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target="_blank" class="relatedlink">数码</a>相机的时候往往很在意像素数,其实除了这个”数”之外,还有很多(更)重要的指标甚至材质需要考虑的.</font></font></font></div><div align="left"><font color="#333333"><font face="宋体"><font style="font-size:9pt"> 在可扩展性、支持的<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>标准数量、测试精度、动态范围和解调带宽等方面，这些参数都很重要。未来的基站可能向双模和多模演进，很多手机都已经具备多模功能，如GSM和WCDMA双模手机，如果仪器支持的通信标准多，那么需采购仪器的品种和数量就大大减少。另外，随着3G、LTE等技术的出现，对仪表提出了更高的要求，高测试精度、大动态范围和大解调带宽的仪器非常受欢迎。移动通信技术发展很快，目前中国还没有大量商用3G，而LTE，作为WCDMA和TD-SCDMA的后续技术，已经快推出原型机了。网络运营商可能会加快新的技术的引入，这对基站和终端生产厂商确实是挑战：他们现在购买的测试仪器必须具备很好的扩展性，能方便地升级到未来技术，这样才能更大限度保护厂商的投资。</font></font></font></div><div align="left"><font color="#333333"><font face="宋体"><font style="font-size:9pt"> 比如，罗德与施瓦茨公司的信号源、信号分析仪和手机综合测试仪都支持几乎所有的通信标准，并在设计上考虑到了未来几年的测试需要(常见的需求是解调带宽)，对于新的通信标准，一般只需升级<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a>就可以实现。</font></font></font></div><div align="left"><font color="#333333"><font face="宋体"><font style="font-size:9pt"> 另外，示波器的带宽、采样率等都是示波器的常见参数。示波器带宽由于制造与研发技术的发展，使示波器带宽能够得到修正和补偿。但这些修正和补偿未尝都是好事一桩，有些客户并不希望这些技术带入到测试中去，他们更需要原始的测试数据，比如雷达实验。目前泰克在1G～2G全系列示波器家族中，提供纯硬件的示波器，示波器带宽是最真实的。泰克的前端技术可以保证将示波器的硬件前置放大器做的足够好。采样率是ADC的指标。捕获率参数反映的是一个内存管理的(是否能够在保存的信号中找到所需的信号)的概念。泰克采用的是分段式管理，在信号跳变时保存信息。包括Inspector等方法。</font></font></font></div><div align="left"><font color="#333333"><font face="宋体"><font style="font-size:9pt"> 以上介绍的就是选择测试仪器的几个重要指标，希望对您能有所帮助。</font></font></font></div><div align="left"><font face="宋体"><font style="font-size:10.5pt"> </font></font></div><font face="宋体"><font style="font-size:10.5pt"><div align="left">以上信息由西安安泰测试设备有限公司整理，希望对您能有所帮助。西安安泰测试设备有限公司是一家专注于<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>测试及工业测试领域仪器销售与仪器维修的专业公司。为客户提供“丰富的测试产品选择、完整的系统测试解决方案、专业的测试软件开发、全面的技术支持及售后服务”。目前公司主要进行电子测试仪器的销售及维修，自研产品的开发，已经成为西北地区规模最大的仪器综合服务商之一。</div><br /> <div align="left"> 测试仪器维修事业部拥有多名丰富维修经验的高级工程师，能够完成各种测试仪器与测试系统的芯片级维修。我们提供免费样机试用，免费专业工程师培训，免费测试技术交流。 <br /> 我们秉承全心全意为客户服务的原则，以合理的价格，让用户获得满意，<br /> 公司优势<br /> • 西北唯一能够进行测试仪器芯片件及维修的专业公司帮助客户降低维修成本。 <br /> • 西北地区专业维修测试仪器，修复的仪器全部经过校准，为您提供最高质量的仪器维修服务。 <br /> • 西北地区首家具备出具中华人民共和国修理计量器具许可证的仪器维修公司。 <br /> • 专业的检测维修手段，打破国外厂家对高端仪器维修垄断，终结国外厂家维修的暴利时代。</div><br /> <div align="left">咨询电话：029-88353093</div><div align="left">网站：www.agitek.com.cn</div><br /> <br /> <br /> </font></font></td></tr></table> <div class="ptg mbm mtn"> <a title="测试仪器" href="misc.php?mod=tag&id=1290" target="_blank">测试仪器</a></div> </div> <div id="comment_1180135" class="cm"> </div> <div id="post_rate_div_1180135"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=293563&formhash=c82fc7ae" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" 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