TCR Token Ring Copper Repeater Module

Transcription

1 CR oken Ring Copper Repeater Module ublication Number: /91

2 RADring Modules - CR CR oken Ring Copper Repeater WR FL 4 16 CR Description he CR, oken Ring Copper Repeater Module, is used for extending the trunk distance between adjacent hubs over shielded or unshielded twisted pair. he CR meets all the applicable IEEE and IBM oken Ring requirements, and supports both 16 and 4 Mbps networks. he CR normally operates in pairs, with one unit placed at the (Ring Out) port to provide reclocking, reshaping and regeneration on the main ring data, and the other at the (Ring In) port to provide reclocking, reshaping and regeneration on the back-up ring data. he CR performs all the functions of a copper repeater, in addition to cable fault protection with network partitioning and jitter attenuation. It also supports monitoring and control by RADnet Network Management. he CR has user-selectable automatic cable break protection (C) with automatic loopback upon cable fault or disconnection. he module supports connection to or on the same module, and provides a DB-9 ring connector intended mainly for use with shielded twisted pair cables, such as IBM type 1, and one RJ-45 connector intended mainly for use with unshielded twisted pair ( cables, such as IBM ype 3). CR anel Indicator WR FL CR Front anel Indicators Function ower On (green). Lights when the CR module receives power. Module under network management control (green). Lights when loopback command is being forced by the management station. ON when cable fault condition exists (red). Lights when module configured as Ring In (green). Lights when module configured as Ring Out (green). 4 Lights when module selected to operate at 4 Mbps (green). 16 Lights when module selected to operate at 16 Mbps (green). RADring Installation and Operation Manual 1

3 RADring Modules - CR Electrical Active ath assive ath General pecifications ransmission Line 4-wire (2 twisted pairs) ransmission Range For IBM ype 1 cable For IBM ype 3 cable 750 m / 2500 feet at 4 Mbps 300 m / 1250 feet at 16 Mbps 350 m / 1100 feet at 4 Mbps 150 m / 550 feet at 16 Mbps Data Rate 4 or 16 Mbps, switch-selectable Data Format Balanced bipolar, Differential Manchester encoded Line Identification O,B lines for repeater G,R lines for repeater Output Level (nominal) 4 V ptp (on 150 ohms) Input Impedance 150 ±15 ohms () 100 ±10 ohms () Line Identification G,R lines for repeater O,B lines for repeater Insertion Loss (Maximum) 0.5 to4 MHz 4 to16 MHz 16 to32 MHz 0.35 db 0.7 db 1.3 db Crosstalk (Maximum) Active to assive ath 42 4 Mbps Mbps Fault olerance Automatic shorting of main to loopback path when power is off. When a cable fault condition exists, repeater output is looped back with signal regeneration. Environment emperature 0-40 C/ F Humidity p to 90%, non-condensing 2 RADring Installation and Operation Manual

4 RADring Modules - CR et-p CR modules occupy one slot of the RADring enclosure. Always install the CR modules serving one ring to the sides of the lobe access module cluster: CR to the left, CR to the right. he modules can be installed or removed while power is applied to the enclosure. 1. et the CR switches according to the table below for the required application. 2. lug the module into the designated enclosure slot, as marked on the site installation plan. Fasten module by means of one screw. Do not overtighten. 3. Refer to the site installation plan to identify the cables intended for connection to this module. 4. Connect the cables to the module connectors. 5. Check that on each CR module LEDs light according to the set-up. Note: Installation or removal of the CR during network operation may affect the configuration of the network. IN/O 4m RNG OFF ON C JA 16m A trap Identity IN/O CR trapping Diagram CR Jumper/witch ettings Function elects module to operate as either Ring In or Ring Out ossible ettings or C elects cable protection to ON/OFF ON or OFF ON ON - Controls the JA by the system OFF - Controlled by the switch positions ON or OFF JA Jitter attenuation ON or OFF ON or OFF ON 4M/16M Operation in 4 Mbps or 16 Mbps 4 Mbps or 16 Mbps RNG/A Module operating as or port, or as satellite port of the hub. (Note: atellite setting requires the unit to be set as with C ON) RNG or A Factory etting OFF 16 Mbps RNG RADring Installation and Operation Manual 3

5 RADring Modules - CR Applications CR() CR() CR CR CML/NM CH1 CH2 REE CR() CR A-8 CR-16 / Application -A CR() CR atellite Application 4 RADring Installation and Operation Manual