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GB/T 22778-2021 English PDF

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Q: Should I purchase the latest version GB/T 22778-2021?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22778-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22778-2021: Liquid crystal digital quartz stopwatches
Status: Valid

GB/T 22778: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22778-2021	359	Add to Cart	4 days	Liquid crystal digital quartz stopwatches	Valid
GB/T 22778-2008	399	Add to Cart	3 days	Liquid crystal digital quartz stopwatches	Obsolete

Similar standards

GB/T 38023 GB/T 30106 QB/T 4055.2 GB/T 22777 GB/T 22779

Basic data

Standard ID: GB/T 22778-2021 (GB/T22778-2021)
Description (Translated English): Liquid crystal digital quartz stopwatches
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y11
Word Count Estimation: 18,183
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 22778-2021: Liquid crystal digital quartz stopwatches

---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.
Liquid crystal digital quartz stopwatches ICS 39.040.10 CCSY11 National Standards of People's Republic of China Replace GB/T 22778-2008 LCD digital quartz stopwatch Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 22778-2008 "LCD Digital Quartz Stopwatch", compared with GB/T 22778-2008, except for editorial changes The main technical changes outside the move are as follows. ---Modified the "normative references" (see Chapter 2, Chapter 2 of the.2008 edition); ---Revised the "period measurement accuracy" (see Table 2, Table 6,.2008 Edition of Table 2, Table 6); ---Modified the "temperature coefficient" (see Table 3, Table 3 of the.2008 edition); --- Deleted the requirements and test methods of "humidity resistance" related to low temperature and humidity resistance (see 5.8, 6.4.8,.2008 edition of 4.8, 5.4.8); --- Modify the requirements and test methods of "light resistance performance" to the requirements and test methods of "light performance" (see 5.14, 6.4.14, (2008 version 4.14, 5.4.14); --- Added "Additional Functions" (see 5.17, 6.4.17, Appendix A); ---Modified the "test environment" (see 6.1.1, 5.1.1 of the.2008 edition); ---Modified the "test equipment" (see Table 5, Table 5 of the.2008 edition); ---Modified the test method of "button fatigue resistance" (see 6.4.13,.2008 edition of 5.4.13); ---In the "factory inspection", an inspection of waterproof performance has been added (see Table 8, Table 8 of the.2008 edition); --- Modified the markings in "Dial surface and back cover" (see 8.1.1, 7.1.1 of the.2008 edition). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China National Light Industry Council. This document is under the jurisdiction of the National Watch Standardization Technical Committee (SAC/TC160). Drafting organizations of this document. Shenzhen Kingstar Industrial Co., Ltd., Shenzhen Huaming Watch Co., Ltd., Xi'an Light Industry Watch Institute Co., Ltd., Hunan Shengshiweide Technology Co., Ltd., Zhejiang Zhuoyue Electronics Co., Ltd., Zhangzhou Hengli Electronics Co., Ltd., Shenzhen Titan Clock Watch Technology Co., Ltd., Tianwang Electronics (Shenzhen) Co., Ltd., Zhuhai Rossini Watch Industry Co., Ltd., Shishi Xinjia Electronics Co., Ltd., Zhangzhou Yingzi Clock and Watch Co., Ltd., Shenzhen Shizhi Communication Technology Co., Ltd., Hangzhou Jingcheng Sanhe Timer Industrial Co., Ltd. The main drafters of this document. Ren Longbiao, Zhang Huaping, Zhao Zhiming, Chen Zhendong, Zhao Yan, He Guangxian, Chen Huabo, Lu Xiangyan, Wang Jian, Xie Aimin, Lan Liping, Chen Bin, Deng Jianjun, Yu Ke, Li Yuzhong, Guo Xingang, Huang Baoyu, Li Ping, Liu Zhong, Hong Xiaolan, Qiu Huazhi, Huang Zhixian, Chi Hanjun. The previous versions of the standard replaced by this document are as follows. ---GB/T 22778-2008. LCD digital quartz stopwatch

1 Scope

This document specifies the classification, requirements, test methods, inspection rules and standards of the liquid crystal digital quartz stopwatch (hereinafter referred to as "quartz stopwatch"). Logging, packaging, transportation and storage. This document applies to LCD digital quartz stopwatches with a quartz resonator and a nominal working voltage of DC1.50V or DC3.0V.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 2828.1 Sampling inspection procedure by attributes Part 1.Batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 2829 Periodic Inspection Sampling Procedures and Tables by Attributes (Applicable to the Inspection of Process Stability) GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 30106 Waterproof watches GB/T 38022 Anti-shock watches for clocks

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 categories

Quartz stopwatches are divided into dedicated type and non-dedicated type according to their purpose. See Table 1 for specific classification. Table 1 Classification Stopwatch type resolution usage Dedicated full-time 0.01s handheld Non-dedicated part time 0.01s handheld or wrist

5 requirements

5.1 Working temperature The functions and LCD display of the special quartz stopwatch should be complete and normal at -5℃~50℃. The functions and LCD display of the non-dedicated quartz stopwatch should be complete and normal within 0℃~50℃. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22778-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22778-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 22778-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22778-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 22778-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22778-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.