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DSM3000B Adjacent Frequency Agile Modulator
| Offer Type: |
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| Offer Post Time: |
2008-07-16 |
| Expiration Date: |
2009-12-31 |
| Details: |
- Applicable for 47~870MHz system, Agile channel output, specially designed for large scale system
- Man machien dialogue function
- Vedio frequency AGC function
- RS485, RS232 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 applid for interference loading for fee-paid TV system
- In accordance to adjacent frequency design, no interference between adjacent channels
- Local oscillation adopting unique phrase-locked loop(PLL)circuit, phase noise extremely low, video becoming more clearly and stably
- 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:
IF 38MHz
Output return loss ¡Ý15 dB (VHF) ¡Ý 12 dB (UHF)
Output level ¡Ý 120 dB¦ÌV (typical value)
C/N ¡Ý 65 dB (fc ± 4 MHz)
¡Ý 70 dB (fc ± 8 MHz)
¡Ý 80 dB (fc ± 16 MHz)
Output suppression ¡Ý 62dB
- Video:
Degree of modulation signal ¡Ý 87.5%
Flatness in operating band ¡Ü ± 0.5dB(worst case no more than 0.75dB)
K-2T Factor ¡Ü 2%
Delay difference of color of light ¡Ü 30ns
Video S/N ¡Ý 58 dB (non coefficient added)
¡Ý 64 dB (coefficient added)
- Audio:
Maximum partial frequency of audio ± 50 KHz
Audio flatness ¡Ü ± 0.5 dB(40Hz~15KHz)
Audio distortion degree ¡Ü 1 %
Audio S/N ¡Ý 65 dB |
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