GA/T 748-2008 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GA/T 748-2008	279	Add to Cart	3 days	General specification of projective comparator for forensic fingerprint indentification	Obsolete

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Basic data

Standard ID: GA/T 748-2008 (GA/T748-2008)
Description (Translated English): General specification of projective comparator for forensic fingerprint indentification
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 7,763
Date of Issue: 2008-01-22
Date of Implementation: 2008-05-01
Quoted Standard: GB 4706.43-2005; GA/T 144-1996
Regulation (derived from): On the abolition of 11 public security industry standard bulletin; on the abolition of 11 public safety industry standard bulletin
Issuing agency(ies): Ministry of Public Security
Summary: This standard specifies the technical requirements, test methods, inspection rules and marks, packaging, transportation and storage of Fingerprint Matching Meter. This standard applies to fingerprint identification in the reflection type of fingerprint projection than the instrument. Other transmissive fingerprint projection comparators and reflective/transmissive dual-purpose fingerprint projection comparators may also refer to this standard.

GA/T 748-2008: General specification of projective comparator for forensic fingerprint indentification

---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.
General specification of projective comparator for forensic fingerprint indentification ICS 13.310 A92 People's Republic of China Public Security Industry Standards Police fingerprint projection instrument than general technical requirements Posted 2008-01-22 2008-05-01 implementation People's Republic of China Ministry of Public Security

Foreword

This standard by the National Standardization Technical Committee on Forensic Science and Technology (SAC/TC179) and focal points. This standard is drafted by. Ministry of Public Security Evidence Identification Center. Participated in the drafting of this standard. Northern Technology Limited. The main drafters of this standard. Liu atlas, Zhou Shi, Xu Changchun. Police fingerprint projection instrument than general technical requirements

1 Scope

This standard specifies the technical requirements than the fingerprint projection instrument, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to fingerprinting reflection fingerprint comparison projector apparatus. Other transmissive fingerprint comparison projector apparatus and the reflection/transmission two Fingerprint comparison projector apparatus may also refer to this standard.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Particular requirements GB 4706.43-2005 household and similar electrical appliances - Safety projectors and similar appliances (IEC 60335-2-56.2002, IDT) GA/T 144-1996 fingerprint professional terminology

3 Terms and Definitions

GA/T 144-1996 established the following terms and definitions apply to this standard. 3.1 After lighting the object, an imaging optical system on a projection screen. 3.2 Precise magnification, the samples fingerprints and fingerprint samples are magnified and projected on the projection screen, for comparison testing equipment. 3.3 Flux, units per unit area on the projection screen. Lux. 3.4 An indicator reflecting the resolving power of the instrument to be separated as the inner surface of 1mm to measure the number of wire pairs, commonly used in the camera lens. 3.5 Let y was size, as the size of y ', the theoretical magnification of the objective lens beta], the relative magnification error calculated by the formula. [Xue (y '- y β) Xue/y β] × 100%

4 normal operating conditions

Power Input. AC (220 ± 22) V. Frequency. (50 ± 5) Hz. Ambient temperature. 0 ℃ ~ 40 ℃. Relative Humidity. < 95%. Around the non-flammable, explosive, corrosive gases and conductive dust. ......

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