting)
Set the display on both Console and Computer Units to
DVI mode that is incapable of carrying any audio signals.
[Leading Code] + V + M [BTN]+ V + M
(2 Sec.) N/A [BTN]+ V + M (2 Sec.)
HDMI display mode setting
Set the display on both Console and Computer Units to
HDMI mode that is capable of carrying high-definition
digital audio and video signals.
NOTE: Standard Mode denotes the state of the KVM Extender without additional
connection to any KVM switch(es).
Compatibility Mode denotes the state of the KVM Extender with connection to
KVM Switch(es).
NOTE: [Leading Code] denotes
in Standard Mode, the hotkey sequence [left Ctrl + left Ctrl ]
in Compatibility Mode, the hotkey sequence [left Ctrl + left Ctrl + E ]
NOTE: [BTN] denotes Press and Hold the Push Button in the front panel for two seconds
NOTE : After Press and Hold the Push-Button two seconds, the hotkey state will be
automatically time-out, if
1. There is no activity detected by the keyboard within 6 seconds.
2. Press the button Esc once to escape from the hotkey state.
3. Press the Push-Button once to escape from the hotkey state.

16
------------Alternative Hotkey Control
No matter whether the mask hotkey switch is set to ON or OFF, users can Press
and Hold the Push-Button on the front panel for two seconds instead of the leading
code [ Ctrl + Ctrl ] or [ Ctrl + Ctrl + E ] for some specific hotkey control on Extender
Unit as the follows.
Alternative Hotkey Control on the Computer Unit:
zLatch Time Selection
Select the duration of latch time: 5, 15, 30, or 60 seconds.
Press & Hold Push-Button 2 Sec. + F3
zDVI Mode for Monitor Display
Set the display(s) of both Console and Computer Units to DVI mode that is
incapable of carrying any audio signals. (Perform this setting before creating
the connection between the Extender Units and/or the KVM Switch(es))
Press & Hold Push-Button 2 Sec. + V + D
zHDMI Mode for Monitor Display
Set the display(s) on both Console and Computer Units to HDMI mode that is
capable of carrying high-definition digital audio and video signals. (Perform this
setting only on the Computer Unit before creating the connection between the
Extender Units and/or the KVM Switch(es))
Press & Hold Push-Button 2 Sec. + V + M
NOTE: By factory default, the display mode on Console and Computer Units is set
to DVI mode.

17
-----------------Cascade Configuration
The KVM Extender can be connected to the KVM Switch in compliance with the
“Cascade Configuration”. In this case, there are some patterns of connection may
be conducted in specific situations.
However, to prevent from any conflict via hotkey commands in the cascade
configuration, the hotkey commands prefixed with Compatibility mode leading code
[left Ctrl + left Ctrl + E ] can be applied for directly accessing to the KVM
Extender.
Even better than that, instead of adding an E key for hotkey control in compatibility
mode, a shortcut through Hotkey Mask totally simplifies the cascade hotkey
configuration.
The highly expandable cascade architecture allows easily adding additional servers
/computers, please read the following important information before the Cascade
Connection begins.

18
Before the Cascade Connection
Before connecting the KVM Switch to the Console or Computer Unit, make sure the
following statuses have been set up.
1. Determine either DVI or HDMI monitor display will be used, and then, on the
Computer Unit, set monitor display mode to DVI (Press and Hold Push-Button
2 seconds +V + D ) or in HDMI (Press and Hold Push-Button 2 seconds +
V + M ) according to the monitor display attached to the Console Unit. (The
signal from Computer Unit is transmitted to Console Unit in single direction only,
and is displayed on the monitor attached to the Console Unit. It is not necessary
to make this setting on the Console Unit)
2. Enable Compatibility Mode by inputting the hotkey command [left Ctrl + left Ctrl
+ Alt + E ]and then two beeps should be generated as the confirmation. In the
Compatibility Mode, set the control to (Local or Remote) by inputting the hotkey
[left Ctrl + left Ctrl + T ] .
OR
Set the Mask Hotkey Switch ON or OFF according to the cascade correlation
algorithm and user preference. (If the KVM Switch is directly connected to
Computer Unit, switch ON the Mask Hotkey on both Units. If the KVM Switch is
directly connected Console Unit, switch ON the Mask Hotkey on Console Unit.)
Connect the KVM Switch to the Console or Computer Unit after above set up
completed.

19
Mask Hotkey Switch (Shortcut for Cascade Hotkey Configuration)
A Mask Hotkey Switch located at the rear panel of both Console Unit and Computer
Unit can be slid ON/OFF to switch hotkey control between the cascaded KVM Switch /
connected Computer accordingly. The factory default is set to “OFF”.
Mask Hotkey Switch In cascade architecture In non-cascade architecture
“ON”
The Extender Unit masks up
itself, as if users sit in front of
the KVM Switch to directly
configure the computers
attached to the KVM Switch
by applying the KVM Switch
built-in hotkey commands.
The Extender Unit hotkey
function is disabled.
“OFF”
The Extender Unit is mask
off, users can configure the
computer attached to the
KVM Switch by applying the
KVM Extender built-in hotkey
command prefixed with the
cascade leading code [ left
Ctrl + left Ctrl + E ].
Users can configure the
computer attached to the
Extender Unit by applying the
KVM Extender built-in hotkey
command prefixed with the non-
cascade leading code [ left
Ctrl + left Ctrl ].
Example of Mask Hotkey set to “ON” in cascade architecture
An IT administrator is sitting in front of the Console Unit, he pre-set the Console Unit to remote
mode for accessing to the KVM Switch that is attached to Computer Unit, then slide “ON”the
Mask Hotkey Switch on the Console Unit, after that, he can on use the Console Unit directly
configuring the computer that is attached to the KVM Switch. Please also refer to the section
“Hotkey Commands” for more information.
LED: Remote on
Mask Hotkey: on
OFF ON
Hotkey Mask Off Hotkey Mask Up
Direct control the computer

20
-----------------Serial Configuration
The KVM Extender over Fiber Optics provide serial ports on both the Console and
Computer Units, which can be connected to serial terminal and serial devices for
real-time data transmission and serial device configurations between the connected
Console and Computer Units, such as POS, Barcode Scanners, Card Readers,
Touch screens….as well. The serial passageway allows data to be sent from serial
terminal attached to the serial port of the Extender Unit to the PC. Data receiving
at the serial port of the Console Unit will be made available to the device attached
to its serial port that can be remotely accessed from the connected Computer Unit .
Serial data is passed in real-time and is not buffered for subsequent reading.
The serial terminal baud rate setting must match the serial baud rate of the
connected serial device, as figure shown below:
*NOTE : Serial Device A →PC A (Serial Terminal)
The baud rate setting of Device A and PC A should be the same.
Control Status Communication LED Indicator
Tx: Green
Console Unit Local Device A - PC A Rx: Green
Tx: Green
Computer Unit Local Device B - PC B Rx: Green
Tx: Green
Flash Red (Processing)
Console Unit
Computer Unit
Remote
Remote Device A - PC B Rx: Green
Flash Red (Processing)