| Customization: | Available |
|---|---|
| Type: | Transmitter |
| Function: | Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment |
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ZHC618F-500W/1KW FM Transmitter (Rack)
ZHC618F series digital FM broadcast transmitter is based on a new digital FM exciter, supplemented by audio transmission equipment, power amplifier and power synthesis filter. Through all-digital audio processing, the software directly implements digital filtering of audio, pre-emphasis, instantaneous, pilot generation, stereo encoding and other processes. MPX signals are then modulated and output by direct digital synthesis technology to transmit high-quality FM broadcast signals.
FEATURES
MOSFET all-solid-state technology
Unique distribution and synthesis technology
Modular design concept
Power amplifier module and switching power supply adopt building block structure
Parallel redundant design to reduce the interruption rate
Backup redundant design of the exciter: the main and backup exciters are backed up and switched automatically (backup exciter and switch are optional)
Microprocessor control technology with self-diagnostic function
Perfect technical data detection and monitoring system and computer control software with perfect functions
With TCP / IP, SMS cat, RS232 communication interface, computer management and monitoring can be used
The switching power supply is provided with over-voltage, over-current, under-voltage, over-temperature, short-circuit, lightning protection, etc.
The whole transmitter is equipped with VSWR, over-excitation, phase loss and lightning protection etc.
ZHC618F-500W/1KW FM Transmitter DIAGRAM
Technical Specifications: (Depends on exciter model)
1. Frequency Range: 87.0MHz~108.0MHz
Setting step 10KHz
2. Output Power 0~500W/1000W
3. Output Impedance 50Ω
4. RF Output Interface 7/16"(female)/ 7/8" Flange
5. Residual wave radiation ≤-70dB
6. Parasitic amplitude modulation ≤-50dB
7. Pilot frequency deviation < 0.5Hz
8. Pilot modulation 7.5kHz (adjustable from 0 to 12 kHz)
9. Audio input impedance 600Ω balanced
10. Audio Input Level -10dBm~+10dBm, step 0.1dBm
11. AES / EBU input impedance 110Ω, balanced
12. AES / EBU input level 0.2 ~ 10Vpp
13. AES / EBU sample rate 30kHz ~ 96kHz
14. Audio input interface XLR
15. Modulation frequency deviation 75kHz (100% modulation)
maximum 112.5kHz (150% modulation)
16. Pre-emphasis 0μS, 50μS, 75μS (optional)
17. Audio Response ±0.1dB (30Hz~15000Hz)
18. LR channel level difference <0.1dB (100% modulation)
19. Stereo Separation ≥50dB (30Hz ~ 15000Hz)
20. Stereo S/N ratio ≥70dB (1KHz, 100% modulation)
21. Distortion ≤0.1% (30Hz~15000Hz, 100% modulation)
22. Power supply voltage AC 220V ± 15% 50Hz
23. Cooling mode Forced Convection
24. Temperature Range: -5ºC~+45ºC
25. Relative humidity <95%
26. Working Altitude <4500m
27. Power Consumption: 1600VA
28. Size (wide)600mm×(height)1000mm×(depth)900mm
29. Weight 85KG
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Common Problems:
In order to be more comprehensive understanding of the knowledge about our products,we collect all the analyses of problems for every order,hope it will help you.
Q1. What these equipments used for?
A1. We are original manufacturer in FM Radio & TV Broadcasting equipments; they are professional used for FM Radio & TV Broadcasting Station (Transmitting equipment.)
Q2. What equipment & solution your company can provide?
A2. We can do complete solution for FM Radio Station System. It includes:Studio--Link--Transmitter--Cables--Antenna.
We also can provide complete Transmitting part of TV Station. It includes:Link-Transmitter-Cables-Antenna.
Q3. How large areas can One Station cover?
A3. One FM or TV Station can cover one city or one town.
The Maximum cover ranges of one station can not over 100KM Radius because the Earth is Curve.
You can use Multiple Stations & Different Frequency to cover larger area.
Q4. How do I choose suitable equipments for my station?
A4. The most import factors are Power and Frequency.
We need to know the Power and Frequency you need exactly.
How long the distances do you want to cover in Radius?
How height your Antenna can be installed?
Q5. How to calculate Broadcasting equipment Cover Range?
A5. The Cover Range depends on 4 factors:
1. Power from Transmitter; 2. Height of Antenna; 3. Gain from Antenna; 4. Around Environment.
Then we can know the cover range of your station.
Q6. Is the Frequency Adjustable?
A6. FM Radio Band Frequency is 87~108MHz, TV Band Frequency includes UHF/VHF band.
For FM Radio Transmitter; Power Below 2KW is all adjustable. Above 2KW would be narrow.
For TV Transmitter; all Frequency Band is very Narrow, only can contain around 3 Channels; so it's not adjustable.
Q7. How to do installation of these equipments?
A7. For small power station, the equipments are very easy for installation.
For large power station, we can send our engineer to your country to help you do the installation, but you should pay the cost.
We also can do training for your engineer here in our company.
Q8. How to operate these broadcasting equipments?
A8. We provide All-English user manual; All-English operation software in our equipment.
We also can do training for your engineer here in our company.
Q9. What about after sales?
A9. The warranty time is one year after goods leaving factory.
We can provide technical support from internet or in our company.
We can send spare parts to you directly when the equipment damaged.
ZHC(China) Digital Equipment Co.,Ltd
Add: Building 5th, No.23, Jugong Rd. Binjiang District, Hangzhou, China
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