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Table Of Contents
Mechanics and Other Characteristics
7.1.4 System Controller Module, SYSCONT-SD128-RJ45
7.1.5 Alarm and Fan module, FAN-ALARM
Mechanics and Other Characteristics
This chapter describes ONS 15305 Mechanical Parameters, Reliability-MTBF, Environmental Conditions and Referenced Specifications.
7.1 Mechanical Parameters
This section describes ONS 15305 Mechanical Parameters.
7.1.1 Chassis
The equipment is provided as a sub-rack suitable for mounting within a 19-inch equipment cabinet. The height of the unit is 43.6 mm (1U =44.45mm).
It is possible to mount one single unit including power supply, cable terminating and fibre handling facilities, within an enclosure with external dimensions less than described in Table 7-1.
The depth of the sub-rack is 240 mm. The total weight of the ONS 15305 fully equipped does not exceed 5Kg. Different mounting brackets are available for both 19" and ETSI cabinets/racks (as specified in ETS 300 119, IEC 60917 and IEC 60297). The thermal design of the unit meets the requirements of EN/IEC 60950.
7.1.2 Service Modules
The service modules in the ONS 15305 have physical dimensions as described in Table 7-2.
7.1.3 Power Module, DC Power
The ONS 15305 DC Power Module physical dimensions are described in Table 7-3.
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7.1.4 System Controller Module, SYSCONT-SD128-RJ45
The ONS 15305 System Controller module physical dimensions are described in Table 7-4.
7.1.5 Alarm and Fan module, FAN-ALARM
The ONS 15305 Alarm and Fan module physical dimensions are described in Table 7-5.
7.2 Reliability, MTBF
MTBF values according to:
Telcordia Technologies Special Report, SR-332, Issue 1, May 2001, but with the following correction:
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Based on experience, for all Telcordia standard values, a Correction Factor, CF=2 has been used to improve the reliability figures.
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ONS 15305 MTBF values are described in Table 7-6.
7.3 Environmental Conditions
The equipment conforms to the requirement of EN 300 386 for EMC related specifications. The equipment is also compliant with the following standards:
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The equipment operates under all environmental conditions detailed in ETS 300 019-2-3 Class 3.2.
7.3.1 Health and Safety
The equipment meets the requirements in EN/IEC 60950 (CLASS III) and EN60825. The equipment meets the requirements in ETS 300 753 for acoustic noise.
7.3.2 Storage and Transport
The equipment meets the requirements in ETS 300 019, Class 1.2 and class 2.2. Supported storage temperature range: -40OC to +70OC.
7.4 Referenced Specifications
This section lists referenced ITU-T, Cenelec, ETSI, IEC and Bellcore Documents.
7.4.1 ITU-T Recommendations
G.652
Single Mode Optical Fibre
G.701
Vocabulary of Transmission and Multiplexing, and Pulse Code Modulation (PCM) Terms.
G.702
Digital Hierarchy Bit Rates
G.703
Physical/Electrical Characteristics of Hierarchical Digital Interfaces
G.704
Synchronous Frame Structures at Primary and Secondary Hierarchical levels.
G.706
Frame Alignment and Cyclic Redundancy Check (CRC) Procedures Relating to Basic Frame Structures Defined in Recommendation G.704
G.707
Network node interface for the synchronous digital hierarchy (SDH)
G.783
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
G.784
Synchronous digital hierarchy (SDH) management
G.810
Definition and terminology for synchronization networks
G.811
Timing characteristic of primary reference clocks
G.812
Timing characteristics of slave clocks suitable for use as a node clocks in synchronization networks
G.813
Timing characteristics of SDH equipment slave clocks (SEC)
G.823
The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy
G.825
The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)
G.826
End-to-end error performance parameters and objectives for international, constant bit rate digital paths and connections.
G.832
Transport of SDH elements on PDH networks - Frame and multiplexing structures
G.841
Types and characteristics of SDH network protection architectures
G.957
Optical interfaces for equipment and systems relating to the synchronous digital hierarchy
G.958
Digital line systems based on the synchronous digital hierarchy for use on optical fibre cables
X.150
Principles of maintenance Testing for Public Data Network using Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) test Loops
7.4.2 Cenelec Documents
EN 55022
Specification for Limits and methods of Measurement of Radio Interference Characteristics of Information Technology Equipment
EN 55024
Electromagnetic Compatibility Requirements for Information Technology Equipment (Previously EN 55101)
EN 60825
Radiation Safety of Laser Products
EN 60950
Safety of Information Technology Equipment Including Electrical Business Equipment
EN 61000-3-2
Electromagnetic compatibility (EMC). Part 3: Limits; Section 2: Limits for harmonic current emissions (equipment input current Ј16 A per phase)
EN 61000-3-3
Electromagnetic compatibility (EMC). Part 3: Limits; Section 3: Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current Ј16 A
EN 61000-4-2
Electromagnetic compatibility (EMC). Part 4: Testing and measurement techniques; Section 2: Electrostatic discharge immunity test. Basic EMC Publication
EN 61000-4-3
Electromagnetic compatibility (EMC). Part 4: Testing and measurement techniques; Section 3: Radiated, radio-frequency, electromagnetic field immunity test
EN 61000-4-4
Electromagnetic compatibility (EMC). Part 4: Testing and measurement techniques; Section 4: Electrical fast transient/burst immunity test. Basic EMC Publication
EN 61000-4-5
Electromagnetic compatibility (EMC). Part 4: Testing and measurement techniques; Section 5: Surge immunity test
EN 61000-4-6
Electromagnetic compatibility (EMC). Part 4: Testing and measurement techniques; Section 6: Conducted disturbances induced by radio-frequency fields
7.4.3 ETSI Documents
ETS 300 011
Integrated Services Digital Network (ISDN); Primary rate user-network interface; Layer 1 specification and test principles
ETS 300 019-2-1
Environmental engineering (EE); Environmental conditions and environmental tests for telecommunication equipment Part 2-1: Specification of environmental test; Storage
ETS 300 019-2-2
Environmental engineering (EE); Environmental conditions and environmental tests for telecommunication equipment Part 2-2: Specification of environmental test; Transportation
ETS 300 019-2-3
Environmental engineering (EE); Environmental conditions and environmental tests for telecommunication equipment Part 2-2: Specification of environmental test; Stationary use at weather protected locations
ETS 300 119-4
Equipment engineering (EE): European telecommunication standard for equipment practice Part 4: Engineering requirements for subracks in miscellaneous racks and cabinets
ETS 300 147
Transmission and multiplexing (TM); Synchronous digital hierarchy (SDH); Multiplexing structure
ETS 300 233
Integrated Services Digital Network (ISDN); Access digital section for ISDN primary rate
ETS 300 253
Environmental engineering (EE): Earthing and bonding configuration inside telecommunication centres
ETS 300 386
Electromagnetic compatibility and radio spectrum matters (ERM); Telecommunication network equipment; Electromagnetic compatibility (EMC) requirements
ETS 300 417Transmission and Multiplexing (TM); Generic functional requirements for Synchronous Digital Hierarchy (SDH) transmission equipment.Compliant to ETS 300 417 for relevant parts (i.e the functionality implemented can be considered as compliant).
ETS 300 752Equipment engineering (EE): Acoustic noise emitted by telecommunication equipment
7.4.4 IEC Documents
IEC 60917-2Modular order for the development of Mechanical structures for electronic equipment practice
IEC 60297-3Dimension of mechanical structures of the 482.6mm (19 in) series Part 3 Subracks and associated plug-in units
7.4.5 Bellcore Documents
SR-332Reliability prediction procedure for electronic equipment
Posted: Fri Sep 14 10:44:33 PDT 2007
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