The Wiltron 6737B is a swept frequency synthesizer spanning 2 GHz to 20 GHz, engineered for precision signal generation and analysis in RF and microwave testing. Built on microprocessor-based architecture with GPIB control, this instrument delivers both swept and CW outputs with fundamental YIG-tuned oscillators ensuring superior signal purity. Harmonic and spurious content remains below -60 dBc across its operating range, enabling accurate characterization of narrow-band devices and communication systems.
Technical Specifications
Frequency Performance
• Operating range: 2 GHz to 20 GHz
• Frequency resolution: 1 kHz
• Output power: Up to +13 dBm (20 mW), rated to +13 dBm with overrange capability +1 to +18 dBm
• Source impedance: 50 Ω
• Frequency switching: <15 ms typical, 25 ms maximum to within 1 kHz for any step size (phase-locked step sweeps)
Signal Quality
• Harmonic and spurious signals: <-60 dBc from 2 to 26.5 GHz
• Low single-sideband noise with minimal spurious content
Modulation & Pulse Capabilities
• Simultaneous FM, AM, and pulse modulation
• Built-in pulse generator with rise time <5 ns
• Internal pulse width range: 25 ns to 99 ms
• External pulse repetition rates: 10 Hz to 10 MHz
• External pulse width range: 10 ns to CW
• Wideband FM deviation: Up to 20× modulation rate (100 Hz to 250 kHz)
• Unlocked FM mode: ±25 MHz deviation, DC-capable modulation rates
Sweep Modes
• Continuous analog sweep with phase-lock correction
• Phase-locked step sweep: Up to 1800 synthesized steps, minimum 1 kHz spacing
• Programmable frequency agility: 512 nonsequential frequencies addressable via GPIB
• Power sweep mode for frequency stepping at each power level
• Sweep triggering: Auto, Line, External (TTL), and Single modes
• Analog sweep resolution: 1 MHz or sweep width divided by 4096 (whichever is greater)
• Step sweep resolution: 1 kHz at ≤26.5 GHz
Built-in Power Meter
• Measurement range: +16 dBm to -35 dBm (10 MHz to 40 GHz with Wiltron detectors)
– Key Features
• Phase-locked synthesis with 1 kHz resolution across full band
• Rapid frequency switching under 25 ms maximum
• Integrated pulse generation with nanosecond rise times
• Flexible sweep architectures from analog to fully programmable step sequences
• On-board power measurement capability
– Compatibility & Integration
GPIB remote control enables integration into automated test systems. The 6737B is part of the 6700B Series microprocessor-based platform.
