8508A vs 3458/HFL

 

 

 

 

 

Comments

 

 

Ease of Use Parameters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rear input switched remotely

 

Yes

No

 

The 3458/HFL must be switched manually

 

using IEEE 488 commands

 

 

using a front panel button.

 

 

 

 

 

 

Instrument simultaneously

 

 

 

 

Requires further commands or key presses

 

displays Frequency as well as

 

Yes

Selectable

 

 

 

 

to determine frequency.

 

the AC voltage & current.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8508A can accept and compare dc to dc, ac

 

 

 

 

 

 

 

to ac, dc to ac, Resistance to Resistance &

 

 

 

 

 

 

 

Temperature to Temperature. Auto-ranging

 

Two channel Ratio reference

 

Yes (8508A/01 only)

Yes, but limited to 12Vdc on

 

allows inputs of different magnitude to be

 

measurement

 

the Reference input

 

connected and compared. Feature supports

 

 

 

 

 

 

 

 

 

 

 

the replacement of Kelvin Varley dividers,

 

 

 

 

 

 

 

resistance bridge and ac/dc transfer

 

 

 

 

 

 

 

standards

 

 

 

 

 

 

 

 

 

Able to load SPRT/PRT

 

 

 

 

 

 

 

calibration linearization

 

Yes (up to100)

No

 

8508As displays resistance and temperature

 

coefficients and display

 

 

 

 

 

simultaneously.

 

temperature and resistance

 

 

 

 

 

 

 

 

 

 

 

 

simultaneously.

 

 

 

 

 

 

 

Constant energization current on

 

 

No (the 3458/HFL does not

 

When measuring Resistance in Ratio mode

 

 

Yes

 

not only is the current the same but it is

 

Resistance Ratio function.

 

measure resistance ratio)

 

 

 

 

 

reversed to help reduce thermal offsets.

 

 

 

 

 

 

 

 

GPIB Remote interface

 

IEEE-488.2

IEEE-488.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8508A components are selected for

 

Self-cal or ACAL function

 

Not Required

Required to meet specification

 

minimum drift over time and temperature.

 

 

 

Therefore does not require frequent internal

 

 

 

 

 

 

 

calibration when conditions exceed TCAL

 

 

 

 

 

 

 

specification.

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Fluke specifications 8508A vs 3458/HFL Comments Ease of Use Parameters

8508A, 3458/HFL specifications

The Fluke 3458A and the Fluke 8508A are high-precision digital multimeters (DMM) designed for the most demanding applications in electrical measurement. Both of these instruments provide a plethora of features that make them indispensable tools for engineers, laboratories, and research institutions.

The Fluke 3458A is well-known for its exceptional accuracy and stability. It boasts a 7.5-digit display, offering an impressive resolution of 1 nV for voltage and 1 nA for current measurements. With an accuracy specification of 0.0005%, it can handle both AC and DC measurements with ease, making it suitable for calibrating other instruments and for use in environments where precision is crucial.

One of its standout features is its ability to perform automated measurements through a built-in interface. This feature is particularly useful in laboratory settings where repetitive measurements are common. It supports a variety of communication protocols such as USB, GPIB, and LAN, allowing seamless integration into automated test setups.

The Fluke 8508A, on the other hand, is renowned for its advanced measurement capabilities, including a high input impedance of 10 GΩ. This feature minimizes loading effects on circuits being tested, ensuring accuracy. The 8508A also provides extensive support for data logging, enabling users to capture trends over time.

With 9 different measurement functions, including resistance, capacitance, and frequency, the 8508A is versatile enough to address a wide array of testing needs. Its long-term stability is backed by a high-quality internal reference, ensuring reliable measurements over extended periods.

Both multimeters utilize cutting-edge A/D conversion technologies, such as dual-slope conversion for DC measurements, which significantly enhances accuracy and reduces noise. Furthermore, they are built with robust hardware that ensures durability, making them suitable for both laboratory and field applications.

In summary, the Fluke 3458A and Fluke 8508A DMMs are designed for high-precision measurement tasks. Their advanced features, exceptional accuracy, and innovative technologies make them leaders in the field of electrical metrology. Engineers and researchers can rely on these instruments for their measurement needs, confident in the quality and consistency they provide. Whether used in calibration labs or in complex scientific investigations, these DMMs represent the pinnacle of electrical measurement technology.