Cygnus Microsystems Pvt Ltd Cherlapalli, Hyderabad, Telangana

 Operates in pair on optical fiber link to transmit and receive DTE port data across the link. Driving range: Upto 15 km on single mode optical fiber or 2 km on multimode optical fiber Modular design allows unit to be ordered with anyone of several DTE interfaces with following functionality, as ordering time option.         • V.35 synchronous interface allows speeds from 64 kbps to 2 Mbps with nx64 kbps operation,(n=1 to 32).         • 2 Mbps G.703 E1 interface with HDB3 encoding and framed and unframed mode of operation.         • 4-port 10/100 Mbps Ethernet interface allow it to be used as a LAN Bridge over fiber link at nx64 kbps bandwidth, up to 2 Mbps.         • 64K Codirectional G.703 interface to transmit 64 Kbps user data with 4-wire COD interface.         • Async RS232 interface to be used to transport RS232 data over fiber by using nx64 kbps bandwidth, upto 2 Mbps.         • 2-wire analog modem DTE interface allows transporting full duplex voice band analogmodem signals over  Fiber.  Configuration/monitoring - ordering time options for:         • RS 232 compatible console port         • LCD-Keypad interface on front panel         • Via SNMP and Telnet over a TCP/IP network.         • Through switches and jumpers alone (Limited parameter configuration) Loop back and test pattern generation facilities for quick fault isolation. Front panel indicators for displaying unit status. Power supply - ordering time options for 230 VAC, 24VDC or 48 VDC

Fiber optic Modem with following options for DTE ports:         • 1, 2 or 4 G.703 (E1) ports which can be used for WAN uplinking or for connecting E1 user devices         • 1 or 2 64 kbps co-directional G.703 (COD) ports which can be used for WAN uplinking or for connecting COD user devices         • 1 or 2 Nx64 kbps V.35 DTE ports for connecting user devices         • 2 or 4 RS232 DTE ports for connecting user devices         • 10/100 Mbps Ethernet with 4-port Switch and Bridging functionality; can bridge across the fiber, or over G.703 channel across a WAN link for end-to-end bridging User data from V.35/RS232 ports can be directly transported over leased lines by interfacing paired unit through E1 or 64 kbps COD telecom interface Simultaneous transmission over fiber of Ethernet traffic and DTE port traffic  Ethernet throughput can be up to 40 Mbps across the fiber, or up to 2 Mbps over DTE channel.  Driving range: up to 20 km over single mode fiber  Option for backup fiber port for hot standby functionality   Unit management options:         • through RS 232 compatible console port         • through DIP switches         • through a separate 10/100 Base-T Ethernet port supporting SNMP and TELNET (optional)   Loopback and Test Pattern generation facility for quick fault isolation on fiber and DTE side   Front panel indicators for displaying unit status.   Ordering time option of resettable buzzer for alerting against fiber link failure.   Ordering time option for 230 VAC operation, 48 VDC operation, or both.   Ideal for datacom, SCADA and telecom applications, where reliability and error-free operation of optical fiber are the primary requirements. Allow applications to exploit the noise immunity, higher bandwidth and larger driving range of fiber, while retaining the flexibility of multiple choices for DTE interface, different ways of controlling and monitoring the unit, and various input power supply options.

 Extends ethernet LANs up to 10.5 km on standard 0.5 mm diameter telephone wiring.  Operates in pairs across 2-wire unloaded copper circuit.
 Avoids need for additional equipment at small sites :         •Built-in 4-port autosensing 10/100 Base-T ethernet switch.         •Built-in transparent bridging functionality.         •Support for VLANs (ordering time option)  Speed can be selected between 192 kbps and 2304 kbps to get rate-range benefit.  Offers trade off between speed and driving range - driving range varies from 5.5 km at 2304 kbps to 10.5 km at 192 kbps.
  Can be field configured to automatically adjust line speed based on line quality and line length.  Facility for testing line quality using PRBS pattern generation and checking.  Easily configurable using DIP switches provided on the unit. Also manageable:         •Via a terminal connected to dedicated RS 232 Console Port.         •Via SNMP from central NMS (Network Management Station) via

Allows RS232 ports to be extended from an upstream site to remote locations using one or more leased lines.  Automatically corrects any errors in user port data caused during transmission on the leased line.  Several cost-effective topologies possible. A single CYGNUS 711 unit at the upstream site can be shared by several remote sites.  Topologies providing alternate paths can be configured, to provide continued connectivity to remote sites even if a leased line fails. Ordering time option for 4, 8 or 16 RS232 Terminal Ports (for connecting user devices), and 2 or 4 V.35 Network Ports (for connecting to leased lines via external modems).  RS232 port speed from 1.2 kbps to 115.2 kbps. Leased line speed from 64 kbps to 2 Mbps.  Very robust RS232 ports with built-in 1500 V AC isolation, which reduces the chances of RS232 port failure even at sites with poor quality power supply, poor earthing, or high levels of electrical noise and surges.  Easy set up and installation. Standard topologies can be set just by setting DIP switches. Extensive set of status indicators., including Activity indicators for each Terminal Port and each Network Port.  Ideal for replacing older Multiplexers in Railway’s PRS/UTS network, and for extending Terminal Server ports from upstream sites to new booking offices for connecting Dumb Terminals there.

Robust solution for connecting asynchronous RS 232 devices in an error free manner over synchronous 64 kbps leased lines. Operates in pairs.
Converts between asynchronous RS232 and synchronous V.35 interfaces; provides automatic detection and correction of data transmission errors.
1500 VAC isolation protection on RS232 Ports.
Console port for configuration and diagnostics.
Status display indicators. 230 VAC operation. Use the CYGNUS 421 ECC (JTBS Linker) to achieve error-free communication between asynchronous RS232 devices over a 64 kbps leased line. The CYGNUS 421 operates in pairs across the leased line and connects to external 64 kbps modems through a synchronous V.35 interface. It supports up to two asynchronous RS232 user devices. Isolation protection of 1500 VAC is standard for these two RS 232 ports (although the product is optionally also available without this isolation protection). The unit operates from standard 230 VAC power supply and has a built-in SMPS to ensure reliability. Configuration and diagnostics can be carried out through a console port provided for the purpose.

Country of Origin : India

Condition : New

Warranty : 1yrs

Connectivity Type : Wired