CRESTRON M202243001 Hd Earc Kit Transmitter Module Owner’s Manual

: August 15, 2024
: CRESTRON

CRESTRON M202243001 Hd Earc Kit Transmitter Module

Product Specifications

Model: HD-EARC KIT
Regulatory Model: M202243001
Resolution Support: Up to 4K60 4:4:4 and HDR
Audio Support: eARC and S/PDIF Audio Extraction
Power Input: 100-240VAC
Power Transmission: Over CATx cable

Product Overview

Features:

Supports resolutions up to 4K60 4:4:4 and HDR
eARC and S/PDIF Audio Extraction capabilities
Low-profile installation design
Includes power pack for easy setup

Physical Description:
The HD-EARC KIT includes the following components:

HD-TXC-EARC Front Panel
HD-TXC-EARC Rear Panel
HD-RXC-EARC Front Panel
HD-RXC-EARC Rear Panel

Product Installation Instructions

In the Box:
Ensure the following items are included in the box:

HD-TXC-EARC Transmitter
HD-RXC-EARC Receiver
HDMI Cables
Power Pack

Installation Guidelines:

Connect the devices using HDMI cables.
Connect the power pack to the transmitter.
Mount the devices using the provided guidelines (rack mounting, surface mounting, etc.).
Set the HDMI/OPTICAL switch based on your audio preference.
Observe the LED indicators for status information.

Product Resources

For additional support, training, and resources:

Visit Crestron Support and Training online.
Access Programmer and Developer Resources.
Find Product Certificates for your device.

Frequently Asked Questions (FAQ)

Can I mount the HD-EARC KIT on a ceiling?
Yes, the compact design allows for surface mounting on a ceiling.
What is the power input range for the device?
The device supports a power input range of 100-240VAC.

INTRODUCTION

The original language version of this document is U.S. English.
All other languages are a translation of the original document.
Regulatory Model: M202243001
Crestron product development software is licensed to Crestron dealers and Crestron Service Providers (CSPs) under a limited nonexclusive, nontransferable Software Development Tools License Agreement. Crestron product operating system software is licensed to Crestron dealers, CSPs, and end-users under a separate End-User License Agreement. Both of these Agreements can be found on the Crestron website at www.crestron.com/legal/software_license_agreement.
The product warranty can be found at www.crestron.com/warranty.
The specific patents that cover Crestron products are listed online at www.crestron.com/legal/patents.
Certain Crestron products contain open source software. For specific information, please visit www.crestron.com/opensource.
Crestron, the Crestron logo, and DM are either trademarks or registered trademarks of Crestron Electronics, Inc. in the United States and/or other countries. Dolby, Dolby Atmos, and Dolby Digital are either trademarks or registered trademarks of Dolby Laboratories in the United States and/or other countries. DTS, DTS-HD, and DTS-X are either trademarks or registered trademarks of DTS, Inc. in the United States and/or other countries. HDMI, the HDMI logo, and High Definition Multimedia Interface are either trademarks or registered trademarks of HDMI Licensing LLC in the United States and/or other countries. Intertek is either a trademark or registered trademark of Intertek Group in the United States and/or other countries. TOSLINK is either a trademark or registered trademark of Toshiba Corporation in the United States and/or other countries. UL is either a trademark or registered trademark of Underwriters Laboratories, Inc. in the United States and/or other countries. DisplayPort is either a trademark or registered trademark of Video Electronics Standards Association in the United States and/or other countries. Other trademarks, registered trademarks, and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Crestron disclaims any proprietary interest in the marks and names of others. Crestron is not responsible for errors in typography or photography.

Overview

The HD-EARC KIT consists of a transmitter (HD-TXC-EARC) and receiver (HD-RXC-EARC), which enable the extension of HDMI® AV and eARC (Enhanced Audio Return Channel) or optical digital audio signals. This is useful in applications where an AV source is located remotely from its destination, such as a display, projector, or codec solution. A CAT5e or greater twisted pair cable must be used to connect the transmitter and receiver.
NOTE: Power is transmitted over the CATx cable that connects the transmitter to the receiver.

Features
Key features include:

4K video with 4:4:4 color sampling
Transmitter and receiver for extension of an HDMI® AV signal and eARC or optical digital audio signals over a CAT5e or greater cable
eARC support available on HDMI® connection to display – supports all Dolby® audio formats up to Dolby Atmos® and all DTS® formats up to DTS:X®
Video, audio, and power extension over a CAT5e (or greater) cable – up to 230 ft (70 m) for resolutions up to 2K or up to 130 ft (40 m) for higher resolutions up to 4K
HDCP 2.3 compliant
RS-232, IR, EDID, and Consumer Electronics Control (CEC) pass-through capability
Low-profile installation
100-240VAC power pack included

4K60 4:4:4 and HDR Support
The HD-EARC KIT supports video resolutions up to 4K60 with 4:4:4 color sampling. HDR10, HDR10+, and Dolby Vision® video formats are also supported1.

eARC and S/PDIF Audio Extraction
The HDMI output of the HD-RXC-EARC receiver supports Enhanced Audio Return Channel (eARC) connectivity, allowing audio to be extracted from a connected display and transmitted back to the HDMI connector of the HD-TXC-EARC transmitter. Extracting audio from the display via the eARC connection means only a single cable is required for video and bidirectional audio. An optical TOSLINK® S/PDIF input is also available on the receiver to extract 2-channel LPCM digital audio from the display. These connections allow local audio content from the display (such as smart TV streaming applications) to be sent back to the transmitter. The HDMI/OPTICAL switch on the transmitter determines which audio output connection on the HD-TXC-EARC is prioritized.

Compact, Surface-Mountable Design
Compact in design, the transmitter and receiver of the HD-EARC KIT can be mounted onto a flat surface such as a wall behind a flat-panel display or on a ceiling above a projector. They can each also be attached to a single rack rail in the back of an equipment cabinet. The power pack supplied with the HD- TXC-EARC transmitter powers both units in the kit.
Note:
For the DM CATx cable connection, use Crestron DM-CBL- 8G, Crestron DM-CBL-ULTRA, or third-party CAT5e or greater cable. To safeguard against unpredictable environmental electrical noise that may impact performance at resolutions above 1080p, shielded cable and connectors are recommended for all applications, and are required when bundling multiple cables in a wire run. Wire and cables are sold separately. The DM Essentials ports in this kit are not compatible with DigitalMedia 8G+®, HDBaseT®, PoE, or PoDM technology or any other type of CATx based interface or network.

Physical Description

The HD-EARC KIT provides the following connectors, controls, and indicators.

HD-TXC-EARC Front Panel
The following illustration shows the front of the HD-TXC-EARC:

OPTICAL OUT: S/PDIF TOSLINK® connector, outputs digital audio over an optical cable to an audio receiver device
OPTICAL OUT Indicator: Green LED, indicates S/PDIF digital audio signal presence at the OPTICAL OUT connector
USB: USB Type-A female connector, for firmware loading procedures only
COM: 3-pin terminal block connector, connects to RS-232 device, bidirectional, passes RS-232 signal to and from the connected HD-RXC-EARC device’s COM port
IR IN: 2-pin terminal block connector, receives IR serial signal from a Crestron IR control port or other IR control device and transmits it to the IR OUT port of the connected HD-RXC-EARC device
IR OUT: 2-pin terminal block connector, receives IR serial signal from the IR IN port of the connected HD-RXC-EARC device, connects to a Crestron IRP2 IR emitter (sold separately)
PWR Indicator: Green LED, indicates power is supplied to the device via the included power pack

HD-TXC-EARC Rear Panel
The following illustration shows the rear of the HD-TXC-EARC:

Ground screw
24V 1.25A: DC power input, connects to the included power pack, supplies power to both the
HD-TXC-EARC and connected HD-RXC-EARC
DM OUT: DM Essentials output port, connects to the HD-RXC-EARC receiver, passes digital A/V signal, power, COM, and IR signals over a CAT5e or greater cable
HDMI/OPTICAL Switch: 2-position slide switch, selects which audio output connector is prioritized; HDMI position prioritizes extracting audio via the HDMI IN/eARC OUT port;
OPTICAL position prioritizes extracting audio via the OPTICAL OUT port
HDMI IN/eARC OUT: HDMI input and eARC output port, connects to an AV input source and/or an eARC digital audio receiver
HDMI IN/eARC OUT Indicator: Green LED, indicates HDMI input and/or eARC digital audio presence at the HDMI IN/eARC OUT port
RESET: Recessed red pushbutton, restarts the device

HD-RXC-EARC Front Panel
The following illustration shows the front of the HD-RXC-EARC:

OPTICAL IN: S/PDIF TOSLINK® connector, receives digital audio over an optical cable from a connected display
OPTICAL IN Indicator: Green LED, indicates S/PDIF digital audio signal presence at the OPTICAL IN connector
USB: USB Type-A female connector, for firmware loading procedures only
COM: 3-pin terminal block connector, connects to RS-232 device, bidirectional, passes RS-232 signal to and from the connected HD-TXC-EARC device’s COM port
IR IN: 2-pin terminal block connector, receives IR serial signal from a Crestron IR control port or other IR control device and transmits it to the IR OUT port of the connected HD-TXC-EARC device
IR OUT: 2-pin terminal block connector, receives IR serial signal from the IR IN port of the connected HD-TXC-EARC device, connects to a Crestron IRP2 IR emitter (sold separately)
PWR Indicator: Green LED, indicates power is supplied to the device via the DM Essentials connection to the HD-TXC-EARC.

HD-RXC-EARC Rear Panel
The following illustration shows the rear of the HD-RXC-EARC:

Ground screw
DM IN: DM Essentials input port, connects to the HD-TXC-EARC transmitter, receives digital A/V signal, power, COM, and IR signals over a CAT5e or greater cable, transmits digital audio and IR signals back to the transmitter
HDMI OUT/eARC IN: HDMI output and eARC input port, connects to an ARC (Audio Return Channel) or eARC-capable input of a display
HDMI OUT/eARC IN Indicator: Green LED, indicates HDMI and/or eARC digital audio presence at the HDMI OUT/eARC IN port
RESET: Recessed red pushbutton, restarts the device

Specifications

Product specifications for the HD-EARC KIT.

Product Specifications

Video
- Input Signal Types HDMI with Deep Color and 4K (DVI and Dual-Mode DisplayPort™ interface compatible2)
- Output Signal Types HDMI with Deep Color and 4K (DVI compatible3)
- Copy Protection HDCP 2.3 compliant
- Resolutions Common resolutions are listed in the following table

NOTES:

  * The maximum supported resolution is 4K60 with 4:4:4 color sampling. Custom resolutions are supported at pixel clock rates up to 600 MHz.
  * The HD-EARC KIT does not support interlaced video.

Audio
- Input Signal Types HDMI eARC, S/PDIF
- Digital Formats, HDMI Dolby Digital®, Dolby Digital EX, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos®, DTS®, DTS ES, DTS 96/24, DTS HD® High Res, DTS HD Master Audio, DTS:X®, LPCM up to 8 channels
- Digital Formats, S/PDIF Dolby Digital, Dolby Digital EX, DTS, DTS-ES, LPCM up to 6 channels
Communications
- RS-232
- Two way device control and monitoring up to 115.2k baud;
- Hardware and software handshaking
- IR One way device control via infrared up to 60 kHz
- HDMI HDCP 2.3, EDID, CEC
- DM Essentials HDCP 2.3, EDID
- eARC
- Enhanced audio return channel via HDMI;
- Supports all Dolby® audio formats up to Dolby Atmos® and all DTS® formats up to DTS:X®
Connectors – Transmitter (HD-TXC-EARC)
- 24V 1.25A
- (1) 2.1 x 5.5 mm DC power connector;
- 24VDC power input;
- PW-2420RU power pack included
- DM OUT
- (1) 8-pin RJ-45 connector, female, shielded;
- DM Essentials output port for connection to the receiver1
- HDMI IN/EARC OUT
- (1) HDMI Type A connector, female;
- HDMI digital video/audio input;
- DVI and Dual-Mode DisplayPort interface compatible2;
- Transmits eARC audio signal from the HDMI OUT/EARC IN port of the receiver
- OPTICAL OUT
- (1) TOSLINK® S/PDIF connector, female;
- Digital audio output;
- Transmits digital audio signal from the OPTICAL IN port of the receiver
- USB
- (1) USB Type-A connector, female;
- For firmware loading
- COM
- (1) 3-pin 3.5 mm detachable terminal block;
- Bidirectional RS-232 port;
- Supports RS-232 up to 115.2k baud;
- Passes communications through to the COM port of the receiver
- IR IN
- (1) 2-pin 3.5 mm detachable terminal blocks;
- Comprises (1) IR input port;
- For connection from a Crestron IR control port or other IR signal source;
- Passes the IR input signal to the IR OUT port on the receiver;
- Supports IR up to 60 kHz
- IR OUT
- (1) 2-pin 3.5 mm detachable terminal blocks;
- Comprises (1) IR output port;
- For connection to an IR emitter (IRP2, sold separately);
- Transmits the IR signal from the IR IN port on the receiver;
- Supports IR up to 60 kHz
Connectors – Receiver (HD-RXC-EARC)
- DM IN
- (1) 8-pin RJ-45 connector, female, shielded;
- DM Essentials link port for connection to the transmitter1
- HDMI OUT/EARC IN
- (1) HDMI Type A connector, female;
- HDMI digital video/audio output;
- DVI and Dual-Mode DisplayPort interface compatible3;
- Receives eARC audio signal from the connected display and passes it through to the HDMI IN/EARC OUT port of the transmitter
- OPTICAL IN
- (1) TOSLINK® S/PDIF connector, female;
- Digital audio input;
- Receives digital audio signal from a connected source and passes it to the OPTICAL OUT port of the transmitter
- USB
- (1) USB Type-A connector, female;
- For firmware loading
- COM
- (1) 3-pin 3.5 mm detachable terminal block;
- Bidirectional RS-232 port;
- Supports RS-232 up to 115.2k baud;
- Passes communications through to the COM port of the transmitter
- IR IN
- (1) 2-pin 3.5 mm detachable terminal blocks;
- Comprises (1) IR input port;
- For connection from a Crestron IR control port or other IR signal source;
- Passes the IR input signal to the IR OUT port on the transmitter;
- Supports IR up to 60 kHz
- IR OUT
- (1) 2-pin 3.5 mm detachable terminal blocks;
- Comprises (1) IR output port;
- For connection to an IR emitter (IRP2, sold separately);
- Transmits the IR signal from the IR IN port on the transmitter;
- Supports IR up to 60 kHz
Controls and Indicators – Transmitter
- HDMI/OPTICAL
- (1) 2-position slider switch;
- Selects which audio output connector to prioritize on the HD-TXC-EARC
- PWR
- (1) Green/amber bi-color LED;
- Amber indicates that the device is booting;
- Green indicates that the device is operational
- DM OUT
- (2) LEDs on RJ-45 connector, one green and one amber;
- Green indicates that DM Essentials link is established;
- Flashing amber indicates non-HDCP video;
- Solid amber indicates HDCP video
- HDMI IN/EARC OUT (1) Green LED, indicates that the device is receiving an HDMI signal and/or transmitting an eARC digital audio signal
- OPTICAL OUT (1) Green LED, indicates an S/PDIF digital audio signal is present at the OPTICAL OUT connector
Controls and Indicators – Receiver
- PWR
- (1) Green/amber bi-color LED;
- Amber indicates that the device is booting;
- Green indicates that the device is operational
- DM IN
- (2) LEDs on RJ-45 connector, one green and one amber;
- Green indicates that DM Essentials link is established;
- Flashing amber indicates non-HDCP video;
- Solid amber indicates HDCP video
- HDMI OUT/EARC IN (1) Green LED, indicates that the device is transmitting an HDMI signal and/or receiving an eARC digital audio signal
- OPTICAL IN (1) Green LED, indicates that the device is receiving a S/PDIF digital audio signal
Power
- Power Pack (included with transmitter)
- Input: 100-240VAC;
- Output: 24VDC 2.5A;
- Model: PW-2420RU
- Power Consumption 30 W typical
Environmental
- Temperature 32° to 104°F (0° to 40°C)
- Humidity
- Transmitter: 20% to 90% RH (noncondensing);
- Receiver : 20% to 90% RH (noncondensing)
- Heat Dissipation 102 BTU/hr
- Ambient Noise Level N/A (fanless)
Construction
- Chassis Metal, black finish, vented sides, 2 mounting flanges
- Mounting Surface or rack rail mount
Dimensions – Transmitter
- Height 4.13 in. (105 mm)
- Width 4.18 in. (106 mm)
- Depth 1.08 in. (27 mm)
Dimensions – Receiver
- Height 4.13 in. (105 mm)
- Width 4.18 in. (106 mm)
- Depth 1.08 in. (27 mm)
Weight
- Transmitter 12.02 oz (341 g)
- Receiver 11.95 oz (339 g)
Compliance
Regulatory Model: M202243001
Intertek® Listed for US and Canada, CE, IC, FCC Part 15 Class B digital device
Notes:

1. For the DM CATx cable connection, use Crestron DM-CBL-8G, Crestron DM-CBL-ULTRA, or third-party CAT5e or greatercable. To safeguard against unpredictable environmental electrical noise that may impact performance at resolutions above 1080p, shielded cable and connectors are recommended for all applications, and are required when bundling multiple cables in a wire run. Wire and cables are sold separately. The DM Essentials ports in this kit are not compatible with DigitalMedia 8G+®, HDBaseT®, PoE, or PoDM technology or any other type of CATx based interface or network.
2. The HDMI input requires an appropriate adapter or interface cable to accommodate a DVI or Dual-Mode DisplayPort signal. [CBL-HDI-DVI](https://www.crestron.com/model/6503571) interface cables are available separately.
3. The HDMI output requires an appropriate adapter or interface cable to accommodate a DVI signal. CBL-HDI-DVI interface cables are available separately.

Dimension Drawings

HD-TXC-EARC

HD-RXC-EARC

Installation

Use the following procedures to install the HD-EARC KIT.

In the Box

1 HD-TXC-EARC, DM® Essentials 4K60 4:4:4 eARC Transmitter for HDMI®, RS-232, IR, and Analog Audio Signal Extension over CATx Cable
1 HD-RXC-EARC, DM® Essentials 4K60 4:4:4 eARC Receiver for HDMI®, RS-232, IR, and Analog Audio Signal Extension over CATx Cable

Additional Items

HD-TXC-EARC Contents
- 2 Connector, 2-pin (2003574)
- 1 Connector, 3-pin (2003575)
- 4 Screw, 06-32, 3/4 in. Pan Head, Phillips, Steel (2007247)
- 2 Mounting Bracket, Galvannealed Metal (2057072)
- 4 Screw, 04-40, 1/4 in., Pan Head, Phillips, Black Oxide-Coated Metal (2007158)
- 4 Wall Anchor, Plastic, #6 x 1- 5/16 (2043585)
- 1 Power Pack, Desktop, 24VDC, 2.5A, Model PW-2420RU (2045873)
- 1 Power Cord, 6 ft (2042043)
HD-RXC-EARC Contents
- 2 Connector, 2-pin (2003574)
- 1 Connector, 3-pin (2003575)
- 4 Screw, 06-32, 3/4 in. Pan Head, Phillips, Steel (2007247)
- 2 Mounting Bracket, Galvannealed Metal (2057072)
- 4 Screw, 04-40, 1/4 in., Pan Head, Phillips, Black Oxide-Coated Metal (2007158)
- 4 Wall Anchor, Plastic, #6 x 1- 5/16 (2043585)

Installation Guidelines

Before installing the device, be aware of the following information regarding DM Essentials cabling, HDMI cabling, and the power connection to the device.

DM Essentials Cabling

The DM Essentials output port (DM OUT) of the HD-TXC-EARC transmitter must be connected to the DM Essentials input port (DM IN) of the HD-RXC-EARC. For DM Essentials connections, use Crestron DM-CBL-8G, Crestron DM-CBL-ULTRA, or third-party CAT5e or higher cable (Crestron DM-CBL Series cables are sold separately).
NOTE: Cables that can be used for DM Essentials connections are designed for intrabuilding use only.
To safeguard against unpredictable environmental electrical noise that may impact performance at resolutions above 1080p, shielded cable and connectors are recommended for all applications and are required when bundling multiple cables in a wire run.
The following table provides information about the maximum transmission distance for each cable type.

Maximum DM Essentials Transmission Distance

Resolution

| Frame Rate (Hz)| Color Sampling| Color Depth| DM-CBL-ULTRA

Cable

| DM-CBL-8G Cable or CAT5e (UTP) or Higher
---|---|---|---|---|---
1920×1080 FHD 1080p| 60| 4:4:4| 8, 12 bit| |
1600×1200 UXGA| 60| 4:4:4| 8, 12 bit| |
2048×1080 DCI 2K| 60| 4:4:4| 8, 12 bit| |
1920×1200 WUXGA| 60| 4:4:4| 8, 12 bit| |
2048×1152 QWXGA| 60| 4:4:4| 8, 12 bit| |
2560×1080 UWFHD| 60| 4:4:4| 8 bit| |
2560×1440 WQHD

Reduced Blanking

| 60| 4:4:4| 8 bit| 230 ft (70 m)| 195 ft (60 m)
2560×1600 WQXGA

Reduced Blanking

| 60| 4:4:4| 8 bit| |
2048×1152 QWXGA| 60| 4:4:4| 12 bit| |
3840×2160 4K UHD and| 30| 4:2:2| 12 bit| |
4096×2160 DCI 4K| 30| 4:4:4| 8 bit| |
| 60| 4:2:0| 8 bit| |
3840×2160 4K UHD and| 30| 4:4:4| 12 bit| |
---|---|---|---|---|---
4096×2160 DCI 4K| 60| 4:2:0| 12 bit| ****

130 ft (40 m) 100 ft (30 m)

| 60| 4:2:2| 12 bit|
| 60| 4:4:4| 8 bit|

HDMI Cabling

4K60 4:4:4 performance and HDR support require the use of HDMI cables and couplers with a minimum TMDS bandwidth of 18 Gbps. If 4K60 4:2:0 or 4K30 4:4:4 performance is acceptable, cables and couplers with a minimum bandwidth of 10.2 Gbps can be used. Bandwidth loss is cumulative; therefore, performance may be reduced when inserting multiple cables and couplers inline.
An HDMI input requires an appropriate adapter or interface cable to accommodate a Dual-Mode DisplayPort™ or DVI signal. An HDMI output requires an appropriate adapter or interface cable to accommodate a DVI signal. Crestron CBL-HD-DVI interface cables are sold separately.

Power Connection
A 24VDC power pack is included with the HD-TXC-EARC transmitter. This power pack supplies power to both devices in the HD-EARC KIT via the DM Essentials connection.

Install the Device

Each component of the HD-EARC KIT may be mounted onto a flat surface, under a table, or onto a single rack rail.

Rack Mounting
To mount the transmitter or receiver to a single rack rail:

Using the four included 4-40 x 1/4 in. Phillips pan head screws, attach one of the included mounting brackets to the left or right side panel of the device.
Attach the Mounting Brackets (HD-TXC-EARC Shown)
Position one of the mounting brackets so that the holes align with the holes in the rack rail.
Secure the device to the rack rail using two rack mount screws (not included).
Mount to a Rack Rail (HD-TXC-EARC Shown)

Mounting Under a Table
To mount the transmitter or receiver to the underside of a table:

Using the four included 4-40 x 1/4 in. Phillips pan head screws, attach the two included mounting brackets to the left and right side panels of the device.
Attach the Mounting Brackets (HD-TXC-EARC Shown)
Using four mounting screws (not included), attach the device to the underside of a table.
Mount Under a Table (HD-TXC-EARC Shown)

Surface Mounting
To mount the transmitter or receiver to a flat surface:

Using the four included 4-40 x 1/4 in. Phillips pan head screws, attach the two included mounting brackets to the left and right side panels of the device.
Attach the Mounting Brackets (HD-TXC-EARC Shown)
Using four # 6 Type B washers (not included), four plastic wall anchors (included), and four 6-32 x 3/4 in. Phillips pan head screws (included), secure the device to the surface.
Mount to a Surface (HD-TXC-EARC Shown)

Connect the Device

Make all necessary connections to the HD-EARC KIT as shown in the following diagrams:

**HD-TXC-EARC Front Panel Connections

**

**HD-TXC-EARC Rear Panel Connections

**

**HD-RXC-EARC Front Panel Connections

**

**HD-RXC-EARC Rear Panel Connections

**

Set the HDMI/OPTICAL Switch

The HD-TXC-EARC transmitter features a two-position HDMI/OPTICAL slide switch on its rear panel. This switch determines which audio output of the transmitter to prioritize. If this switch is not set properly, certain combinations of audio input at the HD-RXC-EARC and audio output at the
HD-TXC-EARC will prevent audio from passing.
Set the HDMI/OPTICAL switch to HDMI to prioritize the HDMI IN/eARC OUT port of the HD-TXC-EARC as the audio output. With this position selected:
- An eARC audio signal connected to the HD-RXC-EARC will be available only from the HDMI IN/eARC OUT port of the HD-TXC-EARC. This signal will not be available from the OPTICAL OUT port of the HD-TXC-EARC.
- An ARC audio signal connected to the HD-RXC-EARC will be available from both the HDMI IN/eARC OUT and OPTICAL OUT ports of the HD-TXC-EARC.
- An S/PDIF audio signal connected to the HD-RXC-EARC will not be available from either the HDMI IN/eARC OUT or OPTICAL OUT ports of the HD-TXC-EARC. No audio will pass from either connector in this configuration.
Set the HDMI/OPTICAL switch to OPTICAL to prioritize the OPTICAL OUT port of the HD-TXC-EARC as the audio output. With this position selected:
- An ARC or eARC audio signal connected to the HD-RXC-EARC will be available from both the HDMI IN/eARC OUT and OPTICAL OUT ports of the HD-TXC-EARC.
- An S/PDIF audio signal connected to the HD-RXC-EARC will be available from the OPTICAL OUT port of the HD-TXC-EARC. This signal will not be available from the HDMI IN/eARC OUT port of the HD-TXC-EARC.
Press the RESET button on the HD-TXC-EARC once the switch is set to the desired position. The new setting will take effect after the device has rebooted.

Observe the LED Indicators

Refer to the following table for information about the LED indicators on the HD-TXC-EARC:

LED Indicator	Color	Meaning
PWR	Green	The device is powered on and fully booted.
	Amber	The device is receiving power and is booting up.
	Off	The device is not receiving power.
OPTICAL OUT	Green	An S/PDIF digital audio output signal is detected at the

OPTICAL OUT connector.

| Off| No audio signal is detected at the OPTICAL OUT

connector.

HDMI IN/eARC OUT| Green| The device is receiving an HDMI signal and/or transmitting an eARC digital audio signal at the HDMI IN/eARC OUT connector.
| Off| No AV signals are detected at the HDMI IN/eARC OUT

connector.

Refer to the following table for information about the LED indicators on the HD-RXC-EARC:

LED Indicator	Color	Meaning
PWR	Green	The device is powered on and fully booted.
	Amber	The device is receiving power and is booting up.
	Off	The device is not receiving power.
OPTICAL IN	Green	An S/PDIF digital audio input signal is detected at the

OPTICAL IN connector.

| Off| No audio signal is detected at the OPTICAL IN

connector.

HDMI OUT/eARC IN| Green| The device is transmitting an HDMI signal and/or receiving an eARC digital audio signal at the HDMI OUT/eARC IN connector.
| Off| No AV signals are detected at the HDMI OUT/eARC IN

connector.

Resources

The following resources are provided for the HD-EARC KIT.
NOTE: You may need to provide your Crestron.com web account credentials when prompted to access some of the following resources.

Crestron Support and Training

Programmer and Developer Resources

help.crestron.com: Provides help files for Crestron programming tools such as SIMPL, SIMPL#, and Crestron Toolbox™ software
developer.crestron.com: Provides developer documentation for Crestron APIs, SDKs, and other development tools