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الشخص الذي يمكن الاتصال به Ms. jenny
peihua road,chengdu,sichuan,china, Chengdu, Sichuan
Outline
DSM***1A adjacent channel modulator is an enhanced TV modulator with the function of modulating audio and video signals into RF signal to output. As DSM***0A adjacent channel modulator, the DSM***1A modulator is also an advanced fixed channel output modulator applied for ****0 MHz large scale CATV system. Simultaneously, it has good performance in C/N, A/V, output level etc. Different from DSM***0A modulator, it has simple and different internal configuration so that it can leave out the modules and other components. Thereby, it can largely save the manufactures and operators cost.
Features
Specifications
RF |
Frequency range |
*7~**0MHz fixed channel |
TV format |
PAL D/K or PAL B/G |
|
Intermediate frequency (IF) |
*8Mhz/*1.5Mhz or *8.9Mhz/*3.4 Mhz |
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Output Return loss |
≥*5dB(VHF) ≥*2Db(UHF) |
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Output level |
≥**5dBuV(typical) |
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Output level adjustable range |
0~*6dB |
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Audio to video ratio (A/V ) |
8~*2dB |
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Frequency exactness |
≤±5KHz |
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Total Frequency deviation |
≤*0KHz |
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Error of video/audio carrier interval |
≤±0.5KHz |
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Carrier to noise ratio (C/N) |
≥*3dB (fc±4 MHz) ≥*0dB (fc±8 MHz) ≥*0dB (fc±*6MHz) |
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Output suppression |
≥*5dB |
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Connector |
FL*0 |
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Video |
Modulation depth |
≥*7.5% |
Input impedance |
*5Ω |
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Input amplitude |
1.0Vpp |
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Video flatness |
≤±0.*5dB |
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Gain of differential coefficient |
≤2% |
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Phase of differential coefficient |
≤2° |
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K Factor |
≤2% |
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Time delay difference of color/ light |
≤*0ns |
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Signal to noise ratio |
≥*6dB(unweighted) ≥*2dB(weighted) |
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Audio |
Audio Preemphasis |
*0us |
Input impedance |
≥*0KΩ( unbalanced) |
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Maximum frequency derivation |
±*0KHz |
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Audio flatness |
≤±0.5dB(*0Hz~*5KHz) |
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Audio distortion degree |
≤1% |
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Signal to noise ratio |
≥*5dB |
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Miscellaneous |
Dimension |
*4mm×**2mm×**0m |
Power |
AC**0V±*0%*0Hz*2VA |