| Customization: | Available |
|---|---|
| Type: | Transmitter |
| Function: | Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment |
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ZHC618F-5000W/M3 FM Stereo Transmitter
The FM broadcasting transmitter adopts a new digital FM broadcasting exciter, high-efficiency RF power amplifier and high reliable switching power supply, etc. in a modular way, it forms a new cabinet 5kW FM broadcasting transmitter with small size and superior performance.
The transmitter adopts modular structure to facilitate the maintenance of the transmitter; Active and standby double actuators can be configured to further improve the reliability of the whole machine.
FEATURES
1. Modular design concept, each functional module is assembled with building blocks, which is easy to maintain and repair.
2. The main and backup dual exciter configurations can be used to reduce the stop rate (spare exciter and automatic switcher are optional).
3. The 5kW power amplifier is composed of 6 pieces 900W power amplifier modules, which are highly efficient in the same direction, with large power redundancy design margin and high reliability.
4. The power amplifier module uses the latest high-efficiency LDMOS tube and microstrip impedance transformation technology, with good consistency; Each power amplifier module is installed on a copper substrate, which is convenient for maintenance and replacement.
5. The power amplifier radiator adopts the patented thermal simulation design tooth profile, which has small wind resistance, large heat dissipation area and high heat conduction efficiency.
6. Three high-quality long-life large-flow axial flow fans are connected in parallel, and the redundant air volume is large. A single damage will ensure the normal operation of the machine.
7. The power amplifier adopts highly reliable switching power supply, flexible n + 1 hot plug configuration scheme and parallel current sharing centralized power supply. Redundancy configuration can also be carried out according to customer requirements.
8. The switching power supply is provided with protections such as over-voltage, over-current, under-voltage, over-temperature, short-circuit, phase loss, and lightning protection.
9. The transmitter is provided with VSWR, over power, over temperature, over voltage, over current and lightning protection.
10. The whole machine is installed in a 19-inch standard cabinet, and the height can be customized according to customer requirements.
11. The bottom of the cabinet is equipped with universal wheels (lockable) to facilitate the movement of the equipment.
12. Various technical parameters can be read through the touch LCD display of the central control unit (CCU) panel, which is intuitive and convenient.
13. Complete technical data detection and monitoring system and computer control software with complete functions.
14. Power control uses closed-loop automatic gain control to ensure stable output power without drift.
15. With TCP / IP and RS232 remote control interface, it is easy to realize local management and remote monitoring of the computer.
Technical Specifications:
1. RF frequency range 87MHz~108MHz
(other frequencies can be customized), stepping 10kHz
2. Output power 0~5000W continuously adjustable
3. Allowable deviation of output power < ± 10%
4. Output power stability < ± 3%
5. Output impedance 50Ω
6. RF Output Interface: 1-5/8' Flange
7. RF efficiency ≥70%
8. Residual wave in band <- 75db
9. Higher harmonic < - 70dB
10. Parasitic amplitude modulation <- 50dB
11. Carrier Frequency precision: ±200Hz
12. Analog audio input -12dBm ~ +8dBm
13. Input audio Level Gain -15dB~+15dB Step 0.1dB
14. Analog audio input impedance 600Ω balance
15. AES input impedance 110Ω balance
16. AES input level 0.2~10Vpp
17. AES sampling rate 30kHz ~ 96kHz
18. RDS input Unbalanced (optional) BNC type connector
19. Pre-emphasis: 0μS,50μS,75μS
20. Audio response: ±0.01dB (30Hz~15000Hz)
21. Left and right channel level difference <0.01dB (100% modulation)
22. Stereo separation ≥70dB (30Hz ~ 15000Hz)
23. Stereo signal-to-noise ratio ≥90dB (1KHz, 100% modulation)
24. Distortion <0.01% (30Hz ~ 15000Hz)
25. Power supply Three-phase four-wire AC 380V
or single-phase AC 220V or two-phase AC 110V
26. Cooling method Forced convection
27. Temperature range -5 ºC ~ + 45 ºC
28. Chassis dimensions 19 inches
wide (574mm) × height (1000mm) × depth (880mm)
29. Transmitter weight 150kg
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