The SMT Signal Generator covers the complete range of conventional analog receiver measurements, delivering exceptionally high signal quality for its price category along with outstanding level accuracy. It offers a wide variety of modulation and signal generation modes, customized configuration, and straightforward operation, with all relevant settings shown on a large backlit LCD. Programmable RF, LF, and level sweeps together with correction of external frequency response make it well suited as a source for electromagnetic susceptibility (EMS) measurements.

The SMT is built for receiver and EMS measurements. Its specified frequency range starting at 5 kHz and its programmable level correction make it an ideal EMS signal source, while the optional Multifunction Generator (SM-B6) extends it into stereo measurements on FM sound broadcast transmitters and receivers and into VOR/ILS avionics signal generation. Across these applications the instrument provides any simultaneous combination of AM, FM, phase, and pulse modulation.

ValueTronics stocks and holds its own test-and-measurement inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every used unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer. This combination of held inventory and hands-on used-unit verification lets engineers source instruments like the SMT with confidence in both availability and condition.

Compare Other Models in This Series

The SMT Signal Generator is offered as a family of three models that share a common architecture and differ in upper frequency limit: the SMT02 (5 kHz to 1.5 GHz), the SMT03 (5 kHz to 3 GHz), and the SMT06 (5 kHz to 6 GHz). All three deliver the same core capability set — high signal quality, outstanding level accuracy, and a wide range of modulation and sweep modes — across their respective frequency ranges.

Each model targets conventional analog receiver measurements and EMS work, with the same 0.1 Hz frequency resolution, −144 to +13 dBm level range, and simultaneous AM, FM, phase, and pulse modulation. The choice between models is primarily a question of the highest frequency the application requires.

Each SMT model below is its own dedicated product page with condition-matched pricing. Select the pre-owned listing for the model and frequency range your application requires; the specifications described here apply to the model family as a whole.

Beyond upper frequency limit, the models differ in a few specifications tied to that range. Level accuracy for levels above −127 dBm is ±1 dB below 1.5 GHz, widening to ±1.5 dB above 1.5 GHz and ±2 dB above 3 GHz, so the higher-frequency SMT03 and SMT06 carry the wider tolerances at the top of their ranges. The matching pulse modulator option also differs by model — SM-B3 for the SMT02, SM-B8 for the SMT03, and SM-B9 for the SMT06.

Overload protection against externally applied RF power and DC voltage also varies: the SMT02 and SMT03 tolerate up to 50 W / 35 V, while the SMT06 is limited to 1 W / 0 V. The comparison table below summarizes the frequency range, accuracy, and option differences across the three models.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

Important: Overload protection against externally applied RF power (50 Ω source) and DC voltages: SMT02 and SMT03 ≤50 W / 35 V; SMT06 ≤1 W / 0 V.

Important: The Pulse Generator (option SM-B4) is available only in conjunction with a Pulse Modulator (SM-B3, SM-B8 or SM-B9).

Important: Broadband ϕM is only possible with ϕM2.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.