ZHC618F-100W/R FM Band Digital Audio Broadcasting Transmitter
Introduction: ZHC618F-100W/R is a frequency band digital audio broadcasting transmitter that supports digital mode, analog-to-digital simultaneous broadcasting and analog mode. The digital working mode supports all the working modes specified in GY/T268.1-2013. Linear and nonlinear pre-correction with gain and envelope. Support multi-frequency network (MFN) or single frequency network (SFN) networking. Provides 10MHz clock monitoring output and RF signal monitoring output. Technical Parameters: 1. Operating frequency: 87MHz ~ 108MHz 2. Frequency adjustment step: Multi-frequency network mode 0.1Hz Single frequency network mode 0.1Hz 3. Frequency stability (3 months): Use internal reference source ≤1X10-7dB Use external reference source ≤1X10-9dB 4. Frequency accuracy : Multi-frequency network mode 1Hz Single frequency network mode 0Hz 5. Phase noise: -95.8dBc/Hz @10Hz -113.3dBc/Hz @100Hz -121.8dBc/Hz @1KHz -122.6dBc/Hz @10KHz -126.8dBc/Hz @100KHz -134.6dBc/Hz @1MHz 6. Load adaptability: Reflection loss ≥26dB (normal operation) Reflection loss ≥ 20dB (allows work) 7. Spectrum template: -250KHz -84.6dB -200KHz -89.2dB -110KHz -78.3dB -100KHz -53.9dB 100KHz -50.3dB 110KHz -77.4dB 200KHz -86.1dB 250KHz -87.6dB 8. In-band spectral compliance: 0.4dB 9. Power uniformity between sub-bands: 0.05dB 10. Shoulder: 54.6dB 11. Out-of-band spurs: unwanted transmit power in the adjacent channel band -51.5dB Unwanted transmit power outside the adjacent channel -68.4dB (0.0mW) 12. RF effective bandwidth: Meets the requirements of Appendix A of GD/J062-2014 13. RF output power stability: 0.10dB 14. Peak average power ratio: Meet the CCDF curve template requirements 15. Modulation error rate (MER): 46.4dB 16. Machine efficiency: 31.4% 17. Analog Stereo FM Broadcasting Specifications 1) Residual wave radiation: -70.0dB (0.0mW) 2) Parasitic amplitude modulation noise: -61.9dB 3) Pilot frequency deviation: 0.0Hz 4) 38KHz residual component in the S signal: -67.6dB 5) 100% modulation frequency offset: ±75KHz 6) Pre-emphasis: 50uS 7) Distortion (100% modulation): L 0.03% R 0.03% 8) Frequency response (no addition, de-weighting): L 0.00~-0.02dB R 0.00~-0.02dB 9) Frequency response (addition, de-emphasis): L 0.03~-0.01dB R 0.03~-0.01dB 10) Signal to noise ratio: L 85.7dB R 85.7dB 11) Left and right channel separation: L→R 52.2dB R→L 52.2dB 12) Left and right channel level difference: 0.00dB 18. Digital-to-analog stereo mode FM radio broadcast technical indicators 1) residual wave radiation: -70.1dB (0.0mW) 2) Parasitic amplitude modulation noise: -51.0dB 3) Pilot frequency deviation: 0.0Hz 4) 38KHz residual component in the S signal: -62.6dB 5) 100% modulation frequency offset: ±75KHz 6) Pre-emphasis: 50uS 7) Distortion (100% modulation): L 0.03% R 0.03% 8) Frequency response (no addition, de-weighting): L 0.00~-0.02dB R 0.00~-0.02dB 9) Frequency response (addition and de-emphasis): L 0.01~-0.03dB R 0.01~-0.03dB 10) Signal to noise ratio: L 80.5dB R 80.5dB 11) Left and right channel separation: L→R 52.2dB R→L 52.1dB 12) Left and right channel level difference: 0.00dB 19. Working mode: Support analog, analog-to-digital and digital working modes and their switching 20. CDR modulation mode: support QPSK, 16QAM, 64QAM; LDPC encoding rate: support 1/4, 1/3, 1/2, 3/4 four code rates; transmission mode: support transmission mode 1, 2, 3 . 21. Analog digital signal power ratio: -14dB (digital power adjustable) 22. Pre-correction: linear and nonlinear 23. Frequency Reference Source Switching: Auto/Manual 24. Active/Standby Exciter Switching Mode: Auto/Manual (in case the main exciter device is damaged or no output) 25. Output impedance: 50Ω 26. Output power: 0 ~ rated power 27. RF Input Connector: N-50K 28. RF Output Connector: N-50K 29. Exciter input interface: 1) Audio signal input interface: AES/EBU: XLR female, 110Ω balance Analog left/right: XLR female, 600Ω balance 2) CDR multiplexed stream input interface (two-way signal automatic/manual switching): ASI interface: BNC (female) 75Ω Ethernet port (100Mbps): RJ45 3) External input standard clock interface: 10MHz: BNC (female) 50Ω, L 1pps: BNC (female) 50Ω, TTL level TOD: DB9 (female), baud rate 9600, RS232 serial port 30. RF monitoring interface: BNC (female) 50Ω 31. Remote monitoring interface: RS232/RS485 DB9 (male type) or RJ45 Ethernet interface 32. Lightning protection: Built-in lightning arrester in the cabinet. 33. Heat dissipation method: forced convection 34. Power supply voltage : Single phase AC220V±22V 35. Power frequency: 50Hz±3Hz 2.3 Physical characteristics Chassis standard : 19 inches 19U Chassis size: 565mm (width) × 1000 (height) mm × 850 (deep) mm Machine weight: 50kg Operating environment temperature: -10 ° C ~ +50 ° C Relative humidity: ≤95% Altitude: ≤5000m Atmospheric pressure : 86kPa~106kPa
Introduction: ZHC618F-100W/R is a frequency band digital audio broadcasting transmitter that supports digital mode, analog-to-digital simultaneous broadcasting and analog mode. The digital working mode supports all the working modes specified in GY/T268.1-2013. Linear and nonlinear pre-correction with gain and envelope. Support multi-frequency network (MFN) or single frequency network (SFN) networking. Provides 10MHz clock monitoring output and RF signal monitoring output.
