The Rohde & Schwarz SMY43 is a synthesized RF signal generator spanning 9 kHz to 2.08 GHz, engineered for component testing, receiver validation, and signal simulation across diverse communication standards. The instrument delivers exceptional signal purity with SSB phase noise of -114 dBc/Hz at 1 GHz carrier frequency and 10 kHz offset, coupled with low residual FM and high spurious rejection. Output ranges from -140 dBm to +13 dBm, with optional boost to +25 dBm via the SMY-B40 module.
Technical Specifications
Frequency Performance
• Frequency range: 9 kHz to 2.08 GHz
• Frequency resolution: 1 Hz
• Setting time: < 60 ms
• Reference frequency standard (optional SMY-B1): aging of 1 × 10⁻⁶/year after 30 days operation
Output Level
• Output range: -140 dBm to +13 dBm
• Overrange capability: +19 dBm standard; +25 dBm with optional SMY-B40
• Output impedance: 50 Ω
• Non-interrupting level setting available over 20 dB range
Modulation Capabilities
• Modulation types: AM, FM, PM, Pulse Modulation
• Internal modulation generator: 1 Hz to 500 kHz
• Optional AF synthesizer (SMY-B2): 10 Hz to 100 kHz or 1 Hz to 500 kHz
• FM deviation: up to 20 MHz for VCO simulation; 2 MHz bandwidth for FSK and telemetry applications
• Stereo channel separation: 50 dB
• External AM monitoring and channel switchover logic integrated
Signal Quality
• SSB phase noise: -114 dBc/Hz (1 GHz carrier, 10 kHz offset)
• Low residual FM and high spurious rejection
Modulation Input
• Input impedance: 100 kΩ; 600 Ω jumper-selectable
– Key Features
• Frequency resolution to 1 Hz enables precise tuning across nine decades
• Dual LCD displays for real-time frequency, level, and modulation parameter monitoring
• High-stability optional reference standard with 1 × 10⁻⁶/year aging specification
• AM, FM, and phase modulation with internal AF synthesis to 500 kHz
– Typical Applications
• RF component characterization and acceptance testing
• Receiver sensitivity and selectivity measurement
• Signal simulation for system-level validation
• FSK and telemetry signal generation
• VCO performance evaluation
– Compatibility & Integration
IEEE 488 (IEC 625) IEC-Bus connector enables remote operation and integration into automated test systems. Power supply accepts 100–120 V or 200–240 V AC at system frequencies of 47–440 Hz.
