The Agilent/Keysight 04287-60111 is a test head assembly for the Keysight 4287A RF LCR Meter. It serves as the measurement interface for precision impedance characterization across 1 MHz to 3 GHz, enabling fast, accurate component testing in production environments. The test head connects to the 4287A’s 3.5 mm measurement terminal and supports the meter’s full range of impedance parameters and calibration functions.
Technical Specifications
• Operating Frequency Range: 1 MHz to 3 GHz (100 kHz resolution)
• Measurement Terminal: 3.5 mm (female)
• Test Signal Levels:
– Voltage (open condition): 4.47 mVrms to 502 mVrms (447 mVrms above 1 GHz)
– Current (short condition): 0.0894 mArms to 10 mArms (8.94 mArms above 1 GHz)
• Measurement Range: 200 mΩ to 3 kΩ at 1 MHz (accuracy ≤10%)
• Measurement Speed: 9 milliseconds per point (maximum)
• Basic Accuracy: ±1.0%
– Key Features
• Measures 16 impedance parameters: |Z|, θz (rad/deg), |Y|, θy (rad/deg), X, G, B, Ls, Lp, Cs, Cp, Rs, Rp, Q, D
• 5-digit display resolution
• Multiple calibration methods: open/short/load/low-loss capacitor calibration
• Fixture electrical length compensation
• Open/short compensation
• Contact resistance (Rdc) measurement with selectable on/off function
• Direct-current voltage-measurement technique for wide impedance range accuracy
– Typical Applications
• Production line testing of surface-mount device (SMD) inductors
• EMI filter component characterization
• High-frequency impedance measurements for RF and microwave components
• Automated test handler integration via opto-isolated interface
– Compatibility & Integration
The 04287-60111 test head operates exclusively with the Keysight 4287A RF LCR Meter. The parent instrument provides GPIB and LAN (10base-T/100base-TX) connectivity, opto-isolated handler interface support, and internal data storage via hard disk drive option.


















