Electrical Measuring Instruments

Precise measurement results for reproducible testing processes

Accurate and traceable measurement data form the basis for the development, validation, and quality assurance of electronic systems. High-resolution measurement technology supports reproducible test procedures, standard-compliant measurements, and reliable evaluation of technical changes. This allows for consistent comparison of measurement results and efficient validation of development processes.

High repeatability for reliable measurement series

In research, development, and quality assurance, high repeatability is crucial for consistently reproducing measurement results across multiple test cycles. It enables meaningful comparative measurements, supports the validation of prototypes, and increases process reliability in automated test sequences. As a result, even the smallest changes to the test specimen can be reliably detected and evaluated.

Integration into automated testing systems

Modern development and production environments require the easy integration of measurement technology into existing test benches. Standardized communication interfaces support automated measurement sequences and enable efficient data acquisition and reproducible test processes.

Support from Development Through Production

Electrical measuring instruments are used throughout the entire product life cycle—from research and development through validation and quality assurance to production testing. This allows measurement results to be consistently evaluated and documented across all development phases.

Different types of instruments are suitable depending on the test object and measurement objective . While power analyzers analyze the electrical power parameters of entire systems,source-measure units enable the precise characterization of individual electronic components.

Power Meters – Analysis of Electrical Power Parameters

Power meters measure electrical quantities such as voltage, current, active, reactive, and apparent power, as well as power factor and harmonics. They are used wherever energy consumption, efficiency, or the electrical performance of entire systems needs to be evaluated.

Typical applications include:

• Engine Test Stands and Electric Drive Systems
• Power Adapters and Power Supplies
• UPS Systems
• Inverters and Power Electronics
• Household and Consumer Electronics
• Photovoltaics and Energy Technology

By providing a comprehensive analysis of electrical performance parameters, power meters support the development of energy-efficient products, fault diagnosis, and compliance with regulatory requirements.

Source Measure Units (SMU) – Precise source and measurement technology in a single device

Source-measure units combine a programmable voltage or current source with high-resolution measurement technology. This allows electrical parameters to be precisely set and measured simultaneously. This combination is particularly well-suited for characterizing electronic components and materials.

Typical applications include:

• Characterization of Semiconductors
• Testing LEDs, Diodes, and Transistors
• Characterization of Sensors
• Battery and Cell Tests
• Materials and Components Research
• Research and Development of Electronic Circuits

By combining source and measurement functions, SMUs enable reproducible measurements of even the smallest currents and voltages and support demanding development and validation tasks.

Which test instrument is needed—a power meter or a source-measure unit (SMU)?

The first decision concerns the measurement task. If the goal is to analyze only the electrical power of a system, a power meter is suitable. If voltage or current must be precisely generated and measured simultaneously, a source-measure unit (SMU) is the appropriate choice. The chosen measurement principle should always be based on the application and the test objective.

What voltage, current, and measurement ranges are required?

The required measurement ranges depend on the specific application. In addition to maximum voltage and current values, resolution and measurement accuracy also play an important role. When measuring very small currents or voltages, devices with correspondingly high sensitivity should be selected. At the same time, the measurement range must provide sufficient headroom for future applications.

What measurement functions are required for this measurement task?

The requirements for measurement technology vary depending on the test task. Power meters offer functions for analyzing power parameters such as active power, power factor, and harmonics. Source-measure units, on the other hand, enable characteristic curve measurements, programmable voltage and current setpoints, and the precise characterization of electronic components. It is crucial that the available functions support the planned measurement procedure.

Is the measuring device to be integrated into automated test systems?

In development and production environments, measuring instruments are often controlled by software and integrated into automated test benches. Appropriate communication interfaces facilitate remote control, data acquisition, and integration into existing test systems. If measurement processes are to be automated, these requirements should be taken into account when selecting the equipment.

Electrical measuring instruments must not only provide precise measurements, but also be optimally suited to the specific application. As a specialist in electrical testing and measurement technology, Ing. Erhard Fischer GmbH assists in selecting suitable measurement solutions for development, laboratory, and production environments.

Technical Consulting for the Right Measurement Solution

Selecting a suitable measuring instrument depends on numerous factors, such as the measurement principle, measurement range, accuracy, and system integration. Our technical experts will help you find the right solution for your application—from power analysis to precise component characterization . This ensures you receive a measurement system that is optimally tailored to your requirements.

Support for integration into test benches

Modern measurement devices must integrate seamlessly into existing development and test environments. We advise you on integrating them into automated test benches and assist you in selecting suitable communication interfaces and the appropriate measurement technology for your test process.

Custom Testing and System Solutions

In addition to individual measuring instruments, we also implement custom testing and system solutions upon request. These include the combination of various measuring and testing devices as well as turnkey cabinet systemsthat are precisely tailored to your technical requirements.

Long-term technical support

Even after you’ve selected the right measuring device, we remain available to you as your technical point of contact. From commissioning and first-level support to long-term support, we’ll be with you throughout the entire lifecycle of your measurement solution.