Installation In Restricted Access Location (Ral) - Ericsson Marconi OMS 870 Quick Reference Manual

Marconi OMS 870 R3.0 Quick Reference Guide
Decide which side do you want to use as the front side (you can use
the side with the connectors or the Ericsson branded side as the
front side) depends on if you have back access
1. Remove the two phillips screws on the left and right and install
2. Follow step 2-6 in "Mount in a 19" rack" on page 1-9.
1.5.3

Installation in Restricted Access Location (RAL)

The OMS 870 can be installed in a restricted access location (RAL)
or outside of an RAL.
After installation in a RAL, such as in a telecommunication centre,
the OMS 870 must be properly installed in a rack with brackets or in
other ways properly connected to a safety ground.
The OMS 870 48V DC must not be powered from a source external
to the RAL. All communication interfaces used must be limited to
SELV. E1 interface used should be limited to SELV.
1.5.3.1 Installation outside a Restricted Access Location
After installation, the OMS 870 48V power and all communication
ports used must be connected to SELV circuits, for example a port
on a personal computer or 10/100 Mbit Ethernet hub/router or other
Information Technology (IT) equipment.
The 48V DC power must not exceed 60 VDC and must be powered
from an certified external power supply unit (PSU) or a battery unit
(no connection to -48 V telecom voltage).
The optical ports (if present) have no limitations regarding safety
recommendations.
1.5.3.2 Definitions
Restricted Access Location (RAL)
A location for equipment where both of the following paragraphs
apply:
•
1-10
the extension brackets with longer phillips screws that are also in
the plastic bag.
Access can only be gained by service persons or by users who
have been instructed about the reasons for the restrictions
1/1531-CRA 119 0513/30 Uen A 2007-11-15