The Keysight J7201B is a programmable attenuation control unit that delivers precise signal level management across DC to 18 GHz for network analyzers and RF test equipment. This half-rack instrument provides 0 dB to 121 dB attenuation in 1 dB increments with insertion loss repeatability better than 0.03 dB typical per section over 5 million operational cycles. Engineers can execute application-specific attenuation sweeps with user-defined start/stop levels, step sizes, dwell times (50 ms to 10 s), and cycle counts (1 to 1,000), or apply relative attenuation offsets from any preset value.
Technical Specifications
• Frequency Range: DC to 18 GHz
• Attenuation Range: 0 dB to 121 dB
• Step Size: 1 dB increments
• Insertion Loss Repeatability: < 0.03 dB typical per section (5 million cycles)
• Sweep Time: 50 ms to 10 s in 50 ms increments
• Operating Temperature: 0 °C to +50 °C
• Storage Temperature: -40 °C to +70 °C
• Operating Humidity: 95% RH at 40 °C, decreasing linearly to 45% RH at 50 °C (non-condensing, 5 days cyclic)
• Operating Altitude: < 4,572 meters (< 15,000 feet)
• ESD Immunity: 6 kV contact discharge per IEC 61000-4-2
– Key Features
• Forward and backward attenuation cycling for 1 to 1,000 cycles
• Relative attenuation step function for offset-based control
• GPIB, USB, and LAN interfaces with LXI Class C compliance
• SCPI programming support and full-featured web interface for remote operation
• Compact half-rack, 2-unit high mechanical design
– Typical Applications
• WiMAX™ and WLAN component design, validation, and manufacturing
• Mobile handset base transceiver station (BTS) handover testing
• S-parameter measurement and component characterization
– Compatibility & Integration
The J7201B integrates with network analyzers and RF test systems via GPIB, USB, or LAN connectivity. LXI Class C compliance enables straightforward remote triggering and configuration through the web interface or SCPI commands.
