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Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel
78-15140-01
Install the E1-75/120 Conversion Panel
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Connectors:
1.0/2.3 miniature coax connectors on 75-ohm side
Molex 96-pin LFH connectors on 120-ohm side (21 inputs and 21 outputs per connector)
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Impedance tolerance: +/− 5%
Note See the cable loss specification of the E1-42 card for valid cable lengths. The E1-75/120 as a passive
device cannot amplify any singal and so cannot increase the possible cable length.
• Environmental
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Operating temperature: –5 to +45 degrees Celsius (+23 to +113 degrees Fahrenheit)
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Operating humidity: 5 to 95%, noncondensing
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Power consumption: Not applicable; the E1-75/120 is a passive device.
• Dimensions
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Height: 75 mm (2.95 in.)
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Width: 535 mm (21.06 in.)
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Depth: 221 mm (8.7 in.)
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Weight: 2.15 kg (4.74 lb)
• Compliance
ONS 15454 SDH cards, when installed in a system, comply with these standards:
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Safety: IEC 60950, EN 60950, UL 60950, CSA C22.2 No. 60950, TS 001, AS/NZS 3260
Install the E1-75/120 Conversion Panel
This section explains how to install the E1-75/120 conversion panel. You need an E1-75/120 conversion
panel if you want to convert the balanced 120-ohm interfaces of the E1-42 card and the corresponding
FMECs to unbalanced 75-ohm interfaces.
Note For more information about the E1-75/120 conversion panel, refer to the Cisco ONS 15454 Reference
Manual.
Step 1 Lift the E1-75/120 conversion panel to the desired rack position.
Figure 4 shows the rack-mounting for the E1-75/120 conversion panel.
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