OMS 3250

OMS3250Product Descriptionfor the rack. The two front vertical support bear 82 square holes(6.5 mm, spaced 25), for fixing the equipment subracks. All foursupports also bear holes (4 mm) for fixing last item belowTwo side panels and onerear panel:Two fibre ducts:Rack alarm unitPower Distribution Panel(optionally):they are bolted togetherthese are 150mm wide and are bolted on to either side of the rackto house the optical fibreit is assembled in a compartment at the front of the top element.The unit provides visual rack alarms and rack alarm retransmissioncapabilities (by means of ground-contacts)it can be fixed in the rack to provide termination and distribution ofseparate power supply courses for each equipment in the rack.At the top of the right vertical support is located the rack ground lug. All the four verticalsupports, the base element and the top element are electrically connected to ensure groundcontinuity.It is possible to locate the racks either back-to-back (double row), back to wall or side by side(single row).11.5 ConnectorsAll interface connectors are available from the front of the equipment.11.5.1 Optical Traffic ConnectorsThe optical standard connectors are:• LC type for STM-1,Gigabit Ethernet and all the SFP modules;• SC type for non-SFP STM-4/16/64 and OTNm.n.The optical cables are routed directly to the front of the optical units, where the opticalconnectors are located.11.5.2 Electrical Traffic ConnectorsThe standard electrical interfaces are available with the following range of connectors:• 1.0/2.3 mm 75 ohm (for 155 Mbit/s interfaces)• Sub-D connector for 120 ohm 2Mbit/s interfaces.• RJ-45 for GbE and FE interfaces.Issue 1 Copyright – Refer to Page 2 Page 57 of 74