| Customization: | Available |
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| Type: | Transmitter |
| Function: | Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment |
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ZHC518A-200W/C2 Analog TV Transmitter
Overview:
This TV transmitter is a high-standard, broadcast-grade integrated all-solid-state analog TV transmitter. It adopts new software radio technology to realize TV modulation function; it adopts international high-quality LDMOS high-power field effect tube to realize RF amplification, and the output power can be selected according to needs, which are 200W / 300W.
The TV transmitter is mainly composed of a television modulation unit and a radio frequency power amplification unit. Among them, the TV modulation unit adopts a new FPGA + DDS to implement software-based TV modulation function, which guarantees reliability and performance consistency while obtaining superior technical indicators; the RF power amplifier unit uses international high-quality LDMOS high-power FETs, and the Analog/Digital Compatible, stable and reliable work.
The whole transmitter uses a 19 "standard stainless steel case, which is suitable for TV stations of all levels.
Features:
It adopts new FPGA + DDS technology to realize software-based TV modulation function, with superior performance, high reliability and good consistency.
It adopts the integrated structure design, and the single-channel image sound combination type is easy to install and use.
It has the functions of no video, excessive standing wave ratio, over power, over voltage, over current, and over temperature protection to reduce equipment damage.
With intelligent network management and monitoring, with RS232 and TCP / IP communication interfaces.
It's using high-quality switching power supply, with over-voltage, over-current, under-voltage, over-temperature, short circuit, lightning protection and other protection measures, high efficiency, good voltage regulation range, strong ability to adapt to external power changes.
It adopts high-quality high-flow axial flow fan, with good heat dissipation effect, keep the transmitter in a low temperature state, and extend the life of the transmitter.
ZHC518A-200W/C2 Analog TV Transmitter Diagram
Technical Specifications:
Overall performances:
1. Operating frequency band: VHF / UHF
2. Image carrier frequency deviation: ± 300Hz
3. Output power: 200W / 300W
4. Output impedance: 50Ω
5. Inter-modulation distortion: ≤-50dB
6. Useless emission: ≤-50dB inside adjacent channels;
≤-65dB outside adjacent channels
7. RF output interface: N-50KF
8. Power supply: single phase 220VAC / 110VAC
9. Cooling method: forced air cooling
10. Working environment temperature: -10~+45 ºC
11. Dimensions: 483mm(width) x 88mm(height) x 500mm(depth)
12. Weight: 16Kg
Image performance:
1. Video input level: 1VP-P positive polarity
2. Video input impedance: 75Ω
3. Video in-band reflection loss: ≥35dB
4. Video input interface: BNC-K
5. Periodic clutter signal-to-noise ratio: ≥55dB
6. Continuous random wave SNR: ≥60dB (weighted),
≥55dB (un weighted)
7. Group delay: ± 30ns
8. 2T square wave distortion: ≤1%
9. Distortion of brightness waveform: ≤1.2%
10. Non-linear brightness distortion: ≤3%
11. Differential gain DG: ≤±3%
12. Differential phase DP: ≤±3 °
13. Color / bright gain difference: ≤1%
14. Color / bright delay difference: ± 5ns
15. Modulation degree: ≤87.5%
Sound performance:
1. Sound / image carrier power ratio: -10dB
2. Sound carrier frequency deviation: ± 200Hz
3. Audio input level: 0dBm ± 6dBm
4. Audio input impedance: 600Ω balanced or 10KΩ unbalanced
5. Audio input interface: XLR-K / BNC-K
6. Sound modulation capability: > ± 100KHz
7. FM signal-to-noise ratio: ≥70dB
8. Amplitude-frequency characteristic: ± 1dB
9. AM noise (no modulation): ≤-55dB
10. Internal carrier noise (100% modulation): ≤-50dB
11. Harmonic distortion: ≤0.3%
12. Maximum frequency deviation: ± 50KHz
13. Pre-emphasis time constant: 50us
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