The Rohde & Schwarz EFA93 is a high-performance TV test receiver and demodulator engineered for precise reception and analysis of analog and digital television signals across cable networks, transmitter stations, development laboratories, and quality control environments. The instrument demodulates vestigial sideband AM signals for analog TV and quadrature amplitude modulated DVB signals for digital TV, with specific design for M/N and NTSC analog standards. It measures comprehensive transmission parameters, supports terrestrial radio channel monitoring, and delivers direct transmitter quality control when deployed as a non-selective RF test demodulator.
– Technical Specifications
• RF input range (Test Receiver mode): 45 MHz to 860 MHz
• RF input range (TV Demodulator mode): 45 MHz to 1000 MHz
• Modular architecture with field-retrofittable options
– Key Features
• High-precision reception and demodulation of analog TV signals (VSB-AM)
• Digital TV signal processing (DVB QAM)
• Multi-parameter transmission measurement capability
• IEC/IEEE-bus (GPIB) interface for instrument control
• RS-232-C serial interface
• Remote control via LAN/WAN terminal server connectivity
• Seven alarm-triggered relays for external device switching
• Internal alarm messaging for measurement functions and storage
– Modular Options
• Option EFA-B3: RF preselection for high-end test receiver applications
• Option EFA-B4: MPEG2 decoder
• Option EFA-B6: Video distributor with 4 video outputs
• Option EFA-B8: Residual picture carrier measurement
• Option EFA-B11: 6 MHz SAW filter
– Typical Applications
• Cable network signal monitoring and analysis
• TV transmitter station quality assurance
• Television signal development and testing
• Terrestrial radio channel monitoring and control
• Direct transmitter quality control measurement
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