The Rohde & Schwarz SMS2 is a synthesized signal generator engineered for RF and microwave applications across communications, aerospace, and defense. The B2 option (335.0016.02) extends the frequency range to 1040 MHz, delivering precise frequency control, stable outputs, and multiple modulation formats. This instrument handles development, production, and service tasks with deterministic performance and flexible signal conditioning.
– Technical Specifications
Frequency & Resolution
• Frequency range: 0.1 MHz to 1040 MHz
• Frequency resolution: 100 Hz to 520 MHz; 200 Hz from 520 MHz to 1040 MHz
Output Level
• Output level range: +13 dBm to −137 dBm (30 mV to 1 V equivalent)
• Output level resolution: 0.1 dB
Phase Noise (SSB)
• 20 kHz offset from carrier: −120 dBc to −126 dBc (1 Hz bandwidth)
• 1 MHz offset from carrier: −145 dBc (1 Hz bandwidth)
Spurious Performance
• Spurious deviation: 3 Hz (CCITT) or 15 Hz (30 Hz to 20 kHz)
• Harmonics and subharmonics: Typically 20 dB down
– Key Features
Modulation Capabilities
• AM: Internal (400 Hz / 1000 Hz) or external, modulation factor to 95%
• FM: Internal (400 Hz / 1000 Hz) or external, deviation to 125 kHz
• AM + FM simultaneous operation
• FSK: Phase FSK for data transmission
• AFC: External automatic level control
Interfaces & Control
• IEC-Bus (HP-IB) interface with 40 ms setting time
• External modulation input for AM and FM signals
• LED displays for frequency, modulation, and level readout
• Keyboard entry for parameter setting
Protection & Reliability
• AC supply failure saves current device settings
• Overvoltage protection standard
– Typical Applications
Signal generation for receiver testing, transmitter alignment, and system validation in RF/microwave design and manufacturing environments.
– Compatibility & Integration
The SMS2 succeeds the SMS model and integrates via standard IEC-Bus interfaces. The B2 frequency-range extension option enables operation to 1.04 GHz.
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