Agilent/Keysight 89640A

The Agilent/Keysight 89640A is a PC-based vector signal analyzer (VSA) engineered for characterization and troubleshooting of complex digitally modulated signals across communications and aerospace/defense applications. The instrument combines VXI-based modular hardware with PC control via IEEE-1394 FireWire connectivity and operates within the 89600 VSA software ecosystem.

Technical Specifications

• Frequency Range: DC to 2.7 GHz


• Analysis Bandwidth: 36 MHz to 39 MHz


• Sensitivity: < −157 dBm/Hz


• Digitizer: 95 MSa/s with 70 MHz IF input


• Signal Capture Memory: Optional up to 384 MSa


• Hardware Architecture: VXI-based modular platform supporting 4-slot, 6-slot, and 13-slot mainframes

Key Features

• Measures RF and modulation quality of digitally modulated signals with flexible demodulation for wideband, narrowband, proprietary, and standards-based formats


• DSP-based spectrum, vector, demodulation, and RF-scope analysis


• Advanced error detection identifies symbol timing errors, filtering errors, DAC overflow, sin(x)/x compensation issues, IQ imbalance, quadrature skew, and IQ offset


• I+jQ mode for composite spectrum and constellation analysis


• Direct support for MATLAB and Mathcad simulation measurements


• Optional second channel enables I/Q baseband and RF coverage or MIMO applications


• Optional real-time simulation capability via dynamic link with Agilent EESof Advanced Design System (ADS)

Typical Applications

• Digital satellite video


• LMDS systems


• 802.11b wireless LAN


• 802.11a and HiperLAN/2 OFDM wireless LAN


• Bluetooth systems

Compatibility & Integration Fully compatible with Keysight 89600 VSA software and over 400 supported hardware models. Integrates with Keysight signal analyzers, oscilloscopes, and logic analyzers through modular VXI platform architecture. Available input modules include the 89605B RF Input Module and E2730A 2.7 GHz RF Tuner.