Specifications
1. 4 in 1 adjacent analog modulator2.PAL D/K,PAL B/G,NTSC (Optional )
Features
- In accordance to adjacent frequency design, no interference between adjacent channel.
- Adapting double-conversion,IF modulation, Acoustic filter,Phase-locked technology.
- 4 adjacent channels in 1 housing, firm structure, providing an economical solution.
- 19’ 1U standard structure, independent power supply, elegant exterior, flexible corollary equipment, convenient to maintenance
Specification
RF | Index | Specification |
Frequency range | (47 ~ 870)MHz (Fixed Channel) | |
TV system | PAL D/K,PAL B/G,NTSC (Optional ) | |
Output return loss | VHF more than 12dB UHF more than 10dB | |
Output level | 105dBμV(independent output; more than 95 dBμV( combined output) | |
Audio carrier power to video carrier power | (14 ~ 22)dB | |
Frequency Accuracy | VHF± 5 KHz UHF ± 10 KHz | |
Total frequency deviation | VHF ± 10 KHz UHF± 20 KHz | |
video/audio interval | 5KHz | |
Carrier power ratio | more than55dB(In-channel) ≥62dB(Out-channel) | |
Internal spurious output | ≤- 60dB | |
External spurious output | ≤- 60dB |
Video | Parameters | Specification |
Degree of modulation signal | ≥80% | |
Flatness in operating band | ≤±1.5dB | |
Gain of differential coefficient | ≤5% | |
Phase of differential coefficient | ≤5° | |
K Factor | ≤4 | |
Delay difference of color or light | ≤45ns | |
Signal to noise ratio | ≥52dB |
Audio | Index | specification |
Pre-emphasis of audio | 50μs | |
Maximum partial frequency of audio | ± 50KHz | |
Audio flatness | ± 1dB(40Hz ~ 10KHz) | |
Distortion degree of audio | ≤1% | |
Signal to noise ratio | ≥60dB |