Agilent / HP / Keysight 8644A

The Agilent/HP 8644A Synthesizeed Singal Generator is a high performance, 252 kHz to 1030 MHz generator that provides excellent spectral purity for confidence in RF measurements.

For R&D or stringent testing of communications equipment, the low phase noise and low spurious provide the measurement margin necessary for repeatability and accuracy.

The 8644A uses a modular platform that allows configure the instrument for the application.

For receiver measurements the 8644A offers AM, FM and pulse modulation. FM deviations up to 20 MHz combined with specified rates to 100 kHz can test most communication receivers. AM performance includes 0-100% depth and rates to 100 kHz.

An optical internal modulation synthesizer provides four sources each with a frequency coverage of 0.1 Hz to 400 kHz and sine, square, sawtooth and white Gaussian noise waveforms.

Two of these sources can be summed together to provide two-tone capability, and one of these sources can be modulated by up to three of the sources with AM/FM/Phase Modulation and pulse. This source can also generate signals for testing VOR and ILS receivers.

The standard 8644A has typical leakage of < 1 micro V induced in a two-turn loop, which is sufficient for most R&D or production testing. For sensitive measurements, Option 010, a low leakage configuration, provides more RF shielding and has typical leakage of 0.1 micro V.

The 8644A contains its own firmware and hardware for calibration, troubleshooting, and monitoring instrument performance. Built-in sensors continually monitor internal voltages to notify users of temperature drift, hardware failure, or the need fro recalibration.