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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 1 Hardware Installation
EIA Installation
To install coaxial cable with High-Density BNC connectors, see the “High-Density BNC Connector
Installation” section on page 1-37.
Figure 1-13 A High-Density BNC backplane for use in 1:N protection schemes
The EIA side marked “A” hosts 48 pairs of BNC connectors. Each column of connector pairs is
numbered and corresponds to the slot of the same number. The first column (12 pairs) of BNC connectors
corresponds to Slot 1 on the shelf assembly, the second column to Slot 2, the third column to Slot 4, and
the fourth column to Slot 5. The rows of connectors correspond to Ports 1 – 12 of a 12-port card.
The EIA side marked “B” provides an additional 48 pairs of BNC connectors. The first column (12 pairs)
of BNC connectors corresponds to Slot 13 on the shelf assembly, the second column to Slot 14, the third
column to Slot 16, and the fourth column to Slot 17. The rows of connectors correspond to Ports 1 – 12
of a 12-port card. The BNC connector pairs are marked “Tx” and “Rx” to indicate transmit and receive
cables for each port. The High-Density BNC EIA supports both 1:1 and 1:N protection across all slots.
1.6.3 SMB EIA
The ONS 15454 SMB EIA supports AMP 415484-1 75 Ohm 4 leg connectors. You can use SMB EIAs
with DS-1, DS-3 (including the DS3XM-6), and EC-1 cards. If you use DS-1 cards, use the DS-1
electrical interface adapter to terminate the twisted pair DS-1 cable from the backplane.
Figure 1-14 shows the ONS 15454 with pre-installed SMB EIAs and the sheet metal cover and screw
locations for the EIA.
To install SMB connectors, see the “SMB Connector Installation” section on page 1-38.
BA
BNC backplane
connectors
39141
1111
3333
4444
5555
6666
7777
8888
9999
10 10 10 10
11 11 11 11
12 12 12 12
2222
TX RX TX RX TX RX TX RX
TX RX TX RX TX RX TX RX
1111
3333
4444
5555
6666
7777
8888
9999
10 10 10 10
11 11 11 11
12 12 12 12
2222
TX RX TX RX TX RX TX RX
TX RX TX RX TX RX TX RX
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