Compact HDBaseT Transmitter - HDMI over CAT5 - USB Powered - Up to 4K
Extend HDMI to an HDBaseT display or receiver over Cat5e or CAT6 cabling
Product ID: ST121HDBTD
- Installs easily and discreetly, with a compact transmitter that's USB powered and features a built-in HDMI cable
- Maintains astonishing picture quality up to 130 feet away, with support for UltraHD 4K over non-proprietary CAT5e or CAT6 cabling
- Ensures compatibility with your existing HDBaseT hardware, with HDCP compliance
This compact transmitter uses HDBaseT™ technology to extend your HDMI® signal up to 230 feet (70 meters) over a single CAT5e or CAT6 cable, to an HDBaseT display, projector or receiver (sold separately). The transmitter supports Ultra HD and Full HD video resolutions (4K and 1080p), with support for the accompanying digital 7.1 audio.
Easy and discreet installation
For a simple and tidy installation, the HDBaseT transmitter features a small footprint and a built-in HDMI cable that connects directly to your video source, reducing clutter by eliminating the need for an HDMI cable at your local source. The transmitter is powered using USB, which means you can use a USB port on your source device to power the transmitter, which is perfect for extending from areas where power outlets may be limited.
Use your own HDBaseT display, projector or receiver
The compact transmitter works seamlessly with other HDBaseT equipment, such as HDBaseT displays, projectors, and receivers. The simplicity and versatility of this compact transmitter make it the ideal solution for transmitting an HDBaseT signal to a boardroom or classroom projector, enabling presenters in your office to quickly connect their laptop computer and share presentations or data sheets.
Seamless integration with your existing infrastructure
This transmitter extends HDMI and 7.1 surround sound over a single cable, unlike some HDMI extenders that require two cables and only offer minimal audio support. Extending HDMI with one cable reduces potential failure points while also lowering your cost in cabling.
Plus, because the HDBaseT transmitter uses standard network cables, it works with existing Ethernet infrastructures. This makes it the perfect solution for deploying digital signage in large buildings such as shopping centers, stadiums, schools or hospitals.
Astonishing 4K picture quality from an impressive distance
With high-quality HDMI cables beginning signal degradation at 30 feet, it can be difficult to maintain the brilliance of 4K video even at shorter distances. But with HDBaseT you’ll be amazed at how your Ultra HD picture, four times the resolution of high-definition 1080p, is just as brilliant, even at distances up to 130 feet from your video source.
Even if you're not running 4K, HDBaseT supports High-Definition 1080p and lower resolutions at even greater distances, up to 230 feet from your source, giving you piece of mind to know that this extender will comfortably work with any HDMI video source and display.
What is HDBaseT?
HDBaseT is a standardized, zero-latency, video distribution technology that’s revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals, over a single Ethernet cable. Offering greater versatility than traditional HDMI extenders and longer distances than HDMI cables alone, HDBaseT is the clear choice for every integrator and system designer, because it can do so much, with just a single cable.
The ST121HDBTD is backed by a 2-year StarTech.com warranty and free lifetime technical support.
Transmits your HDMI video signal from a secure location to a remote HDBaseT display, projector or receiver, in a convenient, customer-facing viewing area
Turns your HDMI video source into an HDBaseT signal that can be used to create brilliant digital signage displays in hospitals, shopping centers or restaurants
Replaces a defective HDBaseT transmitter in your existing HDBaseT infrastructure
|Cabling||Cat 5e UTP or better|
|Audio Specifications||7.1 Surround Sound|
|Max Distance||70 m / 230 ft|
|Maximum Cable Length||0.1 m [0.2 ft]|
|Maximum Digital Resolutions||4096 x 2160 (4K) @ 30 Hz|
|Wide Screen Supported||Yes|
|Local Unit Connectors||1 - HDMI (19 pin) Female Input|
|1 - RJ-45 Female Output|
|Humidity||0% - 80 % RH (non-condensing)|
|Operating Temperature||0°C to 40°C (32°F to 104°F)|
|Storage Temperature||-10°C to 60°C (14°F to 140°F)|
|Product Height||25 mm [1 in]|
|Product Length||310 mm [12.2 in]|
|Product Weight||108 g [3.8 oz]|
|Product Width||35 mm [1.4 in]|
|Shipping (Package) Weight||0.2 kg [0.5 lb]|
|What's in the Box|
|Included in Package||1 - HDMI transmitter|
|1 - 4.3 ft. [1.3 m] USB cable for power|
|1 - quick start guide|
Extend Ultra HD 4K video, an IR signal and four USB devices to a remote location, with power over cable
Extend HDMI video over CAT5 or CAT6 cabling up to 230 feet away, with a small USB-powered transmitter for discreet installation
Drivers & Downloads
Frequently Asked Questions
Before You Buy
If you need to use a video extender with a video adapter or converter, you should position the adapter or converter as close to the video source as possible. For example, if you need to take a VGA signal from a computer and send it 200 feet to an HDMI® projector, you should convert the signal from VGA to HDMI and use an HDMI extender.
Note: For more information on when to use cables or extenders, see the following FAQ: http://www.startech.com/faq/video_signal_converters_when_to_convert.
Yes, this video extender works with set-top boxes, provided the set-top box meets the following requirements:
- The set-top box must be High-bandwidth Digital Content Protection (HDCP) compliant.
- The set-top box must support devices being connected between the video source and display. If the set-top box requires a direct cable connection between the video source and display, it won't work with this video extender.
No, this device is designed to be a point-to-point solution using networking cabling only.
This device outputs HDMI video signals. If you have a display or video destination that uses another type of video connection, there are ways that you can convert the video signal or connection. These options are outlined below and organized by the target connection.
When you consider whether to convert an HDMI video signal to another connection type, it is important to know if the media that is being converted from the HDMI video connection is protected by High-bandwidth Digital Content Protection (HDCP). If the media is protected by HDCP, you cannot convert to analog video connections because they do not support HDCP. You may experience this issue when you use devices like Blu-ray players, DVD players, and certain gaming consoles.
|VGA||HDMI to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=VGA.|
|DisplayPort||HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.|
There are a few things you'll want to take care of before you deploy your new video extender in your setup.
It’s important to make sure you have everything you will need ahead of time. These items are listed below.
- Video source
- Video cables
- (Optional) Ethernet or fiber cables
- (Optional) Power adapter(s)
It’s also important to test everything in a simplified setup ahead of time to make sure everything works and that you understand how it works.
In order to set up your video extender, complete the following:
- Position your video transmitter near your video source.
- Connect the video output from your video source to the video transmitter.
- (Optional) Connect the power adapter to the video transmitter.
Note: Not all video extenders require external power, or require external power on both ends. Refer to the manual for more information.
- Position your video receiver near your display.
- Connect the video output from your video receiver to your display.
- (Optional) Connect the power adapter to the video receiver.
- If using a wired video extender, connect your network cabling between the video transmitter and the video receiver.
- (Optional) If you are extending anything else supported by your video extender connect those devices to the transmitter and receiver.
- (Optional) If you are using a wireless extender, there may be a sync button you need to press to pair the transmitter and receiver.
Now that you have set up your video extender, you can check that everything is working. You should be able to see your video source's output on the display connected to the video receiver.
If at this point you have further questions regarding a Startech.com video extender, contact our technical support team for further assistance.
To get the highest quality signal from your source to your display when you use an HDMI extender, do the following:
Make sure that the HDMI versions of the source, extender, and destination are compatible. For example, if you require 3D support, make sure that all of the devices can support 3D over HDMI.
Use the least amount of adapters, splitters, or converters as possible. Each device that you use in your setup creates additional points of potential failure and creates more steps for an HDCP key to hop through, which may cause issues with older displays. For more information on HDCP, refer to the following FAQ: http://www.startech.com/faq/video_signal_converters_HDCP.
Use an HDMI extender that exceeds the requirements of the setup. For example, if you need to extend the signal 200 feet, it is best to use an extender capable of more than 200 feet.
Make sure that all of the CAT 5/6 runs are as straight as possible, with the least amount of coiling.
Make sure that all of the patches, wall jacks, and cables use the highest possible CAT specification, (for example, CAT 6), and were tested to conform to the standard.
Use patches, wall jacks, and cables with the same pin configuration. For more information on T568A versus T568B wiring, refer to the following FAQ: http://www.startech.com/faq/network_cables_a_vs_b_pinout.
Keep the cabling away from sources of high noise.
Make sure that you use adequate electrical grounding in your setup.
When you troubleshoot issues with a video extender, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
Video and Ethernet cables
Video source (such as a DVD player or computer)
Video destination (such as a monitor or projector)
Note: When you are testing setup components, you should avoid using video adapters. For example, if you are converting a VGA source to HDMI for use with an HDMI extender, you should use an HDMI source when you test the components.
To test your setup components, try the following:
Use the cable, video extender, video source, and video destination in another setup to see if the problem is with the components or the setup.
Use a different cable, video extender, video source, and video destination in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.
When you test your cables, it is recommended that you do the following:
Test each cable individually.
Use short cables when you are testing.
When you test the video source and video destination, it is recommended that you do the following:
Remove the video extender from your setup and test to make sure that the video source and video destination work together without the video extender.
Test to make sure that the video source and video destination work together at the resolution that you want to use.
Note: In order for your setup to work properly, the video source, extender, and destination all need to support the resolution that you are using.
This device supports up to 4Kx2K resolutions @30 Hz with a color depth of 8 bits. If you are running a 4K resolution at a refresh rate higher than 30 Hz or a color depth higher than 8 bits, your display will appear blank.
To resolve this issue, you need to lower the resolution, refresh rate, or color depth, by completing any of the following:
- Connect a display to OUT 1 that is only capable of 4K at 30 Hz with a color depth no higher than 8 bits.
- Connect the least capable display to OUT 1.
- Connect an additional display to your video source (for example, a video card in a computer) and use this display to reconfigure the display connected to OUT 1 to run at 30 Hz and 8 bits color depth (or lower).
* Product appearance and specifications are subject to change without notice.