1. Bubuka jeung Leuwihview
The Radial Catapult TX4M is a robust 4-channel audio snake module designed for professional audio applications. It facilitates the transmission of analog or AES digital audio signals over standard Cat 5 or Cat 6 shielded twisted pair cable. This innovative design allows for cost-effective and efficient audio signal routing across various environments, from live stages to pre-wired network installations in commercial buildings.
The TX4M module acts as a transmitter, converting four balanced audio signals into a format suitable for Cat 5/6 transmission. It is typically paired with a corresponding Catapult receiver module (e.g., RX4M, RX4L, RX4Q) to complete the audio signal path. This unit is engineered for durability and reliable performance, featuring a heavy-duty 14-gauge steel chassis.
2. Fitur konci
- 4-Channel Audio Transmission: Supports four independent audio channels.
- Cat 5/6 Cable Connectivity: Utilizes standard shielded Cat 5 or Cat 6 Ethernet cable for signal transmission, offering a cost-effective and readily available cabling solution.
- XLR Inputs and Isolated Outputs: Equipped with four XLR inputs and four XLR isolated outputs for microphone-level signals.
- Neutrik Ethercon Connectors: Features durable Ethercon ports for secure and reliable Cat 5/6 cable connections.
- Ground lift switch: Includes a ground lift switch to help eliminate hum and buzz caused by ground loops, enhancing signal integrity.
- Konstruksi awét: Housed in a solid 14-gauge steel chassis with a powder-coat finish, designed to withstand rigorous touring and professional use.
- Made in Canada: Indicates manufacturing origin.
3. Setup Guide
Follow these steps to set up your Radial Catapult TX4M module:
- panempatan: Position the TX4M module near your audio sources (e.g., microphones, mixing console outputs).
- Sambungkeun Sumber Audio: Connect your microphone-level audio sources to the four XLR INPUT connectors on the TX4M using standard XLR cables.
- Connect Cat 5/6 Cable: Connect a shielded Cat 5 or Cat 6 Ethernet cable from one of the Ethercon ports on the TX4M to the corresponding Ethercon input on a Radial Catapult receiver module (sold separately). Ensure the cable is securely latched.
- Connect to Destination: On the receiver module, connect the XLR outputs to your destination device (e.g., mixing console inputs, audio interface).
- Grounding: If hum or buzz is present, engage the GROUND LIFT switch on either the TX4M or the receiver module to break potential ground loops. Experiment with the switch position to achieve the cleanest signal.
Note: Always use shielded Cat 5 or Cat 6 cable for optimal performance and noise rejection. Unshielded cables may introduce interference.
4. Parentah Operasi
The Radial Catapult TX4M operates passively, requiring no external power. Once connected, it transparently transmits audio signals. The primary operational consideration is the proper use of the ground lift feature.
- Aliran Sinyal: Audio signals connected to the XLR INPUTs on the TX4M are converted and sent over the Cat 5/6 cable to a compatible Catapult receiver module. The receiver module then converts the signals back to standard XLR outputs.
- Angkat taneuh: The 'LIFT' switch on the TX4M (and typically on the receiver module) is designed to isolate the ground connection of the Cat 5/6 cable. If you experience audible hum or buzz in your audio system, toggle this switch. Often, lifting the ground at one end of the Cat 5/6 cable run can resolve ground loop issues. It is generally recommended to lift the ground at the receiving end if possible, but experimentation may be necessary.
- Kaluaran terasing: The TX4M features isolated microphone outputs. This means the outputs are transformer-isolated, providing electrical isolation that can prevent noise and hum, especially when splitting signals to multiple destinations like Front-of-House (FOH), monitors, or recording systems.
5. Sambungan jeung Kontrol

Figure 1: Front Panel of Radial Catapult TX4M
This image displays the front panel of the Radial Catapult TX4M. It features four XLR input connectors at the bottom, labeled 1 through 4. Above these are four XLR isolated output connectors, also labeled 1 through 4. On the right side, there are two Ethercon ports for Cat 5/6 cable connection, labeled 'ISO' and 'OUT', along with a 'LIFT' switch. The unit is blue with white lettering, indicating 'CATAPULT TX4M', '4 CH AUDIO SNAKE - ISOLATED MIC OUTS', and 'AUDIO OVER CAT-5 EXTENDER'.
5.1. Input Connectors
- XLR INPUT (1-4): Four female XLR connectors for connecting balanced microphone-level audio sources.
5.2. Panyambung kaluaran
- XLR ISO (1-4): Four male XLR connectors providing transformer-isolated microphone-level audio outputs. These are typically used as thru-puts or for splitting signals.
- ETHERCON (ISO/OUT): Two Neutrik Ethercon RJ45 connectors for connecting shielded Cat 5 or Cat 6 cable to a compatible Catapult receiver module. These ports transmit the four audio channels.
5.3. Kadali
- LIFT Switch: A push-button switch that disconnects the ground pin of the Cat 5/6 cable connection, used to eliminate hum and buzz caused by ground loops.
6. Cara ngungkulan
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Hum or Buzz in Audio | Ground loop, unshielded Cat 5/6 cable, faulty cable. |
|
| Teu Aya Sinyal Audio | Incorrect connections, faulty cables, source device issue, receiver module issue. |
|
| Audio Intermittent | Loose cable connections, damaged cable. |
|
7. Spésifikasi
| Fitur | Rincian |
|---|---|
| Modél | SRA CATAPULT-TX4M |
| Saluran | 4 (Opat) |
| Téhnologi konektipitas | Ethernet (Cat 5/6) |
| Tipe Panyambung | XLR (Input/Output), Neutrik Ethercon (Cat 5/6) |
| Mode Kaluaran Audio | Stereo, Surround (4 Channel Configuration) |
| Fitur husus | Customizable Configurations, Noise Reduction (Ground Lift) |
| Dimensi produk | 9.25 x 5.25 x 2.55 inci |
| Item Beurat | 2.95 pon |
| Warna | Biru |
| Produsén | Téknik Radial |
8. Pangropéa
The Radial Catapult TX4M is designed for minimal maintenance. Following these guidelines will help ensure its longevity and reliable performance:
- beberesih: Use a soft, dry cloth to clean the exterior of the unit. Avoid abrasive cleaners or solvents, which can damage the finish.
- Panyimpenan: Simpen unit dina tempat anu tiis sareng garing jauh tina sinar panonpoé langsung sareng suhu anu ekstrim.
- Pamariksaan kabel: Regularly inspect all connected XLR and Cat 5/6 cables for signs of wear, cuts, or damage. Replace damaged cables immediately to prevent signal issues.
- Perawatan Konektor: Keep connectors free of dust and debris. If necessary, use compressed air to clean inside the ports.
9. Garansi jeung Rojongan
For detailed information regarding the product warranty, technical support, and service, please refer to the official Radial Engineering website or contact their customer support directly. Warranty terms and conditions may vary by region and purchase date.
Pabrikan: Téknik Radial
Websitus: www.radialeng.com





