1. Introduction
This manual provides detailed instructions for the J-Tech Digital JTECH-18GAE2 HDMI Audio Extractor and Embedder. This device allows you to extract digital audio signals from an HDMI 2.0 source and convert them to analog stereo (3.5mm) or digital optical (SPDIF) formats. Additionally, it can embed external analog audio into an HDMI signal. It supports high-resolution video up to 4K 60Hz HDR10, 1080p 120Hz, and 1080p 144Hz, ensuring compatibility with modern audio-video equipment while also providing solutions for integrating with legacy AV systems.
2. Features
- HDMI Audio Extraction: De-embed digital audio from an HDMI 2.0 source to analog stereo (3.5mm) or digital optical (SPDIF).
- HDMI Audio Embedding: Integrate third-party analog audio into an HDMI signal.
- High Resolution Support: Compatible with 4K 60Hz HDR10, 1080p 120Hz, and 1080p 144Hz video content.
- HDCP Compliance: Fully compliant with HDCP 1.4 and 2.2 for broad compatibility.
- Audio EDID Settings: Features built-in EDID settings (2CH/5.1CH) and a pass-thru (TV) function to optimize audio output.
- Bandwidth: Supports 18Gbps bandwidth.
3. Package Contents
Verify that all items are present in the package:
- 1x J-Tech Digital JTECH-18GAE2 4K HDMI Audio Embedder & Extractor
- 1x 5V DC Power Supply
- 1x User Manual
This image displays the JTECH-18GAE2 unit, its 5V DC power adapter, and the included user manual, illustrating all components found within the product packaging.
4. Product Overview
4.1 Device Layout
This image shows the J-Tech Digital JTECH-18GAE2 unit from an angled front perspective, highlighting its compact design and visible ports such as HDMI Out, SPDIF, and Audio Out.
4.2 Dimensions
This diagram provides the physical dimensions of the JTECH-18GAE2 device in both inches and centimeters, indicating its length, width, and height for installation planning.
4.3 Interface Diagram
This image illustrates the various input and output ports on the JTECH-18GAE2, including HDMI In, HDMI Out, Audio In, SPDIF, Audio Out, DC/5V power, and the Audio Settings dip switches, along with their labels.
5. Setup Instructions
Follow these steps to connect your JTECH-18GAE2 device:
- Connect your HDMI source device (e.g., Blu-ray player, gaming console) to the HDMI In port on the JTECH-18GAE2 using an HDMI cable.
- Connect an HDMI display (e.g., TV, monitor) to the HDMI Out port on the JTECH-18GAE2 using an HDMI cable.
- For audio extraction:
- To extract digital optical audio, connect an optical cable from the SPDIF output of the JTECH-18GAE2 to your audio receiver or soundbar.
- To extract analog stereo audio, connect a 3.5mm audio cable from the Audio Out port of the JTECH-18GAE2 to your analog audio system.
- For audio embedding: Connect an analog audio source (e.g., microphone, audio player) to the Audio In port using a 3.5mm audio cable.
- Connect the provided 5V DC power adapter to the DC/5V port on the JTECH-18GAE2 and then plug it into a power outlet.
- Adjust the Audio Settings dip switches as needed (refer to Section 6.1 for details).
This diagram visually guides the user through connecting an HDMI source, the JTECH-18GAE2, a 4K TV, and a soundbar, indicating the flow of HDMI, SPDIF, and analog audio cables.
6. Operating Instructions
6.1 Audio EDID Settings
The JTECH-18GAE2 features dip switches for configuring audio EDID settings. These settings determine how the device processes and outputs audio. Adjust them according to your audio system's capabilities and desired output.
| Switch 1 | Switch 2 | Mode | Description |
|---|---|---|---|
| OFF | OFF | Audio Embedder | Embeds external analog audio into the HDMI signal. |
| ON | OFF | PCM 2.0 Audio Extraction | Extracts 2-channel stereo audio (PCM) to SPDIF and 3.5mm outputs. |
| OFF | ON | 5.1 Audio Extraction | Extracts 5.1 channel audio (Dolby Digital/DTS) to SPDIF output. 3.5mm output will be 2-channel stereo. |
| ON | ON | Pass-Through (TV) | Passes the audio EDID directly from the connected display (TV) to the source device. |
Note: Always power cycle the device after changing dip switch settings for the changes to take effect.
7. Application Examples
The JTECH-18GAE2 can be used in various scenarios to manage HDMI audio:
- Home Theater Integration: Connect modern HDMI sources to older AV receivers that lack HDMI inputs by extracting audio via SPDIF or 3.5mm.
- Gaming Setups: Route game audio to a separate sound system while maintaining high-quality video to your display.
- Content Creation: Embed commentary or external audio into a video stream before sending it to a recorder or streaming device.
- Commercial Displays: Integrate custom audio with digital signage or multi-screen video walls.
This image depicts the JTECH-18GAE2 integrated into a professional multi-display environment, demonstrating its use in routing audio from a video source to a sound system while video is distributed across multiple screens.
8. Specifications
| Feature | Specification |
|---|---|
| Product Dimensions | 3.86 x 3.25 x 0.04 inches |
| Item Model Number | JTECH-18GAE2 |
| Brand | J-Tech Digital |
| Maximum Supply Voltage | 5 Volts |
| Minimum Supply Voltage | 5 Volts (DC) |
| Mounting Type | Tabletop/Desktop |
| Number of Pins (HDMI) | 19 |
| Video Resolution | Up to 4K@60Hz HDR10, 1080p@120Hz, 1080p@144Hz |
| HDCP Compliance | HDCP 1.4 & 2.2 |
| Audio Output Formats | SPDIF (Optical), 3.5mm Stereo |
| Audio Input Format | 3.5mm Stereo (for embedding) |
9. Troubleshooting
If you encounter issues with your JTECH-18GAE2, refer to the following common troubleshooting steps:
- No Video Output:
- Ensure all HDMI cables are securely connected.
- Verify the power adapter is correctly connected and the device is powered on.
- Try a different HDMI cable or source device to rule out cable or source issues.
- Check if your display supports the resolution and refresh rate from your source.
- No Audio Output:
- Confirm that audio cables (SPDIF or 3.5mm) are properly connected to your audio system.
- Verify the Audio Settings dip switches are set correctly for your desired audio format (e.g., 2CH for stereo, 5.1CH for surround sound). Power cycle after changing settings.
- Ensure your audio receiver or soundbar is set to the correct input source.
- If using 5.1CH extraction, ensure your audio system supports Dolby Digital or DTS passthrough.
- Test with a different audio source or cable.
- Audio/Video Intermittent or Flickering:
- Check for loose cable connections.
- Ensure the power supply is stable.
- Reduce cable lengths if possible, especially for 4K signals.
- Try setting the Audio Settings to Pass-Through (TV) mode.
- CEC Issues:
- CEC functionality can vary between devices. If experiencing unexpected behavior, try disabling CEC on your connected devices or using the Pass-Through (TV) EDID setting.
10. Maintenance
To ensure the longevity and optimal performance of your JTECH-18GAE2, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Avoid liquid cleaners or abrasive materials.
- Ventilation: Ensure the device is placed in a well-ventilated area to prevent overheating. Do not block ventilation openings.
- Power: Use only the provided 5V DC power adapter. Disconnect power during electrical storms or when unused for long periods.
- Environment: Keep the device away from moisture, extreme temperatures, and direct sunlight.
11. Warranty and Support
All J-Tech Digital products include a One-Year Manufacturer Replacement Warranty. Additionally, free lifetime technical support is available from our customer support team located in Stafford, TX.
Support Hours: Monday through Friday, 9 AM – 6 PM CST.
For technical assistance, please refer to the contact information provided on our seller page or visit the official J-Tech Digital website.
For more information, visit: www.jtechdigital.com
