Used AGILENT / HP / HEWLETT-PACKARD / KEYSIGHT 4421A #9104411 for sale

AGILENT / HP / HEWLETT-PACKARD / KEYSIGHT 4421A is an electronic test equipment used for general purpose RF and microwave measurements. It is capable of measuring up to 40GHz with 7.5 dB dynamic range over the frequency range from 100 kHz to 40 GHz. It has an RF input port for making direct connect measurements such as frequency, power, and return loss. It also has a connector for connecting a power meter or a switch. HP 4421A offers wide measurement capabilities such as frequency, power, switch, reflection, and insertion loss measurements. It is also designed to provide measurements of RF and microwave components including amplifiers, filters, and antennae. It has a build-in step attenuator, allowing for quick adjustment of the input level. AGILENT 4421A is built with general purpose IF/LO preselectors, a high-stability oscillator, an amplifier, a mixer, a low-noise amplifier, and a wideband directional coupler. The preselectors are used for filtering out unwanted frequencies prior to measuring and are adjustable by the user. The oscillator ensures high-accuracy measurements and has a frequency range of 100 kHz to 5 GHz. The mixer and amplifier are used for signal level amplifications and mixing and can be set up for multi-signal measurements. The low-noise amplifier is designed to reduce the noise floor so that low-level signals can be detected with minimal errors. The wideband directional coupler is used to measure the input power and return loss. In terms of measurements, 4421A can measure a wide range of parameters, including frequency, power, VSWR, insertion loss, reflection loss, gain, noise figure, and harmonic measurements. In addition, it can be used to sweep frequency for component measurement. It has an accuracy of 0.01dB on power and 0.2dB on VSWR. KEYSIGHT 4421A is a reliable and versatile electronic test equipment that offers wide capabilities for users. It has a solid and robust construction and is a great choice for general-purpose RF and microwave measurements. Furthermore, it comes with intuitive menus and a customizable user interface that significantly reduces the time to get up and running for any application.