Introduction: The ZHC368D FM stereo broadcast modulator is an excellent software radio product with excellent performance. The whole machine adopts new digital signal processing (DSP) and direct digital frequency synthesis (DDS) technology. With the advantages of digital processing technology, it provides users with a perfect listening experience close to CD sound quality. The ZHC368D FM stereo broadcast modulator consists of a main control display, audio interface, digital signal processing, remote telemetry interface and power supply. The unit is housed in a 19-inch 1U standard chassis, and all input and output signals are taken out from the rear panel. Features: 1. The whole process of digital processing to achieve a perfect auditory effect close to CD sound quality 2. Adopt new 550MHz digital signal processing (DSP) technology 3 Using 1000MHz direct digital frequency (DDS) synthesis technology 4. Using high reliability system-on-a-chip (SOC) microprocessor technology 5. Support AES/EBU standard digital audio input 6. Support SCA subcarrier input 7.LCD display working parameters in real time 8. Standard RS232/485 serial communication remote telemetry interface 9. High quality aluminum alloy, 1U, 19 inch standard chassis 10. Input power AC 220V/110V can be switched Technical Parameters: 1. RF frequency range 87MHz～108MHz Step 10kHz (other frequencies can be customized) 2. Output power -8dBm ~ 10dBm continuously adjustable 3. Output impedance 50Ω 4. RF output connector BNC50KY-5 5. Internal residual wave <-70dB 6. Higher harmonics <-60dB 7. Parasitic amplitude modulation <-50dB 8. Carrier frequency tolerance ±200Hz 9. Analog audio input -12dBm ~ +8dBm 10. Audio Level Gain -15dB~+15dB Step 0.1dB 11. Analog audio input impedance 600Ω balance 12. AES/EBU input impedance 110Ω balance 13. AES/EBU input level 0.2~10Vpp 14. AES/EBU sampling rate 30kHz～96kHz 15. SCA Input Unbalance (optional) BNC type connector 16. Audio pre-emphasis 0μs, 50μs, 75μs 17. Frequency response ±0.1dB 30Hz～15000Hz 18. Left and right channel level difference <0.1dB (100% modulation) 19. Stereo resolution ≥50dB 30Hz～15000Hz 20. Stereo signal to noise ratio ≥70dB 1KHz, 100% modulation 21. Distortion <0.1% 30Hz～15000Hz 22. Power supply voltage AC90V~AC132V or AC180V~ AC260V 23. Chassis size 19 inches, 1U (484mm × 305mm × 44mm) 24. Machine weight 4kg 25. Operating ambient temperature -5 ° C ~ +45 ° C 26. Relative humidity <95%
Introduction: The ZHC368D FM stereo broadcast modulator is an excellent software radio product with excellent performance. The whole machine adopts new digital signal processing (DSP) and direct digital frequency synthesis (DDS) technology. With the advantages of digital processing technology, it provides users with a perfect listening experience close to CD sound quality. The ZHC368D FM stereo broadcast modulator consists of a main control display, audio interface, digital signal processing, remote telemetry interface and power supply. The unit is housed in a 19-inch 1U standard chassis, and all input and output signals are taken out from the rear panel.
