Keysight Technologies Next-Generation 6½, 7½ Digit Performance Digital Multimeters

March 23 2015, 03:00
Keysight Technologies (former Agilent) introduced two Truevolt Series digital multimeters (DMMs) – the Keysight 34465A DMM (6½ digit) and the Keysight 34470A DMM (7½ digit). The new DMMs help visualize measurement data in multiple ways, get actionable information faster, and document results easily.

Truevolt DMM’s advanced graphical capabilities, such as trend and histogram charts, allow greater insights faster. Both models offer three acquisition modes: continuous running for typical measurements, data logging for easier trend analysis, and a digitizing for capturing transients. Both models also offer auto calibration, which compensates for temperature drift, allowing to maintain measurement accuracy throughout the workday.

The Keysight 34465A DMM offers a new, higher-performance 6½ digit class of DMM, and provides higher speed, better accuracy and more memory. The 7½ digit 34470A DMM is a new product category of DMMs for Keysight and provides even greater resolution and accuracy, a requirement for today’s most challenging devices. Both DMMs offer deeper memory for data storage than previous generation DMMs. They also provide the ability to measure very low current, 1 µA range with pA resolution, for measurements on very low power devices.

Most DMMs show results on a low-resolution numeric display, while the new Keysight Truevolt Series offers a 4.3-inch, high-resolution color display to view numerical readings, measurement trends, histograms and statistical data. They also allow to save and recall measurement states and display preferences.

The DMMs Easy File Access feature provides simple USB connectivity between the Keysight Truevolt DMMs and a PC using standard USB media transfer protocol. In addition, the DMMs include drag and drop measurement data capability, adjust instrument settings, and the ability to send screen images to PC applications without additional software.

BenchVue software lets users control, capture and view Keysight’s DMMs simultaneously with other Keysight bench instruments and with no additional programming, transfering data to a PC via USB, LAN or GPIB for additional viewing and analysis.

Truevolt Measurements
Real signals are never clean or noise free. They often have an AC component from power line noise or other environmental noise such as electromagnetic interference. How well a DMM deals with these extraneous factors and eliminates them from the true measurement makes a big difference to its accuracy. Using patented analog-to-digital converter technology, Keysight Truevolt Series DMMs account for measurement errors created by these common factors.

According to Keysight, Truevolt DMMs also have less than 30 percent of the amount of injected current attributed to the meter compared with DMMs made by other vendors. In typical measurement situations, input currents create measurement errors, adding voltages to DMM results. Truevolt DMMs take care of input bias current. Keysight states that other vendors’ DMMs offer 20 percent less performance and that some are too noisy to get reliable measured results.

In the 6½ and 7½ digit class of meters, only Keysight uses digital direct sampling techniques to make AC rms measurements. This results in a true rms calculation and avoids the slow response of analog rms converters used in all other vendor’s 6½ and 7½ and digit DMMs, allowing for crest factors up to 10 without additional error terms.

Keysight Truevolt Series 34465A is priced at $1,395; the 34470A is priced at $2,890.

Direct sales in North America
Keysight Technologies recently announced that effective June 1, 2015, it will resume direct sales of high-performance products to all customers in North America. This includes Keysight’s broad portfolio of high-performance network analyzers, spectrum analyzers, signal sources, power products, oscilloscopes and modular solutions.

Electro Rent has been responsible for selling and supporting these products at specific accounts in North America. On June 1, responsibility for selling Keysight products and solutions to these customers will revert to Keysight’s direct sales force.

“The move to direct sales in North America is the result of a shift in the channel strategy for high-performance products in the U. S. and Canada,” said Dave Aplin, Keysight’s Americas complementary channel manager. “We will, however, retain our long-term relationship with Electro Rent, who has been a Premier Rental Partner for many years.”
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