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BS EN 61280-2-1:2010

BS EN 61280-2-1:2010

$102.76

Fibre optic communication subsystem test procedures – Digital systems. Receiver sensitivity and overload measurement

Published By Publication Date Number of Pages
BSI 2010 18
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This part of IEC 61280 describes the test procedures applicable to digital fibre optic communication and data systems.

The object of this test procedure is to measure the minimum and maximum optical powers required and allowed at the optical input port of a fibre optic system to ensure its operation within specified limits. Another objective is to verify that the guaranteed error performance is obtained at the minimum and the maximum optical input powers specified by the terminal equipment manufacturer.

Figure 1 shows the typical elements associated with optical fibre systems. Optical amplifiers or regenerators may be used in long haul telecom systems, but are not usually associated with data transport systems such as Ethernet, etc. In bi-directional systems the transmitter and corresponding receiver are usually co-located, as indicated by the dotted lines. This specification is concerned with the characteristics of the optical input interface of the receiver, amplifier or regenerator shown.

It should be noted that the performance of fibre optic receivers may differ for different signal formats. It is therefore necessary to use the signal format that represents actual operating conditions.

PDF Catalog

PDF Pages PDF Title
5 CONTENTS
6 1 Scope and object
2 Terms and definitions
Figure 1 – Optical fibre system
7 3 Apparatus
3.1 General
3.2 BER test set
8 3.3 Optical power meter
3.4 Variable optical attenuator
3.5 Optical splitter
3.6 Test cords
3.7 Optical transmit interface
9 4 Equipment under test (EUT)
5 Test procedure
5.1 Operating conditions and test environment
5.2 Connector end-face cleaning
5.3 Measurement of input sensitivity
10 Figure 2 – Setup for the measurement of input sensitivity of a receive terminal
Figure 3 – Setup for the measurement of input sensitivity of an amplifier or regenerator
11 Table 1 – Minimum monitoring time
12 5.4 Measurement of overload level
Figure 4 – Setup for the measurement of overload level for a receive terminal
13 Figure 5 – Setup for the measurement of overload level for an amplifier or regenerator
14 6 Measurement uncertainties
7 Test results
7.1 Required information
7.2 Available information
15 Bibliography

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BS EN 61280-2-1:2010
$102.76