ZHC518A-1000W/C2 Analog TV TransmitterOverview: This
Transmitter is a high-standard, broadcast-level
all-solid-state Compact design analog TV transmitter. It
uses a new software radio technology to achieve the TV modulation
function; the use of international high-quality LDMOS high-power
field effect tube to achieve radio frequency amplification, the
output power can be 1000W.The TV transmitter is mainly composed of
a TV modulation unit and an RF power amplification unit. Among
them, the TV modulation unit uses the new FPGA + DDS to
realize the software TV modulation function, while obtaining
superior technical indicators while ensuring reliability and
performance consistency; the RF power amplification unit uses
international high-quality LDMOS high-power field effect
transistors, Analog/Digital Compatible, stable and
reliable.The whole Transmitter adopts 19 "standard stainless steel
case, suitable for all levels of TV stations.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-1000W/C2 Analog TV Transmitter DiagramTechnical
Specifications: Overall performances: 1. Operating
frequency band: VHF / UHF2. Image carrier frequency
deviation: ± 300Hz3. Output power:
1000W4.
Output impedance:
50Ω5.
Inter-modulation distortion: ≤-50dB6. Useless emission:
≤-50dB inside
adjacent channels; ≤-65dB outside adjacent channels7. RF output
interface: 7/16" female8.
Power supply:
single
phase 220VAC / 110VAC9. Cooling method:
forced
air cooling10. Working environment temperature: -10~+45ºC11.
Dimensions: 483mm(width)x177mm(height)x650mm(depth)12. Weight:
35KgImage
performance: 1. Video input level:
1VP-P
positive polarity2. Video input impedance:
75Ω3.
Video in-band reflection loss:
≥35dB4. Video input
interface:
BNC-K5.
Periodic clutter signal-to-noise ratio: ≥55dB6. Continuous random
wave SNR: ≥60dB (weighted), ≥55dB (un
weighted)7. Group delay:
±30ns8.
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: ±5ns15.
Modulation degree:
≤87.5%Sound
performance: 1. Sound / image carrier power
ratio: -10dB2. Sound carrier frequency deviation: ±
200Hz3. Audio input level:
0dBm
± 6dBm4. Audio input impedance: 600Ω balanced or 10KΩ
unbalanced5. Audio input interface:
XLR-K
/ BNC-K6. Sound modulation capability:
>±100KHz7. FM
signal-to-noise ratio:
≥70dB8.
Amplitude-frequency characteristic: ± 1dB9. AM noise (no
modulation):
≤-55dB10. Internal
carrier noise (100% modulation): ≤-50dB11. Harmonic distortion:
≤0.3%12.
Maximum frequency deviation: ± 50KHz13.
Pre-emphasis time constant:
50usCompany Show:Common Problems: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
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