Junpu Headend Catv Analog 16 Channel Rf Agile Modulator Digital Cable
RF | Cr/L delay: ≤40 ns |
Output frequency: 45…870MHz | Weighted S/N ratio: ≥60 dB |
Nominal output level: ≥55dBmV |
|
Output impedance: 75Ω | Audio |
A/V RATIO: -10 … -20 dB | Input level: 0.775V±10dB |
Carrier frequency tolerance: ≤5kHz | Input impedance (unbalance): 10kΩ |
Carrier frequency distance tolerance: ≤100Hz | Adjustable peak deviation: ±50kHz |
Spurious in band: ≤-60dB | Pre-emphasis: 50μs |
Output level adjustment: 0 … -20dB | Flatness (50Hz …15kHz): ≤±1.5dB |
C/N ratio in band: ≥60dB | Distortion(fm=1kHz;f=50kHz): ≤1% |
| S/N ratio: ≥65dB |
Video |
|
Input level: 0.7…1.4 VPP | General |
Input impedance: 75Ω | Supply voltage: AC90…260V |
Input return loss: ≥20 dB | Consumption: 20W |
Modulation depth: 87.5% | Operating temperature: -10 … +55℃ |
Differential gain: ≤5% | Video,audio connector type: “RCA” |
Differential phase: ≤5 o | IF and RF connector type: “F” |
Flatness in band: ≤±1.5 dB | Outside dimensions(h×w×d): 483×130×44mm |
| Packed weight: 2.5kg |
Base-band video and audio inputs
All systems and channels between 45 and 870MHz Agile Controlled by Advance Micro-processor
Double heterodyne conversion, IF SAW filter. High vestigial sideband selectivity
Output TV channel frequency through diplex VCO-PLL synthesis
Full +55dBmV output, LED display
Adjustable A/V ratio,RF output level,video and audio modulation index ,Controlled by
Advance Micro-processor
Adopt high quality SMPS, ensure wide power supply range
-20dB test point(OPTIONAL)