User`s manual

Ethernet Connections
Description
ETHERNET PORT
The DNH consists of two identical hub modules in one enclosure. The
left side is usually the DataNET ‘A’ Hub and the right side the DataNET
‘B’ Hub. Each hub contains a DataNET Hub board and power supply.
The DNH connects to the Ethernet local area network via the RJ-45 STP
connector located on DataNET Hub board. Each of the boards has an
Ethernet connection. However, only the DNH ‘A’ hub Ethernet port is
active.
HUB ‘B’’
HUB ‘A’
Figure 2-4.Dual Hubs
Active Ethernet Port
Only one Ethernet port is active in the DNH. The wiring connection
between the two halves determines which half has the active Ethernet
port. A jumper wire visible across pin 1 and pin 2 on the cable connector
indicates that the side to which it is connected is the active port, which
we designate the ‘A’ Hub. The hub that has the inactive Ethernet
connection is the ‘B’ hub.
Remember, only one Ethernet port can be active.
CONNECTING
CABLE
JUMPER
PINS 1&2
‘’A’ HUB
‘B’ HUB
44 • Installation 2000585-001