Agilent/Keysight J7204B

The Keysight J7204B is a four-channel attenuation control unit engineered to extend the measurement capabilities of ENA series network analyzers. It delivers precise signal attenuation across DC to 18 GHz with maximum attenuation of 121 dB in 1 dB steps, supporting simultaneous testing of up to four devices under test. The unit handles maximum input power of 1 W (+30 dBm) and exhibits insertion loss repeatability of 0.03 dB per section over 5 million cycles—critical for minimizing recalibration frequency in production environments.

– Technical Specifications

• Frequency range: DC to 18 GHz
• Number of channels: 4
• Maximum attenuation: 121 dB
• Attenuation resolution: 1 dB steps
• Maximum input power: 1 W (+30 dBm)
• Maximum insertion loss at 0 dB attenuation:
– DC to 6 GHz: 2.5 dB
– 6 to 18 GHz: 5.0 dB
• Return loss (VSWR):
– DC to 6 GHz: 14 dB (1.50)
– 6 to 18 GHz: 10 dB (1.90)
• Insertion loss repeatability: 0.03 dB per section (5 million cycles)
• Form factor: Standard full rack, 2-unit-high

– Key Features

• Four independent channels enable multi-DUT testing workflows
• Fine 1 dB attenuation steps with excellent accuracy and flatness
• Low insertion loss and high return loss across entire frequency band
• LAN and GPIB control interfaces with soft front panel operation
• Multi-language programming support for integration into automated test systems

– Typical Applications

• Receiver sensitivity characterization for multi-channel wireless devices
• Design validation of aerospace and defense RF components
• Manufacturing test of multi-technology wireless subsystems
• Calibration and verification of network analyzer measurements

– Compatibility & Integration

Designed specifically for integration with Keysight ENA series network analyzers. Remote control via LAN or GPIB permits integration into larger test automation frameworks.