【产品】10000计数显示和4位分辨率的手持式数字万用表U1242B，直流电压精度达到0.09%

时间： 2018-01-30 来源：KEYSIGHT（世强编辑整理） 作者：杯中的清泉

技术问答

U1242B是KEYSIGHT公司新推出的一款10000计数显示和4位分辨率的手持式数字万用表，基本直流电压精度达到0.09%，具备真有效值交流测量同时在更宽的测量范围检查更多的参数。屏幕的可调背光灯帮助用户在较弱光效条件下完成测量任务而不会影响电池寿命，电池工作时间持续长达300小时，基本功能包括ACV、DCV、ACI、DCI、电阻、频率、二极管和导通测试，兼备电容、温度和最大最小记录等先进测量功能，该款手持式多用表适合技术人员或工业测试工程师自信而高效地执行测量工作，支持在复杂恶劣的环境下手持测量。

U1242B数字万用表非常易于操作使用，可调背光具有两种强度，支持手动数据记录，用户只需简单按下按钮就能利用仪表的内置开关计数器、谐波比、双温和温差测量功能简化设备的维护工作。其外壳采用铸模机壳，非常坚固耐用，符合CAT III 1000V和CAT IV 600V过电压保护的安全指标，已通过CE和CSA标准认证，因此测量具有很高的操作安全性，更可贵的是该款万用表附带有校准证书和测试报告，配备的全套附件无需另外付费就可提供完善的测量服务。

U1242B数字万用表测量直流电压的量程为0.1mV~1000V，交流电压量程为50mV~1000V，测量电阻范围达到0.1Ω~100MΩ，可测电容的量程为0.1nF~10mF，ACμA测量为50μA~10mA，可测信号频率范围为1Hz至200kHz，ACmA和ACA测量的范围分别达到5mA~440mA和0.5A~10A，可测量的温度范围甚广可达-40至1000°C，因此无论用户需要快速测量电压/电流、检查电源谐波、检测开关系统中的毛刺还是监测温差，该款手持式万用表均可完全胜任，同时尽早发现交流电源中的谐波成分，并测量因谐波引起的失真百分比，从而精确显示输入交变电压的谐波比，有助于减少错误读数以提高电学特性测量的真实性和测量效率。

图1 U1242B手持式多用表同时支持在工作台站立显示

U1242B手持式万用表可连续测量高达440mA的电流，如果测得的信号在440mA~1100mA范围内保持最大30秒，指定精度只增加0.2%的附加误差，在长时间测量>440mA的电流后再进行低电流测量时需有两倍测量时间的冷却时间，以保证仪器恢复到低电流的测量精度。U1242B手持式数字万用表具有过载保护功能，<0.3A短路电流的电路为1000VRMS，在低于50mV以及正向偏置二极管或半导体结的读数在0.3V至0.8V之间时内部蜂鸣器将会发生报警。用户使用为该数字万用表设计的4毫米尖探头探测近接点时可消除因电弧闪光给人体造成的伤害，工作在高电流的测试环境下内置的30kA高能量保险丝可有效避免潜在的熔断器故障，全方位地保证精确测量功能的安全执行。

U1242B手持式数字万用表采用小尺寸的封装，产品占用的空间小非常便于携带和手持，尺寸规格(H×W×D)为193.8mm×92.2mm×58.0mm，带电池净重450g，电磁兼容EMC通过了CISPR11:1990/EN55011:1990、ICES-001:2004和AS/NZS CISPR11:2004认证，主单元保修3年，标配附件保修3个月，并提供一年的仪器校准周期，让用户没有后顾之忧。

U1242B手持式数字万用表的特点及优势：

· 10000计数显示和4位分辨率的手持式数字万用表，基本直流电压精度达到0.09%；

· 屏幕的可调背光灯帮助用户在较弱光效条件下完成测量任务而不会影响电池寿命，电池工作时间持续长达300小时；

· 基本功能包括ACV、DCV、ACI、DCI、电阻、频率、二极管和导通测试，兼备电容、温度和最大最小记录等先进测量功能；

· 支持手动数据记录，用户只需简单按下按钮就能利用仪表的内置开关计数器、谐波比、双温和温差测量功能简化设备的维护工作；

· 符合CAT III 1000V和CAT IV 600V过电压保护的安全指标，已通过CE和CSA标准认证；

· 快速测量电压/电流、检查电源谐波、检测开关系统中的毛刺还是监测温差，手持式万用表均可完全胜任；

· 数字万用表具有过载保护功能，<0.3A短路电流的电路为1000VRMS，在低于50mV以及正向偏置二极管或半导体结的读数在0.3V至0.8V之间时内部蜂鸣器将会发生报警；

· 4毫米尖探头探测近接点时可消除因电弧闪光给人体造成的伤害；

· 数字万用表采用小尺寸的封装，产品占用的空间小非常便于携带和手持，尺寸规格(H×W×D)为193.8mm×92.2mm×58.0mm，带电池净重450g；

U1242B手持式数字万用表的典型应用：

· 开关功率器件的电学特性测量

· 直流-直流(DC-DC)转换器、D类放大器的电学特性测量

· 数字系统设计的电学特性测量

· 其他通用电路系统的电学特性测量

U1242B手持式数字万用表的外观形状：

技术顾问：风九

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Matrix Lv3. 高级工程师 2018-06-28

红色屏幕……
Elike Lv6. 高级专家 2018-05-02

这个配色亮瞎眼
一头笨牛 Lv8. 研究员 2018-01-30

学习

没有更多评论了

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U1250 Series Handheld Digital Multimeters DATA SHEET

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数据手册 - KEYSIGHT - October 27,2023 PDF 英文下载查看更多版本

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目录- 示波器和探头数字万用表数字采集和开关频率计数器、函数和任意波形发生器电源射频仪表

型号- U1272A,34460A,34133A,53140,N5742A,N5766A,E4980ALU-050,N2919A,N576XA,N5439A,6644A,661XC-220,54600S,34905A,3446MEMU,3000X,U2700,N674XB,34132A,34132B,53150,N5743A,53151,N5767A,661XC-OL2,664XA,3024T,N2918A,6621A,3000T,53152,6645A,N2918B,N9310A-1CM,661XC-230,U1273A,34904A,U1620,E364XA-1CM,N6746B,3000X,DSOXGPIB,N8948A,1000,34131A,DSOX4AUTO,N5744A,N5768A,N2917B,6622A,N3300A,8120-4383,TPS://WWW.SEKORM.COM/WEB/SEARCH/KEYWORDN2801A,34903A,663XB-0B3,DSOX4SENSOR,N8900A,66102A,N6701A,E5387A,66000,U1271A,N8949A,66002A 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X,N2738A,DSOX3ADVMATH,6551,N9340B-ABJ,8120-5490,8121-1330,N9340B-ABA,2000X,8121-1331,655XA,8120-8767,53100,8120-8768,34941A,6555A,34832A,663XB-120,N2822A,N9340B-AB2,3000TX,33500B,N5,N9330B-ADP,1130A,U2600A,N9340B-PA3,DSOX3EMBD,200,6641A,669XA-0B3,1131.,N2821A,DSOX3MASK,4000 X,5000,N3300,AC6800,6642A,34830A,N7900,N2820A,N2759A,33522A,33522B,1180CZ,663XB-100,DSOX4COMP,N9310A-1T,N9340B-TG3,6643A,N2867A,N2843A,U1401B,N9340B-INM,AC6804A,DSOX3AUDIO,34840B,DSOX4FLEX,669XA-908,669XA-909,N2733A,N2866B,N2733B,3458A-002,DSOX2EMBD,3458A-001,E2695A,DSO1012A,34972A,N9310A-1TC,60001,N2889A,N2756A,6063B-020,N2732A,AC6802A,6000A,U1270,6000X,DSO1014A,U1880A,N9340B-TAD,90000 X,663XB-020,N2779A,N2888A,6000L,DSOX3COMP,E2697A,N2863B,AC6803A,U2751A,34970A,L4411A,6000X,34401A,N9330B-202,N9330B-203,U1881A,N9330B-201,N2778A,N2887A,54826,8120-1689,7000,N2862B,E4980A-710,668XA-208,54830,U1250,DSOXEDK,6571A,681XB-208,N875XA,N2777A,6680A,N8756A,N8732A,N8950A,TPS://WWW.SEKORM.COM/WEB/SEARCH/KEYWORD1163A,E3610-17A,AC6801A,DSOX3FLEX,681XB-200,10070D,N2885A,N2752A,N5440A,E3451B,81180A,U2531A,54600,6572A,E4980AL-100,6681A,N8757A,N2776A,U3402A,N8733A,53147A,8120-2956,N8951A,681XB-230,N2884A,N2751A,N7971A,DSO1102B,6641A-45A,DSOX2COMP,64997A,6682A,U1230,6573A,U3401A,N6773A,B2980A,N8754A,N7970A,N2750A,DCA-J 86100D,53230A,6813B-019,N5442A,6631BA,8120,6574A,6683A,54620,U1240,N8755A,5484X,N8731A,N2797A,N5770A,N2882A,N873XA,N5443A,34420A,N7973A,10073D,DSOXDVM,E2678A,80000,N28,N6775A,N8736A,8120-2104,N6751A,N8954A,DSOX4PWR,N2881A,E2655C,6063B,N2796A,N5444A,P66321B,N5771A,6812B,N7972A,10074D,E2679A,N5468A,N9340B-XDM,6811B,11053A,9000X,N8737A,N6774A,DSOX3MSO,N8955A,E3634A,N2771B,N2880A,DSOXPERFMSO,N6450,N2795A,N5772A,N5469A,9000,6813B,N5445A,U2356A,8121-6203,N7951A,N6459,N6753A,N8758A,U1242B,N6971A,N8734A,33220A,N8952A,N6777A,681XB-026,53181A,681XB-020,U2331A,661XC-760,10072A,N7950A,60XX-0B3,U2355A,N7974A,DSOX4AUDIO,34465A,E5813A,34138A,E4356A-909,E4356A-908,U1461A,N8759A,N6752A,N6970A,N8735A,N677XB,N6776A,N2793A,N9340B-IBC,U1591A,11058A,U2354A,N5750A,N7953A,N7977A,N5447A,N5423A,E5810B,E5810A,N6731B,N6973A,N2914,DSOX4APPBNDL,661XC-0B3,E3631A,N6755A,N2792A,DSOX3VID,E2675A,DSOX2MASKM,34330A,U2353A,N7976A,E4980AL,N5751A,N9340B-1TC,N5448A,N5424A,N7952A,34136A,DSOX2SEM,N3331A,N6972A,U1241B,E3630A,DSOX4AERO,34908A,N6754A,E2676A,N2791A,N9330B-1TC,N8738A,10075A,U2352A,N5752A,N5425A,U1452AT,3000T X,N577XA,N5449A,DSOXT3DVMCTR,7000B,TPS://WWW.SEKORM.COM/WEB/SEARCH/KEYWORD10076C\,3000 X,U2700 USB,U1177A,N6951A,E363XA-1CM,N2836A-68701,34907A,E3633A,N6733B,E2677A,N9310A-001,N2790A,N675XA,66000A-909,E4980A-301,N8739A,66000A-908,N7954A,10076B,34134A,10076C,U2351A,N5426A,34461A,66319B,8120-4753,N6732B,N6950A,N8957A,E3632A,34906A,N6756A,N6974A,66319D,N9330B-BCG,B2911A,N2111A,8120-5570,N9340B,E2614A,1161A,DSOX3AERO,6632B,8120-5572,N1022B,8120-5573,33250A,54830S,8120-5337,N6735B,N6977A,N6711A,N6953A,661XC-100,1162A,E2615A,6633B,34945EXT,N9330B-BAT,3012T,8120-5342,N6710B,66002A,N6976A,90000Z,N6734B,N6952A,DSOX4WAVEGEN2,90000X,U8031A,663XB-1CM,90000Q,663XB-1CP,34470A,E2616A,N575XA,6634B,8120-6204,661XC-120,90000A,66332A,6651A-55,DSOX2WAVEGEN,34939A,N673XB,1132,1131,82351A,1160A,N2819A,6611C,3034T,N5406A,8120-8871,66000A-0L2,34938A,N6736B,N6954A,N6712A,90000,E5396A,N9320B,6612C,N2818A,E

选型指南 - KEYSIGHT - 2015 - 2015年06月10日 PDF 中文下载

KEYSIGHT数字万用表选型表

KEYSIGHT数字万用表选型，手持式数字万用表、USB 模块化数字万用表、手持式钳形表等，基本 1 年 DCV 精度0.00%-0.5%。

产品型号	品类	描述	Digits of Resolution	基本 1 年 DCV 精度	连通性	测量功能
34470A	数字万用表	数字万用表，七位半，Truevolt DMM	7 ½	0.0016%	LAN,USB,GPIB (optional)	DCV and ACV,DCI and ACI,2- and 4-wire Resistance,Frequency,Capacitance,Diode test,Continuity test,Temperature

选型表 - KEYSIGHT 立即选型

Keysight（是德科技）汽车测试产品选型指南（英文）

目录- Increasing Speed, Safety, and Reliability of In-Vehicle Communications Networks Data Acquisition for Accurate Automotive System Analysis Taming the Hostile RF World of Today’s Vehicles Managing Power in a Harsh Automotive Electrical Environment EMI Pre-Compliance Testing for Automotive Designs Handheld Instruments for Accurate Portable Automotive Testing General Bench Test and Accessories Test Automation with PathWave BenchVue Software

型号- N7026A,DAQ970A,4000 X,N2790A,N6705C,N5166B CXG,N6700 SERIES,3000T X-SERIES,N6700,3000T X,34980A,S-SERIES,6000 X,N9000B CXA,N7900,4000 X-SERIES,MSOX4154A,6000 X-SERIES,N7900 SERIES

选型指南 - KEYSIGHT - October 31, 2022 PDF 英文下载

Keysight（是德科技）数字万用表选型指南（详细版）

目录- Digital Multimeter Index Accessories Compatibility Chart Linking up your instruments to the PC BenchVue Software Handheld meter logger software GPIB and instrument

型号- U1191A,U1272A,34460A,34133A,34420A,34161A,U1210,10833F,10833G,34307A,10833A,10833B,10833C,10833D,U1232A,U1583B,3458A,U1163A,3446MEMU,U1175A,U1595A,3446SECU,U1180A,3446DIGU,U1192A,U8202A,34398A,U2741A,34172B,U1280 SERIES,34104A,U1176A,U1273A,U1164A,U1233A,34171B,3446ACCU,U1282A,U1173B,U1161A,U1173A,34470A,34131A,U1270,U1240B SERIES,U1240C SERIES,U1117A,E3600A-100,34103A,U1242C,U1185A,U1242B,U1169A,U1190 SERIES,U1271A,U1162A,3446LANU,U1230 SERIES,3446GPBU,U1280,11059A,34194A,34465A,34102A,34138A,U3606B,U1231A,U1174A,U1594A,U1186A,U1270 SERIES,U1240C,U1183A,U1240B,U5404A,U1171A,3445MEMU,82350A,11062A,U1250,34137A,U1252B,U1115A,U1212A,U1179A,U1273AX,Y1133A,82357B,U1172A,U1241C,E2308A,U1184A,U1281A,U1580A,34330A,34136A,U1241B,U1253B,M9181A,U1213A,U1168B,34191A,U1181A,U1193A,U1190,U8201A,34450A,11060A,U1230,U1210 SERIES,U1177A,M9182A,34190A,U1194A,U1251B,U1170A,U1182A,34134A,U1250 SERIES,34162A,34461A,3445GPBU,34308A,U1586B,M9183A,U1211A,U1178A

选型指南 - KEYSIGHT - August 18, 2022 PDF 英文下载