DSM2500B adjacent frequency agile modulator
Feature - Applicable for 47~870MHz system, agile channel output, specially designed for large scale system.
- Man machine dialogue function
- Video frequency AGC function
- RS485 net administration function - I2 C Bus control
- LCD Display :Radio frequency ,Video/Audio medium frequency ,Video frequency modulating scale ,Audio frequency modulating deviation ,RF output level ,A/V ratio ,etc
- Audio noise reduction (optional)
- Clamping and non-clamping switch ,easy for Video frequency scrambler
- Intermediate frequency modulating ,Video/Audio medium frequency signal input ,output port can be applied for interference loading for fee-paid TV system
- In accordance to adjacent frequency design, no interference between adjacent channel
- Having RF automatic amplitude-stabilizing circuit, making front-end system becoming more stable and reliable.
- RF output adopting modular amplification, ensuring RF output dynamic and parasite suppressing
- Adopting unique diode dual-balance modulating, good linearity, low noise, modulator's
indexes, such as S/N, C/N, DG, DP, have achieved internationally advanced level - Surface mount technology, ensuring the accordance of entire machine
- 19' 1U standard structure, independent power supply, elegant exterior design
Specification RF | Frequency range | 47~870MHz Any channel | TV system | PAL D/K | Output Return loss | ≥15dB(VHF) ≥12Db(UHF) | Output level | ≥120dBuV(typical) | Output level adjustable range | 0~16dB(0.5dB step ) | Audio carrier power to video carrier power ratio | -8~-22dB(0.5dB step ) | Total Frequency deviation | ≤5KHz | Error of video/audio carrier interval | ≤±0.5KHz | Carrier to noise ratio (C/N) | ≥62dB | Output suppression | ≥60dB | Interface | FL10 | Video | Degree of modulation signal | ≥87.5% | Flatness is operating band | ≤±0.75dB | Gain of differential coefficient | ≤2% | Phase of differential coefficient | ≤2° | K-2T Factor | ≤3% | Delay difference of color or light | ≤30ns | Signal to noise ratio | ≥56dB(unweighted) ≥62dB(weighted) | Audio | Pre-emphasis of audio | 50us | Maximum partial frequency of audio | ±50KHz | Audio flatness | ≤±0.5dB(40Hz~15KHz) | Distortion degree of audio | ≤1% | Signal to noise ratio | ≥6dB | Communication interface | Interface | RJ45 | Communication format | RS485 | Date rate | 9600bits/s | Miscellaneous | Dimension | 44mm×482mm×360m | Power | AC220V±10%50Hz20VA |
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Main Products: Encoder ModulatorOnly Export Trade ,EncoderOnly Export Trade ,ModulatorOnly Export Trade ,IRDOnly Export Trade ,Multiplexer/ScramblerOnly Export Trade
Business Type: Manufacturer,Trading Company
Chengdu Sichuan China
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