AT-UHD-EX-70C-TX - Audio/video converter Atlona - Free user manual and instructions

Product Type	HDBaseT Transmitter for HDMI
Brand	Atlona
Model	AT-UHD-EX-70C-TX
Video Resolution	Up to 4K/UHD @ 60 Hz with 4:2:0 chroma subsampling
HDCP Compliance	HDCP 2.2
Maximum Distance (4K)	115 ft (35 m) over CAT5e/6; 130 ft (40 m) over CAT6a/7
Maximum Distance (1080p)	200 ft (60 m) over CAT5e/6; 230 ft (70 m) over CAT6a/7
Audio Support	Multi-channel embedded audio (e.g., Dolby Digital, DTS)
Control Pass-through	RS-232 and IR (bidirectional)
Input Ports	1 x HDMI (Type A female)
Output Ports	1 x HDBaseT (RJ45)
Other Ports	RS-232 (3-pin captive screw), IR IN/OUT (4-pin), FW (mini-USB)
Power Supply	External 48V DC, 0.83A (included)
Power over HDBaseT (PoE)	Supported on receiver side (e.g., AT-UHD-EX-70C-RX)
EDID Communication	Supported
Enclosure	Metal, quarter rack width
Mounting	Surface mountable with included brackets (under-table or on-wall)
Firmware Update	Via mini-USB port using batch script
Package Contents	Transmitter, mounting brackets, screws, captive screw connectors, power supply, installation guide
Compliance	HDMI, HDCP 2.2
Warranty	Refer to Atlona warranty policy at https://atlona.com/warranty/

Frequently Asked Questions - AT-UHD-EX-70C-TX Atlona

What is the maximum cable length for 4K transmission?

For 4K resolution, the maximum distance is 115 feet (35 meters) using CAT5e or CAT6 cable, and 130 feet (40 meters) using CAT6a or CAT7 cable. Atlona recommends TIA/EIA 568-B termination.

Does the AT-UHD-EX-70C-TX support PoE (Power over Ethernet)?

The transmitter itself requires an external 48V power supply (included). However, the corresponding receiver (AT-UHD-EX-70C-RX) can be powered via HDBaseT PoE from the transmitter, provided the transmitter is powered.

Can I control the source or display via RS-232 or IR?

Yes, the transmitter passes through RS-232 and IR control signals bidirectionally. Connect a third-party controller to the RS-232 or IR IN port, and the signals will be sent to the receiver and vice versa.

What type of IR receiver or emitter should I use?

Use a 12V IR receiver (e.g., Atlona AT-IR-CS-RX) for the IR IN port. For IR OUT, connect a standard IR emitter. Both use a 4-pin captive screw connector with signal and ground wires.

How do I update the firmware?

Download the firmware .zip from Atlona's product page. Unzip and connect a mini-USB cable from the FW port to your computer. Run the appropriate batch file (UpdateVS010TX_[version].bat). The unit can be powered via USB during the update.

Is the AT-UHD-EX-70C-TX compatible with HDCP 2.2?

Yes, it is fully HDCP 2.2 compliant, allowing transmission of protected 4K content.

What cables are recommended for best performance?

Atlona recommends solid core cables (not stranded/patch) with TIA/EIA 568-B termination. Shielded (STP) cables provide better performance. For 4K, use CAT6a or CAT7 for longer distances.

Does the transmitter support EDID?

Yes, the unit supports EDID communication, ensuring proper handshake between source and display.

Can I mount the transmitter under a table or on a wall?

Yes, the package includes two mounting brackets and screws. The brackets can be attached to the sides of the unit and then mounted to a flat surface using the oval-shaped holes. Brackets can also be inverted for under-table installation.

What is included in the package?

The package contains: 1x AT-UHD-EX-70C-TX transmitter, 2x mounting brackets, 4x mounting screws, 1x 3-pin captive screw connector (RS-232), 1x 4-pin captive screw connector (IR), 1x 2-pin captive screw connector (power), 1x 48V/0.83A DC power supply, and an installation guide.

USER MANUAL AT-UHD-EX-70C-TX Atlona

4K/UHD HDMI Over HDBaseT TX with Control and PoE

AT-UHD-EX-70C-TX

The Atlona AT-UHD-EX-70C-TX is an HDBaseT transmitter for HDMI transmission up to 230 feet (70 meters) over category cable with RS-232 and IR control pass-through. It transmits video signals up to 4K/UHD @ 60 Hz with 4:2:0 chroma subsampling, plus embedded multi-channel audio. The AT-UHD-EX-70C-TX is HDCP 2.2 compliant and supports EDID communication. This HDBaseT transmitter is externally powered by the included power supply, making it ideal for extending AV and control directly to a projector with an HDBaseT input.

The AT-UHD-EX-70C-TX provides a value-oriented integration solution for simple point-to-point signal extension to a display, or expanding the scope of an AV system design with remote input connectivity. It features a quarter rack width metal enclosure and includes surface mounting brackets for easy under-table, furniture, or on-wall installation.

Package Contents

1 x AT-UHD-EX-70C-TX
2 x Mounting brackets
4 x Mounting screws
1 x 3-pin captive screw connector
1 x 4-pin captive screw connector
1 x 2-pin captive screw connector
1 x 48 V / 0.83 A DC power supply
1 x Installation Guide

IMPORTANT: Visit http://www.atlona.com/product/AT-UHD-EX-70C-TX for the latest firmware updates and Installation Guide.

Panel Descriptions

1 FW

Connect a mini-USB to USB-A type cable from this port to a computer, to update the firmware.

2 POWER / LINK

The power LED will illuminate green when receiving power. The link LED will glow yellow when signal is being sent/received between the transmitter and the receiver.

3 DC 48V

Connect the included power supply to this port.

4 RS-232

Bidirectional control port, used for pass through of commands to or from the receiver.

5 IR IN / IR OUT

Connect an IR receiver to the IR IN port. Connect an IR emitter from the IR OUT port to the included 4-pin captive screw connector.

6 HDBaseT OUT

Connect an HDBaseT cable from this port to the HDBaseT IN port on the receiver.

7 HDMI IN

Connect an HDMI cable from a source to this port.

RS-232

A 3-pin captive screw connector for RS-232 is included.

Green 3D model of a mechanical connector or terminal block (no text or symbols visible)

Pin out will be determined by the RS-232 cable and connect as RX (receive), TX (transmit) and ± (Ground).

IR

A 4-pin captive screw connector for IR is included.

Green 3D model of a mechanical connector or terminal block (no text or symbols visible)

IR IN is connected by a signal and ground wire. Use a 12V IR receiver with it (e.g. AT-IR-CS-RX purchasable through atlona.com).

IR OUT is connected by a ground and signal wire. Use an IR emitter with this port.

POWER

A single 2-pin captive screw connector is provided to connect the power supply to the unit.

Mounting Instructions

The AT-UHD-EX-70C-TX includes two mounting brackets and four mounting screws each, which can be used to attach the units to any flat surface.

1. Position one of the mounting brackets, as shown below, aligning the holes on the side of the enclosure with one set of holes on the mounting bracket.

2. Use the enclosure screws to secure the mounting bracket to the enclosure.

3. Repeat the above steps to attach the second mounting bracket to the opposite side of the unit.

1. Mount the unit using the oval-shaped holes, on each mounting bracket. If using a drywall surface, a #6 drywall screw is recommended.

NOTE: Mounting brackets can also be inverted to mount the unit under a table or other flat surface.

Black ATLONAM electronic device with ventilation slots and ports (no readable text or symbols)

Installation

1. Connect a source to the HDMI IN port on the AT-UHD-EX-70C-TX.
2. Connect a display to the HDMI OUT port on the receiver.
3. Connect an HDBaseT cable, from the HDBaseT OUT port on the AT-UHD-EX-70C-TX to the HDBaseT IN port on the receiver.
4. OPTIONAL: Connect a 3rd party controller to the transmitter using either the 3-pin RS-232 or the 2-pin IR IN ports.
5. OPTIONAL: Connect an IR receiver to the IR IN port of the transmitter.
6. OPTIONAL: Connect an IR emitter to the IR OUT port of the AT-UHD-EX-70C-TX or receiver.
7. Connect the included 48V power supply from an AC outlet to the DC 48V port on the AT-UHD-EX-70C-TX.

Cable Recommendation Guidelines

Refer to the tables below for recommended cabling when using Altona products with HDBaseT. The green bars indicate the signal quality when using each type of cable. Higher-quality signals are represented by more bars.

Core Shielding CAT5e CAT6 CAT6a CAT7
Solid UTP (unshielded) N/A
		STP (shielded)
Performance Rating (MHz) 350 500 600		800

IMPORTANT: Stranded or patch cables are not recommended due to performance issues.

Cable* Max. Distance @ 4K Max. Distance @ 1080p
CAT5e / CAT6 115 feet (35 meters) 200 feet (60 meters)
CAT6a / CAT7 130 feet (40 meters) 230 feet (70 meters)

*Atlona recommends TIA/EIA 568-B termination for optimal performance.

Updating Firmware

1. Download the firmware .zip file from the firmware tab located at http://www.atlona.com/at-uhd-ex-70c-tx.
2. Unzip the contents of the .zip file to the local PC.
3. Connect a USB to mini-USB cable from the FW port on the unit to an available USB port on the computer.

IMPORTANT: Do not disconnect the USB cable during the update process.

NOTE: The AT-UHD-EX Series can be powered over USB during the firmware update procedure. Therefore, connection of an external power supply (or HD-BaseT) is not required.

1. Identify the correct batch (.bat) script for the product that is being updated, from the table below. Note that there are separate scripts for both TX and RX units.

SKU Batch file
AT-UHD-EX-70C-TX UpdateVS010TX_[version].bat
AT-UHD-EX-70C-RX UpdateVS010RX_[version].bat

1. Double-click the batch file to execute it.

2. After the update procedure is complete, the software will go through the verification process and then display the following message:

Verification succeeded!!! :-)

Notes

Notes

Warranty

To view the product warranty, use the following link or QR code: https://atlona.com/warranty/.

Version 1 25242-R1

English Declaration of Conformity

The English version can be found under the resources tab at: https://atlona.com/product/at-uhd-ex-70c-tx/.

Chinese Declaration of Conformity 中国RoHS合格声明

由SKU列出於:

https://atlona.com/about-us/china-rohs/.

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