The HP/Agilent 8443B Tracking Generator is a dual-function instrument that generates swept RF signals synchronized with spectrum analyzer tuning while providing integrated frequency measurement capabilities. The unit delivers tracking generator output from 100 kHz to 110 MHz at 50 Ohms impedance, with amplitude control spanning -120 dBm to +10 dBm. Front-panel controls offer 10 dB and 1 dB stepped attenuation plus continuous vernier adjustment for precise level setting. Amplitude flatness remains within ±0.5 dB across the full frequency range, with absolute accuracy of ±0.3 dB at 0 dBm and 30 MHz.
## Technical Specifications
• **RF Output:** 100 kHz to 110 MHz, 50 Ohms, AC coupled via BNC connector
• **Output Level:** -120 dBm to +10 dBm with ±0.5 dB flatness
• **Amplitude Accuracy:** ±0.3 dB (absolute at 0 dBm, 30 MHz); attenuator: 10 dB steps ±0.2 dB, 1 dB steps ±0.1 dB; vernier: 1.2 dB continuous
• **Frequency Resolution:** <10 Hz
• **Time Base Accuracy:** <3 × 10⁻⁹ per day after warmup (0.3 Hz/day)
• **Time Base Temperature Drift:** <3 × 10⁻⁸ (3 Hz) over 0–55°C range
• **Power:** 115 V or 230 V, 48–440 Hz, 75 W active / 30 W standby
• **Operating Temperature:** 0 to 55°C; Storage: -40 to +75°C
• **Dimensions:** 16 × 14 × 10 inches; Weight: ~25 lbs
## Key Features
• Integrated 7-digit frequency counter (plus 1 overrange digit) covering 100 kHz to 110 MHz
• Counter resolution selectable at 1 kHz (1 mS gate), 100 Hz (10 mS gate), or 10 Hz (100 mS gate)
• Counter accuracy: ±1 count ± time base accuracy
• Three counter modes: Track Analyzer Mode, Restore Mode, and Scan Hold Mode
• External counter input: 10 kHz to 120 MHz, 50 Ohms, -10 to +25 dBm
• Digital frequency output in 8,4,2,1 code format
• Time base input: 1 MHz, 40 Ohms, 1 Vrms minimum
## Typical Applications
• Frequency response characterization of RF filters and amplifiers
• Insertion loss and gain measurements
• Component alignment and alignment verification
• Swept impedance analysis in conjunction with compatible spectrum analyzers
## Compatibility & Integration
Designed for use with HP/Agilent spectrum analyzers such as the 8553B, providing automatic frequency tracking during swept measurements at analyzer marker positions.
