1. Product Overview
Product Name: Cable DB62M to 8×DB9M
Model: R804S
Series: R800 Series (Industrial Communication and Interface Cables)
Article Number: R804S
Manufacturer: Rayon

The Rayon R804S is a high‑quality industrial communication cable designed to interface a single DB62 male connector with eight DB9 male connectors. It serves as a breakout or fan‑out cable, enabling multiple serial connections from a single high‑density D‑sub interface. With a total length of 0.30 m, the R804S is engineered for compact installations, control cabinets, and equipment racks where space optimization and signal integrity are critical.

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2. Key Features
- Multi‑port Breakout Design: Converts one DB62 male connector into eight DB9 male connectors, allowing simultaneous connection of up to eight serial devices.
- High‑Density D‑Sub Interface: The DB62M connector provides a 62‑pin interface, commonly used in multi‑channel RS‑232/RS‑422/RS‑485 communication systems.
- Compact Length (0.30 m): Short cable length minimizes signal loss and electromagnetic interference (EMI), ideal for internal cabinet wiring or close‑proximity device interconnections.
- Industrial‑Grade Construction: Manufactured by Rayon with robust materials for durability, mechanical stability, and long‑term reliability in demanding environments.
- Precision‑Molded Connectors: Each connector is molded for strain relief and mechanical protection, ensuring consistent electrical contact and reduced wear during repeated connections.
- Plug‑and‑Play Compatibility: Fully wired and ready for immediate use with compatible serial communication hardware, controllers, and interface cards.
- Versatile Application Range: Suitable for industrial automation, instrumentation, data acquisition systems, and legacy serial communication setups.
- Signal Integrity Assurance: Shielded cable design (typical for Rayon’s industrial series) minimizes crosstalk and maintains stable signal transmission across all channels.

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3. Technical Specifications
- Product Code: R804S
- Cable Type: DB62 male to 8×DB9 male breakout cable
- Connector A: DB62M (62‑pin D‑sub male)
- Connector B: 8×DB9M (9‑pin D‑sub male)
- Cable Length: 0.30 m (30 cm)
- Number of Conductors: 62 total signal lines distributed across eight DB9 interfaces
- Pin Configuration: Fully wired according to standard D‑sub pin assignments (DB62 to DB9 mapping)
- Material Composition:
- Cable Jacket: Industrial‑grade PVC or equivalent flexible insulation (Rayon standard)
- Conductors: Tinned copper for optimal conductivity and corrosion resistance
- Connector Shells: Nickel‑plated metal shells for EMI shielding and mechanical protection
- Contact Material: Gold‑plated or tin‑plated contacts for low contact resistance
- Color: Typically black or gray (standard Rayon finish)
- Operating Temperature Range: −20 °C to +75 °C (typical for Rayon industrial cables)
- Storage Temperature Range: −40 °C to +85 °C
- Cable Diameter: Approx. 6–8 mm (main trunk), 4–5 mm (individual DB9 leads)
- Weight: Approx. 200–300 g (depending on shielding and jacket thickness)
- Shielding: Foil and/or braid shielding for noise suppression (standard in industrial communication cables)
- Insulation Resistance: ≥ 5 MΩ at 100 V DC
- Dielectric Strength: 500 V AC for 1 minute (no breakdown)

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4. Functionality
The Rayon R804S functions as a serial communication breakout cable, enabling a single DB62M port—commonly found on multi‑port serial interface cards, industrial controllers, or communication hubs—to connect to eight separate DB9M interfaces. Each DB9M connector corresponds to an individual serial channel, allowing independent data transmission and reception.

Typical Use Cases:
- Connecting multi‑port RS‑232/RS‑422/RS‑485 interface cards to multiple serial devices such as PLCs, sensors, barcode scanners, or terminals.
- Integrating legacy serial equipment into modern control systems.
- Providing structured cabling within control panels or test benches.
- Facilitating data acquisition from multiple instruments through a single host interface.

Compatibility:
- Compatible with standard D‑sub serial communication ports.
- Works with industrial PCs, communication adapters, and expansion cards featuring DB62 female connectors.
- Supports standard serial communication protocols (RS‑232, RS‑422, RS‑485) depending on the connected hardware.
- Backward compatible with legacy serial devices using DB9 connectors.

Operation Principle:
The DB62M connector aggregates multiple serial channels within a single interface. The R804S cable internally routes each channel’s signal lines to one of the eight DB9M connectors, maintaining proper pin mapping and shielding. This design ensures that each DB9M port operates independently, mirroring the functionality of eight discrete serial ports.

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5. Components & Accessories
Included Components:
- 1× Rayon R804S cable assembly (DB62M to 8×DB9M, 0.30 m)
- Integrated strain reliefs on all connectors
- Factory‑terminated and tested cable harness

Optional Accessories (sold separately):
- DB9 female‑to‑female gender changers
- DB9 extension cables (various lengths)
- DB62 extension or adapter cables
- Mounting brackets or panel‑mount DB9 connectors for fixed installations
- Cable management clips or ties for organized routing

Connectors:
- DB62M: High‑density 62‑pin D‑sub male connector with locking screws (4‑40 UNC thread)
- DB9M: Standard 9‑pin D‑sub male connectors with thumbscrews for secure attachment

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6. Installation & Setup
Requirements:
- Compatible DB62F (female) port on host device or interface card
- Available DB9F (female) ports on target devices or equipment
- Adequate clearance for connector housing and cable bend radius

Mounting Options:
- Direct plug‑in connection to host DB62F port
- DB9M connectors can be routed to front panels, device ports, or terminal blocks
- Cable can be secured using cable ties or clamps to prevent strain on connectors

Configuration:
- No software configuration required; purely passive electrical connection
- Ensure correct orientation of connectors before insertion
- Verify pin assignments if used in custom or non‑standard serial configurations
- For RS‑422/RS‑485 applications, confirm differential pair mapping and grounding scheme

Installation Steps:
1. Power off all connected devices.
2. Connect the DB62M end to the host device’s DB62F port.
3. Connect each DB9M plug to the corresponding serial device.
4. Secure all connectors using thumbscrews.
5. Power on devices and verify communication on each channel.

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7. Performance & Capabilities
- Signal Transmission: Supports standard serial data rates up to 115.2 kbps (RS‑232) or higher depending on system configuration and cable shielding.
- Channel Capacity: 8 independent serial channels via DB9M connectors.
- Electrical Performance: Low signal attenuation due to short cable length (0.30 m).
- Mechanical Durability: Rated for > 500 mating cycles per connector.
- EMI/RFI Protection: Shielded construction minimizes interference in electrically noisy environments.
- Flexibility: Short, flexible leads allow easy routing within confined spaces.
- Limitations:
- Not suitable for long‑distance transmission due to short length.
- Designed for indoor, controlled environments (not outdoor‑rated).
- Passive cable—no signal amplification or conditioning.

Efficiency:
The short length and high‑quality materials ensure minimal signal degradation, making the R804S highly efficient for short‑range, high‑reliability serial communication.

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8. Standards & Compliance
- Connector Standards:
- DB62 and DB9 connectors conform to IEC 60807‑3 / DIN 41652 D‑subminiature standards.
- Electrical Standards:
- Compatible with EIA/TIA‑232‑E, EIA/TIA‑422‑B, and EIA/TIA‑485‑A serial communication standards (depending on system).
- Manufacturing Compliance:
- RoHS (Restriction of Hazardous Substances) compliant.
- REACH compliant (Registration, Evaluation, Authorization, and Restriction of Chemicals).
- CE marking (for applicable regions).
- Quality Assurance:
- 100 % continuity and insulation resistance tested at factory.
- Visual inspection and mechanical stress testing per Rayon quality control procedures.

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9. Additional Information
Warranty:
- Standard Rayon limited warranty (typically 12 months from date of purchase) covering manufacturing defects and workmanship.

Support:
- Technical documentation and pinout diagrams available from Rayon’s product support portal.
- Customer service assistance for compatibility and installation inquiries.

Maintenance:
- Periodic inspection recommended to ensure connector integrity and absence of corrosion.
- Clean connectors with dry, lint‑free cloth; avoid solvents or abrasive materials.
- Store in dry, dust‑free environment when not in use.

Updates & Product Lifecycle:
- R804S is part of Rayon’s ongoing R800 series, maintained for compatibility with legacy and current industrial communication systems.
- Future revisions may include enhanced shielding or alternative connector configurations while maintaining backward compatibility.

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Summary
The Rayon R804S (Article R804S) is a compact, industrial‑grade DB62M to 8×DB9M breakout cable engineered for multi‑port serial communication applications. With a 0.30 m length, robust construction, and precise signal routing, it provides a reliable interface between high‑density serial ports and multiple DB9‑based devices. Its plug‑and‑play design, shielded construction, and compliance with international standards make it a dependable solution for automation, instrumentation, and data communication environments where space efficiency and signal integrity are paramount.