Ericsson Radio Systems AB BKRC1311005-2 사용자 설명서
Ericsson Internal
DESCRIPTION
DESCRIPTION
23 ( 24 )
/ XSNJOER
174/1551-LZA 701 0001 Uen
EAB/ FJG/YP ( Louise Cederlund)
2007-06-12
A
Prepared (also subject responsible if other)
No.
Approved
Checked
Date
Rev
Reference
•
TMR 9202
10
Alarms
The RBS 2207 can be connected to a maximum of 16 external alarms. The DF
is used for external alarm connection. Each alarm connection is provided with
overvoltage protection. (One OVP module protects two alarm connections.)
The alarm device can set the alarm by either an open or closed circuit.
is used for external alarm connection. Each alarm connection is provided with
overvoltage protection. (One OVP module protects two alarm connections.)
The alarm device can set the alarm by either an open or closed circuit.
The alarm device connected to the screw terminals should be isolated relay
contacts. A closed contact (logic zero) is required to be below 2 k , and an
open contact (logic one) above 100 k . The current through a closed 0
contact is 1.2 mA. The voltage between terminals with an open contact is
24 V DC. The external alarms are defined during installation either using the
Operation and Maintenance Terminal (OMT) or from the BSC.
contacts. A closed contact (logic zero) is required to be below 2 k , and an
open contact (logic one) above 100 k . The current through a closed 0
contact is 1.2 mA. The voltage between terminals with an open contact is
24 V DC. The external alarms are defined during installation either using the
Operation and Maintenance Terminal (OMT) or from the BSC.
11
Standards, Regulations and Dependability
In this section a brief overview of standards, type approval, and electromagnetic
compatibility are stated.
compatibility are stated.
11.1
Safety Standards
In accordance with the market requirements, the RBS 2207 complies with the
following product safety standards:
following product safety standards:
•
73/23/EEC Low voltage directive
•
IP 20 according to IEC/EN 60529
•
Federal Communications Commission (FCC) rules, part 68
•
EN 60950 / IEC 60950
•
EN 60215 / IEC 60215
•
UL 1950 / CSA C22.2 No.950
11.2
Other Standards and Regulations
Marking
The product is marked with signs to show compliance with product safety
standards.
standards.