Allied Telesis AT-MC102XLPCI - Manual (Page 22)

Chapter 1: Product Overview
22
Configuring
MissingLink &
Link Test
Features
The MissingLink & Link Test jumper (J5) on the AT-MC102XLPCI
assembly is configured at the factory with the MissingLink feature enabled.
By reconfiguring this jumper, the link Test function can be enabled (and
MissingLink disabled). The location of the jumper is shown in Figure 4.
Figure 4. PC Board Location of Jumper J5
The MissingLink & Link Test configuration and jumper (J5) pin positions
are given in Table 3.
Note
Although is not marked on J5, Pin 2 is positioned between pins 1
and 3.
Note
If you choose to remove the jumper, Allied Telesis recommends that
you re-install the jumper on the center pin (2) only, 90 degrees from
the pins 1 and 3 so that it does get lost.
Table 3. MissingLink & Link Test - Jumper J5 Positions
Pin Position of Jumper Feature Configuration
1 and 2
(Factory Default) MissingLink function enabled
Link Test disabled
2 and 3 MissingLink function disabled
Link Test enabled
No Jumper Installed MissingLink function enabled
Link Test disabled