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Fluke 8508A参考级数字多用表参考标准级的准确度和稳定性，功能众多、易于使用的解决方案Fluke—计量学的工具计量学定义准确度（测量准确度）表示测量结果与被测量真值之间的一致程度的数字，或者表示一台仪器以多小的不确定度进行测量的能力。
计量学家喜欢使用测量不确定度（例如，±12ppm的不确定度），而不喜欢使用准确度（例如，准确到99.9988%）。
置信水平在置信区间上正态曲线之下的面积所占的百分数。
当置信区间的范围为从-2倍标准偏差到+2倍标准偏差时，就得到了95%的置信水平。
置信区间正态分布曲线下的一个数值范围，在此范围内具有规定的置信水平。
该数值范围通常从曲线的中心，以标准偏差为单位，对称的延伸到某一极限值，这通常为正、负几个标准偏差。
2工程师们都知道三边的物体是可能得到的最坚固的形状。
我们知道三条腿的凳子是最安全的装置之一，它可以放在任何表面上。
因此看来很清楚，一个三元素的基础是一个高度有效的平台。
8508A的设计就遵循了这个原则，并涉及到三个关键的性能方面：准确度和稳定性、功能多样性以及易于使用。
就象三角形或三条腿的凳子那样，8508A聚焦于这三个关键的问题，成为当今最坚固的、最可靠的和最可信赖的测量仪器。
准确度和稳定性8508A具有8位半的分辨率、优异的线性度和非凡的低噪声和稳定性。
在当今市场上现有的各种产品中它能够给出无可争议的最准确的测量结果。
但是这只是问题的一个方面。
测量结果必须在今天、明天、下一周，甚至明年都是可重复的。
这就是为什么必须把稳定性放在和准确度一样的优先地位。
8508A参考数字多用表365天的稳定性低达2.7ppm，24小时的稳定性为0.5ppm，使我们确信今天进行的测量工作结果和昨天或者去年进行的结果会一样好。
全模拟式设计在当今一切都在数字化的时代，时髦的做法是尽可能早对信号进行模数转换，然后再用数字的方法来修正、调节或处理这些数据以校正存在的问题并得到“正确”的结果。
®8808A数字万用表用户手册2007年7月© 2007 Fluke Corporation，保留所有权利。
所有的产品名称均为相应所有人的商标。
.LIMITED WARRANTY AND LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption.Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs ofrepair/replacement parts when product purchased in one country is submitted for repair in another country.Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or handling, including overvoltage failures caused by use outside the product’s specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.Fluke CorporationP.O. Box 9090 Everett, WA 98206-9090 U.S.A. Fluke Europe B.V. P.O. Box 1186 5602 BD Eindhoven The Netherlands11/99To register your product online, visit 有限保证和有限责任每台Fluke的产品在正常使用和维护的情况下保证没有材料和工艺上的缺陷。
Fluke8808A RS232通信方法
By：lecom/乐康健康1．硬件准备：RS232USB转串口线(ZE533C)，由于万用表的输出是公头，RS232USB的也是公头，于是用两个母头焊线转换了一下，注意RX,TX交换一下（对应万用表上是PIN2/PIN3/PIN5）,PIN5-----GND
2．测试连通性：按下前面板的shift键，再按下“BAUD”,设定万用表的串口工作模式。
Echo 是回显模式，可以测试输入的命令是否正确。
串口设定完成之后，打开串口调试工具，输入字符“*IDN?”（“”引号不要一起发送）,选择串口助手选字符模式发送，然后窗口返回显示“FLUKE,8808A,nnnnnnn,n.n Dn.n”，串口测试ok。
串口助手显示: “?>” -------------- 未知的命令
“!>” -------------- 命令执行错误
==> ------------- 收到命令，正常工作
有时候连接不上：反复开机测试设定baud/trigger 设定
3．Trigger模式设定：按shift键，再按TRIG键，选择模式4或者5（5是延时触发），在后面板的UART PIN9 输入+5V电压上升沿，则触发测量一次
4．在PC机串口助手输入“MEAS1?”命令后，会实时读到测到的数据。
需要连续发送则设定串口调试助手为自动发送模式，串口助手选择输出保存到文件，可以连续采集数据。
8508A型参考级81/2位数字多用表操作简要说明福禄克公司北京办事处有限保证和有限责任每台福禄克的产品在正常使用和维护的情况下保证没有材料和工艺上的缺陷。
产品的保证期为一年，从发运之日起计算。
零件、产品修理和维护的保证期为90天。
此项保证的对象仅为原始购买者或者福禄克授权代理商的最终使用客户，并且不适用于保险丝、普通电池或者福禄克认为由于意外的或不正常的工作或管理状况而错误使用、经过改动、疏忽管理、受到污染或损坏的产品。
福禄克保证软件将按照其功能技术指标牢靠地工作90天，并已经正确地记录在无缺陷的介质上。
福禄克不保证软件没有错误或工作中无中断。
福禄克授权代理商应当只将此种对新的和未使用过的产品的保证延伸到最终使用客户，但无权代表福禄克做出更高的或不同的保证条件。
只有从福禄克授权的销售渠道购买的产品或者当购买者已经支付了适当的国际价格时才能获得这种保证支持。
当从一个国家购买的产品送到另一个国家进行修理时，福禄克保留向购买者开具修理/更换零件进口费用发票的权利。
福禄克的保证责任是有限的，对于在保证期之内退回到福禄克授权的维修中心的有缺陷的产品，福禄克可以选择退还购买款项、免费修理或更换产品。
为获得保修，请与您最近的福禄克授权维修中心联系以得到返修授权信息。
然后将该产品发送到该维修中心，提供故障说明、并付邮资和保险费（FOB目的地）。
福禄克不承担运输中损坏的风险。
保修之后，该产品将返还给购买者，并付运费（FOB目的地）。
如果福禄克认定故障是由于疏忽管理、错误使用、受到污染、经过改动、意外的或不正常的工作或管理状况，包括因超出产品规定的额定值使用而引起的过电压故障，或者正常的磨损和机械部件的破损而引起，福禄克将提供估计的修理费用并在得到授权之后才开始维修工作。
修理之后，该产品将返还给购买者，并付运费。
购买者则要支付修理费用和返程的运输费用（FOB发运点）。
这种保证是购买者唯一的和专有的补救方法，并且可代替所有其它的保证条件、表述或默许的条款，包括但不限于任何默许的保证条件或者为某种特定目的的商品性或适应性。
®8808A数字万用表用户手册2007年7月© 2007 Fluke Corporation，保留所有权利。
所有的产品名称均为相应所有人的商标。
.LIMITED WARRANTY AND LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption.Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs ofrepair/replacement parts when product purchased in one country is submitted for repair in another country.Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or handling, including overvoltage failures caused by use outside the product’s specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.Fluke CorporationP.O. Box 9090 Everett, WA 98206-9090 U.S.A. Fluke Europe B.V. P.O. Box 1186 5602 BD Eindhoven The Netherlands11/99To register your product online, visit 有限保证和有限责任每台Fluke的产品在正常使用和维护的情况下保证没有材料和工艺上的缺陷。
产品的保证期为一年，从发运之日起计算。
零件、产品修理和维护的保证期为90天。
此项保证的对象仅为原始购买者或者Fluke授权代理商的最终使用客户，并且不适用于保险丝、普通电池或者Fluke认为由于意外的或不正常的工作或管理状况而错误使用、经过改动、疏忽管理、受到污染或损坏的产品。
Fluke保证软件将按照其功能技术指标牢靠地工作90天，并已经正确地记录在无缺陷的介质上。
Fluke不保证软件没有错误或工作中无中断。
Fluke授权代理商应当只将此种对新的和未使用过的产品的保证延伸到最终使用客户，但无权代表Fluke 做出更高的或不同的保证条件。
只有从Fluke授权的销售渠道购买的产品或者当购买者已经支付了适当的国际价格时才能获得这种保证支持。
当从一个国家购买的产品送到另一个国家进行修理时，Fluke保留向购买者开具发票收取修理/更换零件进口费用的权利。
Fluke的保证责任是有限的，对于在保证期之内退回到Fluke授权的维修中心的有缺陷的产品， Fluke可以选择退还购买款项、免费修理或更换产品。
为获得保修，请与您最近的Fluke授权维修中心联系以得到返修授权信息。
然后将该产品发送到该维修中心，提供故障说明、并付邮资和保险费（FOB目的地）。
Fluke不承担运输中损坏的风险。
保修之后，该产品将返还给购买者，并付运费（FOB目的地）。
如果Fluke认定故障是由于疏忽管理、错误使用、受到污染、经过改动、意外的或不正常的工作或管理状况，包括因超出产品规定的额定值使用而引起的过电压故障，或者正常的磨损和机械部件的破损而引起，Fluke将提供估计的修理费用并在得到授权之后才开始维修工作。
