The Rohde & Schwarz SMY43 is a precision signal generator spanning 9 kHz to 2080 MHz, engineered for research, development, and production testing environments. It delivers output power from -140 dBm to +19 dBm (expandable to +25 dBm with option SMY-B40) with 1 Hz frequency resolution and level accuracy better than ±1 dB below 1.04 GHz. The instrument supports AM, FM, phase modulation, and pulse modulation with a modulation generator operating 1 Hz to 500 kHz. SSB phase noise measures <-114 dBc at 1 GHz (Δf = 20 kHz), ensuring excellent spectral purity for demanding test applications. Remote control via IEC/IEEE 488 bus and onboard nonvolatile memory for 100 front-panel setups enable flexible laboratory and production integration.
Technical Specifications
Frequency and Resolution
• Frequency range: 9 kHz to 2080 MHz
• Frequency resolution: 1 Hz
Output Power
• Power range: -140 dBm to +19 dBm
• Overrange capability: Up to +25 dBm (option SMY-B40)
• Level accuracy: <±1 dB (f ≤1.04 GHz), 1.04 GHz)
• Level flatness: <1 dB (typically <0.1 dB with software correction)
• Output impedance: 50 Ω
• VSWR: <1.5 (f ≤1.04 GHz), 1.04 GHz)
• RF overload protection: 30 W (SMY01) or 50 W (SMY02)
Modulation
• Types: AM, FM, phase modulation (φM), pulse
• Modulation generator: 1 Hz to 500 kHz
• AM depth: 0 to 100%, input impedance 100 kΩ or 600 Ω (jumper-selected), 1 V peak input
• FM deviation: up to 20 MHz (1040–2080 MHz), with FM bandwidth 2 MHz for FSK/telemetry
• Pulse switching: <20 ns (with optional pulse modulator)
Signal Quality
• SSB phase noise: <-114 dBc at 1 GHz, Δf = 20 kHz
• Residual FM: Low
• Spurious rejection: High
Control and Memory
• Remote control: IEC/IEEE 488 (IEC 625)
• Front-panel interface: LCD display
• Nonvolatile memory: 100 setups
Power Supply
• AC input: 100–120 V or 200–240 V
• AC frequency: 47–440 Hz
– Key Features
• 1 Hz resolution across full 9 kHz–2080 MHz range
• Frequency modulation with high carrier accuracy for digital squelch testing
• Pulse modulation with sub-20 ns switching for complex waveforms
• Software-correctable level flatness enables <0.1 dB performance
• Optional OCXO reference (SMY-B1) for enhanced frequency stability
– Typical Applications
• Receiver and transceiver validation
• Pager and digital squelch testing
• Telemetry and FSK signal generation
• Production test environments requiring stored setups
• Laboratory research with phase noise-critical measurements
– Compatibility & Integration
Full IEEE 488 bus control integrates with automated test systems. Dual voltage input (100–240 VAC) accommodates global lab deployments across 47–440 Hz mains frequencies.
