Gemini Express Twinax Star Hub Technical Specification
The Gemini Express Twinax Star Hub from NLynx Technologies is the industry standard in providing compatibility for all IBM Twinax wiring modes, including the 2 Mbps Express mode.  The Gemini Star Hub enables traditional IBM 5250 compatibles to connect to iSeries, AS/400 and S/3x servers via inexpensive UTP (Unshielded Twisted Pair) wiring, thereby eliminating the need for expensive, proprietary twinaxial cabling. The Gemini Star Hub also enhances performance and reliability by providing the iSeries & AS/400 devices with a clean, noise-free filtered signal.  The Gemini Star Hub simply converts an IBM network cabling scheme from a twinaxial “daisy-chain” topology to a flexible standards-based UTP “star” topology. The Gemini Express Star Hub fully supports the 2Mbps line speed and throughput performance increases (up to 4 times faster!) available on the latest IBM iSeries and AS/400e products. The use of the Gemini Express Hub ensures protection against immediate and future performance bottlenecks caused by standard single-speed hubs in the AS/400 & iSeries physical-wiring infrastructure. The Gemini Express Star Hub transparently supports all new features and performance gains available on the new IBM iSeries and AS/400e Advanced Series Servers, as well as the 5250 Express Emulation adapters, such as TCP/IP over 5250. The Gemini Express Star Hub has 2 Host Ports supporting 14 Device Ports with R-J11, RJ12 or RJ-45 connectors. Other features include User-Configurable UTP Pin Assignments, and a Field Replaceable wide-ranging power supply. A full range of Baluns (Twinax to UTP Cabling Converters) is also available from NLynx Technologies. These self-terminating Baluns deliver unbeatable performance by providing exact impedance matching and advanced noise filtering, see separate datasheet for more details.		Physical·         Host Ports: 2·         Device Ports: 14·         Data Rate: ALL IBM 5250 protocol rates·         Nominal input impedance: 100 ohms·         Interface: RJ11, RJ12 or RJ45·         Active Pair: Configurable (default; 4 & 5) Features·         Automatic Data Rate detection·         Advanced Noise Filtering and Suppression on all Ports and Power Line Filtration·         Impedance Matching on all Ports·         Complete protocol transparency·         Compatible with IBM standard and EXPRESS data rates.  Distances ·         Controller to Gemini Hub: Up to 2000 ft.·         Gemini Hub to Device: Up to 2200 ft. Diagnostic LED’s·         Power, host / device port activity & mode. Power·         100-240 VAC to +5VDC auto-sensing wide-ranging replaceable external power supply  Temperature ·         Operating: 0 to 40 C·         Storage: 0 to 85 C·         Humidity: 95% non-condensing·         Dimensions: 19" X 8.75" X 1.75" (1U) Warranty: Three years  Ordering Information Part No.             Description 301-2305-02     Gemini 2 Port Express Star with                           RJ45 ports301-2315-01     Advanced Filtering RJ45 Balun,                           Pins 4 (Tip) & 5 (Ring)301-2305-021   Bundle, Gemini Express Star and                           16 baluns