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16 channel fixed adjacent frequency modulator

16 channel fixed adjacent frequency modulator

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  • Product Details

Product Features

1. The modulation circuit adopts the mainstream modulation chip and microcontroller control, which is stable and reliable.

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

3. The power supply has a large margin of redundancy and can work continuously and stably throughout the year.

4. The relevant debugging of the cable TV transmission equipment has been completed before leaving the factory. It is free of debugging on site and can work by inputting AV signals. It can be installed and constructed by non professional personnel.

5. The integrated installation of multiple modulators has a compact structure and does not require a dedicated computer room.

Technical Parameter



Output level


Adjustable range of output level

0~-20dB (adjustable)

Image/audio power ratio

-10dB~-30dB Continuing Adjust

Output Impedance


Parasitic output suppression ratio


Image carrier frequency accuracy

≤ ± 5KHz (within VHF band); ≤ ± 10KHz (UHF in band)

RF output reflection loss

≥ 12dB (within VHF band); ≥ 10dB (UHF in band)

Video input level

1.0Vp-p (corresponding to 87.5% modulation)

Video input impedance


Differential Gain

≤ 5% (when adjusted to 87.5%)

Differential Phase

≤ 5 ° (when adjusted to 87.5%)

Chromaticity/brightness delay difference

≤45 ns

Video in band flatness


Video modulation range

0-90% continuously adjustable

Video signal-to-noise ratio


Audio Input Level

1Vp-p (± 50KHz frequency offset)

Audio input impedance


Audio signal-to-noise ratio


audio preemphasis


power supply

AC 220V±10% 50Hz±2Hz,50W

Ambient Temperature