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The R&S SMR20 (1104.0002.20) 20 GHz CW, signal or synthesized sweep generator can be upgraded any time by means of options to give an AM/FM signal generator or a synthesized sweep generator featuring fast, fully synthesized, analog ramp sweep. Advanced frequency synthesis with fractional-N divider makes for low SSB phase noise and high spurious suppression, both of which are for example prerequisites for reliable receiver measurements. The crystal reference built in as standard ensures an accurate, low-drift output frequency. A high-quality pulse modulator has an on/off ratio is better than 80 dB, the rise/fall time shorter than 12 ns. Pulse widths of up to 25 ns are possible. Specifications. Frequency range: 1 GHz to 20 GHz (10 MHz to 20 GHz optional). Resolution: 1 kHz (0.1 Hz optional). Aging (after 30 days of operation): 1 × 10^–6/year <1 × 10^–7/year. SSB phase noise (f = 10 GHz, 10 kHz from carrier, 1 Hz bandwidth, CW, FM off): <–83 dBc. Maximum level: >+13 dBm (0.01 GHz to <1 GHz), >+11 dBm (1 GHz to <18 GHz), >+10 dBm (18 GHz to 20 GHz). Minimum level of all models: -20 dBm (underrange <-20 dBm). Resolution: 0.1 dB or 0.01 dB, selectable. Impedance: 50 ohm. SWR: <2. Options. SMR-B1 (1104.5485.02), OCXO Reference Oscillator. SMR-B3 (1104.5585.02), Frequency Resolution 0.1 Hz. SMR-B4 (1104.5685.02), Ramp Sweep. SMR-B5 (1104.3501.02), AM/FM/Scan Modulator. SMR-B11 (1104.4250.02), Frequency Extension 0.01 GHz to 1 GHz. SMR-B14 (1104.3982.02), Pulse Generator. SMR-B15 (1104.4989.02), RF Attenuator. SMR-B19 (1104.6281.02), Rear Connectors for RF, AF. SMR-B23 (1104.5804.02), IF Input DC to 700 MHz. SMR-B25 (1135.1998.02), IF Input 0.04 GHz to 6 GHz. SMR-B31 (1164.7910.02), Low Leakage.
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