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6 MECHANIC DESIGN
The Black Box devices have three mechanic designs:
1. Sub-Rack is a unit to be mounted in 19’’ chassis (MDS920AE-RMDC);
2. Mini-Rack is a unit of 1U height (44.5 mm) to be mounted in 19’’ rack or a cabinet;
3. Stand Alone is a compact unit to be mounted on the tabletop/desktop or another horizontal
surface.
Sub-Rack
From the constructive point of view, MDS92xxx-10BT, NG consists of two printed circuit boards
(PCBs) and a front panel.
Fig. 16 shows the front panel.
The front panel has the following sockets and LEDs:
LED Description
Alarm Alarm LED
Sync xDSL line status LED
Link User’s Ethernet interface status LED
Act Transmission status LED over user interface
xDSL RJ11 socket to connect DSL lines
10BaseT four RJ45 sockets to connect Ethernet network
1, 2, 3, 4 Hub port activation LED
Col Collision LED in Ethernet interface
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