阿美泰克2014样本

AMETEK阿美特克咨..询1*37-99-4-528*06双环贸易为你提供阿美特克，点过的路过的千万不能错过了，相信我们会是你最终的选择。

阿美特克传感器板80485SE美国AMETEK阿美特克分析仪欢迎咨询详细内容AMETEK阿美特克发生器305010901SAMETEK氧化锆传感器71785SEAMETEK过滤器71849SEAMETEK镜头CH13-0007-tAMETEK电路板13-0307AMETEK铂电阻13-0236氧化锆锆管AMETEK71785SE阿美特克传感器板80485SEAMETEK比值分析仪测量池880324901AMETEK比值分析仪检测电路板880020901AMETEK阿美特克比值分析仪配件200880001AMETEK269323011AMETEK阿美特克温度控制器269323011AMETEK烟尘仪4200AMETEK阿美特克74422SEAMETEK射频导纳液位计UP010620B1AMETEK镉灯300-2070AMETEK 氧化锆头71063SE阿美特克传感器板80485SEAMETEK阿美特克过滤组件100-1848AMETEK阿美特克滤芯300-6217AMETEK 阿美特克氧化锆WDG1210/Insitu 72"AMETEK阿美特克露点仪3050AMETEK阿美特克气体分析仪Thermox-CMFA-P2000AMETEK阿美特克500124901AMETEK阿美特克硫磺比值仪光源电源880107902S阿美特克硫磺比值仪光源触发器880118901AMETEK阿美特克线性传感器P-10A-10KA238阿美特克传感器板80485SE阿美特克传感器板80485SEAMETEK阿美特克压力模块APM002CAMETEK阿美特克过滤器74422seAMETEK阿美特克储存箱880060901SAMETEK H2S分析仪H2S分析仪933-光源镉灯-300-2070H2S分析仪933-空心阴极铜线灯-300-8707AMETEK阿美特克马达119153-54阿美特克传感器板80485SE。

阿美泰克氧分析仪说明书
1、氧气分析仪先不要装入烟道，打开变送器和传感器上盖，检查各电缆连接正确。

2、接通电源,电路板上POWER红色发光二极管开始慢速闪烁（周期1秒），表示电源接通，正在预热，此时无信号输出，100秒后，发光二极管常亮，表示预热完毕，进入测量状态。

若发光二极管快速闪烁（周期0.25秒），则表示传感器连接或变送器电路有故障。

3、测量状态下，氧气分析仪在烟道外稳定30分钟后，显示空气中氧气含量20.6±0.4%，传感器可以装入烟道。

4、传感器装入烟道30分钟后，进行手动空气校准，先将浮子流量计接入传感器流量调节阀空气入口，将电路板上SW1开关拨向MAN 侧，CAL绿色发光二极管点亮，传感器电磁阀打开，调节流量调节阀旋纽，使流量达到0.2至0.6L/min范围内，稳定5分钟后，SW1开关拨回AUTO侧，发光二极管熄灭，电磁阀关断，氧气浓度显示20.6%,然后逐步下降到烟道氧气水平上。

5、关闭变送器和传感器上盖。

bcl-2 PCR Primers Set Product No. B9179 Store at –20 ºCProduct DescriptionIn recent years, several genes have been linked to apoptosis. The bcl-2 family of genes regulates PCD either positively or negatively. Bcl-2 and members of its family have been found to block apoptotic cell death. Bcl-2 protein heterodimerizes with Bax (Bcl-2 Associated X protein), which is a potent mediator of programmed cell death. The Bcl-2/Bax ratio appears to determine whether some cells live or die.1-4The bcl-2 PCR Pr imers Set contains both sense and antisense primers for the amplification of the bcl-2αgene. It is designed for PCR† detection of human, rat and mouse cDNA levels (representing mRNA expression) of the bcl-2α apoptotic gene. No ampli-fication of the genomic DNA has been observed.The size of the amplified product resulting from the use of the bcl-2 PCR Primers Set is 127 bp.Component• bcl-2 PCR Primers Set, Product No. B9179 1 vial Equipment and Reagents Required but Not Provided (Sigma product numbers have been given where appropriate)• Thermal cycler• Taq DNA polymerase, Product No. D4545 or equivalent• Deoxynucleotide mix, 10 mM, Product No. D7295 or equivalent• Agarose• Ethidium bromide, 500 µg/ml, Product No. E1385 • PCR 100 bp low ladder, Product No. P1473• Gel loading solutions, Product No. G2526 or G7654• PCR grade water, Product No. W1754• Mineral oil, Product No. M8662• PCR microtubes, Product No. Z37,487-3 or Z37,496-2StorageStore the vial at −20 °C.Preparation InstructionsThe bcl-2 PCR Primers Set contains 1 nmoles of each primer (sense and antisense). Centrifuge the tube briefly in order to collect the tube contents. For the following procedure, resuspend the primers set in100 µl deionized water to a final concentration of10 pmole/µl. Mix until the solution is homogenous. Once suspended, store the solution at –20 °C. To avoid repeated freeze-thaw cycles, aliquot the primer solution for long-term storage.ProcedureNote: Use aseptic techniques and use aerosol barrier tips while performing PCR experiments.1. Thaw the bcl-2 PCR Primers Set on ice, beingsure that the solution is homogenous.2. Add the following reagents to a PCRmicrocentrifuge tube in the following order:Amount for50 µl singlePCRreactionFinalconcentrationin the PCRreaction Water To 50 µl ----10X PCR Buffer 5 µl 1X2 mM dNTP solution 5 µl 0.2 mM ofeach dNTP25 mM MgCl2*solution3 µl 1.5 mMbcl-2 PCR PrimersSet, 10 pmole/µl2 µl 0.4 µM cDNA** 2 µl ~30 ngTaq DNAPolymerase,5 units/µl1 µl 0.1 units/µl Total volume50 µl -* When using the bcl-2 PCR Primers Set for thefirst time, you may set two additional reactiontubes with a higher and a lower MgCl2concentrations (see Note at the end of thissection).** Optimize this parameter with your own cDNA.3. Mix gently by finger tapping and centrifuge briefly to collect the mixture in the bottom of the tube. Overlay the reaction mixture with 2 drops (~30 µl) of mineral oil to cover the surface of the reaction mixture if not using a thermal cycler with a heated lid. Place the tube in the thermal cycler when the thermal cycler reaches 95 oC, and run the following PCR program. 95 oC for 2 min 94 oC for 45 sec 53 oC for 45 sec x 30 cycles 72 oC for 1.5 min 72 oC for 7 min The amplified DNA can be evaluated by agarose gel electrophoresis.Note: Using different thermal cyclers:For a better detection of the amplified product you may increase the number of amplification cycles. In case you do not see differences in the amount of the amplified DNA fragments, decrease the number of cycles to verify your results.In rare cases, some of the parameters should beoptimized for the specific thermal cycler or cDNA samples. The most frequently adjusted factors are MgCl 2 concentration and annealing temperature. You may prepare three different reactions using MgCl 2 at a concentration of 0.5-3 mM (e.g., 0.5-0.8 mM, 1.5 mM and 3 mM). Optimize the MgCl 2 and/or the annealing temperature on your instrument using the positive control cDNA provided before using your own cDNA.Troubleshooting GuideProblem Cause Solution A PCR component may be missing or degraded. Try to isolate the problematic reagent by replacing it with a fresh one. A checklist is also recommended when assembling reactions.No PCR products cDNA or MgCl 2concentration is not optimal .Optimize the cDNA and MgCl 2 concentrations.Highbackground, smearing or nonspecific bandsIncrease the annealing temperature or decrease the MgCl 2concentration. Another solution for avoiding high background is to decrease the amount of cDNA template used for amplification.Contamination with other DNAUse sterile techniques while performing PCR experiments. cDNA quality is not sufficientUse a different cDNA preparation.Amplifiedproducts are not the correct sizeNon-optimal PCR conditions Optimize PCR conditions especially cDNA and MgCl 2 concentrations and annealing temperature. Poor resolution of products in agarose gelUse 2% agarose gel and increase run time.References1. Oltavi, Z.N., et al ., Cell, 74, 609 (1993)2. Korsmeyer, S.J., Cancer Research (Suppl), 59,1693s (1999)3. Agarwal, N. and Metha, K., Biochem. Biophys.Res. Commun., 230, 251 (1997)4. Aggarwal, S. and Gupta, S., J. Immunol., 160,1627 (1998)†The PCR process is covered by patents owned by Hoffman-LaRoche, Inc. Purchase of this product does not convey a license under these patents.ya 6/00Sigma brand products are sold through Sigma -Aldrich, Inc.Sigma-Aldrich, Inc. warrants that its products conform to the information contained in this and other Sigma -Aldrich publications. Purchaser must determine the suitability of the product(s) for their particular use. Additional terms and conditions may apply.Please see reverse side of the invoice or packing slip.。

SIMONA®PP-H AlphaPlus® Added value in chemical tank and equipment engineering2SIMONA ®PP-H AlphaPlus ®SIMONA ®PP-H AlphaPlus ® –Added value in chemical tank and equipment engineeringPP-H, non-nucleatedPP-H, β-nucleatedPP-H, mildly α-nucleatedSIMONA ®PP-H AlphaPlus ®SIMONA ®PP-H AlphaPlus ® is a homopolymeric polypropylene (PP-H) featuring a specially modified formula that makes it the perfect choice for applications within the area of industrial tank and plant engineering.Compared to standard PP-H, SIMONA ®PP-H AlphaPlus ® offers the following benefits:Finer and more stable alpha c rystalline structure Superior notched impact strength and enhanced rigidity Improved processing properties and welding properties Longer service life (FNCT)Improved chemical resistance and superior stress crackresistanceAdditional safety reserves even for critical applications Excellent value and highly cost-effectiveFiner and more stable alphacrystalline structureUsing an adapted processing method and introducing a special nucleating agent, we have created a PP-H with an α-crystalline modification that offers a number of genuine advantages even in challenging fields of application.In SIMONA ®PP-H AlphaPlus ® we have developed a superb solution tailored to the requirements of industrial tank and plant engineering.Photographs of PP-H types taken under an optical microscope100 µmSIMONA ®PP-H AlphaPlus ®3Standard PP-HStandard PP-HSuperior notched impact strength and enhanced rigiditySIMONA ®PP-H AlphaPlus ®offers users considerably improved rigidity, in addition to increased toughness. In fact, the level of rigidity measured at 100 °C is twice as high as that of β-nucle-ated PP-H.Modulus of elasticity in various types of PP (single measurement on pressed sheets)Notched impact strength according to Charpy method20 °C40 °C60 °C80 °C 100 °C23 °C10 °C0 °C– 10 °CSIMONA ®PP-H AlphaPlus ®SIMONA PP-H AlphaPlus ®β-nucleated PP-HAt low temperatures, in particular, SIMONA ®PP-H AlphaPlus ® displays higher impact resistance than standard PP-H, thus combining greater functionality with improved safety.β-nucleated PP-H4SIMONA ®PP-H AlphaPlus ®SIMONA ®PP-H AlphaPlus ® –Outstanding material propertiesSIMONA ®PP-H AlphaPlus ® in bend test according to DVS 2203-5Excellent welding propertiesThe various welding methods applied within the area of plastics processing can often result in changes to the mor-phology of a specific material. This has a significant impact on the properties of welded joints and thus also on the overall quality of plastic parts and assemblies, particularly in the case of polypropylene. A prime example is heated element butt welding, which generally produces welding beads in the joint zone. In this case, a notch is formed in the area of the weld seam, potentially causing stress concentration underincreasing mechanical loads. In turn, stress concentration in the notch root of a weld seam can induce stress cracks under tensile loading or when exposed to chemicals. The ultra-fine structure of SIMONA ®PP-H AlphaPlus ® is thermodynamically stable and remains intact during welding; this feature applies to a range of different welding methods. The thus resulting toughness significantly reduces the level of stress concentra-tion in the notch root. Technological bend tests have shown a considerable increase in the bend angle achievable with this material.SIMONA ®PP-H AlphaPlus ®5Longer service lifeThe superior safety properties of SIMONA ®PP-H AlphaPlus ®are reflected in its higher resistance to slow crack growth – as demonstrated by means of FNCT (Full Notched Creep Test). Compared to a mildly α-nucleated standard PP-H with a useful life of between 700 and 800 hours, SIMONA ®PP-H AlphaPlus ® is capable of achieving a service life of more than 1500 hours. In contrast, β-nucleated PP-H is usually associated with a maximum life of 700 hours.The superior properties associated with this material have also been confirmed by Hessel Engineering as part of tensilecreep tests on sheets made of SIMONA ®PP-H AlphaPlus ® and joined by means of heated element butt welding. The required minimum service life of a welded joint, as defined in the certification guidelines of the DIBt (Deutsches Institut für Bautechnik Berlin) for polypropylene compounds were met by SIMONA ®PP-H AlphaPlus ® – with a substantial safety margin.Improved chemical resistance and superior stress crack resistanceThe fine morphology and increased toughness of SIMONA ®PP-H AlphaPlus ® also have a positive effect on its chemical resistance. Alongside improved welding properties, surface is much less susceptible to chemical attack. This results in a longer service life and greater operational reliability. Again, one of the key factors is the fine and highly stable crystalline structure associated with SIMONA ®PP-H AlphaPlus ®, which helps to reduce material-related stress. Within this context, resistance to stress-crack-inducing chemicals is high in critical regions such as weld seams or anchor points, which are subjected to internal stress or stress from external sources.Service life of various types of PP in FNCT (Full Notched Creep Test) at 80 °C and 4.0 MPaStandard PP-HSIMONA ®PP-H AlphaPlus ®β-nucleatedPP-H6SIMONA ®PP-H AlphaPlus®Processing versatilitySIMONA ®PP-H AlphaPlus ®can be processed using various methods.Deep-drawing Gluing DrillingDie-cutting Bolting Warm bendingRiveting MillingSawing Laser cutting Welding Turning Water-jet cuttingCold formingCold curvingCuttingOur Technical Service Center team looks forward to assisting you:Phone +49 (0) 67 52 14 - 587 Fax +49 (0) 67 52 14 - 302*************SIMONA®PP-H AlphaPlus®SIMONA®PP-H AlphaPlus®-SK (polyester-backed)The dimensions specified are standard dimensions. Other sizes, thicknesses, lengths, diameters and colours as well as glass-fibre-backed SIMONA®PP-H AlphaPlus®-GK Sheets available on request.Please contact our sales department for further details concerning availability: ***************.Pressed sheets made of SIMONA®PP-H grey are available in thicknesses from 80 to 150 mm.: round, triangular TA 90, triangular TA 80, three-core, two-core, special profile ovalSIMONA®PP-H AlphaPlus®7SIMONA AMERICA INC.101 Power Boulevard Archbald, PA 18403USABoltaron Inc.A SIMONA Company1 General Street Newcomerstown, OH 43832 USASALES OFFICESSIMONA S.A.S. FRANCE 43, avenue de l’Europe 95330 DomontFrancePhone +33(0)1 39354949 Fax +33(0)1 39910558 ******************SIMONA UK LIMITED Telford DriveBrookmead Industrial Park Stafford ST16 3STGreat BritainPhone +44(0)1785 222444 Fax +44(0)1785 222080 ****************** SIMONA AG SWITZERLAND IndustriezoneBäumlimattstrasse 164313 MöhlinSwitzerlandPhone +41(0)61 8559070 Fax +41(0)61 8559075 ****************** SIMONA S.r.l. SOCIETÀUNIPERSONALEVia Volontari del Sangue 54a20093 Cologno Monzese (MI)ItalyPhone +39 02 250851Fax +39 02 2508520*************************SIMONA IBERICASEMIELABORADOS S.L.Doctor Josep Castells, 26–30Polígono Industrial Fonollar08830 Sant Boi de LlobregatSpainPhone +34 936354103Fax +34 936308890******************SIMONA Plast-Technik s.r.o.Paříkova 910/11a19000 Praha 9 – VysočanyCzech RepublicPhone +420 236 160 701Fax +420 476 767 313******************SIMONA POLSKA Sp.z o.o.ul. Wrocławska 36Wojkowice k / Wrocławia55-020 ŻórawinaPolandPhone +48(0)71 3528020Fax +48(0)71 3528140******************OOO “SIMONA RUS”Projektiruemy proezd No. 4062,d. 6, str. 16BC PORTPLAZA115432 MoscowRussian FederationPhone +7 (499) 683 00 41Fax +7 (499) 683 00 42******************SIMONA FAR EAST LIMITEDRoom 501, 5/FCCT Telecom Building11 Wo Shing StreetFo Tan, Hong KongChinaPhone +852 ********Fax +852 ***************************SIMONA ENGINEERING PLASTICSTRADING (Shanghai) Co. Ltd.Room 5, 19/F, Block BHongqiao Nanfeng TownNo. 100 Zunyi RoadChangning DistrictShanghaiChina 200051Phone +86 21 6267 0881Fax +86 21 6267 0885**********************SIMONA INDIA PRIVATE LIMITEDStar Hub, Unit No. 204,2nd Floor, Building No. 1,Sahar Road, Andheri East,Mumbai 400099IndiaPhone +91(0)2266197 100Fax +91(0)2266197 105*******************SIMONA AGTeichweg 1655606 KirnGermanyPhone +49(0)6752 14-0Fax +49(0)6752 14-211**************www.simona.dePRODUCTION SITESPlant ITeichweg 1655606 KirnGermanyPlant IISulzbacher Straße 7755606 KirnGermanyPlant IIIGewerbestraße 1–277975 RingsheimGermanySIMONA Plast-Technik s.r.o.U Autodílen č.p. 2343603 Litvínov-Chudeřín Czech RepublicSIMONA ENGINEERING PLASTICS (Guangdong) Co. Ltd.No. 368 Jinou RoadHigh & New Technology Industrial Development Zone Jiangmen, GuangdongChina 529000SIMONA AMERICA INC. 101 Power Boulevard Archbald, PA 18403USAPhone +1 866 501 2992 Fax +1 800 522 4857 *********************** Boltaron Inc.A SIMONA Company1 General Street Newcomerstown, OH 43832 USAPhone +1 800 342 7444 Fax +1 740 498 5448 ***************** Upon publication of a new edition all previous editions shall become void. The authoritative version of this publication can be found on our website at www.simona.de. All information furnished in this publication reflects our current scope of knowledge on the date of publication and is designed to provide details of our products and potential fields of application (errors and omissions excepted, including typographical mistakes).P r i n t e d o n H e l l o F a t m a t t b y D e u t s c h e P a p i e r. 0 1 / 2 0 1 7 -0 1 / 1 7 -G B -5 0 0 -W BAll specifications are deemed to be approximate values in respect of the specific material and may vary depending on the processing methods used. In general, data specified applies to average values measured on extruded sheets with a thickness of 4 mm. In the case of sheets manufactured by means of pressing, testing is gen e rally performed on sheets with a thickness of 20 mm. Deviations from the values specified are possible if the sheets in this thickness are not available. In the case of backed sheets, all technical specifications relate to the non-backed base sheets. Information presented herein is not necessarily applicable to other products (e.g. pipes, solid rods) of the same material or products that have undergone downstream processing. Suitability of materials for a specific field of application must be assessed by the party responsible for processing or the end-user. All technical specifications presented herein are designed merely to provide assistance in terms of project planning. Theydonotconstituteaguaranteeofspecificpropertiesorqualities.Forfurtherinformation,*****************************************************.。

黑色母2014A
品牌：添
黑牌
型号：
2014A
产品规
格：
3.0*3.8
mm
颜色：黑
色
耐热性：
400 ℃
产品详细说明
色母巨人公司添黑系列，添黑牌黑色母2014A选用进口美国色素高浓度黑色素碳黑和全新料聚乙稀PE/EVA树脂,及进口颜料助剂, 经高能量密炼水冷, 风冷切粒而成. 碳黑含量50%
外观:3.3*3.8椎形片状黑色体.
适应范围: 适用于大部分热性树脂. 注塑, 抽粒, 压板等工艺. 适宜高要求高质量ＡＢＳ，ＰＣ，ＰＣ／ＡＢＳ，ＰＡ，ＰＥＴ，ＰＢＴ，ＨＩＰＳ,ＰＯＭ，ＰＭＭＡ等工程料与再生料．属环保高浓度,高光度专用注塑级黑色母粒. 此产品通过欧盟SGS环保重金属八大项检测认证合格. 及美国食物局ROHS认证合格. 优点: 环保, 无毒, 无味, 无烟, 产品表面光滑亮泽和实色颜色稳定, 不会出现色点和色纹等现象, 既降低成本, 节约添加剂. 减少厂房场地污染.
用法: 与原料揽拌均匀即可生产用量: 建议用量0.5%-3%(视产
品要求而定)
技术参数: 堆积比重33”C 1150kg/m3
溶点:138-400’C
溶指:36g/10min
水份:0.001%
包装:25kg/袋, 聚乙稀奶白印刷袋或纸塑复合袋(可按客户需求予以订做)储存: 存放于阴凉干燥处. 忌爆晒, 雨淋
备注: 以上数据不被用作特定技术规格,其基本实验数据,只作为本产品性能参考.色母巨人欢迎你,来人来电洽谈.。

Agilent Technologies355C, D, E, FVHF AttenuatorsOperating and ServiceManualAgilent Part Number: 00355-90051Printed in USAApril 2002Supersedes: November 2001NoticeThe information contained in this document is subject to change without notice.Agilent Technologies makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.Agilent Technologies assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent Technologies. This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without prior written consent of Agilent Technologies.Restricted Rights LegendUse, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 for DOD agencies, and subparagraphs (c)(1) and (c)(2) of the Commercial Computer Software Restricted Rights clause at FAR 52.227-19 for other agencies. Serial Number PrefixThe specifications in this manual apply to the instruments with the following serial numbers or greater:Model Serial Numbers (min.)355C2524A44630355D2522A46649355E1205A38159355F1203A03244© Copyright 1997, 2001, 2002Agilent Technologies, Incii VHF Attenuators Operating and Service ManualWhat You’ll Find in This Manual…This operating and service manual contains the following:•Instrument Description and Specifications•Replaceable Parts and Accessories•Installation Instructions•Operating Instructions•Schematics and DiagramsWarrantyCustom systems are warranted by contractual agreement between AgilentTechnologies and the Customer.Certification Agilent Technologies certifies that this product met its published specifications at the time ofshipment from the factory.Documentation Warranty THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED "AS IS," AND IS SUBJECT TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, AGILENT DISCLAIMS ALL WARRANTIES,EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN,INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. AGILENT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR PERFORMANCE OF THIS DOCUMENT OR ANY INFORMATION CONTAINED HEREIN. SHOULD AGILENT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL CONTROL.VHF Attenuators Operating and Service Manual iiiAssistance Product maintenance agreements and other customer assistance agreementsare available for Agilent Technologies products.For assistance,call your local Agilent Technologies Sales and Service Office(refer to“Support and Service”).Support and ServiceAny adjustment, maintenance, or repair of this product must be performedby qualified personnel. contact your local Agilent Technologies sales andservice office.Online assistance:/find/assistUnited States (tel)180****4844Latin America(tel) (305) 269 7500(fax) (305) 269 7599Canada(tel)187****4414(fax) (905) 282-6495New Zealand (tel) 0 800 738 378 (fax) (+64) 4 495 8950Japan(tel) (+81) 426 56 7832(fax) (+81) 426 56 7840Australia(tel) 1 800 629 485(fax) (+61) 3 9210 5947Malaysia(tel) 1 800 828 848 (fax) 1 800 801 664Philippines(tel) (632) 8426802(tel) (PLDT subscriber only):1 800 16510170(fax) (632) 8426809(fax) (PLDT subscriber only):1 800 16510288Thailand(tel) outside Bangkok:(088) 226 008(tel) within Bangkok:(662) 661 3999(fax) (66) 1 661 3714Taiwan(tel) 0800-047-866 (fax) (886) 2 25456723People’s Republic of China(tel) (preferred): 800-810-0189(tel) (alternate):10800-650-0021(fax) 10800-650-0121India(tel) 1-600-11-2929(fax) 000-800-650-1101iv VHF Attenuators Operating and Service ManualVHF Attenuators Operating and Service Manual vSafety and Regulatory InformationReview this product and related documentation to familiarize yourself withsafety markings and instructions before you operate the instrument Thisproduct has been designed and tested in accordance with international standards.WARNING The WARNING notice denotes a hazard. It calls attention to a procedure,practice,or the like,that,if not correctly performed or adhered to,could result in personal injury. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.CAUTION The CAUTION notice denotes a hazard. It calls attention to an operatingprocedure,practice,or the like,which,if not correctly performed or adheredto, could result in damage to the product or loss of important data. Do notproceed beyond a CAUTION notice until the indicated conditions are fullyunderstood and met.Instrument MarkingsWhen you see this symbol on your instrument, you should refer to the instrument’s instruction manual for important information.This symbol indicates hazardous voltages.The laser radiation symbol is marked on products that have a laser output.This symbol indicates that the instrument requires alternating current (ac) input.The CE mark is a registered trademark of the European Community. If it isaccompanied by a year, it indicates the year the design was proven.The CSA mark is a registered trademark of the Canadian Standards Association.1SM1-A This text indicates that the instruments an Industrial Scientific and Medical Group 1Class A product (CISPER 11, Clause 4).This ISM device complies with Canadian ICES-001.Cet appareil ISM est conforme a la norme NMB du Canada.This symbol indicates that the power line switch is ON.This symbol indicates that the power line switch is OFF or in STANDBY position.!Safety Earth Ground This is a Safety Class I product (provided with a protective earthing terminal).An uninterruptible safety earth ground must be provided from the main power source to the product input wiring terminals, power cord, or supplied power cord set. Whenever it is likely that the protection has been impaired, the product must be made inoperative and secured against any unintended operation.Before Applying Power Verify that the product is configured to match the available main powersource as described in the input power configuration instructions in thismanual. If this product is to be powered by autotransformer, make sure thecommon terminal is connected to the neutral(grounded)side of the ac powersupply.vi VHF Attenuators Operating and Service ManualTypeface ConventionsItalics•Used to emphasize important information:Use this software only with the xxxxxX system.•Used for the title of a publication:Refer to the xxxxxX System-Level User’s Guide.•Used to indicate a variable:Type LOAD BIN filename.Instrument Display•Used to show on-screen prompts and messages that you will see on thedisplay of an instrument:The xxxxxX will display the message CAL1 SAVED.[Keycap]•Used for labeled keys on the front panel of an instrument or on acomputer keyboard:Press[Return].{Softkey}•Used for simulated keys that appear on an instrument display:Press{Prior Menu}.User Entry•Used to indicate text that you will enter using the computer keyboard;text shown in this typeface must be typed exactly as printed:Type LOAD PARMFILE•Used for examples of programming code:#endif // ifndef NO_CLASSPath Name•Used for a subdirectory name or file path:Edit the file usr/local/bin/sample.txtComputer Display•Used to show messages, prompts, and window labels that appear on acomputer monitor:The Edit Parameters window will appear on the screen.•Used for menus, lists, dialog boxes, and button boxes on a computermonitor from which you make selections using the mouse or keyboard:Double-click EXIT to quit the program.VHF Attenuators Operating and Service Manual viiTypeface Conventionsviii VHF Attenuators Operating and Service ManualGeneral InformationGeneral InformationThis manual contains operating instructions for 355C, 355D, 355E, and355F VHF Attenuators. Included in the manual is the information requiredto install and test these attenuators.Description The Agilent Technologies Model 355C, 355D, 355E, and 355F attenuatorsare50-ohm,coaxial step attenuators usable from dc to1GHz.Models355Cand 355E provide 0 to 12 dB of attenuation in 1 dB steps.Models 355D and 355F provide 0 to 120 dB of attenuation in 10 dB steps.The 355C and 355D are manual attenuators. The 355E and 355F areprogrammable. The schematic for the Model 355C/D is shown in Figure1,and that of the Model 355E/F in Figure2.The attenuator sections consist of resistor pi networks which are switched inor bypassed by microswitches. In the 355C and 355D, the microswitchesare actuated by cams (see Figure1). In the 355E and 355F, themicroswitches are actuated by solenoids (see Figure2). The standard RFconnectors are BNC type.In the355E and355F,power must be continuously applied to the solenoid toactuate the microswitch(i.e.,to insert an attenuator section).Each solenoiddraws approximately at 15 Vdc.Dimensions for the individual instruments are provided in Table1,“Dimensions,” on page2.VHF Attenuators Operating and Service Manual1General InformationNOTE Dimensions are for general information only. If accurate dimensions arerequired for building special enclosures, contact your nearest AgilentTechnologies office.Table 1Dimensions355C, D355E, FLength152 mm (5.98 in)137 mm (5.39 in)Height69 mm (2.72 in)72 mm (2.83 in)Width (without RF connectors)45 mm (1.77 in)45 mm (1.77 in)Width (with connectors):Standard (BNC) Option 001 (Type-N) Option 005 (TNC)73 mm (2.88 in)94 mm (3.70 in)69 mm (2.72 in)73 mm (2.88 in)121 mm (4.76 in)24 mm (0.94 in)Protrusion of connectors:BNC Type-N TNC 14.06 mm (0.55 in)24.5 mm (1.00 in)12 mm (0.47 in)14.06 mm (0.55 in)24.5 mm (1.00 in)12 mm (0.47 in)General InformationFigure 1355C and 355D Schematic DiagramGeneral InformationFigure 2355E and 355F Schematic DiagramGeneral Information Specifications Instrument specifications are listed in Table2. These specifications are theperformance standards or limits against which the instruments may betested.Table 2SpecificationsMODELS 355C and 355EAttenuation Range0 to 12 dBAttenuation Steps 1 dBOverall Accuracy:at 1000 Hzdc to 500 MHz dc to 1000 MHz 0.1 dB 0.25 dB 0.35 dBMODELS 355D and 355FAttenuation Range0 to 120 dB Attenuation Steps10 dB Overall Accuracy:at 1000 Hz below 1000 MHz 0 to 120 dB 0.3 dB 0 to 90 dB 1.5 dB 90 to 120 dB 3 dBMODELS 355E and 355FSwitching Speed65 msRequired Solenoid Power+15 to +18 Vdc, 1/8 A MODELS 355C/E and 355D/FFrequency Range dc to 1000 MHz Impedance50 ohms (nominal) Maximum SWR (input and output):below 250 MHz below 500 MHz below 1000 MHz 1.2 1.3 1.5Maximum residual attenuation(insertion loss at 0 dB)0.20 dB + 2.30 dB/GHz Maximum power dissipation0.5W (average) Maximum pulse voltage350 Vpk 200sec ConnectorsStandard Option 001 Option 005BNC (female) Type-N (female) TNC (female)11. Available on the 355C only.General InformationPower RatingCAUTION Do not exceed the RF power rating of0.5W average,or2450W peak with amaximum pulse width of 200 s. Do not connect an attenuator RF input oroutput connector to greater than 5 Vdc. If the attenuator must be connectedto a device with a potential greater than 5 Vdc, use a blocking capacitor. Accessories Supplied The 355E and 355F programmable attenuators are supplied with a 7-pin,male connector (1251-1037) for the solenoid drive input.Attenuator Options Figure3on page7shows solenoid and connector wiring diagrams availableunder Option 007 for 355E and 355F.General Information Attenuator OptionsFigure 3355E and 355F Solenoid and Connector Wiring DiagramsInstallationInstallationInitial Inspection Inspect the shipping container for damage. If the shipping container orcushioning material is damaged, it should be kept until the contents of theshipment have been checked mechanically and electrically.A procedure forchecking electrical performance is given under“Operator’s Check” onpage9 (also see“Performance Tests” on page12). If the contents of theshipment are incomplete, if there is mechanical damage or defect, or if theinstrument does not pass the electrical performance test, notify the nearestAgilent Technologies office. Keep the shipping materials for the carrier'sinspection.Mating Connectors Mating RF input and output connectors used with the attenuators should be:•Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Type BNC•Option 001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Type-N•Option 005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Type TNCFor the 355E and 355F, the solenoid drive connector plug is 7-pin maleconnector (1251-1037).Operating Environment The operating environment of the instrument should be within the following limitations:•Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0˚ to +55 ˚C •Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<95% relative •Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<4,570 m (15,000 ft)Storage and Shipment EnvironmentThe instrument should be stored in a clean,dry environment.The followingenvironmental limitations apply to both storage and shipment:•Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−40˚ C to +75 ˚C•Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .< 95% relative•Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .< 7,620 m (25,000 ft)Original PackagingContainers and materials identical to original packaging are available fromAgilent Technologies. If the instrument is being returned to AgilentTechnologies, attach a tag indicating the type of service required, returnaddress, model number, and serial number. Also, mark the containerFRAGILE to assure careful handling. In any correspondence, refer to theinstrument by model number and full serial number.Operating InstructionsOperating InstructionsCAUTION Do not apply RF power greater than 0.5W average, or 2450W peak with amaximum pulse width of 200 s. If these limits are e xceeded, the attenuatormay be damaged.Either RF connector may be used as the input or output connector,except inthe case of the355D/F driven from a low impedance source.This is becausethe leaf switch (Figures 1 and 2) may be closed before the microswitchopens when the dial is switched from 50 dB to 60 dB. Should this occur, amomentary short is placed across the connector, inviting damage to eitherthe microswitch or the signal source. Therefore, if the signal source issubject to damage by a short,use the rear most connector for the input.(Thedial or solenoid connector is at the front of the attenuator.) This pads themomentary short with 50 dB of isolation. For the 355E and 355F, wire thesolenoid drive plug supplied using Figure 3 as a wiring guide. Anun-energized attenuator solenoid section is 0 dB. Apply +1 5 to +18 Vdc(with respect to pin H) to energize an attenuator solenoid. A programmingtable is also given in Figure 3.Operator’s Check This section describes the procedures for the operator to make a quick checkof the attenuator prior to use or if a failure is suspected.NOTE Troubleshooting consists of performing the following Operator's Check. Ifthe instrument does not perform within limits, return the instrument to thenearest Agilent Technologies office.DescriptionThe attenuator is driven from a 50-ohm signal source at 1 kHz. The outputlevel from the attenuator is detected by a narrow-bandwidth voltmeter (thatis,the SWR meter).The attenuator and detector range switches are steppedtogether and the variations in level noted. This verifies that each attenuatorsection is being properly switched and checks the low frequency accuracy ofthe attenuator.NOTE The SWR Meter used in this check is calibrated for a square-law detectorand therefore the range changes and errors (read in dB) are twice thatindicated by the meter.Operating InstructionsQuick-Check Procedures1.Connect equipment as shown in Figure4,with the Attenuator set to0dBattenuation.2.Set Test Oscillator to 0.3 Vrms at 1 kHz.3.Set the SWR Meter input to XTAL IMPED LOW and the range to 2 dB(expanded) for 355D or 355F or to 10 dB (with 0 dB expand) for 355C or 355E. Adjust its bandwidth to the center of the adjustment range.Fine tune oscillator frequency to obtain the maximum meter indication.4.Set attenuator and SWR meter range switch as listed in Figure 3, andverify that the SWR meter indicates within the limits shown.Figure 4 Operator’s Check SchematicOperating Instructions Table 3Operator’s ChecksOperating InstructionsPerformance Tests The attenuator can be tested to the accuracy of the specifications in Table1with an Automatic Network Analyzer or equivalent equipment of suitableaccuracy.If an Automatic Network Analyzer is available,test the attenuatorusing the procedures in the analyzer's operating manual. The 355E and355F attenuators must be programmed by a suitable circuit to provide thevarious values of attenuation (see Figure 3).AdjustmentsThe attenuators have no internal adjustments and should not be opened. Ifdefective, the attenuator should be returned to the nearest AgilentTechnologies office for repair.CAUTION The solenoids in the 355E and 355F have been precisely adjusted at thefactory. No attempt should be made to replace them except by factoryapproved service representatives. The operation of the attenuators will beunreliable if plungers are not kept with their proper solenoids. Do notinterchange or "swap" them.12VHF Attenuators Operating and Service ManualReplaceable PartsReplaceable PartsTable4 lists the replaceable parts which are the only parts that can bereplaced without access to the interior of the attenuator. For any partsneeding replacement that are not listed in Table4, return the instrument toAgilent Technologies.CAUTION Due to special fixtures necessary for assembly, do NOT attempt to replaceany parts not listed in Table4. If the instrument is opened, the warranty isvoid.Table 4Replaceable PartsDescription Part Number Quantity355CGlide (feet)0403-00264Dial Assembly0370-30701Dial Assembly (Option 003)00355-000011355DGlide (feet)0403-00264Dial Assembly0370-30711Dial Assembly (Option 003)00355-000021355E and FGlide (feet)0403-00264Connector (7-pin, male)1251-10371VHF Attenuators Operating and Service Manual13。