The HP/Agilent 3336B Synthesis/Level Generator delivers precise, phase-continuous signal generation across multiple frequency and impedance configurations. This instrument combines synthesized frequency generation with controlled amplitude output and integrated modulation capabilities, serving research, development, and production testing environments. Its fast leveling loop enables flat amplitude response during high-speed frequency sweeps, while external leveling options support specialized measurement setups.
## Technical Specifications
**Frequency Generation**
• Frequency range: 10 Hz to 20.999999 MHz (unbalanced 75 Ω); 10 Hz to 10.999999 MHz (balanced 124 Ω); 10 kHz to 10.999999 MHz (balanced 135 Ω); 200 Hz to 109.99999 kHz (balanced 600 Ω)
• Frequency resolution: 1 µHz (< 100 kHz); 1 mHz (≥ 100 kHz)
• Frequency accuracy: ±5 × 10⁻⁶ of programmed frequency
• Aging rate: ±5 × 10⁻⁸/week (with Option 804)
• Phase continuity maintained across full frequency range
• Sweep modes: Internal frequency sweep with linear or logarithmic phase-continuous operation
• Sweep performance: ±0.15 dB (50 Hz to 1 MHz, 0.5 s normal leveling); ±0.15 dB (10 kHz to 20 MHz, 0.03 s fast leveling)
**Amplitude Generation**
• Output range: −71.23 to +8.76 dBm (50 Ω); −72.99 to +7.00 dBm (75 Ω, 600 Ω); −78.23 to +1.76 dBm (124 Ω, 135 Ω, 150 Ω)
• Amplitude accuracy: ±0.05 dB
• Amplitude flatness: ±0.05 dB (Option 005)
**Modulation**
• Modes: AM, FM, Pulse
• AM depth: 0 to 100% (frequency range 50 Hz to 50 kHz); envelope distortion < 30 dBc at 80% modulation
• Phase modulation: 0° to ±2850° or 0° to ±850° (DC to 5 kHz); linearity ±0.5%; input sensitivity ±5 V peak for 850° shift
**Spectral Purity**
• Harmonics: Below −60 dB (50 Hz to 1 MHz); below −50 dB (50 Hz to 20 MHz)
• Spurious signals: Below −70 dBc or −100 dBm (standard); below −115 dBm (Option 005)
• Integrated phase noise: −64 dB (3 kHz band, ±2 kHz around 20 MHz carrier)
## Key Features
• Phase-continuous frequency sweep capability over all instrument ranges
• Fast leveling loop for amplitude stability during rapid frequency transitions
• Multiple output impedance configurations (50, 75, 124, 135, 150, 600 Ω)
• Optional high-stability frequency reference for reduced aging
• External leveling control for custom applications
## Typical Applications
• Telecommunications system characterization
• Production testing and calibration
• Research and development signal sourcing
• System integration and validation
## Compatibility & Integration
The 3336B accommodates standard 50 Ω laboratory configurations alongside specialized impedances, enabling integration into diverse test architectures without external impedance matching.
