3-30
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
FMEC-E3/DS3 Card
Figure 3-18 FMEC-E3/DS3 faceplate
You can install the FMEC-E3/DS3 card in any EFCA (Electrical Facility Connector Assembly) slot from
Slot 18 to 22 or Slot 25 to 29 on the ONS 15454 SDH. Each FMEC-E3/DS3 card interface features
E3-level or DS3-level inputs and outputs supporting cable losses of up to 12 dB at 17184 kHz for E3
signals, up to 137 m (450 ft) 734A, RG59, 728A per 24 m (79 ft) RG179 for DS3 signals.
Figure 3-19 FMEC-E3/DS3 block diagram
3.13.1 FMEC-E3/DS3 Card Specifications
• FMEC-E3/DS3 Input (for E3 signals)
–
Bit Rate: 34.368 MBits/s (Mbps) + 20 ppm
–
Line Code: HDB-3
–
Termination: Unbalanced coaxial cable
–
Input Impedance: 75 Ω + 5%
–
Cable Loss: up to 12 dB at 17184 kHz
• FMEC-E3/DS3 Output (for E3 signals)
–
Bit Rate: 34.368 MBits/s (Mbps) + 20 ppm
61320
FMEC
E3/DS3
1
2
3
4
5
6
7
8
9
10
11
12
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Inventory Data
(EEPROM)
61328
12 Input
Coaxial
Connectors
12 Output
Coaxial
Connectors
B
a
c
k
p
l
a
n
e
12
Pairs of
Trans-
formers
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