NTI Xtendex ST-C5KVM-300 User manual

MAN074 Rev Date 4/20/2005
EXTENDERS
Installation and Operation Manual
XTENDEXTM Series
NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.nti1.com
NTI R
ST-C5VA-300
Video and Audio
Extender
ST-C5V-300
Video Extender
ST-C5KVMA-300
PS/2 KVM and Audio
Extender
ST-C5KVM-300
PS/2 KVM Extender

MAN074 Rev Date 4/20/2005
Warranty Information
The warranty period on this product (parts and labor) is one (1) year from the date of purchase. Please contact Network
Technologies Inc at [phone] (800-RGB-TECH) or [phone] or visit our website at http://www.nti1.com for
information regarding repairs and/or returns. A return authorization number is required for all repairs/returns.
COPYRIGHT
Copyright © 2005 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.
Trademark---- EXTENDEX is a trademark of Network Technologies Inc in the U.S. and other countries.

MAN074 Rev Date 4/20/2005
TABLE OF CONTENTS
Introduction......................................................................................................................................................................1
Materials..........................................................................................................................................................................1
Features and Functions...................................................................................................................................................2
Limitations .......................................................................................................................................................................3
Preparation for Installation ..............................................................................................................................................4
Installation .......................................................................................................................................................................5
Installing The Remote Unit ..........................................................................................................................................5
Connect the CAT5 cable..............................................................................................................................................6
Installing The Local Unit ..............................................................................................................................................7
Connect The CAT5 Cable............................................................................................................................................9
Plug-in and Boot Up.....................................................................................................................................................9
Video Quality Adjustment..............................................................................................................................................10
Technical Specifications................................................................................................................................................11
Interconnection Cable Wiring Method...........................................................................................................................12
Troubleshooting.............................................................................................................................................................12
TABLE OF FIGURES
Figure 1- Connect the Extended Components to the Remote Unit....................................................................................................5
Figure 2- Connect speakers to the Remote Unit................................................................................................................................6
Figure 3- Connect the CAT5 cable to the Remote Unit......................................................................................................................6
Figure 4- Connect the local user to the XTENDEX Local Unit...........................................................................................................7
Figure 5- Connect speakers to Local Unit with audio support............................................................................................................7
Figure 6- Connect the Local Unit with VGA video and audio support to the CPU..............................................................................8
Figure 7- Connect CAT5 cable to Local Unit......................................................................................................................................9
Figure 8- Connect the AC adapter to the Local Unit ..........................................................................................................................9
Figure 9- Connect the AC adapter to the Remote Unit ....................................................................................................................10
Figure 10- Turn "EQ" screw for video quality adjustment.................................................................................................................10
Figure 11- View looking into RJ45 female........................................................................................................................................12

NTI EXTENDEX Extenders
1
INTRODUCTION
The XTENDEX Series CAT5 Extender (XTENDEX) is designed to enable one CPU to be controlled by two users, one local and
one remote. The remote user can be located as much as 300 feet away from a PS/2 CPU via Category 5 unshielded twisted-
pair cable. The local user will be located near the CPU.
The XTENDEX Series Extender is extremely simple to install and has been thoroughly tested to insure reliable performance.
Through the use of Category 5 cable it is possible to economically increase the flexibility of a computer system. Here are some of
the features and ways this can benefit any workplace:
•Allows the placement of computer peripherals (monitor, keyboard, and mouse) in a location where
only these parts are needed without having the CPU there too, taking up valuable space
•Allows a PS/2 CPU to be accessed by both a local and remote user (up to 300 feet away)
•Compatible with VGA and XGA systems
•Provides crisp and clear resolution up to 1280 x 1024 @ 300 feet (see page 11 for more details)
•Compatible with all NTI switches and splitters, enabling the joining of products to create a system that
satisfies all networking needs
•Video quality, for varying lengths of cable, is manually adjustable ( see page 10) providing optimum image
quality
•Audio frequency response is 20Hz to 20Khz, + 1dB (models with audio support only)
•Digital transmission of audio signals reduces any loss in quality (models with audio support only)
This manual covers each of the XTENDEX Series CAT5-300 Extender models offered. Some features described in this manual
are available in some models and not in others. The chart below shows the features supported in each:
Model Video Keyboard Mouse
Support Audio Support
ST-C5KVM-300 VGA Yes No
ST-C5KVMA-300 VGA Yes Yes
ST-C5V-300 VGA No No
ST-C5VA-300 VGA No Yes
MATERIALS
Materials Included with this kit:
9NTI XTENDEX Local Unit
9NTI XTENDEX Remote Unit
9120VAC or 240VAC at 50 or 60Hz-9VDC/1.0A AC Adapters (KVM/KVMA models include 2, V/VA models include 1)
9This owner's manual
Additional materials may need to be ordered, depending upon the configuration:
¾CAT5/5e/6 unshielded twisted-pair cable(s) terminated with RJ45 connectors wired straight thru- pin 1 to pin 1, etc. (see pg.
12 for proper EIA/TIA 568 B wiring method)
¾Cable(s) needed if Local Unit will be located further than 15" from the CPU
Model Cable(s) needed
ST-C5KVM-300 VKMEXT-xx
ST-C5KVMA-300 VKMEXT-xx and SA-xx-MF
ST-C5V-300 VEXT-xx
ST-C5VA-300 VEXT-xx and SA-xx-MF
Contact your nearest NTI distributor or NTI directly for all of your KVM needs at 800-RGB-TECH (800-742-8324) in US & Canada
or 330-562-7070 (Worldwide) or at our website at http://www.nti1.com and we will be happy to be of assistance.

NTI EXTENDEX Extenders
2
FEATURES AND FUNCTIONS
1. Green LED- power indicator- illuminates when.power has been supplied to the unit
2. Yellow LED- traffic indicator- illuminates when there is communication between the local and remote units
3. Cat 5- RJ45 female- for connecting the CAT 5 cable
4. Video Connector- 15HD female- for connecting the local user's VGA monitor
5. Audio Jack- 3.5mm stereo audio jack- for connecting to local speakers (models with audio support only)
6. Keyboard Connector- purple female 6 miniDIN- for connecting the local user's keyboard
7. Mouse Connector- green female 6 miniDIN- for connecting the local user's mouse
8. Video Connector- blue 15HD male- for connecting to the video port on the CPU or KVM switch
9. Mouse Connector- green male 6 miniDIN- for connecting to the mouse port on the CPU or KVM switch
10. Keyboard Connector- purple male 6 miniDIN- for connecting to the keyboard port on the CPU or KVM switch
11. Audio Plug- 3.5mm stereo audio plug- for connecting to CPU audio line out (models with audio support only)
12. Keyboard Connector- purple female 6 miniDIN- for connecting the remote user's keyboard
13. Mouse Connector- green female 6 miniDIN- for connecting the remote user's mouse
14. Audio Jack- 3.5mm stereo audio jack- for connecting to remote speakers (models with audio support only)
15. 9VDC- 1.0A- connection jack for the AC adapter
S T - C 5 K V M A - 3 0 0 L o c a l U n i t
( F r o n t V i e w ) ( R e a r V i e w )
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
891 0 1 1
1
3
4
5
6
7
-
+
1 5
-
+
1 5
S T - C 5 V A - 3 0 0 L o c a l U n i t
( F r o n t V i e w ) ( R e a r V i e w )
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
81 1
1
3
4
5

NTI EXTENDEX Extenders
3
16. Video Connector- 15HD female- for connecting the remote user's monitor
17. "EQ" screw- for manually adjusting video quality
LIMITATIONS
•Hot-plugging of devices is supported provided devices were originally connected at power-up.
•In order for two users to share a PS/2 CPU, the user in control must pause for at least 3 seconds before another user can
take control. After the 3 second pause, either user can take control of the CPU.
For models with audio support:
•The audio input of the XTENDEX with audio support is compatible with the following standard CPU audio outputs:
•Line out - typically lime green in color
•Speaker out- typically orange in color
•Headphone out- typically located on the CD-ROM
•The audio output of the XTENDEX with audio support is compatible with self-powered stereo speakers.
1
1 3 1 4
S T - C 5 K V M A - 3 0 0 R e m o t e U n i t
-
+
( F r o n t V i e w ) ( R e a r V i e w )
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
1 6
1 5 3
1 7
-
+
1 4
S T - C 5 V A - 3 0 0 R e m o t e U n i t
( F r o n t V i e w ) ( R e a r V i e w )
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
1 6
3
1 7
-
+

NTI EXTENDEX Extenders
4
PREPARATION FOR INSTALLATION
•Locations should be chosen for the monitors, mice, and keyboards that also have space to connect the Remote and Local
Units within the distance provided by the cables. If extension cables are needed, contact NTI for the cables required.
•The CAT5 cables must be run to the locations where the Remote and Local Units will be connected. Be careful to route the
cables away from any sources of magnetic fields or electrical interference that might reduce the quality of the video signal
(i.e. AC motors, welding equipment, fluorescent lighting, etc.).
•All cables should be installed in such a way that they do not cause stress on their connections to the equipment. Extended
lengths of cable hanging from a connection may interfere with the quality of that connection. Secure cables as needed to
minimize this.
•Properly shut down and disconnect the power from the CPU and monitors to be separated. If other equipment is involved
whose connections are being interrupted, be sure to refer to the instruction manuals for that equipment for proper
disconnection and re-connection procedures before proceeding.

NTI EXTENDEX Extenders
5
INSTALLATION
Installing The Remote Unit
1. Position the Remote Unit such that the CAT5 cable, the monitor cable, device cables, and the AC
adapter power connector can each reach the Remote Unit without putting strain on the cables.
2. Connect the monitor cable to the female 15HD video connector on the Remote Unit.
3. Connect the device(s) to the Remote Unit (see Fig. 1)(KVM models only).
a. Connect the keyboard to the purple female 6 pin miniDIN connector on the Remote Unit.
b. Connect the mouse to the green female 6 pin miniDIN connector on the Remote Unit.
4. If the Remote Unit has audio support, connect the cable from the remote speakers to the 3.5mm
stereo audio jack on the Remote Unit. (See Fig. 2)
Figure 1- Connect the Extended Components to the Remote Unit
V G A
M u l t i - S c a n
M o n i t o r
P S / K E Y B O A R D
P S / M O U S E
1 5 H D F e m a l e
V i d e o C o n n e c t o r
F r o n t V i e w o f
R e m o t e U n i t
S T - C 5 K V M A - 3 0 0 R e m o t e U n i t ( F r o n t a n d R e a r V i e w )
C A T 5 C a b l e t o
L o c a l U n i t
R e a r V i e w o f R e m o t e U n i t
R e m o t e U s e r ' s K e y b o a r d , M o n i t o r , a n d M o u s e
6 p i n m i n i D I N
F e m a l e C o n n e c t o r
G r e e n P o w e r L E D
Y e l l o w T r a f f i c L E D
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
-
+

NTI EXTENDEX Extenders
6
R e a r V i e w o f R e m o t e U n i t
G r e e n
P o w e r L E D
Y e l l o w
T r a f f i c L E D C A T 5 C a b l e t o
L o c a l U n i t
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
Figure 2- Connect speakers to the Remote Unit
Connect the CAT5 cable
Make sure the CAT5 cable has been installed in accordance with the “Preparation for Installation”
instructions on page 3. Connect the CAT5 cable to the “Cat 5” port on the Remote Unit. (See Fig. 3.)
When properly inserted the CAT5 cable end should snap into place.
Note: If an RJ45 wall outlet is being used, connect the other end of the extension cable to the RJ45 wall outlet.
WARNING: Never connect the XTENDEX to an
ethernet card, ethernet router, hub or switch or other
ethernet RJ45 connector of an ethernet device. Damage
to devices connected to the ethernet may result.
Figure 3- Connect the CAT5 cable to the Remote Unit
!
S T - C 5 K V M A - 3 0 0 R e m o t e U n i t
3 . 5 m m S t e r e o
A u d i o J a c k
S t e r e o
S p e a k e r s
( R e a r V i e w )
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
-
+

NTI EXTENDEX Extenders
7
Installing The Local Unit
1. Make connections for a local user (see Fig. 4)
a) Connect the cable from the local user's VGA monitor to the female 15HD port on the Local Unit.
b) Connect the local user's mouse to the green 6 pin miniDIN female port on the Local Unit.
c) Connect the local user's keyboard to the purple 6 pin miniDIN female port on the Local Unit.
Figure 4- Connect the local user to the XTENDEX Local Unit
d) If the Local Unit has audio support, connect the
cable from the local speakers to the 3.5mm
stereo audio jack on the Local Unit.
(See Fig. 5)
Figure 5- Connect speakers to Local Unit with audio support
V G A
M u l t i - S c a n
M o n i t o r
P S / K E Y B O A R D
P S / M O U S E
1 5 H D F e m a l e
V i d e o C o n n e c t o r
F r o n t V i e w o f
L o c a l U n i t
S T - C 5 K V M A - 3 0 0 L o c a l U n i t ( F r o n t a n d R e a r V i e w )
C A T 5 C a b l e t o
R e m o t e U n i t
R e a r V i e w o f L o c a l U n i t
L o c a l U s e r ' s K e y b o a r d , M o n i t o r , a n d M o u s e
6 p i n m i n i D I N
F e m a l e C o n n e c t o r
G r e e n P o w e r L E D
Y e l l o w T r a f f i c L E D
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
R e a r V i e w
S T - C 5 K V M A - 3 0 0 L o c a l U n i t
3 . 5 m m S t e r e o
A u d i o J a c k
S t e r e o
S p e a k e r s
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X

NTI EXTENDEX Extenders
8
2. Plug the cables of the Local Unit into the back of the CPU. (See Fig. 6.)
a) Connect the blue 15HD cable end to the VGA port on the back of the CPU.
b) Connect the green 6 pin miniDIN cable end with the mouse symbol
on it to the mouse port on the back of the CPU. (KVM models only)
c) Connect the purple 6 pin miniDIN cable end with the keyboard symbol
on it to the keyboard port on the back of the CPU. (KVM models only)
Figure 6- Connect the Local Unit with VGA video and audio support to the CPU
d) If the Local Unit has Audio support, connect the black 3.5mm stereo plug into the "line out",
"spkr", or "headphones" jack on the back of the CPU. (See Fig. 6)
Notes:
If all 3 jacks are available, use the jack marked "line out".
The "line out" jack is typically lime green and may be marked with this symbol
The "spkr" jack is typically orange, and may be marked with this symbol
The "headphones" jack may be marked with this symbol
(Mouse)
(Keyboard)
S T - C 5 K V M A - 3 0 0 L o c a l U n i t
( F r o n t V i e w )
( G R E E N - M O U S E )
( P U R P L E - K E Y B O A R D )
( B L U E - V I D E O )
P S / C P U
( B L A C K - A U D I O )
3 . 5 m m S t e r e o P l u g
A U D I O C O N N E C T O R
l i n e
out
O N E W I L L B E M A R K E D " l i n e
o u t " , " s p k r " , " h e a d p h o n e s "
O R W I T H T H I S S Y M B O L
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X

NTI EXTENDEX Extenders
9
R e a r V i e w o f L o c a l U n i t
G r e e n
P o w e r L E D
Y e l l o w
T r a f f i c L E D C A T 5 C a b l e t o
R e m o t e U n i t
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X
9 V D C
A d a p t e r
A D A P T E R
B a r r e l
( I n s i d e
b a r r e l )
( O u t s i d e
b a r r e l )
P o w e r C o n n e c t o r
2 . 1 m m x 5 . 5 m m F e m a l e
9 V D C @ 1 . 0 A O U T P U T
F r o n t V i e w o f S T - C 5 V - 3 0 0 L o c a l U n i t
C a b l e t o
C P U
Connect The CAT5 Cable
Connect the CAT5 cable to the “Cat 5” port on the Local Unit. (See Fig. 7.) When properly inserted
the cable end should snap into place.
Note: If an RJ45 wall outlet is being used, connect the other
end of the extension cable to the RJ45 wall outlet.
WARNING: Never connect the XTENDEX to an
ethernet card, ethernet router, hub or switch or other
ethernet RJ45 connector of an ethernet device. Damage to
devices connected to the ethernet may result.
Figure 7- Connect CAT5 cable to Local Unit
Plug-in and Boot Up
For ST-C5V-300 and ST-C5VA-300 models
1. Plug the power cord from the monitor into the power outlet.
2. Connect the AC adapter power connector to the 9VDC ports on the Local Unit. Plug the AC adapter into a power outlet. The
green LED on the RJ45 connector of both the Remote and Local Units should illuminate, indicating that a proper power
connection has been made to them. (See Fig. 8.)
3. Turn ON the CPU and Monitor. They should each
react as if they were directly connected to each
other.
Note: The yellow LED on each RJ45 connector
will illuminate only on VA models anytime
data traffic is passing between the Local and
Remote Units, ndicating proper CAT5 cable
connection and communication.
(See Fig. 7)
Figure 8- Connect the AC adapter to the Local Unit
!

NTI EXTENDEX Extenders
10
9 V D C
A d a p t e r
A D A P T E R
B a r r e l
( I n s i d e
b a r r e l )
( O u t s i d e
b a r r e l )
P o w e r C o n n e c t o r
2 . 1 m m x 5 . 5 m m F e m a l e
9 V D C @ 1 . 0 A O U T P U T
F r o n t V i e w o f R e m o t e U n i t
For ST-C5KVM-300 and ST-C5KVMA-300 models
1. Plug the power cord from the monitor into the power outlet.
2. Connect the AC adapter power connectors to the 9VDC ports on the Remote and Local Units. Plug each AC adapter into a
power outlet. The green LED on the RJ45 connector of the Remote and Local Units should illuminate, indicating that a
proper power connection has been made. (See Fig. 9.)
3. Turn ON the CPU and Monitor. They should each react as if they were directly connected to each other.
Note: The yellow LED on each RJ45 connector will
illuminate anytime data traffic is passing between
the Local and Remote Units, indicating proper CAT5
cable connection and communication. (See Fig. 9)
Figure 9- Connect the AC adapter to the Remote Unit
VIDEO QUALITY ADJUSTMENT
It is possible that on initial startup the image on the monitor will not be as crisp as the image normally is. This is due to the
frequency characteristics of the CAT5 cable. It may be necessary to turn the "EQ" screw on the Remote Unit to equalize the
signal between the Local and Remote Units. Turn the "EQ" screw using a very small screwdriver (see Fig. 10) until the image is
crisp and clear. Turn the screw counterclockwise if the image is not crisp and clear enough. Turn the screw clockwise if the
image has been over-corrected (such that horizontal lines appear to trail or shadow at the edge of an open window). A very small
amount of rotation will make a minor change in the image. Ultimately, the image quality should improve to a satisfactory level.
Note: When the cable is longer than 150 feet some colored lines can be seen at the black-to-white transitions. This is a
normal behavior and is caused by the different twisting rates of each pair of wires in the CAT5 cable.
Figure 10- Turn "EQ" screw for video quality adjustment
-
+
F r o n t V i e w o f R e m o t e U n i t
N T I
R
N e t w o r k T e c h n o l o g i e s I n c
X T E N D E X

NTI EXTENDEX Extenders
11
TECHNICAL SPECIFICATIONS
All Models
Video Compatibility XGA, VGA
Video Coupling DC
Video Connectors HD15 male to CPU
HD15 female to monitor
Input / Output Impedance 75 Ohms
Input Horizontal Frequency Range 15kHz to 130 Hz
Input Vertical Frequency Range 30 Hz to 150 Hz
Sync Types Supported Separate and composite TTL Level and sync on green
Video Maximum I/O Levels 1.45Vp-p
Models with Keyboard/Mouse support
Keyboard/Mouse Connectors Female 6 pin miniDIN to Keyboard and Mouse
Male 6 pin miniDIN to CPU device ports
Mouse and Keyboard Compatibility All PS/2 mice and keyboards
Keyboard and Mouse Current Rating 500mA maximum
Models with Audio Support
Audio Connectors 3.5mm stereo jack to speakers
3.5mm stereo plug to CPU
Signal Type Line Level, stereo, unbalanced
Audio Frequency Response 20Hz to 20Khz, + 1dB
Signal-to-noise ratio 76 dBA
Total Harmonic Distortion and Noise 0.017%
Stereo Crosstalk -70 dB
Audio Maximum I/O Levels 3.1Vp-p
General
Interconnect Cable CAT5/5e/6 Solid UTP EIA/TIA 568 B wiring w/ male RJ45 connectors
Local Unit Power
ST-C5KVM/ST-C5KVMA
ST-C5V/ST-C5VA •120V or 240V at 50 or 60Hz-9VDC/1.0A via AC Adapter
•120V or 240V at 50 or 60Hz-9VDC/1.0A via AC Adapter
Remote Unit Power
ST-C5KVM/ST-C5KVMA
ST-C5V/ST-C5VA •120V or 240V at 50 or 60Hz-9VDC/1.0A via AC Adapter
•powered by Local Unit through CAT5 cable
Local Power Consumption (no devices
attached) •ST-C5V: 105 mA
•ST-C5VA: 220 mA
•ST-C5KVM: 200 mA
•ST-C5KVMA: 230 mA
Remote Power Consumption (no devices
attached) •ST-C5V: 105 mA
•ST-C5VA: 220 mA
•ST-C5KVM: 180 mA
•ST-C5KVMA: 205 mA
Size (In.) WxDxH 3.25x3.4x1
Distances and Resolutions for CAT5/CAT5e and CAT6 Cables
Unshielded Twisted Pair (UTP) Resolutions
UTP CABLE DISTANCE (feet) RESOLUTION
CAT5/CAT5e 300 1280x1024 at 60Hz
CAT5/CAT5e 150 1600x1200 at 60Hz
CAT5/CAT5e 100 1920x1440 at 60Hz
CAT6 300 1024x768 at 60Hz
CAT6 150 1280x1024 at 60Hz
CAT6 100 1600x1200 at 60Hz

NTI EXTENDEX Extenders
12
INTERCONNECTION CABLE WIRING METHOD
The connection cable between the remote and local is terminated with RJ45 connectors and must be wired according to the
EIA/TIA 568 B industry standard. Wiring is as per the table and drawing below.
Pin Wire Color Pair Function
1 White/Orange 2 T
2 Orange 2 R
3 White/Green 3 T
4Blue 1 R
5 White/Blue 1 T
6 Green 3 R
7 White/Brown 4 T
8Brown 4 R
Figure 11- View looking into RJ45 female
TROUBLESHOOTING
Each and every piece of every product produced by Network Technologies Inc is 100% tested to exacting specifications. We
make every effort to insure trouble-free installation and operation of our products. If problems are experienced while installing this
product, please look over the troubleshooting chart below to see if perhaps we can answer any questions that arise. If the
answer is not found in the chart, please check the FAQs (Frequently Asked Questions) at our website at http://www.nti1.com or
contact us directly for help at 1-800-742-8324 (800-RGB-TECH) in US & Canada or 1-330-562-7070 worldwide. We will be
happy to assist in any way we can.
Problem Cause Solution
Remote or Local Unit
green power LED does not
illuminate
•Power supply is not connected or
plugged-in.
•Make sure outlet is live and AC adapter is plugged-in.
(one for the Remote and one for the Local)
•Make sure 9VDC jack is fully connected
No Video on monitor •One or more video cables is loose
or disconnected.
•No power to Remote or Local
Units.
•Video Cable was not attached
when CPU was booted.
•CAT5 cable is not connected.
•Check all video cable connections
•Make sure green LEDs are illuminated for local and
remote. If not, see solutions for first problem above.
•With all the cables properly connected, reboot the CPU.
•Check cable connections. Make sure they are snapped-
in properly and completely and reboot.
Video Picture is not sharp
or is smeared
•All Video Cables are not firmly
seated.
•CAT5 cable is too long.
•The CAT5 cable is not properly
connected.
•Video not adjusted
•Check all connections. Make sure all cables are fully
seated.
•Verify length is within specified limits-300'.
•Check cable connections. Make sure they are snapped-
in properly and completely.
•Check cable connections.
•See page 10 for video quality adjustment instruction.
T
1
+
R
2
-
T
3
+
R
4
-
T
5
+
R
6
-
T
7
+
R
8
-
Pair 2 Pair 1 Pair 4
Pair 3

NTI EXTENDEX Extenders
13
Problem Cause Solution
The picture on the monitor
is black and white, rather
than color
The video cable was not attached to
the CPU when it was booted. With the cables all properly connected, reboot the CPU.
A constant vertical wobble
appears down the screen CAT5 cable is too close to a strong
power source. Reroute CAT5 cable if possible.
Monitor sometimes loses
sync, causing it to go
blank for a second or two
•Electrical power system is very
noisy, particularly the ground.
•The CAT5 cable is not properly
connected.
•Make sure the interconnection cable is not near any
power lines.
•Check cable connections. Make sure they are snapped-
in properly and completely.
Wrong or missing
characters from those
typed
The keyboard may be in the wrong
mode. •Disconnect keyboard at Remote Unit end and reconnect.
•Reboot the system.
CPU doesn't detect the
keyboard and the mouse
•Keyboard cable or mouse cable
are loose or reversed
•Cat 5 cable is too long
•Check cable connections
•Cat 5 cable can be no more than 600 feet in length
Models with Audio Support
No audio •Audio cable is not properly
plugged in
•Speakers are not plugged in
•CAT5 cable is not properly
connected
•Check all cable connections
•Verify speakers are connected and powered
•Check CAT5 cable connections
ST-C5KVM-300 ST-C5KVMA-300
ST-C5V-300 ST-C5VA-300
REMOTE UNIT LOCAL UNIT
Manual 074 Rev. 4/20/05
SERIAL NO:
DATE:
INSPECTED BY:
SERIAL NO:
DATE:
INSPECTED BY: