# Rohde & Schwarz SMB100A RF and Microwave Signal Generator (Pre-Owned) # Rohde & Schwarz SMB100A RF and Microwave Signal Generator (Pre-Owned) ## Key Features At A Glance - Frequency range spanning 9 kHz to 40 GHz across the series, set by the installed RF-path/frequency option - Frequency setting resolution of 0.001 Hz - Level setting range from -145 dBm up to +30 dBm with high-power options, at 0.01 dB resolution - SSB phase noise <-122 dBc (-128 dBc typ.) at 1 GHz, 20 kHz offset, 1 Hz BW, CW - Analog amplitude, frequency, phase, and pulse modulation with internal and external sources - Remote control via GPIB (IEEE-488.2), LAN 10/100BASE-T, USB 2.0, and RS-232 - Optional OCXO reference oscillators (standard or high-performance) for improved frequency stability - Optional pulse generator and pulse train for user-defined radar pulse scenarios The R&S SMB100A is an RF and microwave signal generator built by Rohde & Schwarz. It is configured as a common base unit paired with one RF-path/frequency option that sets the instrument's frequency coverage, generating continuous-wave and modulated signals across a span that reaches from 9 kHz at the low end up to 40 GHz at the top, depending on the installed option. It is a benchtop instrument offered in variants with an electronic step attenuator, a mechanical step attenuator, or without a step attenuator (the latter carrying a limited level-setting and specified level range). A signal generator produces known, controllable test signals used to stimulate a device under test so its response can be measured. On the SMB100A, the optional pulse train capability allows pulses and pulse sequences to be user-defined to generate jittered or staggered pulse scenarios of the kind used in radar applications. With the optional stereo/RDS coder, the instrument generates stereo multiplex and RDS signals for RF frequencies in the 66 MHz to 110 MHz range. ValueTronics stocks this instrument in our own 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois - we are a stocking specialist. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer. ## Brand Heritage Rohde & Schwarz is an independent, privately held electronics company headquartered in Munich, Germany, founded more than 80 years ago. It has operated under the Rohde & Schwarz name without a major corporate rename or acquisition-driven rebrand. ## Accessories Supplied - Power cable - Quick start guide - CD-ROM (with operating and service manual) ## Product Core & Specifications Specification Value Frequency Range (R&S®SMB-B101) 9 kHz to 1.1 GHz Range (R&S®SMB-B102) 9 kHz to 2.2 GHz Range (R&S®SMB-B103) 9 kHz to 3.2 GHz Range (R&S®SMB-B106) 9 kHz to 6 GHz Range (R&S®SMB-B112, -B112L) 100 kHz to 12.75 GHz Range (R&S®SMB-B120, -B120L) 100 kHz to 20 GHz Range (R&S®SMB-B131) 100 kHz to 31.8 GHz Range (R&S®SMB-B140, -B140L, -B140N) 100 kHz to 40 GHz Resolution of setting 0.001 Hz Resolution of synthesis (f = 1 GHz) 0.44 µHz (nom.) Resolution of phase offset setting 0.1° Frequency sweep Operating mode digital sweep in discrete steps Sweep shape triangle, sawtooth Step spacing linear, logarithmic Step size, linear full frequency range, min. 0.001 Hz Step size, logarithmic 0.01 % to 100 % Dwell time range 10 ms to 10 s Dwell time resolution 0.1 ms Reference frequency Frequency error at time of calibration in production < 1 × 10–7 Frequency error with R&S®SMB-B1/-B1H option < 1 × 10–8 Aging, standard (after 10 days uninterrupted operation) < 1 × 10–6/year Aging with R&S®SMB-B1 option < 1 × 10–9/day, < 1 × 10–7/year Aging with R&S®SMB-B1H option < 5 × 10–10/day, < 3 × 10–8/year Temperature effect (0 °C to +50 °C), standard < 2 × 10–6 Temperature effect with R&S®SMB-B1 option < 1 × 10–7 Temperature effect with R&S®SMB-B1H option < 1 × 10–8 Warm-up time (B1/B1H to nominal thermostat temperature) ≤ 10 min REF OUT output frequency (internal reference, sine wave) 10 MHz REF OUT output level +7 dBm to +13 dBm, +10 dBm (typ.) REF OUT source impedance 50 Ω (nom.) REF IN input frequency 5 MHz, 10 MHz REF IN frequency locking range ± 3 × 10–6 REF IN input level range 0 dBm to +16 dBm REF IN input impedance 50 Ω (nom.) Level settings Setting range (R&S®SMB-B101/-B102/-B103/-B106, 1 MHz ≤ f ≤ 6 GHz) –145 dBm to +30 dBm Setting range (R&S®SMB-B112, 1 MHz < f ≤ 12.75 GHz) –145 dBm to +30 dBm Setting range (R&S®SMB-B120/-B131/-B140/-B140N, 1 MHz < f ≤ 40 GHz) –145 dBm to 3 dB above max. specified output power Resolution of setting 0.01 dB Interruption-free level setting range (FIXED mode, ALC state on) 0 dB to 20 dB Level performance Specified level range, PEP (R&S®SMB-B101/-B102/-B103/-B106, 1 MHz < f ≤ 6 GHz) –120 dBm to +18 dBm Specified level range, PEP (R&S®SMB-B112 standard, 1 MHz < f ≤ 12.75 GHz) –120 dBm to +18 dBm Level error (200 kHz < f ≤ 3 GHz) < 0.5 dB Level error (f > 3 GHz, R&S®SMB-B101/-B102/-B103/-B106/-B112) < 0.9 dB Additional level error (ALC state S&H) < 0.25 dB Level setting times Setting time, ALC state on < 2.5 ms Setting time, ALC state S&H, f ≤ 20 GHz < 7 ms Setting time, ALC state S&H, f > 20 GHz < 10 ms Setting time, in list mode after trigger pulse < 1 ms Setting time with switching of mechanical step attenuator, ALC state on < 25 ms Reverse power (instruments with reverse power protection) 1 MHz < f ≤ 1 GHz 50 W 1 GHz < f ≤ 2 GHz 25 W 2 GHz < f ≤ 12.75 GHz 10 W Maximum permissible DC voltage 35 V Reverse power (instruments without reverse power protection) 0.5 W VSWR (output impedance in 50 Ω system, ALC state on) R&S®SMB-B101/-B102/-B103/-B106/-B112, f > 200 kHz < 1.8 R&S®SMB-B112L/-B30, f > 200 kHz < 2.0 R&S®SMB-B120/-B131/-B140/-B140N, 1 MHz < f ≤ 20 GHz < 1.6 (meas.) R&S®SMB-B120/-B131/-B140/-B140N, 20 GHz < f ≤ 40 GHz < 1.8 (meas.) Spectral purity Harmonics < –30 dBc Nonharmonics (f ≤ 23.4375 MHz) < –70 dBc Nonharmonics (23.4375 MHz < f ≤ 1500 MHz) < –70 dBc, < –84 dBc (typ.) Nonharmonics (1500 MHz < f ≤ 3 GHz) < –64 dBc, < –78 dBc (typ.) Nonharmonics (3 GHz < f ≤ 6.375 GHz) < –58 dBc, < –72 dBc (typ.) Nonharmonics (6.375 GHz < f ≤ 12.75 GHz) < –52 dBc, < –66 dBc (typ.) Subharmonics (6.375 GHz < f ≤ 20 GHz) < –55 dBc Subharmonics (20 GHz < f ≤ 40 GHz) < –50 dBc Wideband noise (carrier offset 10 MHz, 15 MHz < f ≤ 6.375 GHz) < –142 dBc Residual FM (f = 1 GHz, 0.03 kHz to 23 kHz) < 10 Hz, 1.35 Hz (typ.) Residual AM (RMS 0.03 kHz to 20 kHz, level = 8 dBm) < 0.02 % SSB phase noise (carrier offset 20 kHz, measurement bandwidth 1 Hz, CW) f = 100 MHz, level = 10 dBm < –141 dBc, –145 dBc (typ.) f = 1 GHz < –122 dBc, –128 dBc (typ.) f = 2 GHz < –116 dBc, –122 dBc (typ.) f = 3 GHz < –112 dBc, –118 dBc (typ.) f = 4 GHz < –110 dBc, –116 dBc (typ.) f = 6 GHz < –106 dBc, –112 dBc (typ.) f = 10 GHz < –102 dBc, –108 dBc (typ.) f = 20 GHz < –96 dBc, –102 dBc (typ.) f = 30 GHz < –92 dBc, –98 dBc (typ.) f = 40 GHz < –90 dBc, –96 dBc (typ.) Amplitude modulation Modulation source internal, external, internal + external External coupling AC, DC > **Important:** Maximum permissible reverse RF power for instruments with reverse power protection: 50 W (1 MHz to 1 GHz), 25 W (1 GHz to 2 GHz), 10 W (2 GHz to 12.75 GHz). Maximum permissible DC voltage: 35 V. > **Important:** The base unit (R&S®SMB100A) must be ordered together with an R&S®SMB-B101/-B102/-B103/-B106/-B112/-B112L/-B120/-B120L/-B131/-B140/-B140L/-B140N frequency option — the base unit is not usable without a frequency option (which determines the RF frequency range, attenuator type, RF connector, weight and depth). > **Important:** Only one of the R&S®SMB-B1 or R&S®SMB-B1H reference oscillator option can be installed. > **Important:** The R&S®SMB-B5 Stereo/RDS coder is only available with an R&S®SMB-B101/-B102/-B103/-B106 frequency option. > **Important:** The R&S®SMB-K27 Pulse Train option requires the R&S®SMB-K23 option and is only available for instruments with serial number > 102400. > **Important:** Serial RS-232 remote control requires the R&S®TS-USB1 serial adapter (recommended extra). > Recommended pairing: connect an R&S NRP-Zxx power sensor via the R&S NRP-Z4 USB adapter cable for external power measurements and level adjustment of the instrument. ## 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.** ## Details - **Price:** 0.0 USD - **Vendor:** Rohde & Schwarz - **Type:** Rf Gen - **Tags:** Manufacturers, Model 100, Pre-Owned, product_manual_group_1, Product_used, RF, Rf Gen, Rohde & Schwarz, Rohde & Schwarz GmbH & Co. KG, Signal Generators, SMB100, SMB100A, Updated Item Review ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 0.00 USD | In stock | | NIST Traceable with Full Data | 0.00 USD | In stock | | ISO IEC 17025 Accredited | 0.00 USD | In stock | ## Images - SMB100A Rohde & Schwarz RF Generator --- > Source: [ValueTronics](https://valuetronics.com/products/smb100a-rohde-schwarz-rf-generator-used) > Updated: 2026-06-02