Spectrum-Analyzers

hp or  Hewlett-Packard  started as a T&M Firm.  Agilent  Technologies continued the Instrumentation Products after hp became a computer company.  Now Keysight Technologies is the new name for the Instrumentation Division. Agilent now is a Life Sciences company..

Keysight Technologies - Test and Measurement

“From a small garage in Palo Alto, California, to employees around the world serving customers in 110 countries, Agilent has a long history of innovation and leadership in the communications, electronics, semiconductor, test and measurement, life sciences and chemical analysis industries.”

Keysight Technologies – Test and Measurement

The company founded by William “Bill” Redington Hewlett and Dave Packard was know as Hewlett-Packard Company or HP. This was a Test and Measurement company. First popular product was a precision audio oscillator, the Model HP200A.

Later Computer and Printer products divisions retained the brand and firm and Agilent was spun off for for the Test and Measurement and other non-computer product line.

Manufacturer of Test and Measurement Eequipment. They also have  Broadcasting and Radiocommunication Solutions. Dr. Lothar Rohde and Dr. Hermann Schwarz set up shop under the name “Physikalisch-technisches Entwicklungslabor Dr. L. Rohde und Dr. H. Schwarz” (PTE)……… 75 Years Rohde & Schwarz

Rohde and Schwarz – Communications and RF Testing

“Rohde & Schwarz is an independent group of companies specializing in electronics. It is a leading supplier of solutions in the fields of test and measurement, broadcasting, radiomonitoring and radiolocation as well as mission-critical radiocommunications. Established more than 70 years ago, Rohde & Schwarz has a global presence and a dedicated service network in over 70 countries.”

R&S FSQ Signal Analyzer

FSQ Signal Analyzer

“It offers very low phase noise, unsurpassed low residual EVM, a wide dynamic range and above-average accuracy, making it the ideal high-end measuring instrument for development applications, where tolerances and limit values must often be lower than defined in a standard.”

Network test & measurement for mobile & internet, RF&Microwave solutions, fibre-optic telecommunications and industrial solutions.

Anritsu Corporation – Test and Measurement

Products include microwave, radio frequency (RF), and optical signal generators, spectrum analyzers, and network analyzers.

The MG3740A is the ideal solution for high-purity signal source for testing analog radio Rx characteristics. Moreover, adding the digital modulation option supports generation of narrowband digital modulation signals.

Anritsu Analog Signal Generator MG3740A

Anritsu’s Analog Signal Generator MG3740A

Analog Signal Generator supporting frequencies of 100 kHz to 2.7/4/6 GHz,

Anritsu Standard Signal Generator MG3642A SSG

Here is a Anritsu Standard Signal Generator MG3642A SSG of a much earlier period.

1931- Anritsu Electric Corporation was established by the merger of Kyoritsu Electric and Annaka Electric.