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HP Netelligent 2008 User Manual Page 33

Hp netelligent 2008: user guide.
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Repeater 1
Repeater 2
Figure 3-7. Connecting Repeaters via Repeater Expansion Ports
NOTE: When you add a repeater to a stack, connect the cable to the repeater you
add before you connect it to the repeater in the existing stack. For example, if you
add a repeater to the top of a stack, connect the cable to the IN port of the added
repeater. Then connect the other end of the cable to the OUT port of the existing
repeater in the stack. Do not leave cables connected at only one end. Doing so
reduces performance. The pin-outs of the IN and OUT ports are shown below.
10B2_DATA
10B2_GND
SHARE_GND
SHARE+12
SHARE_GND
16
UP LINK
COM PORT
MDI MDI-X
16
UP LINK
COM PORT
MDI MDI-X
Symbol
Pin No.
1
2
RXDB+
3
4
XDOWN
5
RXDB
6
7
8
EXPANSION
(Standard Cat 3 or Higher UTP/STP)
IN
OUT
EXPANSION
IN
OUT
Table 3-1
IN Port Pinouts
Function
In/Out
10B2 Ethernet bus data
In/Out
10B2 Ethernet bus ground
In/Out
Serial data negative lower repeater
Gnd
Shared ground
In
External bottom status indicator
In/Out
Serial data positive lower repeater
Pwr
Shared +12V
Gnd
Shared gnd
Netelligent 2008/2016 10Base-T Repeater User Guide
Repeater Expansion Cable
Description
3-7

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