The Keysight (Agilent) 8921A Cell Site Test Set is a portable, integrated platform that consolidates over twenty radio test instruments into a single unit for cellular base station installation and maintenance. Designed primarily for AMPS and TACS systems, it executes automated test and adjustment procedures via an internal IBASIC controller running specialized cell site test software, reducing measurement time and enhancing technician efficiency.
Technical Specifications
Spectrum Analysis
• Synthesized Spectrum Analyzer with Tracking Generator
• Frequency span: 5 kHz to 1 GHz
• Tracking Generator output level: -137 dBm to +7 dBm
• Tracking Generator power output: +13 dBm (over range) for duplexer tuning
• Wide dynamic range for low-level signal detection in high-power transmitter environments
• Marker function with peak-seek capability for frequency and amplitude display
Signal Generation & Modulation
• Synthesized AM/FM Signal Generator
• Duplex Offset Generator
• Two Variable Frequency AF Generators
• π/4 DQPSK signal generator (with relevant adapters)
• AM/FM Modulation Analyzer
• SINAD/SNR/Distortion Meter
• π/4 DQPSK modulation analyzer (with relevant adapters)
RF & Audio Measurements
• RF Power Meter
• RF Frequency Counter and Frequency Error Meter
• Adjacent Channel Power Meter
• Signaling Encoder and Decoder
• Audio Frequency Counter and Power Meter
• AC/DC Voltmeter
• DC Current Meter
General Instrumentation
• Digital Oscilloscope
• High-Stability Timebase
– Key Features
• Built-in IBASIC Controller with HP-IB, RS-232, and Parallel remote interfaces
• Executes HP 11807B Cell Site Test Software for automated base station procedures
• AMPS system information option (HP 11807B Option 120) scans and decodes control channels
• Upgradable for digital cellular systems via adapters (TDMA IS-136, CDMA IS-95A/IS-97, CDPD, PCS 1710–1990 MHz)
– Typical Applications
• AMPS and TACS base station installation and commissioning
• Transmitter and receiver characterization
• Duplexer tuning and verification
• System integration and field maintenance
– Compatibility & Integration
Supports cellular adapters including HP 83201A, HP 83204A (TDMA/CDPD), and HP 83205A (CDMA/CDPD) for extended digital format coverage.
