The Rohde & Schwarz SFQ TV Test Transmitter generates high-quality test signals across analog and digital television standards from 0.3 MHz to 3.3 GHz. Built on modular hardware and open-end software architecture, the SFQ accommodates DVB-T, DVB-S, DVB-C, ATSC/8VSB, ITU-T/J.83B, and ISDB-T formats with flexible modulation control. The instrument supports dual-standard analog satellite signals (PAL, SECAM, NTSC) and FM/ADR sound subcarriers, making it suitable for broadcast research, receiver development, and quality assurance.
Technical Specifications
Frequency Coverage
• Operating range: 0.3 MHz to 3.3 GHz
• RF upconverter: 5 MHz to 1000 MHz
• RF frequency resolution: 1 kHz or 1 Hz
Digital TV Standards
• DVB-T (2K/8K COFDM, 6/7/8 MHz bandwidth, hierarchical coding)
• DVB-S, DVB-DSNG, Turbo Coder (QPSK, 8PSK, 16QAM)
• DVB-C (16/32/64/128/256 QAM selectable)
• ATSC/8VSB with 188-byte MPEG transport stream packets
• ITU-T/J.83B (US cable)
• ISDB-T (Mode 1/2/3, 2k/4k/8k, up to 3 layers, 13 segments per layer, DQPSK/QPSK/16QAM/64QAM)
Modulation & RF Output
• Vestigial sideband SAW filter with switchable group-delay precorrection
• Double-sideband test modulator (32–46 MHz IF)
• RF output level: +10 dBm to 0 dBm (mode-dependent)
• Non-interrupting level reduction to −14 dB
• Upper/lower sideband switchover at RF
• Root-cosine roll-off factor variable for DVB-S/DVB-DSNG/DVB-C
Sound Subcarriers
• Option SFQ-B3: 2 FM sound subcarriers (5–9 MHz) with 2 audio generators and external audio inputs
• Option SFQ-B4: 2 ADR sound subcarriers (0.1–9 MHz) with 2 MUSICAM generators and external data input
Measurement & Simulation
• Internal noise generator for C/N measurement (Option SFQ-B5)
• Bit error measurement across all digital modulation modes
• Fading simulator: 6 or 12 paths with predefined (Rayleigh, Rice, Doppler, Lognormal) and user-defined profiles (Option SFQ-B11)
Interfaces
• Input: ASI, SPI, SMPTE310
• External I/Q signal input/output (Option SFQ-B14)
– Typical Applications
Broadcast transmitter development, receiver validation, modulation analysis, and channel impairment simulation for DVB and ATSC deployments.
