E1-75/120 Impedance Conversion Panel Description - Cisco ONS 15454 SDH E1-75 Installing

E1-75/120 Impedance Conversion Panel Description

E1-75/120 Impedance Conversion Panel Description
The ONS 15454 SDH E1-75/120 impedance conversion panel provides front mount electrical
connection for 42 ITU-compliant, G.703 E-1 ports. It contains 84 1.0/2.3 miniature coaxial connectors
(42 for transmit, 42 for receive) to the client side and two 96-pin Molex type connectors to the FMEC
120-ohm side. Each of the 96-pin Molex type connectors connects 21 inputs and 21 outputs.
Transformers in the E1-75/120 conversion panel improve decoupling from DC voltages and
overvoltages. The E1-75/120 conversion panel is intended to be used in DDFs (digital distribution
frames), ETSI racks, and ANSI racks. If you want to use the E1-75/120 conversion panel in a rack other
than ETSI, remove the ETSI rackmount brackets shipped with the E1-75/120 and use the optional
19-inch/23-inch mounting bracket.
With the E1-75/120 conversion panel, each E1-42 port operates at 2.048 Mbps over a 75-ohm unbalanced
coaxial 1.0/2.3 miniature coaxial connector.
Figure 1
Figure 2
Figure 2
Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel
2
E1-75/120 Conversion Panel Faceplate
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 22 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
shows the E1-75/120 with optional rackmount brackets installed.
E1-75/120 with Optional Rackmount Brackets
Figure 1 shows the E1-75/120 faceplate.
19 to 23 in.
rackmount
bracket
ETSI
rackmount
bracket
78-15140-01