Introduction
This manual provides essential information for the proper handling, installation, and maintenance of the Belden 8723 Shielded Twisted Pair Multi-Conductor Cable. The Belden 8723 is designed for applications requiring reliable signal transmission with protection against electromagnetic interference.
The cable features 22 AWG stranded (7x30) tinned copper conductors, polypropylene insulation, twisted pairs, individual Beldfoil® shielding (100% coverage), a 24 AWG stranded tinned copper drain wire, and a PVC jacket.
Setup and Installation
Proper installation is crucial for optimal performance and longevity of the cable. Follow these guidelines:
- Inspection: Before installation, visually inspect the cable for any physical damage, kinks, or abrasions. Do not install damaged cable.
- Cable Routing: Plan the cable route to minimize bends, especially sharp ones, which can stress the conductors and shielding. Adhere to the cable's minimum bend radius specifications.
- Stripping: Carefully strip the outer PVC jacket using a suitable cable stripping tool. Avoid nicking the inner insulation or shielding.
- Shielding Termination: The individual Beldfoil® shields and the 24 AWG tinned copper drain wire must be properly terminated to ensure effective EMI/RFI protection. Ensure good electrical contact with ground at appropriate points as per system design.
- Conductor Termination: Terminate the 22 AWG tinned copper conductors to the appropriate connectors or terminals. Ensure secure connections to prevent signal loss or intermittent contact.
- Strain Relief: Always provide adequate strain relief at termination points to prevent tension on the conductors and connections.
- Environmental Considerations: Ensure the installation environment is within the cable's specified operating temperature and humidity ranges. Protect the cable from physical damage, excessive heat, and corrosive substances.
Figure 1: Cross-section view of the Belden 8723 cable. This diagram illustrates the outer PVC jacket, the individually shielded twisted pairs with polypropylene insulation, and the tinned copper conductors, along with the drain wire.
Operation
The Belden 8723 cable functions as a passive component within an electrical or electronic system. Once properly installed and terminated, it facilitates the transmission of signals or power according to the system's design. No direct user operation is required for the cable itself.
- Signal Integrity: The twisted pair design and individual Beldfoil® shielding are engineered to maintain signal integrity and minimize crosstalk and external interference.
- Grounding: Ensure that the drain wire and shielding are correctly grounded as per application requirements to maximize noise rejection.
Maintenance
The Belden 8723 cable requires minimal maintenance. Regular inspections can help ensure continued reliable performance.
- Visual Inspection: Periodically inspect exposed sections of the cable for signs of wear, cuts, abrasions, or damage from environmental factors (e.g., excessive heat, chemical exposure).
- Connection Integrity: Verify that all cable terminations remain secure and free from corrosion. Loose connections can lead to signal degradation or intermittent failures.
- Cleaning: If necessary, gently clean the outer jacket of the cable with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: When storing unused cable, keep it in a cool, dry place, away from direct sunlight and extreme temperatures. Store on a reel or in large coils to prevent kinking.
Troubleshooting
If issues arise with signal transmission or system performance, consider the following troubleshooting steps related to the cable:
- No Signal/Intermittent Signal:
- Check all connections for proper termination and tightness.
- Inspect the cable for visible damage (cuts, severe kinks).
- Verify continuity of conductors using a multimeter.
- Excessive Noise/Interference:
- Ensure the cable's shielding and drain wire are correctly grounded.
- Verify that the shielding is intact and not compromised.
- Check for external sources of electromagnetic interference near the cable run.
- Incorrect Polarity:
- Confirm that conductors are connected to the correct terminals at both ends of the cable.
If troubleshooting steps do not resolve the issue, consult a qualified technician or refer to the documentation for the connected equipment.
Specifications
| Feature | Detail |
|---|---|
| Model Number | 8723 |
| Brand | Belden |
| Conductor Size | 22 AWG |
| Conductor Type | Stranded (7x30) Tinned Copper |
| Insulation Material | Polypropylene |
| Shielding Type | Individual Beldfoil® (100% coverage) |
| Drain Wire | 24 AWG Stranded Tinned Copper |
| Jacket Material | PVC |
| Cable Type | Shielded Twisted Pair Multi-Conductor |
| Material | Copper |
| Item Weight | 3 pounds (per unit length, e.g., 100 FT) |
| UPC | 612825214441 |
Warranty Information
Belden products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to the Belden 8723 cable, please refer to the official Belden website or contact Belden customer service. Warranty coverage typically addresses manufacturing defects under normal use conditions.
Customer Support
For technical assistance, product inquiries, or support, please contact Belden directly:
- Belden Official Website: www.belden.com
- Refer to the website for contact numbers and support resources in your region.