Datasheet

3-29
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 3 Electrical Cards
3.15 FMEC STM1E 1:1 Card
• DS3 signals. One of the following:
– Up to 137 m (450 ft) 734A, RG59, or 728A
– Up to 24 m (79 ft) RG179
3.15 FMEC STM1E 1:1 Card
Note For FMEC STM1E 1:1 specifications, see the “A.5.14 FMEC STM1E 1:1 Specifications” section on
page A-25.
The ONS 15454 SDH FMEC STM1E 1:1 card provides front mount electrical connection for 2 x 12
ITU-compliant, G.703 STM1E ports. With the FMEC STM1E 1:1 card, each interface of an STM1E-12
card operates at 155.52 mbps for STM-1 over a 75-ohm unbalanced coaxial 1.0/2.3 miniature coax
connector. The FMEC STM1E 1:1 card is required if you want to use the STM1E-12 card in 1:1
protection mode or for connection to two unprotected STM1E-12 cards.
Figure 3-16 shows the FMEC STM1E 1:1 faceplate and block diagram.
Figure 3-16 FMEC STM1E 1:1 Faceplate and Block Diagram
You can install the FMEC STM1E 1:1 card in any EFCA slot pair (18/19, 20/21, 26/27, or 28/29) on the
ONS 15454 SDH. Each FMEC STM1E 1:1 card interface features STM1-level inputs and outputs
supporting cable losses of up to 12.7 dB at 78 MHz.
3.16 BLANK-FMEC Faceplate
Note For BLANK-FMEC specifications, see the “A.5.15 BLANK-FMEC Specifications” section on
page A-26.
CLEI CODE BARCODE
Rx Tx
1
2
Rx
Tx
3
4
Rx
Tx
5
6
Rx
Tx
7
8
Rx
Tx
9
10
Rx
Tx
11
12
Rx
Tx
1
2
Rx
Tx
3
4
Rx
Tx
5
6
Rx
Tx
7
8
Rx
Tx
9
10
Rx
Tx
11
12
FMEC STM1E 1:1
Inventory Data
(EEPROM)
110952
2 x 12 Input
Coaxial
Connectors
2 x 12 Output
Coaxial
Connectors
B
a
c
k
p
l
a
n
e
2 x 12
Pairs of
Trans-
formers
Protect
Switch
Relay
Matrix