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JJF 1325-2011: Calibration Specification for Optical Return Loss Meters for Telecommunication
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJF 1325-2011	English	349	Add to Cart	3 days [Need to translate]	Calibration Specification for Optical Return Loss Meters for Telecommunication
JJF 1325-1990	English	239	Add to Cart	2 days [Need to translate]	O.T.N. of Primary Standard for Light Exposure

JJF 1325-2011: Calibration Specification for Optical Return Loss Meters for Telecommunication

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Optical Return Loss Meters for Telecommunication People's Republic of China National Metrology Technical Specifications Communication optical return loss specification Calibration Issued on. 2011-11-30 2012-03-01 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Communication optical return loss specification Calibration This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on November 30, 2011, and from From March 1, 2012 into effect. Focal point. the National Technical Committee on Optical metrology The main drafting units. China Institute of Metrology Zhejiang Institute of Metrology Participated in the drafting unit. China Electronics Technology Group Corporation No. 23 Research Institute This specification committee commissioned by the National Optical measurement technology is responsible for interpreting The main drafters of this specification. Li Jian (China Institute of Metrology) Mao Zhenhua (Zhejiang Institute of Metrology) Zhang Zhixin (China Institute of Metrology) Zhou Wen Qing (Zhejiang Institute of Metrology) Drafters participate. Chen Ting (Zhejiang Institute of Metrology) Wu Yongsheng (China Electronics Technology Group Corporation No. 23 Research Institute) Xu Nan (China Institute of Metrology)

table of Contents

1 Scope (1) 2. References (1) 3 Overview (1) 4 Metrological characteristics (1) 4.1 optical return loss measurement range (1) 4.2 optical return loss indication error (2) Calibration Condition 5 (2) 5.1 environmental conditions (2) 5.2 Calibration Equipment (2) 6 calibration items and calibration methods (3) 6.1 Calibration before the test (3) 6.2 Calibration preparation (3) 6.3 optical return loss measurement range of the calibration (4) 6.4 Optical Return Loss Indication Error Correction (4) 6.5 optical return loss measurement repeatability calibration (5) Calibration results for 7 (6) 8 recalibration intervals (6) Original record format in Appendix A (7) Appendix B Calibration Certificate page format (8) Appendix C communication optical return loss, return loss meter calibration parameters Uncertainty Evaluation Examples (9) Communication optical return loss specification Calibration

1 Scope

This standard applies to communication optical return loss meter (hereinafter referred to as optical return loss meter) return loss calibration parameters. Correct Optical return loss meter calibration power parameters can refer JJG965 "communication power meter" implementation. 2. References JJG965-2001 communicate with power meter When using this specification should be taken in the current valid version of the above referenced files.

3 Overview

Optical return loss meter is an important instrument for the optical communications industry and scientific research units, it is used to measure optical fiber communication devices Or link the reflected optical power measuring instruments. Optical return loss meter can measure the optical fiber, fiber optic connectors and other devices Return loss, but also measurable variable optical attenuator, spectrometer, and other instruments-port optical return loss. Optical return loss The main instrument shown in Figure 1, the test port output by the light source in a bunch of signal light, and detected by the test sample The optical signal reflected back to power values to calculate the return loss value of the measured sample. Of calculating the optical return loss Law. RL = -10lg (Pr/Pj) Where. Pj --- incident on the input optical power, mW; Pr --- return received optical power, mW from the same input termination. Figure 1 optical return loss meter schematic Currently optical return loss meter are mainly two. having a built-in light source type and no built-in type. It has a built-in light type The main advantage is the instrument to direct the optical return loss measurement; without built-in light source type of the main advantages is based on external Different light sources, select the appropriate test wavelength.

4 Metrological characteristics

4.1 optical return loss measurement range ...