TV Transmitter

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VHF/UHF 10kW All-Solid-State TV Transmitter

 

VHF

UHF

Rated Output Power

10KW

RF Specifications

Television Standards

PAL-D or other standards

Frequency Range

VHF Ⅰ, Ⅲ

( Select one channel)

470MHz~806MHz ( Select one channel)

Video/Audio Ratio

10:1

RF Output Impedance

50Ω

Output Interface

3 1/8” Flange

Frequency Stability

±300Hz/3months

Output Power Variation

±0.25dB

Inside-band Intermodulation

≤-52dB

Stray Output In Adjacent-channel

≤-60dB

Stray Output Out Adjacent-channel

≤-40dB

Video Specifications

Input Level

1 Vp-p

Input Impedance

75Ω

Input Return Loss

≥34dB(0MHz~5.5MHz)

Modulation Mode

AM, negative polarity

Percentage of Modulation

≤87.5%

Field-time Waveform Distortion

≤2%

Line-time Waveform Distortion

≤2%

2T Sine-squared Pulse Distortion

≤2%

Luminance Non-linearity Distortion

≤10%

Blacking Level Variation

≤±2.5%

Differential Gain

±5%

Differential Phase

±5°

C/L Gain Inequality

≤10%

C/L Delay Inequality

±30ns

Stochastic Sundry Wave S/N Ratio

Root-Mean-Square Value, unweighted: ≥50dB

Root-Mean-Square Value, weighted: ≥58dB

Periodic Disturbance S/N Ratio

Peak-to-peak value: ≥50dB

Audio Specifications

Input Level

0dBm±6dB

Input Impedance

600Ω (Bal.) or  ≥2KΩ (Unb.)

Modulation Mode

FM

Pre-emphasis

50μs

Frequency Deviation

±50KHz

Harmonic Distortion

≤1%(30Hz~15KHz)(100% Modulated)

Amplitude-Frequency Characteristic

±1dB(30Hz~15KHz, 50us)(50% Modulated)

FM S/N Ratio

≥60dB (1KHz,100% Modulated)

AM Noise

≤-50dB (Unmodulated)

Inner-carrier Noise

≤-45dB (100% Modulated)

Sync parasitic Am Modulation S/N

≥40dB

Video to Audio Intermodulation

≤10%

Environmental Factors

Working Temperature

-10~+45℃

Relative Humidity

<95%(No condensation at 25℃)

Atmosphere Pressure

86~106Kpa

Cooling

Forced air cooling

Power Supply

3 phase;AC;380V\±15%; 50Hz±10%

Machine Room

Few dust, No oscillation and impact

Dimensions

Power amplifier cabinet:1800(H)×1000(W)×1000(D)mm3

Exciter cabinet:1800(H)×600(W)×1000(D)mm3

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