Omnitron Systems Technology, Inc.
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FlexCenter 10B2 Coax Module:
Termination Switch
Position
Description
Left
Termination In; use when at the end of a coax line (an external termina-
tor MUST NOT be connected.
Right
Termination Out; use when in any position except at the end of a coax
line.
LEDs Display
Function
Color/State
Description
Link
Green / ON
Operational device detected at the far end of
the UTP.
Rx
Green / Blink
Received data on UTP line.
Par
Red / ON
Port partitioned due to illegal behavior.
SITE PREPARATION
The following are minimal physical location preparations needed:
a. Power - A power outlet should be available within 5 feet of the unit.
b. Cabling - The following cabling should be used:
1.
10Base-T / UTP - Ideally the site should be cabled with category 5 wiring but a
category 3 or better is acceptable to maximize performance (100 ohms,
24 AWG solid copper).
2.
10Base-2 / coax - Use an RG-58A/U, RG58C/U, RG58U or equivalent
(50 ohms, BNC connector).
3.
10Base-FL / Fiber - Use 50/125, 62.5/125 or 100/140 micron multimode fiber
or 9/125 micron single-mode fiber.
UNPACKING
a. Visual Inspection - before unpacking, a visual inspection should be conducted in
order to detect any physical damage to the equipment. Any evidence of damage
should be noted and reported immediately.
b. Unpacking - place shipping container on a flat surface, cut straps or tape, open
top. Take out each item carefully and place securely on a clean flat surface. Re-
turn all packing material into container (foam, boxes etc.), close and store away
for future reuse.
c. Inspection - Inspect each item for any apparent damage. Any evidence of damage
should be noted and reported immediately.
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Omnitron Systems Technology, Inc.
Application 2. Midsize workgroup with fiber workstations
In this case two hubs are connected via uplink cables to a third hub. Six workstations
are connected via fiber to the hubs. The longest collision path is between two stations
connected to each of the lower hubs. In this case there are 4 segments, 3 repeaters
and 0 shared segments (4-3-0). Therefore, limiting the fiber runs to 400 m satisfies
the collision rule's requirements.
Application 3. Midsize workgroup with coax segments
In this case the FlexCenter provides the central connection point among the coax and
UTP segments. Note that the coax lines are terminated by the hub's coax modules. The
longest collision path is between any two stations: 2 segments, 1 repeater and 2 shared
segments (2-1-2); the collision criteria is met.
Application 4. Shared and dedicated coax backbones
In these two cases, three wiring closets are connected via a coax backbone. In the first
case, a coax is daisy-chained among the hubs. The maximum length of the coax
segment is 185 m (606 ft.) and the collision rule is met (3-2-1). In the second case, by
using two point to point coax segments the distance of each segment can reach 185 m
(606 ft.). The collision rule is met (4-3-2).
