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The Rohde & Schwarz R&S®SMF100A is a microwave signal generator built around a single base platform that is ordered with one of two frequency options: the SMF-B122 covering 1 GHz to 22 GHz or the SMF-B144 covering 1 GHz to 43.5 GHz, with the SMF-B2 frequency extension option lowering the start frequency to 100 kHz. Frequency can be set with 0.001 Hz resolution across the range, and phase offset is adjustable in 0.1° steps.
A microwave signal generator produces a precise, controllable RF carrier that serves as a known stimulus for testing and characterizing components, receivers, and systems. The quality of that source — its frequency accuracy, output level control, spectral purity, and modulation flexibility — directly governs the confidence an engineer can place in the resulting measurement.
ValueTronics supports the R&S®SMF100A from our own 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, where we stock and hold our inventory. 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. Holding our own stock since 1992 lets us match the right frequency option and condition to your application.
Rohde & Schwarz was founded in 1933 in Munich by Lothar Rohde and Hermann Schwarz. It remains a privately held, independent company that has operated continuously under the same name since its founding, with no major corporate rebranding or acquisition of the brand.
| Specification | Value |
|---|---|
| Frequency | |
| Range (R&S SMF-B122) | 1 GHz to 22 GHz |
| Range (R&S SMF-B122 with R&S SMF-B2 frequency extension option) | 100 kHz to 22 GHz |
| Range (R&S SMF-B144) | 1 GHz to 43.5 GHz |
| Range (R&S SMF-B144 with R&S SMF-B2 frequency extension option) | 100 kHz to 43.5 GHz |
| Resolution of setting | 0.001 Hz |
| Setting time (to within <1 × 10–7 for f ≥ 375 MHz or <150 Hz for f < 375 MHz, after IEC/IEEE bus delimiter) | <4 ms, typ. 2 ms |
| Phase offset | adjustable in 0.1° steps |
| Frequency Step Sweep | |
| Operating modes | digital sweep in discrete steps; automatic, step, single sweep, external single, external step, external start/stop, manual or external trigger, linear or logarithmic spacing |
| Sweep range | full frequency range |
| Step width (linear) | full frequency range |
| Step width (logarithmic) | 0.01 % to 100 % per step |
| Step time range | 2 ms to 10 s |
| Step time resolution | 0.1 ms |
| Ramp Sweep (R&S SMF-K4 option) | |
| Operating modes | analog frequency sweep; automatic, step, single sweep, external single, external step, external start/stop, manual or external trigger |
| Sweep span range | zero to full frequency range |
| Maximum sweep rate, 100 kHz ≤ f < 375 MHz | 175 MHz/ms |
| Maximum sweep rate, 375 MHz ≤ f < 750 MHz | 87.5 MHz/ms |
| Maximum sweep rate, 750 MHz ≤ f < 1.5 GHz | 175 MHz/ms |
| Maximum sweep rate, 1.5 GHz ≤ f < 3 GHz | 350 MHz/ms |
| Maximum sweep rate, 3 GHz ≤ f < 11 GHz | 700 MHz/ms |
| Maximum sweep rate, 11 GHz ≤ f < 21 GHz | 1400 MHz/ms |
| Maximum sweep rate, 21 GHz ≤ f ≤ 22 GHz (with R&S SMF-B122) | 1400 MHz/ms |
| Maximum sweep rate, 21 GHz ≤ f ≤ 43.5 GHz (with R&S SMF-B144) | 2800 MHz/ms |
| Frequency accuracy | (0.005 % of span)/(sweep time/s) |
| Sweep time range | 10 ms to 10 s |
| Sweep time resolution | 0.1 ms |
| Number of frequency markers | 10 |
| MARKER output (BNC) | TTL signal, selectable polarity |
| X-AXIS output (BNC) | sawtooth signal 0 V to 10 V, output can drive ≥1 kΩ |
| Reference Frequency | |
| Aging (after 30 days of uninterrupted operation) | <1 × 10–8/day, <1 × 10–6/year |
| Aging (with R&S SMF-B1 option) | <5 × 10–10/day, <3 × 10–8/year |
| Temperature effect (0 °C to +55 °C) | ±1 × 10–6 |
| Temperature effect (with R&S SMF-B1 option) | ±6 × 10–9 |
| Warm-up time to nominal thermostat temperature | ≤10 min |
| Output for internal reference signal, frequency | 10 MHz or external input frequency |
| Output for internal reference signal, level | typ. 5 dBm |
| Output for internal reference signal, source impedance | 50 Ω |
| Input for external reference, frequency | 1 MHz to 20 MHz (in steps of 1 MHz) |
| Input for external reference, maximum deviation | 3 × 10–6 |
| Input for external reference, input level limits | ≥−6 dBm, ≤19 dBm |
| Input for external reference, recommended input level | 0 dBm to 19 dBm |
| Input for external reference, input impedance | 50 Ω |
| Electronic tuning from input (EFC), sensitivity | typ. 4 × 10–9/V to 3 × 10–8/V |
| Electronic tuning from input (EFC), input voltage | −10 V to +10 V |
| Electronic tuning from input (EFC), input impedance | typ. 10 kΩ |
| Level | |
| Setting range without attenuator (R&S SMF-B26/-B27 option) | –20 dBm to +30 dBm |
| Setting range with attenuator (R&S SMF-B26/-B27 option) | –130 dBm to +30 dBm |
| Minimum specified level (PEP), without attenuator | –20 dBm |
| Minimum specified level (PEP), with attenuator | –130 dBm |
| Resolution | 0.01 dB |
| Output impedance VSWR (ALC ON), 100 kHz ≤ f ≤ 2 GHz | typ. <1.4 |
| Output impedance VSWR (ALC ON), 2 GHz < f ≤ 22 GHz | typ. <1.6 |
| Output impedance VSWR (ALC ON), 22 GHz < f ≤ 43.5 GHz | typ. <1.8 |
| Setting time without attenuator (after IEC/IEEE bus delimiter) | <3 ms |
| Setting time with attenuator (attenuator mode AUTO) | <25 ms |
| Back-feed, maximum permissible RF power in output (1 GHz ≤ f ≤ 43.5 GHz) | 0.5 W |
| Back-feed, maximum permissible DC voltage | 0 V |
| Maximum Specified Level, R&S SMF-B122 frequency option (PEP) | |
| 1 GHz ≤ f < 11 GHz | without B32: +16 dBm (without attenuator) / +14 dBm (with attenuator); with B32: +25 dBm (without attenuator) / +23 dBm (with attenuator) |
| 11 GHz ≤ f < 21 GHz | without B32: +14 dBm (without attenuator) / +12 dBm (with attenuator); with B32: +23 dBm (without attenuator) / +21 dBm (with attenuator) |
| 21 GHz ≤ f ≤ 22 GHz | without B32: +12 dBm (without attenuator) / +10 dBm (with attenuator); with B32: +22 dBm (without attenuator) / +20 dBm (with attenuator) |
| Maximum Specified Level, R&S SMF-B122 and R&S SMF-B2 options (PEP) | |
| 1 GHz ≤ f < 11 GHz | without B34: +16 dBm (without attenuator) / +14 dBm (with attenuator); with B34: +24 dBm (without attenuator) / +22 dBm (with attenuator) |
| 11 GHz ≤ f < 16 GHz | without B34: +14 dBm (without attenuator) / +12 dBm (with attenuator); with B34: +23 dBm (without attenuator) / +21 dBm (with attenuator) |
| 16 GHz ≤ f < 21 GHz | without B34: +12 dBm (without attenuator) / +10 dBm (with attenuator); with B34: +21 dBm (without attenuator) / +19 dBm (with attenuator) |
| 21 GHz ≤ f ≤ 22 GHz | without B34: typ. +12 dBm (without attenuator) / typ. +10 dBm (with attenuator); with B34: +20 dBm (without attenuator) / +18 dBm (with attenuator) |
| Maximum Specified Level, R&S SMF-B144 frequency option (PEP) | |
| 1 GHz ≤ f < 11 GHz | without B32: +14 dBm (without attenuator) / +12 dBm (with attenuator); with B32: +25 dBm (without attenuator) / +23 dBm (with attenuator) |
| 11 GHz ≤ f < 16 GHz | without B32: +11 dBm (without attenuator) / +9 dBm (with attenuator); with B32: +22 dBm (without attenuator) / +20 dBm (with attenuator) |
| 16 GHz ≤ f < 21 GHz | without B32: +10 dBm (without attenuator) / +8 dBm (with attenuator); with B32: +19 dBm (without attenuator) / +17 dBm (with attenuator) |
| 21 GHz ≤ f < 36 GHz | without B32: +11 dBm (without attenuator) / +9 dBm (with attenuator); with B32: +16 dBm (without attenuator) / +14 dBm (with attenuator) |
| 36 GHz ≤ f ≤ 40 GHz | without B32: +11 dBm (without attenuator) / +9 dBm (with attenuator); with B32: +14 dBm (without attenuator) / +12 dBm (with attenuator) |
| 100 kHz ≤ f < 300 kHz | without B34: typ. +13 dBm (without attenuator) / typ. +13 dBm (with attenuator); with B34: typ. +13 dBm (without attenuator) / typ. +13 dBm (with attenuator) |
| 300 kHz ≤ f < 1 GHz | without B34: +16 dBm (without attenuator) / +15 dBm (with attenuator); with B34: +16 dBm (without attenuator) / +15 dBm (with attenuator) |
Important: Back-feed (from a ≥50 Ω source): maximum permissible RF power in the output 0.5 W; maximum permissible DC voltage 0 V.
Important: The base unit (R&S SMF100A) can only be ordered together with an R&S SMF-B122 or R&S SMF-B144 frequency option — a frequency option is required for operation.
Important: Only two of the three R&S SMF-B83/-B84/-B85 options can be installed simultaneously.
Important: The R&S SMF-B1 OCXO reference oscillator option cannot be installed together with the R&S SMF-B22 enhanced phase noise performance option (not required).
Important: The R&S SMF-K27 Pulse Train option requires the R&S SMF-K23 pulse generator option.
Important: The maximum specified level applies in the temperature range from +15 °C to +35 °C; outside this range, the maximum specified level is typical from 0 °C to +15 °C and typically degrades by less than 2 dB from +35 °C to +55 °C.
Important: The instrument complies with class A emission requirements (EN 55011) and is suitable for use in industrial environments; it may not be operated in residential, commercial and business areas or in small-size companies unless additional measures are taken to ensure EN 61000-6-3 compliance.
Recommended pairing: use the R&S®NRP-Z81 wideband power sensor with the SMF-K28 power analysis option to run power-vs-frequency, power-vs-power, and power-vs-time measurements.
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.
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.
Model No
Rohde
Condition
Pre-Owned
Manufacturer
Rohde & Schwarz
Rf_gen_freq
100 kHz to 43.5 GHz
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