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Rohde & Schwarz SMA100A -
Signal Generator
The new standard of excellence in the analog signal generator class
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The R&S SMA100A combines superior signal quality with very high setting speed, which makes it ideal for any task. Whether in development, production, service or maintenance, the R&S SMA100A does an excellent job.
In the frequency range from 9 kHz to 6 GHz, it can generate CW signals as well as all common types of analog modulation (AM, FM, φM, pulse modulation). Excellent specifications and a wide range of modulation signals – these are the characteristic features of the R&S SMA100A. In addition, a low-jitter clock synthesizer option supplies differential clock signals of up to 1.5 GHz independently of the RF frequency. |
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To request a free quote for a Rohde & Schwarz SMA100A
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Features and Benefits: |
Excellent Signal Quality |
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The R&S SMA100A is the ideal solution for measurement applications requiring high spectral purity, e.g. adjacent-channel or phase-noise measurements, and is also optimal for use as a local oscillator or VCO.
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Due to an innovative synthesizer concept, the standard version of the instrument already offers excellent values in terms of broadband noise, SSB phase noise and nonharmonics suppression. The Enhanced Phase Noise Performance and FM/φM Modulator option (R&S SMA-B22) even further improves SSB phase noise for frequency offsets of up to approx. 100 kHz as well as nonharmonics suppression.
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Frequency synthesis is implemented by division of the fundamental frequency range (750 MHz to 1500 MHz) down to 6.6 MHz. In the lower frequency range from 6.6 MHz, this yields spectral purity on par with that of high-grade crystal oscillators.
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The oven-controlled crystal oscillator (OXCO) built in as standard provides very high frequency accuracy and stability. These characteristics are even further improved with the Enhanced Phase Noise Performance and FM/φM Modulator option (R&S SMA-B22).
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Typical SSB phase noise with internal reference oscillator
(standard instrument)
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Typical SSB phase noise with internal reference oscillator
(with Enhanced Phase Noise Performance and FM/φM Modulator
R&S SMA-B22)
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Ideal for use in production |
- In production and ATE applications, the test equipment must provide short setting times in order to ensure high throughput and low measurement costs.
- The R&S SMA100A features the very short level and frequency setting times that Rohde & Schwarz signal generators are known for and is thus an ideal choice in time-critical measurement systems. Setting times are already shorter than 3 ms in normal operation. A further significant reduction (<450 μs) is achieved in the list mode, which uses frequency and level settings previously stored in a list.
- In the fast hopping mode, the R&S SMA100A features setting times as short as in the list mode. In contrast to the list mode, up to 10000 frequency and level pairs can be addressed asdesired via a serial bus.
- The electronic attenuator enables rapid and wear-free level setting of the generator. The level setting range is from –145 dBm to +13 dBm (+20 dBm overrange) for f≤3 GHz, and from -145 dBm to +9 dBm (+16 dBm overrange) for f>3 GHz. Higher output levels of up to typ. +28 dBm can be provided by using the relay-switched high-power bypass implemented in the R&S SMA100A. Overvoltage protection is integrated as standard over the entire frequency range.
- For applications requiring a level setting range not exceeding 30 dB, a more favorably priced solution is available in the form of a frequency option without an attenuator (R&S SMA-B103L/-B106L).
- The high level accuracy and repeatability of the R&S SMA100A ensure results of utmost precision in series measurements.
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Mil/Aero Applications |
- For pulse modulation, the R&S SMA100A includes as standard a high-quality pulse modulator with an on/off ratio of >80 dB and a rise/fall time of typ. 10 ns as well as basic pulse generator. Optionally, a high-performance pulse generator with a minimum pulse width of 20 ns and a variety of setting options is available (R&S SMA-K23)
- Equipped with the R&S SMA-K25 option, the R&S SMA100A can generate avionics signals (VOR/ILS) in accordance with ICAO standard. Due to its low modulation error and very high level accuracy, the R&S SMA100A is the optimal high-precision VOR/ILS signal source for testing avionics receivers.
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All Purpose Instrument |
- The signal generator has a lower frequency limit of 9 kHz, which makes it suitable for use in EMC applications. The upper frequency limit is 3 GHz or 6 GHz.
- Amplitude and pulse modulation are provided as standard; frequency and phase modulation with a bandwidth of 10 MHz can be implemented optionally (R&S SMA-B20/-B22).
- The RF signal can be internally modulated by means of the built-in LF generator or the optional multifunction generator (R&S SMA-K24). The multifunction generator supplies various waveforms including sinewave, squarewave, user-programmable trapezoidal waveforms or noise with selectable bandwidth. Modulation signals can be added together with different weighting applied to the individual signals. The modulation signals for AM/FM/φM and for the LF output can be set independently of one another.
- Moreover, the R&S SMA-B20 and -B22 FM/φM options can be used to implement extremely fast frequency changes (across a limited frequency range). Direct access to the DDS-based synthesizer yields frequency setting times of typ. <10 μs across a range of max. 40 MHz.
- For pulse modulation, the R&S SMA100A includes as standard a high-quality pulse modulator with an on/off ratio of >80 dB and a rise/fall time of typ. 10 ns as well as a basic pulse generator. Optionally, a high-performance pulse generator with a minimum pulse width of 20 ns and a variety of setting options is available (R&S SMA-K23).
- Tests on integrated RF circuits frequently require an ultra-pure clock signal in addition to the RF signal. In the past, an extra signal generator was usually necessary in this case. The R&S SMA100A delivers an extremely low-jitter clock signal (R&S SMA-B29 clock synthesizer option), which can be set independently of the RF output signal. The clock signal is available as a differential signal in the frequency range from 100 kHz to 1.5 GHz at two separate connectors. It enables, for example, A/D converter tests using only a single signal generator.
See application example
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Intuitive operating concept |
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The signal flow is shown by a straightforward block diagram on the R&S SMA100A color display (320 × 240 pixels, ¼ VGA).
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To make settings, use the rotary knob, the cursor and function keys or a USB mouse and/or keyboard.
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Block Diagram
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Rotary Knob
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Connectors |
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The R&S SMA100A can be remotely controlled via GPIB or LAN and also manually operated from an external PC using remote desktop control (VNC) .
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Two USB connectors on the front and the rear panel allow the use of USB devices such as a mouse or a memory stick.
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Other Features |
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With automatic test systems, users often wish to run existing test software on new equipment.
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In addition to the common SCPI remote-control command set, the R&S SMA100A offers an 8662A/63A compatible command set.
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For areas where security is an issue, an ejector option (R&S SMA-B80) is available, by means of which the mass storage medium (compact flash disk containing all stored settings) can be removed from the instrument.
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Selection of IEC/IEEE bus command set
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Compact flash disk ejector on instrument rear side
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For more information on Rohde & Schwarz SMA100A Signal Generator download PDF Datasheet:
View Datasheet |
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