1. Introduction
This manual provides detailed instructions for the proper use, installation, and maintenance of the VELLEMAN CD023 3.5mm Stereo Plug to 3-Pin Screw Terminal. This product is designed to facilitate easy connection of audio signals from a 3.5mm stereo jack to bare wire connections via a screw terminal block. Each package contains five units of the CD023 connector.
2. Safety Information
- Ensure all power is disconnected from audio equipment before making any connections.
- Do not exceed the maximum voltage of 12V or maximum current of 4A specified for this device.
- Avoid operating the device in environments exceeding 30°C (86°F).
- This product is intended for low-voltage audio signal applications. Do not use with mains voltage.
- Keep out of reach of children.
3. Package Contents
Each VELLEMAN CD023 package includes:
- 5 x VELLEMAN CD023 3.5mm Stereo Plug to 3-Pin Screw Terminal units
4. Product Overview
The VELLEMAN CD023 is a compact adapter that converts a standard 3.5mm stereo audio plug into a 3-pin screw terminal block. This allows for easy and secure connection of audio cables without soldering. The 3.5mm plug is commonly used for headphones, portable audio devices, and auxiliary inputs.
Figure 1: VELLEMAN CD023 3.5mm Stereo Plug to 3-Pin Screw Terminal. This image displays the connector with its 3.5mm stereo plug on one end and the green 3-pin screw terminal block on the other. Markings for Left (L), Right (R), and Ground (⊥) are visible above the screw terminals.
The screw terminal block features three connection points, typically designated for Left audio channel, Right audio channel, and a common Ground connection. These are often marked as L, R, and a ground symbol (⊥ or GND) on the connector body.
5. Specifications
| Feature | Specification |
|---|---|
| Connector Type | 3.5mm Stereo Plug to 3-Pin Screw Terminal |
| Maximum Voltage | 12V |
| Maximum Current | 4A |
| Maximum Operating Temperature | 30°C (86°F) |
| Number of Poles | 3 |
| Product Dimensions | 0.59 x 1.97 x 3.94 inches |
| Item Weight | 0.16 ounces |
| Model Number | CD023 |
6. Setup and Installation
Follow these steps to correctly connect your audio wires to the VELLEMAN CD023:
- Prepare Wires: Carefully strip approximately 5-7mm (0.2-0.3 inches) of insulation from the ends of your audio wires. Ensure the bare wire strands are twisted neatly to prevent stray strands.
- Identify Terminals: Observe the markings on the screw terminal block. Typically, these are:
- L: Left audio channel
- R: Right audio channel
- ⊥ (Ground): Common ground for both channels
- Connect Wires:
- Using a small screwdriver, loosen the screw for the Left (L) terminal.
- Insert the prepared bare wire for the left audio channel into the terminal opening.
- Tighten the screw firmly to secure the wire. Gently tug on the wire to ensure it is held securely.
- Repeat this process for the Right (R) terminal and the Ground (⊥) terminal, connecting the corresponding wires.
- Verify Connections: Double-check that all wires are securely fastened and that there are no loose strands that could cause a short circuit. Ensure correct polarity if applicable to your audio setup.
Once the wires are connected, the 3.5mm stereo plug can be inserted into any compatible 3.5mm stereo jack on your audio source or destination device.
7. Operating Instructions
The VELLEMAN CD023 functions as a passive adapter. Once properly wired and connected, it facilitates the transmission of audio signals. No specific operational steps are required for the adapter itself beyond its initial setup.
- Insert the 3.5mm plug into the audio input/output jack of your device (e.g., amplifier, speaker, computer).
- Ensure the device connected to the screw terminals is powered on and configured correctly to receive or send audio signals.
- Adjust volume levels on your audio equipment as needed.
8. Maintenance
The VELLEMAN CD023 requires minimal maintenance:
- Keep the connector clean and free from dust and debris. Use a dry, soft cloth for cleaning.
- Avoid exposing the connector to excessive moisture or extreme temperatures.
- Periodically check screw terminals for tightness, especially if the connected wires are subject to movement or vibration.
- Do not attempt to disassemble the unit, as it contains no user-serviceable parts.
9. Troubleshooting
If you encounter issues, consider the following:
- No Audio Output/Input:
- Verify that the 3.5mm plug is fully inserted into the jack.
- Check all wire connections at the screw terminals for tightness and correct polarity (Left, Right, Ground).
- Ensure the audio source and destination devices are powered on and functioning correctly.
- Test with a different audio cable or device to isolate the problem.
- Distorted Audio:
- Check for loose or frayed wire strands at the screw terminals that might be causing a short circuit.
- Ensure the audio signal levels are not too high, causing clipping or distortion in the connected equipment.
- Verify that the ground connection is secure.
- Intermittent Audio:
- Inspect the 3.5mm plug for damage or corrosion.
- Re-tighten all screw terminal connections.
10. Warranty and Support
For warranty information and technical support, please refer to the Velleman official website or contact your authorized Velleman dealer. Keep your purchase receipt as proof of purchase.
Velleman is a registered trademark. All rights reserved.
