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Line Interface Modules
Hardware Settings
Figure 5-13
Link Type Jumper Settings
Each link on the E1-2CS or E1-4CS LIM has a group of jumpers that must be set to 75 ohms
unbalanced or 120 ohms balanced operation. The jumpers are located near their associated link
connector
(Figure
row of pins (75 ohms unbalanced) or the lower row (120 ohms balanced)
TX-RX Shield Jumper Setting
On the E1 LIMs, you must ensure TX and RX jumpers are positioned properly in order to connect
TX and RX shields to chassis ground. These jumpers are located towards the center of the LIM, as
shown in
Figure
are the TX setting for each Link; the right-most set of pins are the RX setting for each Link.
•
With the jumpers set as shown in
12 and 10, respectively) are connected to chassis ground.
•
Setting the jumpers to the left and right outermost positions isolates the transmit and receive
shields, respectively, from chassis ground.
Table 5-7
E1-2CS and E1-4CS LIM Pinouts
Pin Number
1
3
9
11
10
12
5-20
not used
75 Ohm
120 Ohm
E1-2CS and E1-4CS LIM Jumper Positions
5-13). The two jumpers for each channel must be positioned in either the middle
5-13. There are four rows of six pins, one row for each Link. The left-most set pins
Figure
Signal Designation
Receive signal
Transmit signal
Receive return
Transmit return
Receive shield
Transmit shield
Xedge 6000 Hardware
Installation & Setup Guide
E1-2CS and E1-4CS LIM Overview
Link 0
Link 1
TX
RX
Link 0
Link 1
Link 2
Link 3
Link 2 and Link 3
are only on the
E1-4CS LIMs.
Link 2
Link 3
5-13, the TX and RX shields for each Link (DB15 pins
032R440-000
Issue 17
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