Rohde & Schwarz SMT03 5kHz to 3GHz Signal Generator

The Rohde & Schwarz SMT03 is a benchtop RF signal generator spanning 5 kHz to 3 GHz, engineered for receiver development, production, and repair workflows as well as electromagnetic susceptibility testing. It delivers high signal quality with output levels from -144 dBm to +13 dBm and exceptional frequency resolution of 0.1 Hz. The instrument combines low phase noise, precise level accuracy, and flexible modulation capabilities—including AM, FM, and phase modulation with optional pulse and specialized generator modules. Programmable sweep functions, external level correction, and multiple interface options (IEEE 488, RS-232, SCPI 1993.0) enable integration into automated test systems. Field-upgradeable architecture supports VOR/ILS generation, stereo FM measurement, and advanced pulse generation through optional modules.

– Technical Specifications

• Frequency Range: 5 kHz to 3 GHz
• Frequency Resolution: 0.1 Hz
• Output Level Range: -144 dBm to +13 dBm (up to +16 dBm in limited range)
• Output Level Accuracy: ±1.5 dB; ±2 dB for frequencies above 3 GHz
• Timebase Stability: 0.000001 /yr
• Frequency Switching Time: 25 ms
• SSB Phase Noise: -109 dBc/Hz (typical -116 dBc/Hz at 20 kHz offset, 1 GHz)
• Programmable Interface Phase Noise: -120 dBc/Hz
• RF Leakage: 50 dB separation and >76 dB unweighted S/N ratio
• Optional pulse generator and modulator (20 ns to 1 s pulse width, up to 10 MHz pulse frequency, >80 dB on/off ratio)

– Typical Applications

• Radio equipment development and manufacturing
• Receiver characterization and production testing
• Electromagnetic susceptibility (EMS) measurements
• FM broadcast transmitter and receiver verification
• Avionics navigation system testing (VOR/ILS option)

– Compatibility & Integration

• Remote control via IEEE 488 (IEC 625) and RS-232
• SCPI 1993.0 command set for standardized instrument control
• Large backlit LCD display
• Optional rear panel RF and LF connectors (SMT-B19)