ProductsBroadcast front-end equipment

  • Product Name:

    Broadcast grade 24-channel adjacent channel modulator Analog TV system modulator Hotel TV demodulator

  • Categories:Broadcast front-end equipment / Products
  • Date:2020-08-12
  • Features 1 The modulation circuit adopts today’s mainstream modulation chip with single-chip control, which is stable and reliable. 2 The modulation circuit of each channel is completely independent, and the channel confi ...
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1 pcs sample
1880.34 USD
/pcs
USD
Airmail 25days

pcs
USD
/pcs
USD
Airmail 25days

Product Description

Features

1 The modulation circuit adopts today’s mainstream modulation chip with single-chip control, which is stable and reliable.

2 The modulation circuit of each channel is completely independent, and the channel configuration is very flexible and convenient.

3 The power supply is redundant and can work continuously and stably all year round.

4 The relevant debugging of the cable TV transmission equipment has been completed before leaving the factory.

Input AV signal to work, and can be installed and constructed by non-professionals.

5 Integrated installation of multiplexers, compact structure, no need for special equipment room.

technical parameter

Channel 47~860MHz

Output level ≥105dBμV

Adjustable range of output level 0~-20dB (adjustable)

Image/sound power ratio -10dB~-30dB continuously adjustable

Output impedance 75Ω

Parasitic output suppression ratio ≥60dB

Image carrier frequency accuracy ≤±5KHz (in VHF band); ≤±10KHz (in UHF band)

RF output reflection loss ≥12dB (in VHF band); ≥10dB (in UHF band)

Video input level 1.0Vp-p (corresponding to 87.5% modulation)

Video input impedance 75Ω

Differential gain ≤5% (when the modulation degree is 87.5%)

Differential phase ≤5° (when the modulation degree is 87.5%)

Chroma/luminance delay difference ≤45 ns

Video band flatness ±1dB

Video modulation range 0~90% continuously adjustable

Video signal-to-noise ratio ≥55dB

Audio input level 1Vp-p (±50KHz frequency deviation)

Audio input impedance 600Ω

Audio signal-to-noise ratio ≥57dB

Audio pre-emphasis 50μs

Power supply AC 220V±10% 50Hz±2Hz, 50W

Working environment temperature 0~40℃

Volume 19 inches 4U

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