The Keysight M9421A is a PXIe Vector Transceiver (VXT) module that integrates a vector signal generator and analyzer into a single instrument for high-performance RF test applications. Occupying 4 PXIe slots, it delivers modulation and analysis bandwidth up to 160 MHz across frequency options of 60 MHz to 3.8 GHz or 60 MHz to 6 GHz. The module supports test density of up to four units per 18-slot PXI chassis using a single M9300A PXIe frequency reference, making it ideal for manufacturing test of wireless components, power amplifiers, and RF front-end modules.
Technical Specifications
• Frequency Range: 60 MHz to 3.8 GHz or 60 MHz to 6 GHz (selectable)
• Modulation and Analysis Bandwidth: Up to 160 MHz
• Generator/Analyzer Bandwidth: 160 MHz
• Memory: 256 MSa (standard) or 512 MSa (upgradeable)
• Output Power: Up to +20 dBm (high output power option available)
• Module Density: Up to 4 M9421A units per single 18-slot PXI chassis
• CW Measurement Frequency Accuracy: (Transmitter frequency × frequency reference accuracy) ± 50 Hz typical
• Phase Noise: Nominal specifications available at 1 kHz to 10 MHz offset at 1, 2.4, and 5.8 GHz
– Key Features
• FPGA-accelerated measurements for optimized test execution
• True MIMO measurement capability via M9421A-MMO option
• Multi-tester synchronization option (M9421A-MTS) for MIMO configurations
• Tight synchronization for rapid waveform download
• Half-duplex port option (M9421A-HDX)
• Configurable bandwidth at 40 MHz, 80 MHz, or 160 MHz
• Very linear RF output enabling high-fidelity signal generation
– Typical Applications
• Wireless component manufacturing test
• Power amplifier characterization
• RF front-end module validation
• High-volume production environments requiring test density optimization
– Compatibility & Integration
The M9421A operates within the PXIe ecosystem and requires the M9300A PXIe Frequency Reference (providing five 100 MHz outputs and internal 10 MHz OCXO) for meeting datasheet specifications when configuring multiple VXT modules in a chassis.
