Rohde & Schwarz SMY Series RF Signal Generators
2 models with full specifications from Rohde & Schwarz.
The Rohde & Schwarz SMY Series consists of cost-effective RF signal generators designed for testing AM, FM, and phase-modulated receivers, as well as conducting general-purpose component measurements. The family includes the Rohde & Schwarz SMY01 and the Rohde & Schwarz SMY02. Both instruments offer high level accuracy, low SSB phase noise, and versatile analog modulation options. They are configured for universal application in laboratory, production, and servicing environments. The primary distinction between the models is their maximum frequency limit, allowing operators to choose the instrument that matches their specific bandwidth requirements while utilizing a consistent operational interface.
- Frequency Resolution
- 1 Hz
- Output Power Range
- -140 dBm to +13 dBm
- SSB Phase Noise
- -114 dBc/Hz
- Modulation Support
- AM, FM, Phase Modulation (φM)
- Interfaces
- GPIB (IEC625/IEEE488)
Models in this series
Frequency Range and Applications
The Rohde & Schwarz SMY Series offers two frequency configurations depending on application needs. The Rohde & Schwarz SMY01 covers a frequency range from 9 kHz to 1040 MHz, making it suitable for standard receiver and component testing. The Rohde & Schwarz SMY02 extends the frequency coverage up to 2080 MHz (2.08 GHz) to accommodate higher frequency receiver measurements. Both models maintain a frequency resolution of 1 Hz, enabling highly precise frequency adjustments.
Level Range and Signal Purity
Both generators provide an output power range spanning from -140 dBm up to +13 dBm, with overrange capabilities reaching up to +19 dBm. Signal purity is maintained across the range with a single-sideband (SSB) phase noise of -114 dBc/Hz (measured at a 20 kHz offset with a 1 GHz carrier on the SMY01). These attributes support the precise evaluation of receiver sensitivity and selectivity.
Modulation and Reference Oscillators
The series supports AM, FM, and phase modulation. For amplitude modulation, the Rohde & Schwarz SMY02 allows modulation depths from 0% to 99% with distortion under 1% at 30% modulation depth. \n\nThe instruments use a standard TCXO reference oscillator with an aging rate of less than 1 x 10^-6 per year. This can be upgraded to an optional OCXO reference oscillator (Option SMY-B1) with an aging rate of less than 1 x 10^-9 per day for applications requiring higher stability.
Frequently asked questions
- What is the main difference between the SMY01 and SMY02 models?
- The primary difference is the maximum frequency. The Rohde & Schwarz SMY01 operates up to 1040 MHz, while the Rohde & Schwarz SMY02 operates up to 2080 MHz. Additionally, the SMY01 features an LCD display, whereas the SMY02 features an LED display for frequency, level, and modulation.
- What are the internal modulation frequency options?
- The Rohde & Schwarz SMY01 offers standard fixed internal modulation frequencies of 400 Hz and 1 kHz, which can be expanded to 1 Hz through 500 kHz with Option SMY-B2. The Rohde & Schwarz SMY02 includes an integrated internal modulation generator covering 1 Hz to 50 kHz.