air-flow direction front-to-back cooling – Official Technical Overview & Hardware Datasheet

PRODUCT IDENTIFICATION

PRODUCT SERIES: Precision Thermal Series | Air Flow Architecture: Front-to-Back Cooling
MODEL VARIANTS: PTS-FB-1U, PTS-FB-2U, PTS-FB-4U
This document defines the mechanical, thermal, and operational characteristics of high-performance telecommunications equipment utilizing FRONT-TO-BACK air flow direction. The architecture is optimized for standardized datacenter hot-aisle/cold-aisle containment strategies, ensuring predictable thermal management and component longevity.

SYSTEM HARDWARE TOPOLOGY

The front-to-back cooling topology establishes a linear thermal gradient: intake via cold aisle (front bezel) → forced convection over hot-swappable line cards, fabric modules, and power supply units → exhaust into hot aisle (rear of chassis). Chassis design integrates low-impedance air ducts, variable-speed dual-rotor fan trays (N+1 redundancy), and thermal sensors at 0.1m intervals. Backplane architecture isolates high-power ASICs and PHYs into dedicated airflow lanes. All front-panel indicators (Power, Status, Alarm, Fan) remain visible during full-rate operation.

DATA & CONTROL PLANE CAPABILITIES

Forwarding Plane: Non-blocking switching capacity up to 3.2 Tbps (2U configuration).
Control Plane: Dual-core ARM Cortex-A72 management processor with 16GB DDR4 RAM, 64GB eMMC flash.
Thermal-Aware Scheduling: Dynamic fan speed modulation based on inlet temperature sensors; overtemperature protection with automatic core frequency reduction.

COMPONENT BREAKDOWN

– Air Intake Bezel: Removable, washable 70µm particulate filter (optional HEPA grade).
– Fan Tray Module: Hot-swappable, 12V DC brushless counter-rotating fans; max 12,000 RPM; acoustic emission ≤ 65 dBA at 25°C ambient.
– Power Supply Unit (PSU): Front-access, 800W AC/DC (1+1 or 2+2 redundancy); 80 PLUS Titanium efficiency; internal cooling air path separate from system airflow.
– Line Card Slot: 4x to 16x slots depending on chassis; each card includes front-to-back ducted heatsink.
– Rear Exhaust Port: Perforated metal grille with EMI fingerstock gasket; direct hot-aisle alignment.

OPERATIONAL SPECS MATRIX

– Air Flow Rate: 120 CFM (1U), 240 CFM (2U), 480 CFM (4U) at 100% fan speed.
– Static Pressure: 12.5 mm H₂O (typical).
– Thermal Design Power (TDP) Support: Up to 400W per line card; 1200W total per 2U chassis.
– Operating Temperature Range: 0°C to 45°C (derated above 35°C).
– Storage Temperature: -40°C to +70°C.
– Relative Humidity: 5% to 85% (non-condensing).
– Altitude: 0 to 3,050 meters (10,000 feet).

REGULATORY COMPLIANCE

– Safety: IEC/EN 62368-1, UL 60950-1 (CB Scheme).
– EMC: FCC Part 15 Class A, EN 55032 Class A, EN 55035.
– Environmental: RoHS 3 (2015/863/EU), REACH, WEEE.
– Thermal Compliance: GR-63-CORE (NEBS Level 3) for airflow direction and thermal stability.
– Airflow Certification: Verified by TÜV Rheinland per ETSI EN 300 019-1-3 (Class 3.1).