Keysight 34461A 数字多用表：新一代高精度测量利器

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"Keysight Technologies的34461A 数字多用表(DMM)是新一代的高精度、高速度和高分辨率测量工具，专为现代工程师设计。这款多用表系列包括34460A, 34461A, 34465A（6.5位）和34470A（7.5位），旨在满足不同应用对测量性能的需求。 Truevolt DMM系列的核心特点是其图形化功能，如趋势图和直方图，这些功能使用户能快速获取更多深度的洞察。无论是34461A还是其他型号，都配备了数据记录模式，方便进行趋势分析，以及数字化模式，用于捕捉瞬态信号，这在电子设备的故障诊断和性能优化中尤为重要。测量低功率设备的能力是34461A的一大亮点，它能够测量极低的电流范围，最低至1微安，分辨率高达皮安级，这使得它在研究和开发领域对于检测微小电源和能量转换效率极其有用。为了确保测量的长期准确性，Keysight提供了自动校准功能。该功能能够补偿因温度变化导致的误差，帮助用户在整个工作日内保持稳定的测量精度。34461A配备了一块明亮且分辨率达到4.3英寸的高清晰度显示屏，提升了操作的可视性和用户体验。 34461A的规格包括6.5位的数字显示，可以提供精确的读数，基本功能涵盖了常用测量参数，如电压、电流、电阻、电容、频率等，并可能包括其他高级特性，如电导、温度测量以及各种安全功能，如隔离测量和过载保护。总而言之，Keysight 34461A数字多用表是一款集高精度、多功能性和用户友好的设计于一身的专业测量工具，无论是在实验室测试、维修服务还是研发工作中，都能提供卓越的测量体验和有价值的洞察力。"

What Truevolt technology means to you:

You can measure your real-world signals,

not instrument error

Noise and injected current: Keysight Truevolt DMMs contribute

less than 30% of the injected current than alternatives. Compared

to some lower cost alternatives, Truevolt DMMs offer almost

100% less noise.

You can measure your real-world signals with

condence

All Truevolt DMM specifications are tested

and guaranteed for compliance with ISO/

IEC 17025 standards so you can prove the

effectiveness of your lab or production

line’s quality management system. Many

lower-cost DMMs in this class do not

carry a guarantee of their measurement

specifications.

You can take advantage of expanded

measurement functionality

Compared to the 34401A DMM, Truevolt DMMs offer expanded

current ranges from 100 µA to 10 A. We have also added

a temperature measurement function (RTD/PT100, 5 kΩ

thermistor). Additionally, diode measurement capability has been

expanded to allow a larger full-scale voltage to be measured (5 V)

to enable the measurement of more diode types such as LEDs.

Digital AC rms measurements: For meters in this class, only

Keysight uses digital direct sampling techniques to make AC rms

measurements. This results in a true rms calculation technique

that avoids the slower response of analog RMS converters used

in all other vendor’s 6½ digit DMMs. This allows for crest factors

up to 10 without additional error terms. This is a unique, patented

technique – only used by Keysight.

Truevolt

Brand A Brand B Brand C

Input

bias

current

too

noisy

measure

Truevolt

800

700

600

500

400

300

200

100

Brand A Brand B Brand C

Input bias current: Ideally, no current flows into the measurement

terminals of your DMM. In real measurement situations, there are

always input currents creating additional measurement errors.

Truevolt DMMs take care of input bias current. Some alternative

DMMs offer 20% to infinitely poorer performance (some are too

noisy to measure).

Measure with Unquestioned Truevolt Condence

Peak value

RMS value

AC measurement

accuracy is degraded

when signals have

energy contained in

higher frequencies

than a typical sine

wave.

Crest factor: the ratio of the

peak value to the RMS value

of a waveform

05 | Keysight | Digital Multimeters: 34460/61/65/70A - Data Sheet

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Keysight 34461A 数字多用表：新一代高精度测量利器

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