Integration Time

Chapter 3 Features and Functions

Measurement Configuration

Integration time is the period during which the multimeter’s analog-to- digital (A/D) converter samples the input signal for a measurement. Integration time affects the measurement resolution (for better resolution, use a longer integration time), and measurement speed (for faster measurements, use a shorter integration time).

Applies to all measurement functions except ac voltage, ac current,
frequency, and period. The integration time for the math operations
(null, min-max, dB, dBm, limit test) is the same as the integration time
for the measurement function in use.	3
	3

•Integration time is specified in number of power line cycles (NPLCs). The choices are 0.02, 0.2, 1, 10, or 100 power line cycles. The default is 10 PLCs.

•The integration time is stored in volatile memory; the multimeter selects 10 PLCs when power has been off or after a remote interface reset.

•Only the integral number of power line cycles (1, 10, or 100 PLCs) provide normal mode (line frequency noise) rejection.

•The only way to control the reading rate for ac measurements is by setting a trigger delay (see page 79).

•The following table shows the relationship between integration time and measurement resolution.

Integration Time	Resolution

0.02 NPLC	0.0001 x Full-Scale
0.2 NPLC	0.00001 x Full-Scale
1 NPLC	0.000003 x Full-Scale
10 NPLC	0.000001 x Full-Scale
100 NPLC	0.0000003 x Full-Scale

34401A specifications

Agilent Technologies 34401A is a highly reputable digital multimeter (DMM), renowned for its accuracy, versatility, and performance in a wide range of measurement applications. First introduced in the early 1990s, the 34401A has become a staple in laboratories, manufacturing environments, and educational institutions due to its robust build and comprehensive features.

One of the standout characteristics of the 34401A is its impressive accuracy, boasting a basic DC voltage accuracy of 0.0035%, making it ideal for precise measurements in electronic testing. The multimeter offers a wide range of measurement capabilities, including voltage (DC and AC), current (DC and AC), resistance, frequency, and continuity test, making it a highly versatile tool for engineers and technicians.

The 34401A utilizes a 6½-digit resolution, enabling the user to measure small changes in electrical signals with remarkable precision. With a sampling rate of up to 1000 readings per second, it can handle dynamic test requirements, providing timely results without sacrificing measurement integrity.

In terms of connectivity, the Agilent 34401A includes a GPIB (General Purpose Interface Bus) for remote operation, allowing users to automate their testing processes and integrate the multimeter easily into larger measurement systems. This feature is particularly beneficial in automated test environments, where speed and accuracy are paramount.

Additionally, the DMM incorporates advanced measurement functions, such as statistical analysis, including mean, standard deviation, and minimum/maximum readings, which provide users with valuable insights into their data. The instrument's user-friendly interface, complete with a clear digital display and intuitive controls, enhances usability and ensures that users can easily navigate its various functions.

Robust software support further extends the capabilities of the Agilent 34401A. It is compatible with a range of software tools for data logging and analysis, enabling users to efficiently document and analyze their measurements over time.

In summary, Agilent Technologies 34401A stands out in the realm of digital multimeters due to its high accuracy, extensive measurement functionalities, and user-friendly features. Whether for research and development, quality control, or educational purposes, the 34401A remains a preferred choice for professionals demanding reliable and precise measurement solutions. Its enduring legacy in the industry speaks to its performance and reliability, making it an essential tool for anyone involved in electronic testing and measurement.

Agilent Technologies 34401A manual Integration Time Resolution

Models: 34401A

Measurement Configuration