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3-3
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 3 Electrical Cards
3.1.1 Card Summary
FMEC E1-120PROA Provides electrical connection into the
system for 42 pairs of 120-ohm balanced
E-1 ports from the E1-42 card. It is for
1:3 protection from the A side (left side
of the shelf). It occupies four slots,
Slots 18 to 21. It uses Molex 96-pin LFH
connectors.
See the “3.11 FMEC
E1-120PROA Card” section
on page 3-21.
FMEC E1-120PROB Provides electrical connection into the
system for 42 pairs of 120-ohm balanced
E-1 ports from the E1-42 card. It is for
1:3 protection from the B side (right side
of the shelf). It occupies four slots,
Slots 26 to 29. It uses Molex 96-pin LFH
connectors.
See the “3.12 FMEC
E1-120PROB Card” section
on page 3-23.
E1-75/120 Installed in the rack to provide a
balanced 120-ohm connection for 42 E-1
interfaces that have a 75-ohm
unbalanced connection. It uses Molex
96-pin LFH connectors and
1.0/2.3 miniature coax connectors.
See the “3.13 E1-75/120
Impedance Conversion Panel”
section on page 3-26.
FMEC-E3/DS3 Provides electrical connection into the
system for 12 pairs of 75-ohm 1.0/2.3
miniature coax connectors for
unbalanced E-3 or DS-3 ports.
See the “3.14 FMEC-E3/DS3
Card” section on page 3-28.
FMEC STM1E 1:1 Provides electrical connection into the
system for 2 x 12 pairs of 75-ohm 1.0/2.3
miniature coax connectors for
unbalanced electrical STM-1 ports from
two STM1E-12 cards in case of 1:1
protected operation. The FMEC STM1E
1:1 card is two slots wide and is
recognized in Slots 18–19, 20–21,
26–27, and 28–29.
See the “3.15 FMEC STM1E
1:1 Card” section on
page 3-29.
FMEC-BLANK Assures fulfillment of EMC
requirements in case of empty FMEC
slots.
See the “3.16 FMEC-BLANK
Card” section on page 3-29.
MIC-A/P Provides connection for one of the two
redundant inputs of system power and
system connection for input and output
alarms.
See the “3.17 MIC-A/P
FMEC” section on page 3-30.
MIC-C/T/P Provides connection for one of the two
redundant inputs of system power and
system connection for LAN ports and
system timing input/output.
See the “3.18 MIC-C/T/P
FMEC” section on page 3-33.
Table 3-1 Electrical Cards (continued)
Card Description For Additional Information...