NTI RACKMUX-D17-N-16DVIHD User manual

MAN097 Rev Date 6/18/19
RACKMUX-D17-N-4/8/16DVIHD
KVM Drawer with USB KVM Switch
and DVI Video Support
Installation and Operation Manual
RACKMUXSeries

TRADEMARK
RACKMUX is a registered trademark of Network Technologies Inc in the U.S. and other countries.
COPYRIGHT
Copyright © 2008-2019 by Network Technologies Inc. All rights reserved. No part of this publication may be reproduced, stored
in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written consent of Network Technologies Inc, 1275 Danner Drive, Aurora, Ohio 44202.
CHANGES
The material in this guide is for information only and is subject to change without notice. Network Technologies Inc reserves the
right to make changes in the product design without reservation and without notification to its users.

TABLE OF CONTENTS
INTRODUCTION.............................................................................................................................................................1
Models Available.......................................................................................................................................................1
Types of CPUs Supported........................................................................................................................................1
Features....................................................................................................................................................................1
Option .......................................................................................................................................................................1
MATERIALS....................................................................................................................................................................2
FEATURES AND FUNCTIONS.......................................................................................................................................3
RACKMUX Single-Person Installation ............................................................................................................................4
Optional Telco 2-Post Mounting..................................................................................................................................7
Connect The Cables....................................................................................................................................................8
RS232 Connection....................................................................................................................................................9
Power-Up Sequence....................................................................................................................................................9
USING THE UNIMUX....................................................................................................................................................10
Front Panel Control....................................................................................................................................................10
Keyboard Control.......................................................................................................................................................10
Command Mode........................................................................................................................................................10
Scan Mode..............................................................................................................................................................11
Broadcast Mode......................................................................................................................................................11
Normal Mode ..........................................................................................................................................................11
No Sun Sleep Mode................................................................................................................................................12
Select Country Code...............................................................................................................................................12
RS232 CONTROL.........................................................................................................................................................13
RS232 Connections and Configuration.....................................................................................................................13
Remote Connection................................................................................................................................................13
Baud Rate...............................................................................................................................................................13
Unit Address and Loop Back..................................................................................................................................14
Command Protocol.................................................................................................................................................15
NTI Switch Control Program For Windows 9X, NT, 2000, XP,Vista, 7,8 and 10 ......................................................17
SerTest- RS232 Interface Test Program...................................................................................................................17
Main Options...........................................................................................................................................................17
DISPLAY FUNCTIONS.................................................................................................................................................19
Standard Controls......................................................................................................................................................19
OSD Control Menu ....................................................................................................................................................20
OSD Main Menu .....................................................................................................................................................20
Brightness/Contrast Menu......................................................................................................................................20
Setup Menu.............................................................................................................................................................21
OSD Control Menu- 17 Inch Hi-Resolution Model (-HR)...........................................................................................22
OSD Main Menu .....................................................................................................................................................22
KEYBOARDS................................................................................................................................................................24
Keyboard Configuration.............................................................................................................................................24
Keyboard-To-Computer Translation..........................................................................................................................24
Translation Tables ..................................................................................................................................................24
TROUBLESHOOTING..................................................................................................................................................25
RACKMUX SPECIFICATIONS .....................................................................................................................................26
General Specs...........................................................................................................................................................26
LCD – 17”...................................................................................................................................................................26
Display Controller: DVI ..............................................................................................................................................26
OSD Control Board....................................................................................................................................................26
LCD – 17” Hi-Resolution .............................................................................................................................................26
Keyboard....................................................................................................................................................................27
Touchpad...................................................................................................................................................................27
INDEX............................................................................................................................................................................27
WARRANTY INFORMATION........................................................................................................................................27

TABLE OF FIGURES
Figure 1- Adjustable rail assemblies..................................................................................................................................................4
Figure 2- Install the cage nuts............................................................................................................................................................5
Figure 3- Install the rail assemblies ...................................................................................................................................................5
Figure 4- Check spacing of the rails ..................................................................................................................................................6
Figure 5- Rail guides..........................................................................................................................................................................6
Figure 6- Apply remaining screws to complete installation ................................................................................................................7
Figure 7- Mount to Telco post with optional mounting brackets.........................................................................................................7
Figure 8- Connect each CPU.............................................................................................................................................................8
Figure 9- Connect the power cord .....................................................................................................................................................8
Figure 10- Connect RS232 control terminal.......................................................................................................................................9
Figure 11- CPU Select switches, status LEDs and Mode LEDs ......................................................................................................10
Figure 12- Country Codes for international SUN keyboards............................................................................................................12
Figure 13- RS232 DIP switches.......................................................................................................................................................13
Figure 14- RS232 connection with Matrix-Y-1 cable........................................................................................................................14
Figure 15- Pinout of Matrix-Y-1 cable ..............................................................................................................................................15
Figure 16- RS232 Communication Illustrated..................................................................................................................................15
Figure 17- OSD Controls .................................................................................................................................................................19
Figure 18- U.S. (English) keyboard with numeric keypad................................................................................................................24

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
1
INTRODUCTION
The RACKMUX-D17-N-8DVIHD is a KVM Drawer with USB KVM Switch (RACKMUX) that combines a rackmount 17" TFT/ LCD
DVI monitor, keyboard, touch pad, and USB KVM switch (UNIMUX) in a space-saving 1RU industrial strength drawer. The
RACKMUX is equipped with a built-in switch function, which allows control of up to sixteen DVI -enabled computers with a single
keyboard, touchpad and DVI monitor. When access to a server rack is needed, the drawer can be pulled out and the display lifted
up like a notebook computer, revealing the keyboard and touchpad. When the drawer is not in use, the display can be folded
forward and down so the 1RU drawer can be pushed into the cabinet easily and smoothly, helping to organize and streamline
busy server rooms.
The onboard USB KVM switch allows access to any DVI-enabled Windows, MAC, or SUN USB CPUs from one DVI monitor, USB
keyboard and USB mouse (up to 16 CPUs). Internal microprocessor circuitry allows all USB CPUs to be booted simultaneously
without keyboard error. Port selection is accomplished through switches on the keyboard tray or keyboard commands.
Models Available
RACKMUX-D17-N-4DVIHD - KVM Drawer with 17" TFT/LCD DVI monitor and 4-port UNIMUX
RACKMUX-D17HR-N-4DVIHD - KVM Drawer with 17.1" Hi-Resolution WUXGA monitor and 4-port UNIMUX
RACKMUX-D17-N-8DVIHD - KVM Drawer with 17" TFT/LCD DVI monitor and 8-port UNIMUX
RACKMUX-D17HR-N-8DVIHD - KVM Drawer with 17.1" Hi-Resolution WUXGA monitor and 8-port UNIMUX
RACKMUX-D17-N-16DVIHD - KVM Drawer with 17" TFT/LCD DVI monitor and 16-port UNIMUX
RACKMUX-D17HR-N-16DVIHD - KVM Drawer with 17.1" Hi-Resolution WUXGA monitor and 16-port UNIMUX
Types of CPUs Supported
Any DVI-enabled USB CPU supporting USB version 1.0 or above including:
USB WINxx
USB MAC
USB SUN
Features
Entire unit is only 1RU (1.75") high
High-quality metal construction (ideal for most industrial and commercial settings)
17" Rack Mount LCD Monitor features a wide viewing angle
1280x1024 resolution for 17" monitor
1900x1200 resolution for 17.1” hi-resolution monitor
A forward-folding 17”TFT LCD DVI monitor
Includes rack mount kit suitable for SUN and most EIA 19" racks
Fits varying rack depths from 24” to 40” deep via adjustable mounting brackets
DVI Video Compatible
Powered by 110 or 220VAC, 50 or 60Hz with country-specific line cord
Auto shut-OFF switch: Turns OFF the power to the monitor when the LCD is in a folded-closed position
Standard 3-button touchpad
Added security with a drawer lock to prevent unwanted access
Locking rails to prevent movement of the drawer when fully extended
Multi-language support including: US(English), UK(English), German, French, Italian, and Spanish
Option
Rackmounting kit for two-post Telco rack - order RL-T15-TEL

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
2
MATERIALS
Materials supplied with this kit:
NTI RACKMUX-D17(HR)-N-yDVIHD KVM Drawer with USB KVM Switch (where y= 4,8 or 16)
Line cord, country specific
Set of keys for keylock
Single-Person-Installation Mounting Hardware
URL slip with link to pdf of this manual
1- DB9 Female-to-RJ45 Female adapter
1- 5 foot RJ45-to-RJ45 CAT5 patch cable
Materials Not supplied but REQUIRED:
USB-DHEXT-xx-MM cable for each CPU being connected to the switch- for DVI monitor, USB keyboard, and USB mouse
support- available in 3, 6,10, and 15 foot lengths
where:
xx is the length of the cable in feet
MM indicates male-to-male connector
Cables can be purchased from Network Technologies Inc by calling [phone] (800-RGB-TECH) in the US and Canada or
[phone] (worldwide).
HDMI Type A Male
USBType A Male
DVI-D-Male
Single Link
DVI-D-Male
USB Type A
Male
HDMI Type A
Male
USB-DHEXT-xx-MM
(3,6,10 and 15 foot cables available)

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
3
FEATURES AND FUNCTIONS
1. Power Button- press to turn the LCD monitor ON and OFF
2. Power LED- Indicates operation status
Green = Power-ON, Video Input Signal OK
Red = Suspend / Stand-by, or no Video Input Signal
3. Menu Button- press to turn ON the OSD menu
4. Up Arrow Button- press to move the cursor in the OSD menu up
5. Down Arrow Button- press to move the cursor in the OSD menu down
6. Select Button- press to select a menu item
7. NumLock LED- illuminates when the Num Lock is ON
8. CapsLock LED- illuminates when Caps Lock is ON
9. Scroll Lock LED- illuminates when the Scroll Lock keyboard feature is ON
10. Keylock- to prevent unauthorized use of the RACKMUX
11. 3-button Touch Pad- for controlling mouse movements on the monitor and controlling the computer
12. Keyboard- for manual data entry and computer control
13. CPU Select Switch- push to manually switch to a specific CPU or change the switch operating mode
14. CPU Status LED- for visual indication of connection between the user and a specific CPU
15. Mode Status LEDs- for visual indication of switch operating mode
16. Auto Shut-OFF- switch automatically shuts OFF the LCD display when the monitor is folded down
17. LCD Display- for viewing the video signal from the connected CPU
18. IEC Connector w/Built-in 2A 240VAC Replaceable Fuse- for attachment of the AC power cord to power the RACKMUX
drawer
19. Power Switch- to power the RACKMUX ON/OFF
20. RS232- RJ45 connector- for attachment of an RS232 control cable
21. CPU x- HDMI Type A female connectors- for connecting USB-DHEXT-xx-MM cables from CPUs
22. RS232 Dip Switches- for controlling the baud rate of the RACKMUX for RS232 communication
23. DDC- recessed button used to reset DDC information between the RACKMUX and the connected CPU
Front View
RACKMUX-D17-N-8DVIHD
Rear View
RACKMUX-D17-N-8DVIHD
14
12
11
1A
9
8
7
10
1
2
3
4
5
6
15 VIDEO 1VIDEO 2VIDEO3VIDEO4VIDEO5VIDEO6VIDEO7VIDEO8
22
13
17
18
16
Scan CommandBroadcast
87654321
DDC
18
ON
23
19 20 21

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
4
RACKMUX SINGLE-PERSON INSTALLATION
Your NTI RACKMUX Drawer was designed for easy installation by one person with a minimum of tools and effort. Follow the
simple steps below to quickly install your RACKMUX Drawer.
If you would like to see a video of this installation, see the “single-person-installation”video .
1. Locate and unpack the hardware bag. Your hardware bag will include all items necessary to install the specific RACKMUX
model (see the manual that accompanied your RACKMUX drawer), including the following hardware unique to the Single-Person
hardware installation:
10- #10-32 cage nut
2- #10-32 x 1/2” flat-head machine screw
8- #10-32 x 3/4” pan-head machine screw
To install the rails you will need only a tape measure and Phillips screwdriver.
2. Unpack the left and right rail assemblies. Each are labeled “Right Front” and “Left Front” to indicate their intended position and
orientation. Extend each rail assembly to the dimension required for your rack. Rail assemblies are adjustable to fit within a rack
between 24” and 40” in depth.
Figure 1- Adjustable rail assemblies
Rail assemblies are adjustable in length from 24” to 40”.
XXXXX
Labeled

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
5
3. Install six #10-32 cage nuts at the front of the rack in positions where the RACKMUX will be mounted (three in each side).
Install four more cage nuts at the rear of the rack in positions straight across from the upper and lower cage nuts installed in front.
Figure 2- Install the cage nuts
4. Install the right rail assembly. The end with the label “Right Front” mounts to the front rack support. Install only the center
screw through the rail flange to the rack support and cage nut using the #10-32 x 1/2” flat head machine screw provided. (See
image below.) Do not tighten at this time. Install the left rail assembly in the same fashion. The end with the label “Left Front”
mounts to the front rack support.
5. Install two #10-32 x 3/4” pan-head screws in the rear of each rail assembly as shown below. Do not tighten at the time.
Figure 3- Install the rail assemblies
Install one flat
head screw in
the center in
each side at
the front
Install two
screws in each
side at the rear
Rack Front
R
ack Rear
Cage
Nuts
Front Rack
Support
Extender Rail
Rail Flange
Cage
Nuts
Rear Rack
Support
Extender Rail

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
6
6. Measure the distance between the inside of the rails at the front of the rack. Adjust the distance to 17-1/4” and tighten the flat-
head screws to the rail flanges securely.
Figure 4- Check spacing of the rails
7. Lineup the rail guides on the RACKMUX drawer with the slots in the front of the left and right rails and slide the drawer into the
rack. The rail guides should be positioned such that the wide lip of the guide is on the backside of the rail. Slide the drawer in
completely.
View of rail guide from the front of the rack support View of rail guide from the backside of the rail
Figure 5- Rail guides
17-1/4"
Front Rack Supports
Left Rail
Right Rail
Rail guides Wide lip of rail g
u
ide

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
7
8. Apply four more #10-32 x 3/4" pan-head machine screws (two for each) through the holes in the drawer flanges, through the
holes in the left and right rails, into the cage nuts in the rack supports. Tighten each securely.
Figure 6- Apply remaining screws to complete installation
9. Tighten securely the four screws applied to the rear rail flanges in step 4.
10. Make your cable connections according to your RACKMUX Drawer instructions.
Your NTI RACKMUX Drawer is now installed and ready for use.
Optional Telco 2-Post Mounting
If the Telco 2-post mounting bracket kit (NTI# RL-T15-TEL)is to be used, secure the short and long brackets to each side of the
drawer as shown in Fig. 2. Remove the flange nuts from the studs on the drawer, attach the brackets and apply 2 nuts
(supplied) per bracket to secure the brackets to the drawer. Apply two #10-32x3/4” screws (supplied) per bracket to the post at
the desired height. Slots are provided in the brackets to make minor depth adjustments easy. Be sure to properly tighten all
nuts and screws before using the drawer.
Figure 7- Mount to Telco post with optional mounting brackets
Apply two
more screws
on each side
There should
be a total of
six screws at
the front now.

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
8
Connect The Cables
FYI: It is not necessary to turn the CPUs or monitors OFF during this installation.
1. Connect each CPU to the UNIMUX switch using a USB-DHEXT-xx-MM (Required-not supplied) as shown in Fig. 3.
Figure 8- Connect each CPU
2. Connect the power cord to the IEC power connector.
Figure 9- Connect the power cord
Rear View of UNIMUX in RACKMUX-D17-N-16DVHD
USB Type A Female
USB Type A Male
DVI Female
Video Connector
Rear View of Windows USB CPU
Video Port
Input Device Port HDMI Type A
Video Connector
Mating Face of
DVI Male Mating Face of HDMI Type A Male
CPU 1CPU 2CPU 3CPU 4CPU 5CPU 6CPU 7CPU 8
CPU 9CPU 10CPU 11CPU 12CPU 13CPU 14CPU 15CPU 16
RS232
250V,2A
DDC
RS232
18
ON
USB-DHEXT-xx-MM
(sold separately)
Rear View of UNIMUX in RACKMUX-D17-N-16DVIHD
CPU 1CPU 2CPU 3CPU 4CPU 5CPU 6CPU 7CPU 8
CPU 9CPU 10CPU 11CPU 12CPU 13CPU 14CPU 15CPU 16
RS232
250V,2A
DDC
RS232
18
ON
Power cord
with IEC connector

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
9
RS232 Connection
If RS232 control will be used, connect one end of the CAT5 patch cable (supplied) to the port labeled “RS232” on the rear of the
RACKMUX. Plug the other end of the CAT5 cable into the RJ45-to-DB9 adapter supplied, and connect the adapter to the RS232
port on the control terminal. Follow the instruction under “RS232 Control” on page 13 for configuration and use of the RS232
control feature.
Figure 10- Connect RS232 control terminal
Power-Up Sequence
1. Using the key, unlock the drawer and slide the keyboard and LCD Display out far enough to raise the display to a comfortable
viewing angle.
2. Power ON the RACKMUX with the power switch located on the rear of the drawer.
3. Power ON the monitor with the power switch located on the monitor.
4. Adjust the screen's brightness and contrast with the controls also located on the monitor– as needed.
5. Power ON any attached CPUs.
FYI: The CPUs can be powered at any time although if a CPU needs a keyboard and/or mouse at power-ON it should be
powered after connecting to and powering-ON the RACKMUX.

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
10
USING THE UNIMUX
Once the RACKMUX is properly connected, the UNIMUX switch will enable a connection to be made between the attached CPUs
and the monitor, keyboard, and mouse.
The UNIMUX can be controlled by three methods:
front panel control using touch-switches and LEDs on the keyboard tray
keyboard control through Command Mode
RS232 control (see page 13)
Front Panel Control
There is a panel of numbered touch-switches and LEDs on the keyboard tray of the RACKMUX. There is one switch and
LED for each CPU the switch will connect the monitor and input devices to. Pressing any touch-switch will connect the
corresponding CPU to the monitor and input devices.
Holding down any touch-switch for more than 2 seconds will cause the UNIMUX to cycle through all modes of operation
including COMMAND, BROADCAST, SCAN, and NORMAL (described in "Command Mode" below). The three MODE LEDs on
the panel indicate which mode is selected. Release the touch-switch when the LEDs indicate the desired mode. When no mode
LEDs are illuminated the user is in Normal Mode controlling directly the CPU to which the user is connected through the UNIMUX.
Figure 11- CPU Select switches, status LEDs and Mode LEDs
Keyboard Control
Keyboard control of the UNIMUX switch is achieved using Command Mode - operated using the keyboard . By pressing
<Ctrl> + < ` > (accent/tilde key), the user can enter Command Mode. Once in Command Mode, typing a series of commands
will cause the UNIMUX switch to connect the user to any one CPU connected to the switch. Pressing the <Esc> key will exit
Command Mode. The following instruction describes how to use the menus to operate the UNIMUX switch.
Command Mode
In order to control the UNIMUX with the keyboard connected, Command Mode must be enabled. To enter Command Mode from
the keyboard:
When the COMMAND LED is illuminated, all 3 LEDs on the keyboard will illuminate (caps lock, scroll lock, and num lock) to
indicate that Command Mode is enabled and the following functions are available:
Basic Command Functions
Function: Keystroke:
Increment Port
Decrement Port
CHORDED SEQUENCE- PRESS CONSECUTIVELY
AND KEEP KEYS PRESSED UNTIL ALL ARE PRESSED.
+
-PRESS CONSECUTIVELY
or PRESS EITHER KEY
KEY SYMBOLS LEGEND:
`
+
Ctrl ~(ACCENT/TILDE
KEY)
Press (simultaneously)
Scan CommandBroadcast
87654321
(select the next
higher port
ex. 01 02)
Ioror
D(select the next
lower port
ex. 02 01)
oror

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
11
Toggle Scan Mode
ON and OFF
Toggle Broadcast Mode
ON and OFF
Sets scan time-out
period for each port.
Selects a specific
port
Configure port to connect
To a MAC CPU
Configure port to connect
To a WINDOWS or SUN
CPU
Exit Command Mode
Scan Mode
To activate or deactivate Scan Mode press <S> from the Command Mode menu. When in Scan Mode the switch scans to each
port with a CPU powered-ON. (The SCAN LED on the front panel will illuminate and remain ON while in Scan Mode. ) The port
with the CPU powered-ON remains active while in use until it becomes idle for the configured dwell time (default time-out period is
5 seconds) before switching to the next powered-ON CPU port. See Command Mode section above for configuring the scan dwell
time.
Note: The keyboard and mouse must remain idle for the full scan dwell time before the switch selects the next active
port.
To begin scanning, press <Esc> to exit Command Mode.
Broadcast Mode
To activate or deactivate Broadcast Mode,press <B> from the Command Mode menu. Broadcast Mode enables the user to type
characters to all powered-ON CPUs simultaneously.
Note: The user must type somewhat slowly (less than 20 wpm) when in Broadcast Mode and cannot use the
<Backspace> key.
To begin broadcasting, press <Esc> to exit Command Mode.
Normal Mode
When the Broadcast, Scan, and Command LEDs are all OFF the user is in Normal Mode, controlling the CPU to which the user is
connected through the UNIMUX.
P--(Pxx would be P01, P02, etc.)
(0-9)
x (0-9)
x
Esc FYI: The user must exit Command Mode to type to a CPU.
To exit Command Mode, either hold down any touch-switch on the
front panel for more than 2 seconds, OR press <ESC> on the
ke
y
board.
S(The SCAN Mode LED will
also toggle ON and OFF)
T--(xxx from 002 to 255. ie. T002
would set the time-out period
for 2 seconds)
-
(0-2)
x (0-9) x (0-9) x
B(The Broadcast Mode LED
will toggle ON and OFF.)
+
Mx (xx= 01-8 <M> + <0> + <1> will enable function on Port 1
<M> + <0> + <4> will enable function on Port 4. Keyboard
LED's will flash once to confirm command. )
+x
+
Wx (xx= 01-8 <W> + <0> + <1> will disable function on Port 1
<W> + <0> + <4> will disable function on Port 4. Keyboard
LED's will flash once to confirm command. )
x
+

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
12
No Sun Sleep Mode
Note: It is necessary to configure a Sun CPU (most versions) such that the Sleep Mode is not enabled. If the Sun CPU
goes into Sleep Mode either automatically or manually, the user must reboot the Sun CPU in order to resume use of the
Sun CPU.
To disable the Sleep Mode, perform the following steps:
1. Select "Power Manager"
2. Look for "Device Idle Time Before Power Saving Starts"
3. Select "Always ON"
4. Look for "Override Device Idle Time For:"
5. Make sure neither "Monitors" nor "Disks" are selected.
Select Country Code
It is possible to configure the UNIMUX to emulate a specific international Sun keyboard regardless of what actual keyboard is
connected. This is recommended when the CPU needs the layout code (i.e. a SUN CPU) and the keyboard doesn't have an
explicit layout code (i.e. some Windows keyboards). To do this, manually set the UNIMUX to indicate the international keyboard
identification number to the CPU using the following procedure;
1. Enter Command Mode
2. Type Lxx, where xx is the number from the list below that corresponds to the desired country code
3. Exit Command Mode
Note: If any SUN CPUs are connected to the UNIMUX, they must be rebooted. Keyboard configuration is only read by
SUN CPUs on startup.
Country Codes
00 Auto Detect 13 International (ISO) 26 Swedish
01 Arabic 14 Italian 27 Swiss/French
02 Belgian 15 Japan (Katakana) 28 Swiss/German
03 Canadian-
Bilingual 16 Korean 29 Switzerland
04 Canadian-French 17 Latin American 30 Taiwan
05 Czech Republic 18 Netherlands/Dutch 31 Turkish
06 Danish 19 Norwegian 32 UK
07 Finnish 20 Persian (Farsi) 33 US
08 French 21 Poland 34 Yugoslavia
09 German 22 Portuguese
10 Greek 23 Russia
11 Hebrew 24 Slovakia
12 Hungary 25 Spanish
Figure 12- Country Codes for international SUN keyboards

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
13
RS232 CONTROL
RS232 enables the UNIMUX to be remotely controlled via RS232. To control the UNIMUX via RS232 the user has three options:
write a program that runs on a PC using the Command Protocol (page 15)
use the NTI Switch Control Program (page 17)
use the SerTest program (page 17)
RS232 Connections and Configuration
Remote Connection
The RS232 Interface is designed to meet the RS232C standard and can be controlled from any CPU or other controller with an
RS232 communications port. The pin-out for the RJ45 connector on the unit is as follows:
RS232 (RJ45) CONNECTOR
PIN SIGNAL FUNCTION
1 - No connection
2 - No connection
3 RX+ Receive data (TXD at host)
4 GND Ground
5 - No connection
6 TX+ Transmit data (RXD at host)
7 - No connection
8 - No connection
A 5 foot patch cable and RJ45-to-DB9 adapter have been provided for connection to most CPUs (see page 9).
Baud Rate
The baud rate can be changed by powering down the unit, changing the 8 position RS232 DIP switch on the rear of the UNIMUX,
and then powering back up. This table shows how to set the baud rate. (Fig. 8 shows switches in their factory-default position.)
DIP
SWITCH BAUD RATE
3 2
OFF OFF 2400
OFF ON 9600 (default)
ON OFF 19200
ON ON 38400
Figure 13- RS232 DIP switches
RS232
18
ON

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
14
Unit Address and Loop Back
To allow multiple units to be controlled from a single CPU serial port, the RS232 control interface is designed to allow "daisy
chaining" up to 7 units. By setting the appropriate RS232 DIP switches, each unit can be given a unique address (1-7). Then the
unit will only respond to commands on the bus if its address is embedded in the command. Use the following table to set the unit
address.
DIP SWITCH UNIT ADDRESS
8 7 6 5
OFF OFF OFF OFF 0 (not valid)
OFF OFF OFF ON 1 (default)
OFF OFF ON OFF 2
OFF OFF ON ON 3
OFF ON OFF OFF 4
OFF ON OFF ON 5
OFF ON ON OFF 6
OFF ON ON ON 7
Note: Pin 4 on the RS232 dip switch is not used.
In order to connect multiple switches (up to 7) with RS232 connections to the same CPU, an NTI Matrix-Y-1 cable must be used.
Connect the Matrix-Y-1 cable (sold separately) between the RJ45-to-DB9 serial adapter (supplied) and the CPU as shown in
Fig. 9.
Figure 14- RS232 connection with Matrix-Y-1 cable
Note: The "loop back" RS232 DIP switch (RS232 DIP
switch 1) should be ON for each unit in the chain.
NTI
SWITCH
CPU
RS232
First Unit
NTI
SWITCH
RS232
NTI
SWITCH
RS232
Second Unit Last Unit
RS232
Serial Port Matrix-Y-1 Matrix-Y-1 Matrix-Y-1
RJ45
TO DB9
SERIAL
ADAPTER
RJ45
TO DB9
SERIAL
ADAPTER
RJ45
TO DB9
SERIAL
ADAPTER
CAT5 CABLE CAT5 CABLE CAT5 CABLE
Note: The maximum combined
RS232 cable length between the
CPU and any NTI switch cannot
e
x
ceed
50
f
eet
.

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
15
Figure 15- Pinout of Matrix-Y-1 cable
Command Protocol
RS232 commands supported by the unit are defined below. All command strings should be terminated with a <CR> (carriage
return). When a command is sent, the entire string is echoed back along with a response from the addressed unit as shown in the
command definitions. All characters in the command string should be upper case, and all numbers below 10 should have a
leading 0 (ex: 1 = 01). As command strings are sent, the inner character delay cannot exceed 500 milliseconds.
Figure 16- RS232 Communication Illustrated
Note: To use this command protocol, the user is required to write a program that will send an entire command string all
at once, not character by character. Programs that send one character at a time (such as HyperTerminal) cannot be used
to control the UNIMUX. Alternatively, the user may use the NTI Switch Control Program or SerTest to control the
UNIMUX via RS232 (see page 17).
(Unit #1) (Source)
23
33
555
22
7
8
1
4
6
Jumper
Jumpers
Not connected to
source connector
(Unit #2)
9D Female9D Male 9D Male
Wiring Schematic of Matrix-Y-1 cable
CS 01,01,03<CR> CS 01,01,03<CR>
(COMMAND RECEIVED)
(RESPOND)
* <CR>
(COMMAND SENT)
(RESPONSE RECEIVED)
CS 01,01,03<CR>
* <CR>
CPU SWITCH AT UNIT ADDRESS 01
RS232
RS232
(ECHO)
CS 01,01,03<CR>

NTI RACKMUX KVM Drawer with UNIMUX DVI Video Switch
16
Legend: (All numbers must be two digits)
SW : Switch (01-7) (Unit Address)
OP : Output (User) Port (01)
BR : Baud Rate (12 =1200, 24=2400, 48=4800, 96=9600 baud)
IP : Input (CPU) Port (01-MAXINPUTS)
<CR> : Carriage Return (Hex 0xD)
Note: For units with one output (user) port, use 01 for the output selection.
Command Definitions
Command String Good Response Description
CS SW,IP,OP *<CR> Connect Output (User) Port To specific Input (CPU) Port
RO SW,OP *<CR>IP<CR> Read Connection For Output (User) Port to Input (CPU) Port
CB 00,BR None Change Baud Rate For All Switches (BR=12 (1200), 24 (2400),
48 (4800), 96 (9600) baud)- see “Note”below
RS SW *<CR> Internal Reset
RU SW *<CR>IP,OP<CR> Read Unit Size
SS SW,00 *<CR> Disable Autostatus feature (see below)
SS SW,01 *<CR> Enable Autostatus feature (see below)
GO SW,OP *<CR>go SW,OP:IP<CR> Read connection of a Output (User) Port to Input (CPU) Port
(different response format than RO command)
GM SW,00 *<CR>go OP,IP (all ports)<CR> Read connection matrix of all Output (User) ports
If the first field is not a known command (as listed above) or SW field is different from the unit address programmed at the dip
switch (page 14), the command will be ignored. If the SW field corresponds to the unit address, but if the syntax is wrong after
this field, the switch will answer with a bad response ?<CR>.
Syntax example:
CS 01,05,01<CR> (insert the space and commas as shown)
which means “At the switch with unit address 01, connect CPU port 05 to user port 01”
The switch will answer with:
<CR>
The HEX code representation of example above is:
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
‘C’
(0x43) ‘S’ (0x53) Space (0x20) Switch –1st digit (0x30) Switch –2nd digit
(0x31) ‘,’
(0x2C) Output –1st digit (0x30) Output –2nd digit
(0x35) ‘,’
(0x2C)
Byte 10 Byte 11 Byte 12
Input –1st digit
(0x30) Input –2nd digit
(0x31) <CR>
(0x0D)
Response:
Byte 1 Byte 2
‘’
(0x2A) <CR>
(0x0D)
Autostatus
When Autostatus is enabled, any output (user) -to-input (CPU) connection change in the UNIMUX will cause an Autostatus
message to be sent via RS232 to the administrator. The format of the message would be "pc SW,OP:IP<CR>"
Example of an Autostatus message:
pc 01,01:04<CR>
which means "At the switch with unit address 01, the output (User) (01) has changed connection to input (CPU) port 04."
Note: An Autostatus message to the administrator will be delayed by any RS232 traffic being received by the switch
from the administrator.
By default, Autostatus is disabled and must be manually enabled.
Note: a change in the baud rate using
RS232 will only be effective until the
UNIMUX is power- cycled. The DIP
switch positions (page 10) will
determine the set baud rate each
time the UNIMUX is
p
owered ON.