StarTech.com ST121R VGA Video Extender User Manual

StarTech.com ST121R VGA Video Extender

FCC Compliance Statement

This equipment has been tested and found to comply with the limits for a Class A 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 the receiver.
• Connect the equipment to 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.

Industry Canada Statement

This Class A digital apparatus complies with Canadian ICES-003. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

1. This device may not cause interference, and
2. This device must accept any interference, including interference that may cause undesired operation of the device.

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 acknowledgment 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.

Introduction

The StarTech.com Converge A/V VGA over Cat5 Video Extender system is comprised of a transmitter unit (ST1214T/ ST1218T) and a receiver unit (ST121R) and optionally a repeater unit (ST121EXT). This video extender system allows you to split and extend a single VGA source signal to up to four or eight separate remote locations. The VGA signal is extended using standard Cat5 UTP cable, with a maximum distance of up to 150m (492ft) or 250m (820ft) with a repeater.

Packaging Contents

• 1 x 4-port Transmitter Unit (ST1214T) or 1 x 8-port Transmitter Unit (ST1218T) or 1 x Receiver Unit (ST121R/ GB/ EU) or 1 x Extender (Repeater) Unit (ST121EXT/ GB/ EU)
• 1 x Universal Power Adapter (ST1214T/ ST1218T only) or 1 x Standard Power Adapter (NA or UK or EU plug)
• 1 x Mounting Bracket kit (ST121R/ GB/ EU and ST121EXT/ GB/ EU only)
• 1 x Instruction Manual

System Requirements

• VGA enabled video source and display
• Available power outlet at local and remote locations
• Both a Transmitter Unit and Receiver Unit(s)

ST1214T

ST121R / ST121RGB /ST121REU

ST121EXT / ST121EXTGB / ST121EXTEU

ST1218T

Installation

NOTE: To prevent potential electrical damage to the units in some environments, ensure that the chassis is properly grounded.

Hardware Installation

The following instructions detail how ST1214T, ST1218T, ST121R and ST121EXT units can be used to extend a VGA signal to remote displays, using a variety of different configurations.

ST1214T/ ST1218T (local) and ST121R (remote)

1. Using the Transmitter Unit, you can split the VGA signal from the source into 4/8 separate VGA signals, for reception at remote locations (up to 150m (492ft) away).

2. Situate the Transmitter so that it is near your VGA video source as well as an available power source.

3. Connect the VGA video source to the VGA IN port on the Transmitter, using a male-female VGA cable.

4. Connect the Transmitter to the power source, using the power adapter provided.

5. Situate the Receiver Unit so that it is near the intended remote display(s) and an available power source.
   OPTIONAL: with the optional mounting brackets (StarTech.com ID: ST121MOUNT), any ST121 series receiver can be securely mounted to a wall or other surface.

6. Using the Monitor Out ports, connect the Receiver to the display. Note that each Receiver unit can be connected to two separate displays simultaneously. To connect two monitors, simply connect a VGA cable from the second Monitor Out to a second display.

7. Connect the Receiver to the power source using the power adapter provided.

8. Once the Transmitter and Receiver unit(s) have been positioned, connect the Cat5 OUT ports provided by the Transmitter unit to each Receiver Unit, using standard UTP cable, with RJ45 connectors on each end.

The following diagram illustrates the connection between Transmitter and receiver units.

ST1214T/ ST1218T (local), ST121EXT (extender), ST121R (Remote)

Using the Transmitter Unit, you can split the VGA signal from the source into 4 separate VGA signals, for reception at remote locations. While the maximum transmission distance of the Transmitter is 150m (492ft), using the Extender Unit as a signal repeater adds another 100m (328ft) to the total transmission distance, for a total extension of 250m
(820ft).

1. Situate the Transmitter Unit so that it is near your VGA video source as well as an available power source.

2. Connect the VGA video source to the VGA IN port on the Transmitter, using a standard male-female VGA cable.

3. Connect the Transmitter to the power source, using the power adapter provided.

4. Situate the Extender Unit up to 150m (492ft) away from the Transmitter unit, ensuring that the Extender Unit is able to connect to an available power outlet.
   OPTIONAL: with the optional mounting brackets (StarTech.com ID: ST121MOUNT), any ST121 series receiver can be securely mounted to a wall or other surface.

5. Using a standard UTP cable with RJ45 terminators on each end, connect the Cat5 OUT port provided by the Transmitter Unit to the Cat5 IN port provided by the Extender Unit.

6. Connect the Extender Unit to an available power outlet, using the adapter provided.
   OPTIONAL: You can connect two monitors directly to the Extender Unit. To do so, simply connect the monitors to the MONITOR OUT ports on the Extender Unit.

7. Repeat step 4 to 7 for each Receiver Unit that will be used in conjunction with an Extender (up to 8).

8. Situate the Receiver Unit up to 150m (492ft) away from the Extender Unit, so that it is near the intended display(s) as well as an available power source.

9. Connect the Receiver Unit to the power source using the power adapter provided.

10. Using a standard UTP cable with RJ45 terminators on each end, connect the Cat5 OUT port provided by the Extender Unit to the Cat5 IN port provided by Receiver Unit.

NOTE: Each Receiver Unit can be connected to two separate displays simultaneously. To connect two monitors, simply connect a VGA cable from the second Monitor Out port to a second display.

The following diagram illustrates the connection between Transmitter and Receiver units, with the addition of an Extender Unit. Please note that although only one Extender is used in this illustration, up to four can be used simultaneously.

Driver Installation

No driver installation is required for this video extender as it is an external hardware only solution, invisible to the computer system.

Operation

ST1214T/ ST1218T, ST121EXT and ST121R all provide LED indicators, allowing simple operating status monitoring. Once the power adapter has been connected, the Power LED will become illuminated; similarly, when the unit is in use (i.e. transmitting a video signal), the Active LED will become illuminated.

Signal Equalizer Selector (ST121R, ST121EXT)

The Signal Equalizer Selector on the Receiver and Extender Units can be adjusted to obtain the optimal video signal for various cable lengths. There are four settings on the selector switch, indicating cables of different lengths. The following table can be used as a reference for selecting the appropriate setting:

Wiring Diagram

The Video Extenders requires an unshielded twisted pair Cat5 cable no longer than 150m (492ft). The cable must be wired according to the EIA/TIA 568B industry standard as shown below.

Specifications

Connectors

| 1 x DE-15 VGA male 1 x DE-15 VGA female

4 x RJ45 Ethernet female 1 x Power Connector

| 1 x DE-15 VGA male 2 x DE-15 VGA female

8 x RJ45 Ethernet female 1 x Power Connector

LEDs| Power, Active
Maximum Distance| 150m (492 ft) @ 1024×768
Power Supply| 12V DC, 1.5A
Dimensions| 63.89mm x 103.0mm x 20.58mm| 180.0mm x 85.0mm 20.0mm
Weight| 246g| 1300g
 | ST121R / ST121RGB / ST121REU| ST121EXT / ST121EXTGB

/ ST121EXTEU

---|---|---

Connectors

| 2 x DE-15 VGA female 1 x RJ45 Ethernet female

1 x Power Connector

| 2 x DE-15 VGA female 2 x RJ45 Ethernet female

1 x Power Connector

LEDs| Power, Active
Power Supply| 9 ~ 12V DC
Dimensions| 84.2mm x 65.0mm x 20.5mm| 64.0mm x 103.0mm x 20.6mm
Weight| 171g| 204g

Technical Support

StarTech.com’s lifetime technical support is an integral part of our commitment to provide industry-leading solutions. If you ever need help with your product, visit www.startech.com/support and access our comprehensive selection of online tools, documentation, and downloads.

For the latest drivers/software, please visit www.startech.com/downloads

Warranty Information

This product is backed by a two year warranty. In addition, StarTech.com warrants its products against defects in materials and workmanship for the periods noted, following the initial date of purchase. During this period, the products may be returned for repair, or replacement with equivalent products at our discretion. The warranty covers parts and labor costs only. StarTech.com does not warrant its products from defects or damages arising from misuse, abuse, alteration, or normal wear and tear.

Limitation of Liability

In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their officers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive, incidental, consequential, or otherwise), loss of profits, loss of business, or any pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for the product. Some states do not allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in this statement may not apply to you.

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FREQUENTLY ASKED QUESTIONS

What is the StarTech.com ST121R VGA Video Extender?

The StarTech.com ST121R is a VGA video extender that allows you to extend VGA video signals over Cat5/Cat6 Ethernet cables to reach displays at longer distances.

How does the ST121R VGA Video Extender work?

The ST121R uses a transmitter (located near the video source) and a receiver (located near the display) connected with Cat5/Cat6 Ethernet cables to transmit the VGA signal over long distances.

What is the maximum extension distance supported by the ST121R VGA Video Extender?

The ST121R VGA Video Extender typically supports extension distances of up to 500 feet (150 meters).

Does the ST121R VGA Video Extender support audio transmission as well?

No, the ST121R is designed for VGA video extension only and does not transmit audio signals.

What video resolutions are supported by the ST121R VGA Video Extender?

The ST121R VGA Video Extender generally supports VGA (640x480) to WUXGA (1920x1200) video resolutions.

Can I use the ST121R VGA Video Extender for multiple displays (video distribution)?

The ST121R is a point-to-point video extender, meaning it supports one-to-one connections from the transmitter to a single receiver.

Can I use Cat5e or Cat7 cables with the ST121R VGA Video Extender?

Yes, the ST121R is compatible with Cat5, Cat5e, Cat6, and Cat7 Ethernet cables.

Is the ST121R VGA Video Extender plug-and-play, or does it require setup?

The ST121R is generally plug-and-play and does not require additional setup. Just connect the transmitter and receiver with Ethernet cables, and it should work.

Can I use the ST121R VGA Video Extender with a Mac or PC?

Yes, the ST121R VGA Video Extender is compatible with both Mac and PC systems that have VGA video output.

Does the ST121R VGA Video Extender support hot-plugging (connecting/disconnecting while the devices are powered on)?

Hot-plugging is not recommended with the ST121R VGA Video Extender, as it may cause video signal disruption. It is best to power off the devices before connecting or disconnecting them.

Can I use the ST121R VGA Video Extender to extend signals between different rooms or floors?

Yes, the ST121R is suitable for extending VGA video signals between different rooms or floors in a building.

Does the ST121R VGA Video Extender require a power source?

Yes, both the transmitter and receiver of the ST121R require power sources using included power adapters.

Can I daisy-chain multiple ST121R VGA Video Extenders together for longer extension distances?

While technically possible, daisy-chaining video extenders can introduce signal degradation, so it is not recommended for long-distance extensions.

What types of displays can I connect to the ST121R VGA Video Extender?

You can connect VGA-compatible displays, such as monitors, projectors, or TVs, to the ST121R VGA Video Extender.

Can I use the ST121R VGA Video Extender for gaming or real-time applications?

While the ST121R can extend VGA video signals, it may introduce some latency, making it less suitable for real-time applications like gaming.

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