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Agilent 34450A Multimeter5.5 Digit Dual Display, Benchtop DMMData Sheet► Fast reading speed of up to 190 readings/sec ► 0.015% DCV accuracy► Multiple connectivity options – USB 2.0, Serial Interface (RS-232), and GPIB► 11 measurement functions; DC voltage & current, True RMS AC voltage & current, 2- and 4-wire resistance, frequency, continuity, diode test, capacitance, and temperature ► Ultra-bright OLED with dual display capability► Up to 50,000 memory points for data logging and histogram function ► Built-in Histogram function► With Fluke 45 and Fluke 8808A code compatibilityAchieve throughput breakthroughTurbo charge your production line with the 34450A digital multimeter. With its fast speed of up to 190 readings per second you can now increase your manufacturing throughput tremendously. Get highly accurate, repeatable and trustworthy measurements with the 0.015% DCV accuracy designed to meet generalindustrial and educational needs.Figure 1. Bright OLED display for excellent viewing experience when making measurements.►FeaturesIntuitive andMultipurpose deviceThe 34450A is an intuitive and easy to use tool that provides a wide range of measurement functions such as DC voltage, DC current, True RMS AC voltage and AC current, 2-wire and 4 wire resistance, frequency, diode test, continuity, capacitance and temperature. Simplify your day-to-day task with up to 50,000 memory points, allowing you to capture and log up to 14 hours of data. Built-in with histogram and basic statistical functions, you can now do simple data analysis within the unit itself. With its ultra-bright OLED dualdisplay, different measurements can be performed ensuring you get the right readings at first glance.More flexibility with multiple connectivityMultiple connectivity options such as USB 2.0, Serial Interface (RS-232) and GPIB port provides greater flexibility to connect DMM to a PC for data access and retrieval for analysis. With the option to connect to a PC, this enables the 34450A to work with Agilent Connectivity software and can be controlled remotely via SCPI commands or Command Expert. The IVI-COM driver is also included to ensure an easy integration with different programming environments.Easy migrationUpgrading your obsoleted DMM is made easy with minimal changes to test program. To ensure both forward and backward compatibility, the 34450A includes SCPI, Fluke 45 or Fluke 8808A commands. Experience a quick, easy and painless migration as it allows you to quickly transfer your existing test programs on theAgilent 34450A.Up to 50,000 memory points for data logging and histogram functionMultiple choices of connectivity and trigger in/out capability for production data analysisKensington lock to better secure the unitFast 190 readings/sec and 0.015% DCV accuracy to help you achieve throughput breakthrough5.5 digit OLED dual display allows clear and quick view on measurements11 measurement functions; DC voltage & current, True RMS AC voltage & current, frequency, continuity, diode test, capacitance, and temperatureBuilt-in Math functionsInput terminalsTable 1. DC Accuracy ± (% of reading + % of range)Notes on Specifications:1. Specifications are for 90 minutes warm-up time, slow mode and calibration temperature within 18 °C - 28 °C.2. 20% over range on all ranges except 1000 VDC and 10 A range.3. Specifications are for 4 wire Ω or 2-wire Ω using NULL function. If without NULL function, add 0.2 Ω additional error.4. Continuity thresholds is fixed at less than 10Ω5.Specifications are for the voltage measured at the input terminals only.Table 2. AC Accuracy ± (% of reading + % of range)Notes on Specifications:1. Specifications are for 90 minutes warm-up time, slow mode and calibration temperature within 18 °C - 28 °C.2. 20% over range on all ranges except ACV 750 V and ACI 10 A.3. Specifications are for sine wave inputs more than the 5% of range except 750 V range. Input signal must be more than 50 Vrms for 750 V range. Maximum crest factor of 3 at full scale. Input impedance is 1 MΩ in parallel with capacitance less than 120 pF, AC couple with up to 400 DCV.4. Additional error to be added as frequency > 30kHz and signal input < 10% of range. 30kHz ~ 100kHz: 0.003% of full scale per kHz.5. For 10 A ranges, the frequency is verified for less than 5 kHz.6. For input < 200V rms.7. For input < 300V rms.Table 3. Frequency Accuracy ± (% of reading + 3 counts)1Notes on Specifications:1. Specifications are for 90 minutes warm-up time, slow mode and calibration temperature within 18 °C - 28 °C.2. The frequency can be measured up to 1 MHz as 0.5 V signal to 100 mV / 1 V ranges.3. 10% of range to full scale input on all ranges except where noted. 100 mV range specifications are for full scale or greater inputs. For inputs from 10 mV to 100 mV, multiply total % of reading error by 10.4. 10% of range to full scale input on all ranges except where noted. 10 mA range specifications are for full scale or greater inputs. For inputs from 1 mA to 10 mA, multiply total % of reading error by 10.Table 4. Frequency resolution1.The frequency can be measured up to 1 MHz as 0.5 V signal to 100 mV / 1 V ranges.Temperature and Capacitance Specifications1Table 5 Temperature and Capacitance Accuracy ± (% of reading + % of range)Notes on Specifications:1. Specifications are for 90 minutes warm-up time, slow mode and calibration temperature within 18 °C - 28 °C.2. 20% over range on all ranges.Operating SpecificationsTable 6. Operating Specifications on single display (approximate)Notes on Specifications:1. Time to change from 2-wire resistance to this specified function and to take at least one reading using SCPI “FUNC” and “READ?” commands.2. Time to change from one range to the next higher range and to take at least one reading using SCPI “FUNC” and “READ?” commands.3. Time to automatically change one range and to take at least one reading using SCPI “CONF AUTO” and “READ?” commands.4. Number of measurements using SCPI “READ?”command when front panel display is off using “DISP OFF” command.5. Reading rate depends on signal frequency > = 20Hz.Supplemental Measurement SpecificationsTable 7 .Supplemental measurement specificationsTable 7 .Supplemental measurement specifications(continued)General Characteristics303.2 mm103.8 mStandard shipped accessories:• Test lead set • Power cord • USB interface cable • Quick Start Guide • Product Reference CD• Agilent IO Library Suite CD-ROMUpgradable Options:• 3445GPBU - GPIB connectivity upgrade• 3445MEMU - 50,000 memory points upgrade for data loggingDimensions1134138A Test Lead Set E2308A Thermistor Temperature Probe34191A 2U Dual Flange Kit34194A Dual Lock Link Kit82350B PCI High-Performance GPIB Interface Card82357B USB/GPIB Interface High-Speed USB 2.010833A/B/C/D/F/G GPIB Cable in various lengths (0.5 m, 1 m, 2 m, 4 m, 0.5 m, 6 m and 8 m)34190A Rackmount KitAgilent Optional Accessories:LAN eXtensions for Instruments puts the power of Ethernet and the Web inside your test systems. Agilent is a founding member of the LXI consor-tium.Agilent XXXXX Partnersw w w /find/xxxxxpartners Get the best of both worlds: Agilent’s measurement expertise and product breadth, combined with channel partner convenience.For more information on Agilent T echnologies’ products, applications or services, please contact your local Agilent office. The com-plete list is available at:/find/contactus Americas Canada (877) 894 4414 Brazil (11) 4197 3600Mexico 01800 5064 800 United States (800) 829 4444Asia Pacific Australia 1 800 629 485China 800 810 0189Hong Kong 800 938 693India 1 800 112 929Japan 0120 (421) 345Korea 080 769 0800Malaysia 1 800 888 848Singapore 180****8100Taiwan 0800 047 866Other AP Countries (65) 375 8100 Europe & Middle East Belgium 32 (0) 2 404 93 40 Denmark 45 45 80 12 15Finland 358 (0) 10 855 2100France 0825 010 700**0.125 €/minuteGermany 49 (0) 7031 464 6333 Ireland 1890 924 204Israel 972-3-9288-504/544Italy39 02 92 60 8484Netherlands 31 (0) 20 547 2111Spain 34 (91) 631 3300Sweden0200-88 22 55United Kingdom 44 (0) 118 927 6201For other unlisted countries:/find/contactusRevised: October 11, 2012Product specifications and descriptions in this document subject to change without notice.© Agilent Technologies, Inc. 2012Published in USA, October 15, 20125991-1133EN/find/34450AAgilent Advantage Services is committed to your success throughout your equip-ment’s lifetime. To keep you competitive, we continually invest in tools andprocesses that speed up calibration and repair and reduce your cost of ownership. You can also use Infoline Web Services to manage equipment and services more effectively. By sharing our measurement and service expertise, we help you create the products that change our world./quality/find/advantageservicesAdvancedTCA ® Extensions for Instrumentation and Test (AXIe) is an open standard that extends the AdvancedTCA for general purpose and semiconductor test. Agilent is a founding member of the AXIe consortium.PCI eXtensions for Instrumentation (PXI) modular instrumentationdelivers a rugged, PC-based high-per-formance measurement and automa-tion system.Quality Management SystemQuality Management Sys ISO 9001:2008DEKRA Certified /find/myagilent A personalized view into the information most relevant to you.myAgilentmy Agilent。
34970a电压量程34970A电压量程是指Keysight（原Agilent）公司生产的34970A数据采集/数据记录器的电压测量范围。
这款设备是一种高性能的多功能测试仪器，广泛应用于电子、通信、自动化等领域的测试和测量工作中。
它具有多通道、高精度、灵活配置等特点，能够满足各种不同的测试需求。
34970A电压量程的范围是从微伏级到伏特级，可以在不同的量程下测量不同范围的电压信号。
这款设备具有16个独立的测量通道，每个通道都可以单独配置为不同的电压量程。
通常情况下，34970A 电压量程的范围是从200微伏到1000伏特，可以满足大部分常见的电压测量需求。
34970A数据采集/数据记录器采用了先进的模拟前端设计和高分辨率的模数转换器，能够实现高精度的电压测量。
它还具有高速采样率和大容量的数据存储功能，可以快速准确地记录和分析电压信号。
除了电压测量功能，34970A还具有其他多种测量功能，如电流、电阻、频率、温度等。
它可以通过不同的模块进行扩展，以满足不同的测试需求。
这些模块包括了电压模块、电流模块、电阻模块、频率计数器模块、温度模块等。
34970A数据采集/数据记录器还具有便捷的操作界面和灵活的数据处理功能。
它可以通过前面板按钮、旋钮和液晶显示屏进行操作，也可以通过计算机进行远程控制。
在数据处理方面，它支持多种数据格式的导出和分析，可以方便地与其他软件进行数据交互和处理。
34970A电压量程广泛适用于各种电压测量场合，具有高精度、多功能、灵活配置等特点。
它是一款可靠、易用的测试仪器，可以提高测试效率，减少测试成本，提供准确可靠的测试结果。
无论是在实验室、生产线还是维修现场，34970A都是一款值得信赖的测试工具。
是德安捷伦Agilent U1253B手持式数字万用表
安捷伦是德科技U1253B数字万用表增加了20MHz频率计数器和可编程方波发生器，并且是世界上第一种OLED有机屏幕手持式数字万用表。
安捷伦U1253B是世界上第一种OLED有机屏幕手持式数字万用表，随机配备全套附件，无需另外付费，就能开始进行正确的测量。
Agilent U1253B数字万用表从任何观察角度都能看到正确的读数：无论是在运动中，还是在工作台上，室内观察就如同水晶一般的清晰，甚至在黑暗中。
是德安捷伦Agilent数字万用表型号规格
格信达科技专注于：电学测试、温度测量、无损检测及环境测量，配套电子焊台、测量工具、手动工具，以及进口机电之通讯器、编码器、传感器等产品的选型方案及供应。
致力于通过合理的渠道，为用户提供最佳的服务与最快的响应、最优的价格、最快的交货和放心保障。
安捷伦E4418B功率计介绍安捷伦E4418B是一款高精度的射频功率计，可用于测量射频信号的功率和功率密度，广泛应用于无线通信、雷达测量、微波炉等领域。
技术参数•测量范围：-70 dBm ~ +44 dBm•频率范围：100 kHz ~ 110 GHz•功率分辨率：0.001 dB•不确定度：0.21 dB•输入阻抗：50 Ω特点安捷伦E4418B功率计具有以下特点：高精度该功率计的不确定度仅为0.21 dB，可以提供高精度测量结果。
宽频率范围安捷伦E4418B功率计的频率范围覆盖100 kHz至110 GHz，适用于广泛的射频信号测量需求。
多种测量模式该功率计具有多种测量模式，包括平均功率模式、峰值功率模式和时间域功率模式，可以应对不同的测量需求。
易于操作安捷伦E4418B功率计具有直观的操作界面，可以进行快速方便的测量，并可通过USB接口与计算机进行数据传输和分析。
应用场景安捷伦E4418B功率计广泛应用于以下领域：无线通信该功率计可以用于测量各种无线信号的功率和功率密度，包括移动通信、卫星通信、无线电广播等领域。
雷达测量安捷伦E4418B功率计可以用于雷达系统中的功率测量、校准和故障诊断，提供高精度的测量结果。
微波炉该功率计可以用于微波炉的功率测量和功率调节，保证微波加热的效果和安全性。
使用说明使用安捷伦E4418B功率计需要注意以下事项：1.在使用前应仔细阅读使用手册，并按照说明进行操作。
2.在测量时应尽量避免将功率计暴露在射频信号下，以免对测量结果造成干扰。
3.使用时应保持功率计干净整洁，避免污染和损坏。
4.使用结束后应及时关闭功率计，并将其妥善保管。
结论安捷伦E4418B功率计是一款功能强大、精度高的射频功率计，广泛应用于无线通信、雷达测量等领域，并具有易于操作、多种测量模式等特点，使用时需要注意事项以保证测量结果的准确性。
The 2-in-1 that helps you travel light Rugged and tested tostringent standards More often than not, the calibration ofprocess control parts requires simultaneous measurements with a DMM. With theU1401A/U1401B, you can carry two tools in one—and calibrate while you measure. Slip the U1401A/U1401B in its sturdy carrying case and you’re ready to go.The U1401A/U1401B comes with a robust protective holster and tested to stringent in-dustrial standards. Each U1401A/U1401B is also sealed with a three-year warranty and the assurance that you can perform yourTake a closer lookRobust protective holsterDual display with backlight 4-20 mA and 0-20 mA percentage scale readoutEasy function access through intuitive buttons and rotary switchVoltage, current, resistance, temperature, frequency, pulse width, duty cycle, diode and continuitySimultaneous source and measureHold and Min/Max/AvgrecordingsBuilt-in battery-charging capabilityBipolar voltage and current, square-wave, auto scan and rampVoltage specificationsThe accuracy is given as ± (% of reading + counts of least significant digit (LSD)) at 23 °C ±5 °C, with relative humidity less than 80% R.H., and after a warm-up period of at least five minutes. Without warm-up, an additional five counts of LSD need to be considered.[1] Input impedance: 10 M W (nominal) for the range of 5 V and above, and 1 G W (nominal) for the 50/500 mV range.[2] Accuracy can be improved to 0.05% + 5. Always use the Relative function to offset thermal effects before measuring the signal.[3] Input impedance: 1.1 M W in parallel with <100 pF (nominal) for the range of 5 V and above, and 1 G W (nominal) for the 50/500 mV range. Crest factor ~ 3.50 mV 500 mV 5 V 50 V 250 V1 µV 10 µV 0.1 mV 1 mV 10 mV0.03% + 5250 Vrms45 Hz to 5 kHz: 0.7% + 405 kHz to 20 kHz: 1.5% + 4045 Hz to 5 kHz: 0.7% + 205 kHz to 20 kHz: 1.5% + 2045 Hz to 5 kHz: 0.8% + 255 kHz to 20 kHz: 1.6% + 2545 Hz to 5 kHz: 0.8% + 705 kHz to 20 kHz: 1.6% + 700.05% + 50[2]10 µV 0.1 mV 1 mV 10 mV10 µV 0.1 mV 1 mV 10 mV1 µV1 µV500 mV 5 V 50 V 250 V500 mV 5 V 50 V 250 V50 mV 50 mV Resolution Accuracy Overload protectionRange Function DC voltage[1]AC voltage[3](True-rms: From 5% to 100% of range)AC+DC voltage[3](True-rms: From 5% to 100% of range)Resolution Accuracy Burden voltage/shunt Overload protectionRange Function DC current AC current[2](True-rms: From 5% to 100% of range)AC+DC current[2](True-rms: From 5% to 100% of range)50 mA 500 mA 50 mA 500 mA 50 mA 500 mA1 µA 10 µA 250 V, 630 mA Quick acting fuse45 Hz to 5 kHz: 0.6% + 2045 Hz to 5 kHz: 0.7% + 250.03% + 5[1]0.06 V (1 W )0.6 V (1 W )0.06 V (1 W )0.6 V (1 W )0.06 V (1 W )0.6 V (1 W )1 µA 10 µA 1 µA 10 µA[1] Always use the Relative function to offset thermal effects before measuring the signal. If this function is not used, accuracy could go down to 0.03% + 25. Thermal effects may be present due to: • Constant current, constant voltage, or square wave output.• Wrong operation. For example, resistance, diode, or mV measurement function is used to measure high voltage signals exceeding 250 V. • After battery charging has completed.• After measuring current greater than 50 mA.[2] Crest factor ~ 3�������������Resistance specificationsDiode and continuity specifications1 ms peak hold specificationsRangeRange Thermocouple type–40 °C to 1372 °C –40 °F to 2502 °F0.15% + 8 [2]1% + 8[3]0.15% + 5 [2]0.3% + 3 °C 0.3% + 6 °F0.45 mA 0.45 mA 45 µA 4.5 µA 450 nA 45 nA0.1 mV0.05% + 5Approximately 0.45 mASingle event >1 ms2% + 400 for all ranges< +4.8 VDC250 Vrms250 Vrms0.1 °C 0.1 °F500 W 5 k W 50 k W 500 k W 5 M W 50 M W0.01 W 0.1 W 1 W 10 W 0.1 k W 1 k W[1] Accuracy is specified for meter operation only, excludes thermocouple probe tolerance and with the instrument placed in the operating area for at least one hour.[2] Accuracy is specified after applying the Relative function to offset any test lead resistance and thermal effect.[3] Accuracy is specified for <60% R.H.The following resistance specifications are valid if the maximum open voltage is less than +4.8 V.For diode test, the overload protection is 250 Vrms and the instrument will beep when thereading is below 50 mV (approx). For continuity test, the instrument will beep when the resistance is less than 10.00 W .Resolution Resolution Resolution Signal width Accuracy for DC mV/voltage/current Accuracy[1]Accuracy Accuracy Test currentOpen voltage Minimum input currentOverload protectionOverload protectionKFrequency sensitivity and trigger level for voltage measurementFrequency sensitivity for current measurementDuty cycle and pulse width100 Hz 1 kHz 10 kHz 100 kHz 200 kHz50 mV 500 mV 5 V 50 V 250 V15 mV 35 mV 0.3 V 3V 30 V25 mV 50 mV 0.5 V 5 V –2.5 mA 25 mA0.1% to 99.9%5% to 95%0.01 ms to 1999.9 ms0.3% per kHz + 0.3%0.2% + 350 mA 500 mADC coupling AC coupling–20 mV 60 mV 0.6 V 6 V 60 V30 mV 80 mV 0.8 V 8 V –0.001 Hz 0.01 Hz 0.1 Hz 1 Hz 10 kHz250 Vrms0.02% + 31 Hz[1] Accuracy is based on a 5-V square-wave input to the 5 VDC range.[2] Pulse width must be greater than 10 µs and its range is determined by the frequency of the signal.Resolution Range Input rangeInput range Function Duty cycle Pulse width[2]Mode Range Accuracy at full scale [1]1 Hz to 100 kHz30 Hz to 20 kHz >100 kHz <20 kHz 20 kHz to 200 kHz Trigger level for DC couplingMinimum sensitivity (rms sine wave)Minimum sensitivity (rms sine wave)AccuracyMinimum input frequencyOverload protectionConstant voltage and current outputsSquare wave output± 1.500 V ± 15.000 V ± 25.000 mA0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75,80, 100, 120, 150, 200, 240, 300, 400, 480,600, 800, 1200, 1600, 2400, 48000.39% to 99.60% 1/Frequency 5 V, 12 V ±5 V, ±12 V0.01% + 0.2% [5]0.01% + 0.3 ms2% + 0.2 V 2% + 0.4 V0.005% + 10.010.390625%Range/2560.1 V0.1 mV 1 mV 1 µA0.03% + 30.03% + 525 mA or above [1]12 V or above[2][3][1] Loading coefficient: 0.012 mV/mA for 1.5 V output.[2] Loading coefficient: 1 µA/ V. The minimum output voltage is based on 20 mA into a 600 W load.[3] If the current loop has a 24-V power, a minimum output voltage of 24 V is achievable with a 20 mA current into a 1200-W load (using the yellow test lead).[4] The positive or negative pulse width must be greater than 50 µs to enable adjustment of duty cycle or pulse width under different frequencies. Otherwise, the accuracy and range will be different from the specifications defined.[5] For signal frequencies greater than 1 kHz, add an addition of 0.1% per kHz.Resolution Resolution Range RangeFunctionConstant voltage (CV)Constant current (CC)Frequency (Hz)Duty Cycle (%) [4]Pulse Width (ms) [4]Amplitude (V)Accuracy Accuracy Minimum output Output Accuracy is given as ± (% of output + counts of least significant digit (LSD)) at 23 °C ± 5 °C, with relative humidity less than 80% R.H., and after a warm-up period of at least five minutes.The maximum input voltage protection is 30 VDC.Both primary and secondary displays are 5-digit on the liquid crystal display (LCD) with a maximum resolution of 51,000 counts and automatic polarity indication. Backlight available. 9.6 V Ni-MH rechargeable batteries: 1.2 V x 8 pieces. No cadmium, lead or mercury. External switching adapter: AC 100 V to 240 V, 50/60 Hz input and DC 24 V/2.5 A output Battery charging: 9.3 VA typicalSourcing of constant current at 25 mA, maximum load: 5.5 VA typical on 24 V DC adapter, 2.4 VA typical on 9.6 V batteriesMeter only: 1.8 VA typical on 24 V DC adapter, 0.6 VA typical on 9.6 V batteriesAssuming fully-charged Ni-MH batteries:Meter only: 20 hours (approx.)Source/Meter: 4 hours (approx.)will appear when voltage drops below 9 V (approx.)3 hours (approx.) in 10 °C to 30 °C environmentNOTE: Prolonged charging is required if battery is fully discharged.3 readings/second, except for: AC+DC: 1 reading/secondFrequency and duty cycle (> 1 Hz): 1 reading/second Pulse width (> 1 Hz): 0.25 to 1 reading/second> 90 dB at DC, 50/60 Hz ± 0.1% (1 k W unbalanced)> 60 dB at DC, 50/60 Hz ± 0.1%0 °C to 40 °C; up to 80% relative humidity (R.H.) for temperatures up to 31 °C, decreasing linearly to 50% R.H. at 40 °C–20 °C to 60 °C with batteries removed; 5% to 80% R.H. non-condensing 0 to 2000 mIEC 61010-1:2001/EN61010-1:2001 (2nd Edition), CAN/CSA-C22.2 No. 61010-1-04, ANSI/UL 61010-1:2004, CAT II 150 V Overvoltage Protection, Pollution Degree 2IEC61326-2-1:2005/EN61326-2-1:2006, ICES-001:2004, AS/NZS CISPR11:2004 Input: 0.15 x (specified accuracy)/°C (from 0 °C to 18 °C or 28 °C to 40 °C) Output: ±(50 ppm output + 0.5 digit)/°C 192 mm x 90 mm x 54 mm 0.98 kg with holster and batteries One-year calibration cycle recommended3 years for main unit3 months for standard accessories unless otherwise specifiedDisplay Power supply Power consumptionBattery lifeCharging time Measurement rateCommon Mode Rejection Ratio (CMRR)Normal Mode Rejection Ratio (NMRR)Operating environment Storage environment AltitudeSafety compliance EMC compliance Temperature coefficient Dimensions (H x W x D)Weight Calibration WarrantyOptional accessoriesU1401A U1401BQuick Start GuideCertificate of Calibration (CoC)Calibrator/Meter standard test lead kitYellow test lead for mA Protective holsterRechargeable battery pack AC power adapter and cord(according to country)U5481A IR-to-USB cable U5491A Soft carrying case U5402A Yellow test lead for mA simulationK-type thermocouple and adapterImmersion temperature probeIndustrial surface temperature probe Air temperature probeAgilent Email Updates/find/emailupdates Get the latest information on the products and applications you select.Agilent Direct/find/agilentdirect Quickly choose and use your test equipment solutions with confidence.Remove all doubtOur repair and calibration serviceswill get your equipment back to you,performing like new, when prom-ised. You will get full value out ofyour Agilent equipment through-out its lifetime. Your equipmentwill be serviced by Agilent-trainedtechnicians using the latest factorycalibration procedures, automatedrepair diagnostics and genuine parts.You will always have the utmostconfidence in your measurements.Agilent offers a wide range of ad-ditional expert test and measure-ment services for your equipment,including initial start-up assistanceonsite education and training, aswell as design, system integration,and project management.For more information on repair andcalibration services, go to/find/removealldoubtFor more information on Agilent Technologies’products, applications or services, pleasecontact your local Agilent office. The com-plete list is available at:/find/contactusPhone or FaxAmericasCanadaLatin AmericaUnited States(877) 894-4414305 269 7500(800) 829-4444Asia PacificAustraliaChinaHong KongIndiaJapanKoreaMalaysiaSingaporeTaiwanThailand1 800 629 485800 810 0189800 938 6931 800 112 9290120 (421) 345080 769 08001 800 888 8481 800 375 81000800 047 8661 800 226 008Europe & Middle EastAustriaBelgiumDenmarkFinlandFranceGermanyIrelandIsraelItalyNetherlandsSpainSwedenSwitzerlandUnited KingdomOther European Countries:/find/contactusRevised: October 6, 200801 36027 7157132 (0) 2 404 93 4045 70 13 15 15358 (0) 10 855 21000825 010 700**0.125/minute07031 464 63331890 924 204972-3-9288-504/54439 02 92 60 848431 (0) 20 547 211134 (91) 631 33000200-88 22 550800 80 53 5344 (0) 118 9276201© Agilent Technologies, Inc. 2009Printed in USA, November 26, 20095990-3459ENProduct specifications and descriptionsin this document subject to changewithout notice./find/handheld-calibrator-meter。
主要特点50, 000点双显示器高达0.025%的基本DC电压精度真正的RMS测量J型和K型温度测量数据存储功能，IR-USB到PC链路可选20 MHz频率计数器程控方波发生器-20°C到+55°C工作温度EN/IEC 61010-1 Category III 1000 V过压保护安全认证内置充电器功能多功能倾斜支架引言安捷伦U1250A系列手持式数字万用表提供了4.5位分辨率、50,000点全标及高达0.025%的基本DC电压精度。
由于这些功能，您可以灵活地进行快速检验测量或进行容限检查和边际失败诊断。
它还提供了真正RMS、dBm和AC+DC读数，准确测量正弦波形和非正弦波形。
通用功能U1250A系列手持式数字万用表提供了台式万用表预计的许多功能。
这些仪器提供了所有基本测量功能，同时增加了当前变化的维护环境所需的功能，如温度测量、频率测量、4-20 mA工艺环路测量及%读数、20 MHz频率计数器(仅U1252A)和dBm测量。
不只是测量工具U1250A系列把用户的能力扩展到典型测量之外。
这些仪器提供了数据存储功能，可以使用选装的PC接口电缆手动或自动完成这些功能。
配套的安捷伦图形用户界面(GUI)进一步扩大了这些仪器的潜力，允许量身定制自己的数据记录需求。
其它功能包括完善的数学运算功能，允许用户处理获得的数据。
U1252A可以作为程控方波发生器使用，模拟电子电路进行调试。
异常坚固、安全可以满怀信心地在几乎任何环境中使用U1250A系列手持式数字万用表。
这些仪器采用强健的封装，带有吸收震动的模铸装置，在-20°C直到+55°C温度下以额定数据工作。
此外，这些仪器的额定电压为Cat III 1000 V(满足IEC61010标准)，在构建电气系统时，可以满怀信心地在主断路器和市电插座之间进行测量，包括在永久连接到市电电路的设备上进行测量。
如需与安捷伦手持式数字万用表有关的更多信息，请访问网站: www..安捷伦U1251A和U1252A手持式数字万用表产品技术资料2U1251A 和U1252A DC 技术数据温度和电容技术数据[1]输入阻抗: 对50 mV~1000 mV 范围, >1 G Ω。
Agilent 34410A/11A 6½数字万用表用户指南通告© Agilent Technologies, Inc. 2005-2012根据美国和国际版权法，未经安捷伦科技公司事先许可和书面同意，不得以任何形式或通过任何方法（包括电子存储和检索以及翻译成其他语言）复制本手册的任何部分。
手册产品编号34410-90418版本第三版2012年 4 月马来西亚印刷Agilent Technologies, Inc.3501 Stevens Creek Blvd.Santa Clara, CA 95052 USAMicrosoft® 和 Windows® 是 Microsoft Corporation 在美国的注册商标。
软件修订版本指南对生产时安装在仪器中的固件有效。
但是，升级固件可能会增加或改变产品功能。
如需最新固件和文档，请访问产品网页：/find/34410A或者/find/34411A 保证本文档中的材料按“原样”提供，在以后的版本中内容如有更改，恕不另行通知。
此外，在适用的法律所允许的最大范围内，安捷伦对与此手册相关的内容及其中所含的信息不作任何明示或默示的保证，包括但不限于为特定目的的适销性和适用性所作的默示保证。
安捷伦公司对与提供、使用本手册及其所含信息以及与执行手册中的步骤有关的任何错误或偶然及继发性损坏不承担任何责任。
如果安捷伦公司与用户之间单独签定的协议中的保证条款涉及本文档中的内容，并且与本文档中的条款相抵触，则应以单独协议中的保证条款为准。
技术许可证本文档中所述的硬件和/或软件随附有许可证。
只能按照这些许可证条款的规定进行使用和复制。
限制性权利的说明美国政府限制性权利。
授予联邦政府的软件和技术数据权利仅包括正常情况下提供给最终用户的权利。
安捷伦按照FAR 12.211（技术数据）和 12.212（计算机软件）的规定提供软件和技术数据的普通商用许可；对于国防部使用，则按照 DFARS 252.227-7015（技术数据—商用品）和 DFARS 227.7202-3（商用计算机软件或计算机软件文档的权利）提供软件和技术数据的商用许可。
8位半万用表大比拼 2008-06-14 17:34要了解8位半这种目前精度最高的数字万用表，就不能不了解8位半万用表的历史，但限于个人认知，很多历史背景并不了解，所以错误在所难免，如果您知道事实，敬请指正。
虽然我可能不是最适合写这篇文章的人，但我仍然愿意抛砖引玉，吸引更多大牛参与进来，相互学习。
1. 历史第一台8位半万用表相信是英国Solarton生产的7081，采用多斜积分转换技术。
Solartron的万用表部门后被Schlumberger收购。
下图即为Solartron/Schlumberger 推出的7081。
但现在schlumberger的网页上已查不到7081，市面上只有二手流通。
要了解Schlumberger,就不得不提及Willtek，且看下面的介绍。
威尔泰克通讯技术有限公司的发展轨迹可以追溯到1957年，当时由一群工程师在慕尼黑南部创办了最初的公司。
几年后该公司被Schlumberger收购，并管理公司达36年之久。
1994年Schlumberger把公司卖给了Wavetek公司，同时将美国印第安那州的团队并入。
1998年，Wavetek公司与德国的Wandel&Goltermann公司合并成立WWG公司。
两年后美国Dynatech公司买下了WWG公司，并将它与其子公司TTC合并。
Acterna公司由此诞生，该公司在世界各地拥有员工4800名。
其无线网络部的一个分部——无线电仪器部2001年接管了英国的Chase通讯公司以及它的无线空中接口业务。
在2002年，Acterna公司管理层通过MBO，剥离了它的无线仪器部门。
2003年3月，Investcorp公司购得其多数股权，为Willtek公司融资，用于开拓公司的新产品和新市场。
Willtek 于2005年7月成为Wireless Telecom Group, Inc. 的全资子公司。
图1，Solartron/Schlumberger 7081英国的Datron是第二个推出8位半万用表的厂商，最早型号是1271,同样采用了多斜积分技术。
纳伏表原理-概述说明以及解释1.引言1.1 概述概述纳伏表原理是一种基于纳米技术的新型传感器原理，可用于检测和测量微小尺度下的压力、温度、湿度等物理量。
纳伏表利用纳米材料的特殊性质，在纳米尺度下实现高灵敏度和快速响应的传感器功能。
本文将详细介绍纳伏表的工作原理、应用领域，以及其相对于传统传感器的优势。
纳伏表采用了一种特殊的结构，通常由纳米材料制成。
纳米材料具有较高的比表面积和较小的尺寸效应，使其在微观尺度下表现出与宏观材料不同的物理和化学特性。
通过利用纳米材料的这些特性，纳伏表可以在微观尺度上感知并量化微小的变化。
当目标物理量作用于纳伏表时，纳米材料会发生形状、尺寸和电荷的变化，进而产生电子能带结构的调整和电子传输性质的改变。
通过测量电子能带结构和电子传输性质的变化，可以获取到目标物理量的信息。
纳伏表的应用范围非常广泛。
它可以用于生物医学领域，用于检测和监测人体内部的微小压力、温度等参数，帮助医生进行疾病诊断和治疗。
此外，纳伏表还可以应用于材料科学领域，用于研究纳米材料的性质和相变行为。
在环境监测领域，纳伏表可以用于检测和监测空气中的污染物浓度，帮助人们了解和改善环境质量。
此外，纳伏表还可以用于电子设备中的触摸屏、显示器等部件，实现更高的灵敏度和响应速度。
纳伏表相对于传统传感器具有诸多优势。
首先，由于纳伏表采用纳米材料制成，因此具有较小的尺寸和重量，可以方便地集成到各种微小设备中。
其次，纳伏表具有高灵敏度和快速响应的特点，可以检测到微小的物理量变化并立即反馈。
此外，纳伏表还具有较宽的测量范围和较高的测量精度，能够满足各种应用场景的需求。
总之，纳伏表原理是一种基于纳米技术的新型传感器原理，具有广泛的应用前景和一系列优势。
通过揭示纳伏表的工作原理、应用领域和优势，本文旨在促进纳伏表技术的发展和应用，为科学研究和工程实践提供新的思路和方法。
1.2文章结构1.2 文章结构本文将主要分为引言、正文和结论三个部分，分别介绍纳伏表原理、纳伏表的应用以及纳伏表的优势。
任务名称：34461A的DCV量程一、什么是34461A的DCV量程？DCV量程是指34461A数字多用表（Digital Multimeter，简称DMM）在直流电压（DC Voltage，简称DCV）测量时能够测量的电压范围。
34461A是一款由安捷伦（Agilent）公司生产的高精度数字多用表，它具有多种测量功能，包括电压、电流、电阻、频率等。
二、34461A的DCV量程的特点1.宽量程：34461A的DCV量程非常宽广，可以涵盖从微伏级别到千伏级别的电压范围。
该多用表提供了多个量程档位，可以根据需要选择最合适的量程进行测量。
2.高精度：34461A是一款高精度的数字多用表，其DCV量程的测量精度非常高，可以达到极小的误差。
这对于需要精确测量电压的实验、工程和科研应用非常重要。
3.自动量程切换：34461A具有自动量程切换功能，可以根据测量信号的大小自动选择合适的量程档位。
这样可以方便用户进行测量，无需手动调整量程。
4.可编程：34461A可以通过外部接口（如USB、LAN）与计算机或其他设备进行通信，用户可以通过编程控制来实现自动化测量、数据记录和分析等功能。
5.直流和交流测量：除了DCV量程，34461A还具有交流电压（AC Voltage）的测量功能。
用户可以通过选择不同的测量模式，实现直流和交流电压的测量。
三、34461A的DCV量程的应用1.电子工程：34461A的DCV量程广泛应用于电子工程领域，可以用于测量电路板上的电压信号，检测电路的工作状态和故障排除。
2.电力系统：34461A的高精度和宽量程使其成为电力系统测试和维护中的重要工具。
可以用于测量发电机、变压器、电力线路等的电压信号，确保电力系统的运行稳定和安全。
3.科学研究：34461A的高精度和可编程性使其在科学研究中得到广泛应用。
可以用于测量实验室中的各种电压信号，帮助科研人员进行数据采集和分析。
4.自动化测试：34461A的自动量程切换和可编程性使其成为自动化测试系统中的重要组成部分。
