StarTech.com ST122UTPA Manuale utente

VGA Video Extender

VGA Video Extender over Cat5

with Audio

ST122UTPA

Instruction Manual

FCC Compliance Statement

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the

user is encouraged to try to correct the interference by one or more of the following

measures:

Reorient or relocate the receiving antenna.•

Increase the separation between the equipment and receiver.•

Connect the equipment into an outlet on a circuit different from that to which the receiver•

is connected.

Consult the dealer or an experienced radio/TV technician for help.•

Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols

This manual may make reference to trademarks, registered trademarks, and other

protected names and/or symbols of third-party companies not related in any way to

StarTech.com. Where they occur these references are for illustrative purposes only

and do not represent an endorsement of a product or service by StarTech.com, or an

endorsement of the product(s) to which this manual applies by the third-party company

in question. Regardless of any direct acknowledgement elsewhere in the body of

this document, StarTech.com hereby acknowledges that all trademarks, registered

trademarks, service marks, and other protected names and/or symbols contained in this

manual and related documents are the property of their respective holders.

Table of Contents

Introduction..................................................................... 1

Packaging Contents.....................................................................1

System Requirements .................................................................1

Installation....................................................................... 1

Hardware Installation...................................................................1

Local Unit.....................................................................................2

Remote Unit.................................................................................2

Troubleshooting .............................................................. 5

Wiring Diagram ............................................................... 6

Speciﬁcations.................................................................. 7

Technical Support........................................................... 8

Warranty Information...................................................... 8

Introduction

Packaging Contents

1 x ST122UTPA Local Unit•

1 x ST122UTPA Remote Unit•

1 x Mounting Bracket kit•

2 x Power Adapters•

1 x Instruction Manual•

System Requirements

VGA enabled video source and display device•

3.5mm mini-jack enabled audio source and speaker•

Available power outlet at local and remote locations•

Installation

NOTE: To prevent potential electrical damage to the units in some

environments, ensure that the chassis is properly grounded.

Hardware Installation

This product is composed of two different units: the Local Unit and

the Remote Unit. The Local Unit takes the output from an analog

stereo audio and VGA video signal source (usually a computer) and

transmits it to the Remote Unit over Category 5 Ethernet cable. The

remote display(s) (monitor, projector, etc) and speaker(s) connect to

the Remote Unit using standard VGA and 3.5mm mini-jack connections

respectively and displays the image and audio from the local computer

onto the remote display(s) and speaker(s).

VGA output

(female)

Audio output

(3.5mm)

Audio output

(3.5mm)

Power

connector RJ45

output Signal Equalizer

switch

VGA input

(male)

Power

connector RJ45

output Audio input

(3.5mm)

VGA output

(female)

Audio output

(3.5mm)

Audio output

(3.5mm)

Local Unit

Remote Unit

Preparing Your Site

Determine where the local computer will be located and set up the1.

computer.

Determine where the remote display(s) will be located and place/2.

mount them appropriately.

If you are using surface cabling, ensure you have enough Cat53.

unshielded twisted pair (UTP) Ethernet cabling to connect the Local

Unit to the Remote Unit’s location, and that each end is terminated

with a RJ45 connector.

If you are using premise cabling, ensure that the Cat5 unshielded

twisted pair (UTP) Ethernet Cabling between the Local Unit and

the Remote Unit has been properly terminated in a wall outlet in

each location and there is a patch cable long enough to connect the

Remote Unit and the Local Unit to their respective outlets.

Installing the Local Unit

Place the Local Unit near the local (source) computer.1.

Switch off the computer and disconnect any existing VGA cables.2.

If desired, connect the VGA cable from the local computer display(s)3.

to the “Monitor” ports on the Local Unit. This will enable you to see

video locally while an image is transmitted to the remote display.

You may choose to connect up to two local displays, one for each

“Monitor” port. Both outputs display the same image.

If desired, connect a set of computer speakers to the Audio 1 and/4.

or Audio 2 outputs on the local unit. This allows audio to be played

locally, while still being transmitted to the Remote Unit. A separate

speaker setup can be connected to the Audio outputs each. The

audio output from each will be the same.

Connect a male-to-female DE-15 VGA cable (not provided) to the5.

VGA Output on the local computer. Connect the opposite end to the

VGA IN port on the Local Unit.

Connect a 3.5mm mini-jack cable (not included) from the audio6.

output on the source device to the “Audio IN” port on the Local Unit.

Connect the Cat5 cable connection to the “CAT5 OUT” on the Local7.

Unit.

Connect the Power Adapter (provided) into an appropriate power8.

source and plug the opposite end into the power connector on the

Local Unit. The POWER LED will light up.

Installing the Remote Unit

Connect the Remote Unit to the Cat5 cable connection from the1.

Local Unit, to the “CAT5 IN” port.

Connect the VGA cable from the remote display(s) to the opposite2.

side of the Remote Unit, marked “Monitor”. You may choose to have

either one or two displays at the remote location connected to the

Remote Unit. Both outputs display the same image.

Connect the 3.5mm mini-jack cable from the remote speakers (or3.

speakers built into the display device) to the Audio 1 and/or Audio 2

port(s) on the Remote Unit. Both will output the same audio stream.

Connect the Power Adapter (provided) into an appropriate power4.

source and plug the opposite end into the power connector on the

Remote Unit. The POWER LED will light up.

CAUTION: The Category 5 Ethernet cables that connect the Local and

Remote Units carry electrical current and should not be plugged in to

other devices, as they may cause damage. We strongly recommend

marking the Ethernet cables you are using with this product at both

locations for easy identiﬁcation.

Completing the Installation

Switch on the local computer and1.

local display(s) (if used).

Switch on the display(s) at the2.

remote location.

Verify that the remote display is properly displaying the image from3.

the local computer connected to the Local Unit.

Use the Signal Equalizer to improve the image on the remote4.

display(s) based on the approximate length of Ethernet cable

between the Local and Remote Units.

Driver Installation

No driver installation is required for this video extender as it is an

external hardware only solution, invisible to the computer system.

Troubleshooting

The following section provides troubleshooting help. The solutions are

arranged in the order they should be attempted in most situations. If

you continue to have difﬁculties after attempting the solutions in this

section, please contact StarTech.com technical support.

Symptom: The remote displays are black or display a “no signal”

message.

Cause: The Remote Unit is not receiving a signal from the Local Unit.

Remedy:

Check that the display is receiving power and that all cables are1.

connected.

Check that the display is connected to the Remote Unit.2.

Symptom: The remote displays do not display an image when the

local computer wakes up from Standby Mode.

Remedy: Power the remote displays OFF and ON again.

Symptom: One or more remote displays is distorted, noisy, or displays

a “signal error” or similar error message.

Cause: The screen resolution and/or refresh rate on the local

computer may be set too high for the capabilities of the remote

display.

Remedy:

Adjust the local computer to a lower resolution and refresh rate1.

until the remote display shows an image.

Gradually increase the resolution and refresh rate on the local2.

computer until the remote displays ceases to display an image.

Return the resolution and refresh rate on the local computer to the3.

highest resolution and refresh rate setting that displayed an image

on the remote display.

Adjust the Signal Equalizer on the Remote Unit for best4.

performance.

NOTE: If you are still unable to see an image at the remote location

after trying the above solutions, it is recommended that you verify the

Ethernet cable installation to the remote display before calling technical

support. This can be used using a standard cable tester. If you do

not have a cable tester, contact a local computer service or wiring

professional.

Wiring Diagram

Pin Wire Color Pair

1 White/Orange 2

2 Orange 2

3 White/Green 3

4 Blue 1

5 White/Blue 1

6 Green 3

7 White/Brown 4

8 Brown 4

Specications

Connectors (Local)

1 x DE-15 VGA male

1 x DE-15 VGA female

2 x 3.5mm stereo mini-jack

1 x RJ45

1 x Power Connector

Connectors (Remote)

2 x DE-15 VGA female

2 x 3.5mm stereo mini-jack

1 x RJ45

1 x Power Connector

LEDs 1 x Power, 1 x Activity

Maximum Distance 150m (500 ft) @ 1024x768

Maximum Resolution 1440x900 @ 50m (150 ft)

Power Adapter 9VDC, 600mA, center positive

Dimensions 60.0mm x 83.0mm x 20.0mm

Weight 181g

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