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Method for testing frequency stabilization tester

A tester and frequency stability technology, applied in the field of frequency stability tester verification, can solve the problem of frequency stability tester

Inactive Publication Date: 2009-10-07
SHENYANG AIRCRAFT CORP
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Problems solved by technology

[0003] The current national metrological verification regulations for frequency standard comparators are "JJG545-2006 Frequency Standard Comparator Metrology Verification Regulations", which is mainly a verification method compiled for frequency standard comparators with multiplier output terminals. The input sensitivity, maximum relative frequency difference, comparison uncertainty and other technical indicators of the instrument must be measured with an oscilloscope and a counter; however, the XH3596 series frequency stability tester does not have an output terminal, so it cannot be measured with an oscilloscope and a counter according to regulations. Therefore, it is currently impossible to perform verification according to the methods provided by the current national metrological verification regulations
Verification method without homologous correlation comparison uncertainty in the current national metrological verification regulations

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  • Method for testing frequency stabilization tester

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Embodiment Construction

[0032] Measurement performance requirements of XH3596 series frequency stability tester:

[0033] 1), input sensitivity: (input sensitivity is defined as the minimum voltage value for the frequency stability tester to work normally):

[0034] Reference input sensitivity: 0.5Vrms

[0035] Tested input sensitivity: 0.4Vrms

[0036] 2), the maximum relative frequency difference: 1 × 10 -7

[0037] 3) The same-frequency correlation ratio is uncertain: σ y (τ)≤3×10 -12 / τ

[0038] τ is the sampling time

[0039] unit is s

[0040] 4), Uncertainty of homologous correlation comparison: σ y (τ)≤5×10 -12 / τ

[0041] τ is the sampling time

[0042] unit is s

[0043] 5), the equipment selected for verification:

[0044] A. Reference frequency standard

[0045] The output frequency is 1MHz, 5MHz, 10MHz

[0046] The frequency stability is less than or equal to 10 times the relative uncertainty of the tested frequency stability tester

[0047] Output amplitude≥0.5Vrms

[0...

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Abstract

A method for testing frequency stabilization tester is especially used for testing XH3596 series frequency stabilization testers belonging to frequency standard comparison instruments. The method is respectively used for testing tested input sensitivity, reference input sensitivity, maximum relative frequency difference, uncertainty of same-frequency correlative comparison and uncertainty of same-source correlative comparison of the frequency stabilization tester. The method comprises the following steps of: 1. checking appearance and normal work performance; 2. connecting equipments involving referential frequency scale and frequency synthesizer; and 3. testing the frequency stabilization tester. The method has the advantages of being capable of testing XH3596 series frequency stabilization testers belonging to frequency standard comparison instruments, accurately obtaining the input sensitivity, maximum relative frequency difference, uncertainty of same-frequency correlative comparison and uncertainty of same-source correlative comparison of the XH3596 series frequency stabilization testers, and having simple testing process.

Description

Technical field: [0001] The invention is a verification method for the XH3596 series frequency stability tester in the frequency standard comparator product. Background technique: [0002] The XH3596 series frequency stability tester is used in conjunction with the cesium atomic frequency standard or rubidium atomic frequency standard. It is an important supporting equipment used to establish the national defense primary and secondary frequency measurement standards. Measuring standard instruments, including the main standard and supporting equipment, must be subject to mandatory verification. XH3596 series frequency stability testers must be subject to metrological verification according to certain verification methods, and can only be put into use after passing the verification. [0003] The current national metrological verification regulations for frequency standard comparators are "JJG545-2006 Frequency Standard Comparator Metrology Verification Regulations", which is m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 陈艳红
Owner SHENYANG AIRCRAFT CORP
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