The Rohde & Schwarz SMT03 is a versatile analog RF signal generator covering a frequency range from 5 kHz to 3 GHz. Designed for conventional analog receiver measurements and EMS (Electromagnetic Susceptibility) testing, it provides high signal quality, high level accuracy, and flexible sweep functions. The SMT03 supports standard AM, FM, Phase, and Pulse modulation, with broadband capabilities and specialized options for VOR/ILS avionics and stereo broadcast testing.
Specifications
Frequency
| Parameter | Value |
|---|---|
| Minimum Frequency | 5 kHz |
| Maximum Frequency | 3 GHz |
| Frequency Resolution | 0.1 Hz |
| Reference Oscillator Aging (Standard) | < 1 ppm / year |
| Reference Oscillator Aging (Option SM-B1) | < 1 x 10^-9 / day |
| Frequency Settling Time | < 10 ms |
Output
| Parameter | Value |
|---|---|
| Maximum Output Power | 13 dBm |
| Output Power Range | -144 dBm to +13 dBm |
| Phase Noise | < -122 dBc/Hz (at 1 GHz, 20 kHz offset) |
Modulation
| Parameter | Value |
|---|---|
| Modulation | AM, FM, Phase (φM), Pulse (VOR/ILS & Stereo by option) |
| Sweep Modes | RF, LF, Level sweep (programmable) |
| Amplitude Modulation Depth | 0 to 100% |
| Internal LF Generator Frequency | 0.1 Hz to 500 kHz |
| Internal LF Generator Resolution | 0.1 Hz |
General
| Parameter | Value |
|---|---|
| Reference Oscillator | TCXO (Standard), OCXO (Option SM-B1) |
| Interfaces | IEEE-488 (GPIB) |
| Display | Large, backlit LCD |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 to 120 V / 220 to 240 V AC, 47 to 440 Hz |
Frequency Modulation (FM)
| Parameter | Value |
|---|---|
| Broadband FM Range | DC to 8 MHz |
RF Output and Level
| Parameter | Value |
|---|---|
| Output Impedance | 50 Ω |
Interfaces and Connectivity
| Parameter | Value |
|---|---|
| RF Output Connector | N female |
Environmental and Compliance
| Parameter | Value |
|---|---|
| Calibration Interval | 3 years |
Output Level
| Parameter | Value |
|---|---|
| Level Resolution | 0.1 dB |
Spectral Purity
| Parameter | Value |
|---|---|
| Harmonics | < -30 dBc (output level <= +10 dBm) |
| Subharmonics | None (f <= 1.5 GHz), < -40 dBc (f > 1.5 GHz) |
| Non-Harmonic Spurious Signals | < -70 dBc (f <= 1.5 GHz), < -64 dBc (f > 1.5 GHz) at > 10 kHz offset |
Output Power
| Parameter | Value |
|---|---|
| Level Settling Time | < 10 ms |
| Maximum DC Voltage at RF Output | 50 V |
Inputs & Outputs
| Parameter | Value |
|---|---|
| External Reference Input Frequency | 10 MHz |
| Reference Frequency Output | 10 MHz |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +70 °C |
Technology
RF Signal Generation
Applications
Receiver Measurements, EMS Testing, Avionics (VOR/ILS), FM Sound Broadcast Testing