The Rohde & Schwarz SFC-U USB Compact Modulator is a signal generation instrument for TV and audio broadcasting development and testing. This USB-connected device enables real-time modulation across conventional digital and analog broadcasting standards, delivering modulation error ratios exceeding 40 dB. It interfaces directly with a host PC, integrating transport stream playback, analog audio/video generation, and additive white Gaussian noise (AWGN) for comprehensive receiver and tuner validation.
Technical Specifications
RF Output
• Frequency range: 30 MHz to 900 MHz (base unit); 30 MHz to 3000 MHz (with R&S SFC/SFC-U-K83 option)
• Frequency resolution: 1 Hz
• Output level: −31.5 dBm to 0 dBm (DVB-T RMS, base unit); −110 dBm to 0 dBm (optional)
• Modulation error ratio: >40 dB
Signal Generation
• Transport stream player (integrated)
• Analog A/V generator (integrated)
• AWGN generator (integrated)
– Key Features
• Supports DVB-C2, DVB-C, J.83/B, and ISDB-C cable standards
• Real-time encoding for DVB, ATSC, and ISDB-T transport streams with MPEG-2 and H.264
• Accepts external frequency reference, digital I/Q input, 1PPS timing, and ASI transport stream input
• PC-based control and software integration via R&S SFC-U software suite
• Access to transport stream and test pattern libraries
• Compact form factor for bench and rack integration
– Typical Applications
• TV and set-top box software/hardware development
• Tuner and receiver measurements
• TV transposer testing
– Compatibility & Integration
USB host interface. Low power consumption design optimized for PC-centric test environments.
