Rc802/804-240b 8e1 modular fiber-optic multiplexer (rev. M) user manual raisecom technology co., ltd. (04/2005).
Raisecom technology co., ltd 1 1. Cautions please read the following notices carefully before installing and using the device, raisecom does not respond to any loss that caused by violating safety notice. This series fiber-optic multiplexer is integrated device that has precise elements, please avoi...
Raisecom technology co., ltd 2 contents 1. Cautions ...........................................................................................................................................1 2. Overview ..................................................................................................
Raisecom technology co., ltd 3 2. Overview 2.1. Introduction rc800-240b series fiber-optic multiplexers are ideal fiber-optic transmission devices for point-to-point networks, medium-sized and small capacity networks, such as wireless communication base stations, private communication networks, and ...
Raisecom technology co., ltd 4 (dsc), 0-25 km rc801-240b-s2 remote-site standalone, max 8 e1, 2 expansion slots, 1 optical port, dual-strand single mode (dsc), 10-60 km rc801-240b-s3 remote-site standalone, max 8 e1, 2 expansion slots, 1 optical port, dual-strand single mode (dsc), 15-120 km rc803-2...
Raisecom technology co., ltd 5 3. Parameters 3.1. E1 interface specification bit rate: 2048kbps±50ppm line code: hdb3 impedance of interface: 75Ω (unbalanced) or 120Ω (balanced) electrical characteristics: complies with itu-t g.703 transfer characteristics: complies with itu-t g.823, g.724 input jit...
Raisecom technology co., ltd 6 4. How to use 4.1. Introduction of the front panel the front panel includes the indications of e1 receiving signal loss alarms and optical alarms. All the alarms are for the receiving link (signal input). The line l indicates the alarms generated at the local site and ...
Raisecom technology co., ltd 7 1 2 3 4 5 6 off on sent through the optical link, so that they are accurate only when the optical receiving is working in good condition. 4.2. Dip-switches configuration 4.2.1. Dip-switches for e1 interface impedance there are 8 groups of 4-bit dip-switches, sw1 to sw8...
Raisecom technology co., ltd 8 • 5 th bit: loop-back type options this switch is used to choose “remote loop-back” or “local loop-back” when performing the e1 loop-back operations. 5 th bit loop-back type option off remote loop-back enable on local loop-back enable figure2: sketch map of setting rem...
Raisecom technology co., ltd 9 5. Installation and test 5.1. Inspect after opening please first check if the models and part numbers are in consistence, and also check if the equipments are damaged. 5.2. Preparation before installation z carefully read this manual z prepare all kinds of the cable. E...
Raisecom technology co., ltd 10 if using 120 ohm balanced interface, users can connect the db37 male interface with db37 female-connector twisted-pair. Z optical interface plug the sc fiber tail into optical interface (push hard until to the deep end). If not sure about transmission direction, it’s ...
Raisecom technology co., ltd 11 z los red indicator of e1 sub-channel is on answer: loss alarm of rx signal at e1 sub-channel, no hdb3 signal is received. Check whether all e1 ports are connected well, or whether 75Ω cables are reversely connected, or whether the wires of 120Ω cables are in correct ...
Raisecom technology co., ltd 12 6. Appendix a introduction of cable making a.1 e1 cable • 75 ohm signal adopts db37 coaxial adapter: syv 75-2-2 coax cable, the distance shall not be longer than 200m. First pick out the cc3-k3 connector from the accessories, and release the tail protecting jack. Seco...
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