Agilent/Keysight 8756A

The Agilent/Keysight 8756A is a scalar network analyzer engineered for amplitude-dependent parameter measurement in RF and microwave devices from 10 MHz to 40 GHz. It delivers 60 dB dynamic range and resolves magnitude to 0.006 dB on the CRT display, making it ideal for characterizing insertion loss, gain, return loss, and absolute power across component and system-level testing. The instrument provides up to 401 measurement points per sweep and supports trace averaging up to 256 traces. Fully programmable over HP-IB, the 8756A integrates directly with sweep oscillators, synthesized sweepers, and digital plotters for automated measurement workflows.

– Technical Specifications

• Frequency Range: 10 MHz to 40 GHz
• Dynamic Range: 60 dB (+10 dBm to −50 dBm)
• Measurement Points: Up to 401 points per sweep
• Measurement Capability: Insertion loss, gain, return loss, absolute power
• Display: CRT with 0.006 dB vertical resolution
• Scale Resolution: 0.1, 0.2, 0.5, 1, 2, 5, 10, 20 dB per division
• Display Cursor Resolution: 0.01 dB
• Reference Offset (Absolute): −70.00 to +20.00 dBm
• Reference Offset (Ratio): −90.00 to +90.00 dB
• Minimum Sweep Time: ≥150 ms (50 ms with Option H20)
• Trace Averaging: 2, 4, 8, 16, 32, 64, 128, 256 traces
• Power Requirements: 48–62 Hz, 115/230 V ±10%, typically 100 W
• Dimensions: 178 H × 425.5 W × 451 mm D
• Net Weight: 15 kg; Shipping Weight: 20 kg

– Key Features

• Three independent measurement channels
• Nine Save/Recall registers for test configurations
• Autoscale function optimizes display scaling and reference level automatically
• Dual-range sweep capability for simultaneous frequency and power-level measurements
• HP-IB control interface for remote automation
• Direct digital plotting to compatible plotters

– Typical Applications

• RF/microwave component characterization
• Gain and loss measurement across wide dynamic range
• Return loss and reflection analysis
• Absolute power measurement in test automation

– Compatibility & Integration

Connects to 8350B sweep oscillator mainframes, 8340/8341-series synthesized sweepers, 11664-series detectors, 85027-series reflectometer bridges, and plotters including the 7470A, 9872C, 7475A, and 7440A.