185-6525-0908
Digital IPTV system overall solution service provider
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185-6525-0908
Digital IPTV system overall solution service provider
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
channel | 47～860MHz |
Output level | ≥105dBμV |
Adjustable range of output level | 0～-20dB (adjustable) |
Image/audio power ratio | -10dB～-30dB Continuing Adjust |
Output Impedance | 75Ω |
Parasitic output suppression ratio | ≥60dB |
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 | 75Ω |
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 | ±1dB |
Video modulation range | 0-90% continuously adjustable |
Video signal-to-noise ratio | ≥55dB |
Audio Input Level | 1Vp-p (± 50KHz frequency offset) |
Audio input impedance | 600Ω |
Audio signal-to-noise ratio | ≥57dB |
audio preemphasis | 50μs |
power supply | AC 220V±10% 50Hz±2Hz，50W |
Ambient Temperature | 0～40℃ |
weight | 8KG |
18565250908
