Agilent/Keysight CX1204A

The Agilent/Keysight CX1204A is a cable and antenna analyzer designed for testing and troubleshooting transmission line and antenna systems in the field. It delivers critical measurements for assessing signal integrity, impedance matching, and fault detection across communication networks.

Technical Specifications

The CX1204A performs return loss measurement, quantifying power loss due to signal reflections from antennas or cables. VSWR (Voltage Standing Wave Ratio) analysis characterizes transmission line impedance mismatch and load matching quality. Insertion loss measurement determines signal attenuation through cable paths, essential for evaluating signal degradation over distance. Distance-to-Fault (DTF) capability identifies physical locations of faults and impedance discontinuities along transmission lines by analyzing reflection signatures. Antenna-to-antenna isolation measurement verifies signal separation in multi-antenna deployments, preventing unwanted coupling between radiating elements.

Key Features

• One-port and two-port measurement modes


• Vector Network Analyzer (VNA) S-parameter capabilities


• Time-domain analysis for impulse response characterization


• Field-programmable architecture with software license upgrades


• Integrated calibration methods (CalReady, QuickCal) reducing external calibration kit dependency


• Handheld form factor enabling field-deployed precision measurements

Typical Applications Transmission line fault location and characterization. Antenna impedance and matching assessment. Cable loss quantification in installed systems. Multi-antenna isolation and interference analysis. Network integrity diagnostics in RF communications infrastructure.

Compatibility & Integration The CX1204A integrates VNA measurement capabilities, supporting both single-port reflection and two-port transmission analysis. Field-upgradeable software licensing enables functional expansion without hardware replacement.