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在1 GHz至40 GHz頻率范圍內(nèi)工作的短程無線電設(shè)備(RF)檢測項目報價???解決方案???檢測周期???樣品要求? |
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本標準規(guī)定了用火焰發(fā)射或原子吸收光譜測定玻璃在100℃鹽酸溶液中耐浸蝕性的方法。玻璃的耐酸性用其單位表面積析出堿性氧化物的質(zhì)量來表示。本標準適用于具有良好耐酸性的硼硅玻璃制品,若將試樣經(jīng)過酸預(yù)處理,也可以測定玻璃材質(zhì)的耐酸性
本標準規(guī)定了在16mm卷片上拍攝古籍的方法和質(zhì)量要求。 本標準適用于永久性保存的裝幀形式為線裝、蝴蝶裝、包背裝、經(jīng)折裝的古籍和現(xiàn)代裝幀形式的古籍影印本的縮微拍攝。
本標準規(guī)定了玻璃顆粒在121±1℃水浸蝕30±1min時的試驗原理、試劑、儀器、試樣制備、試驗步驟、試驗結(jié)果的表示方法、分級和試驗報告。 本標準適用于耐水性較強的玻璃。
本標準規(guī)定了制作符合質(zhì)量要求的縮微膠片的程序,該縮微膠片上的影像滿足掃描的要求。本標準規(guī)定了在16 mm和35 mm銀-明膠型縮微膠片上拍攝文獻的方法,包括:縮微膠片上影像的方位、無影像區(qū)的使用、識別縮微膠片的必需信息。本標準適用于平臺式和輪轉(zhuǎn)式縮微攝影機。本標準不適用于拍攝技術(shù)圖樣、地圖、平面圖和報紙,它們使用現(xiàn)有的專門的標準或標準拍攝。
本標準為衛(wèi)星網(wǎng)絡(luò)中用于數(shù)據(jù)分配的只接收甚小口徑終端(VSAT)特性的標準化提供規(guī)范。 這些VSAT有下列特性: --分配給固定衛(wèi)星業(yè)務(wù)(FSS)、工作于Ku頻段12.50GHz~12.75GHz的專用空到地部分;分配給FSS和固定業(yè)務(wù)(FS)、工作于Ku頻段10.7GHz~11.7GHz的共享部分; --設(shè)計于無人值守下工作; --限于接收基帶數(shù)字信號; --配有一個或幾個地面輸出端口; --天線直徑不超過3.8m或其等效的相應(yīng)口徑。 在本標準中,考慮的設(shè)備包括“室外單元”和“室內(nèi)單元”?!笆彝鈫卧庇商炀€分系統(tǒng)和與其相連接的低噪聲模塊組成;“室內(nèi)單元”包括通信鏈路的其余部分以及這兩個單元之間的連接電纜。 本標準不包括有關(guān)VSAT安裝的任何要求、建議或信息,也不適用于VSAT網(wǎng)絡(luò)中心站。 本標準論及如下兩類規(guī)定: a)基本要求(見第4章) 規(guī)定的要求是為了保護此頻譜下衛(wèi)星和地面的其他用戶免受不能接受的干擾。此外還規(guī)定了實現(xiàn)電氣安全、機械結(jié)構(gòu)安全、太陽輻射防護,以及有害干擾防護的要求。 為了符合本標準,詳述于第4章相關(guān)的試驗和測量方法必須滿足。 b)建議(見第5章) 建議同特懷有關(guān),這些特性是采用VSAT而對其他無線系統(tǒng)具有小干擾保護時,能提供優(yōu)質(zhì)接收。 詳述于本標準第5章有關(guān)的試驗和測量方法只用于驗證目的,而符合這些建議并不表示遵守本標準的條件。 應(yīng)執(zhí)行所有有關(guān)要求的試驗,并把結(jié)果填寫在試驗報告的數(shù)據(jù)頁上。符合建議的性能情況也應(yīng)在試驗報告的數(shù)據(jù)頁上注明。
本標準規(guī)定了l6 mm、35 mm和65 mm電影膠片上機讀識別碼的位置和尺寸,這些機讀碼是機讀型的潛影檢索碼。本標準還規(guī)定了這些機讀碼的編碼格式和掃描器的掃描區(qū)及光譜特性。1.2本標準還規(guī)定了拍攝原底或中間印制用的l6 mm、35 mm和65 mm電影膠片上人讀識別(檢索)碼的位置、尺寸和內(nèi)容。這些電影膠片同時含有1.1中所述的機讀檢索碼。 注:通常這些檢索碼在制造膠片時曝光在膠片上。1.3本標準進一步規(guī)定了由制造廠任選的印制特定膠片類型識別信息所用的區(qū)域。1.4本標準還規(guī)定了膠片上不讓膠片制造廠曝光的區(qū)域,保留這區(qū)域是為方便用戶記錄數(shù)據(jù)。1.5后本標準規(guī)定了35 mm和65 mm膠片任選的畫幅指示標志。
本標準規(guī)定了絕緣外徑在1mm以下的極細同軸電纜(以下簡稱電纜)及組件(以下簡稱組件)的要求、試驗方法、檢驗規(guī)則、標志和包裝等要求。本標準適用于通訊設(shè)備或類似電子裝置內(nèi)部模塊間或設(shè)備之間工作頻率范圍為DC~6000MHz的短距離連接電纜及由此類電纜與連接器組成的組件。
本標準用于評價柴油機油對各種金屬,尤其是柴油機凸輪隨動件和軸承中常用的鉛、銅合金等的腐蝕傾向。 本標準采用單位制(SI)單位。 本標準并未對所有與使用相關(guān)的安全問題提出建議,用戶在使用本標準之前應(yīng)建立適當?shù)陌踩捅Wo措施,并制定相應(yīng)的管理制度。
本標準規(guī)定了通過測定氧化前后油中金屬含量來表征試樣腐蝕性能的試驗方法。本標準適用于檢測柴油機油對柴油機中凸輪隨動件和軸承所含的銅、鉛等金屬的腐蝕傾向。
本部分規(guī)定了絕緣外徑在1mm以下的同軸電纜的要求、試驗方法、檢驗規(guī)則、標志和包裝等要求。本部分適用于通訊設(shè)備或類似電子裝置內(nèi)部模塊間或設(shè)備之間工作頻率范圍為DC~6000MHz的短距離連接電纜。
This Standard specifies the essential requirements and minimum standards for operation of the radiocommunications aspects of all radiocommunication transmitters and receivers used in cordless telephones operating in the 1.7/40 MHz, 30/39 MHz and 34/40 MHz frequency bands. It contains conditions and methods of test applicable to establish those requirements as well as some general requirements including equipment marking.Cordless telephones consist of a base unit, which may be connected to the PSTN, and a portable unit (handset). Each unit contains a transmitter and receiver which are used for short range communication between the base unit and portable unit.This Standard does not address the requirements for the connection of this equipment to the PSTN or user safety requirements.This Standard does not apply to—(a) telephones designed or intended to operate in a cellular mobile telephone service; or(b) cordless telephones designed or intended to operate on other frequencies not specified in this Standard.
Lays down detailed measuring methods selected for assessing the essential properties of the equipment, and in particular for those characteristics for which unreliable or ambiguous result may be obtained if varying methods or conditions are used. Does not apply to transmitters in which the aerial cannot be disconnected or disabled and replaced by a test load, such as small battery-powered transmitters or transmitters for personal use, or to transmitters intended to be connected to an open wire feeder line.
The method given is intended for type tests, but may be used for acceptance tests and routine tests, too. This part shall be read in conjunction with Part 6 (IEC 244-6). The specified method is similar to that given in CISPR Publication 11, Sub-clause 5.2.2.
Supplements IEC 244-7, specifying the arrangement of the transmitter, test load and power supply. Applies to frequencies up to 12 GHz.
This Recommendation intends to establish reference earth station co-polar and cross-polar antenna patterns for the broadcasting-satellite service (BSS) in the 11.7-12.75 GHz band.
This Recommendation intends to establish reference earth station co-polar and cross-polar antenna patterns for the broadcasting-satellite service (BSS) in the 11.7-12.75 GHz band.For the broadcasting-satellite service (BSS) in the 11.7-12.75 GHz band.
This Recommendation intends to establish reference earth station co-polar and cross-polar antenna patterns for the broadcasting-satellite service (BSS) in the 11.7-12.75 GHz band.For the broadcasting-satellite service (BSS) in the 11.7-12.75 GHz band.
The ITU Radiocommunication Assembly, considering that Resolution 531 (WRC-95) of the World Radiocommunication Conference (Geneva,1995) invites the ITU-R to study the possibilities to improve the efficiency of the Appendix 30A (Orb-88) Plans of the Radio Regulations (RR) by taking due account of the technological progress.ITU-R to study the possibilities to improve the efficiency of the Appendix 30A (Orb-88) Plans of the Radio Regulations(RR) by taking due account of the technological progress.The ITU Radiocommunication Assembly,considering that Resolution 531 (WRC-95) of the World Radiocommunication Conference (Geneva,1995) invites the ITU-R to study the possibilities to improve the efficiency of the Appendix 30A (Orb-88) Plans of the Radio Regulations (RR) by taking due account of the technological progress. ITU-R to study the possibilities to improve the efficiency of the Appendix 30A (Orb-88) Plans of the Radio Regulations(RR) by taking due account of the technological progress.