مبدل صوت و تصویر به RF

محصولی مقرون به صرفه و کارا برای اماکنی مانند هتل ها ، مجتمع ها و مراکز بازی ، قابلیت تبدیل ورودی های صوت و تصویر به سیگنال RF را دارد . 

Outline

This is a cost-effective agile modulator designed by Dexin. It has 1 audio (L/R) and 1 video (CVBS) input. It gives 1 RF out (47~870MHz) through the RF output interface, and the output frequency is configurable. Audio and video source can be from satellite receiver, TV camera etc. With the features of low cost high performance, DSM2500D is very adaptable to hotel, community and entertainment spot.

Key Features

* Support 1* audio (L/R) and 1*video (CVBS) input
* Support 1*RF output, and 1 RF test port
* RF output frequency range: 47~870MHz in 1 kHz step, output frequency is configurable
* Video input AGC function
* TV System standard: PAL B/G, PAL D/K NTSC, SECAM, etc.
* Support update online
* 19' 1U standard structure
* Keyboard and LCD operation

Principle Chart

Specifications

Input

1* audio (L/R) input and 1*video (CVBS)

Video

A/V ration

-10~-20dB

Input level

1VPP

Video clamping capacity

≥26dB

Color / light delay difference

≤45nS

Differential gain

≤2% (Modulation 87.5%)

Differential phase

≤2° (Modulation 87.5%)

SNR

≥50dB

Image carrier drift

≤5kHz

2T-K impulse ratio

≤4%

Flatness in band

≤1dB

Audio

Pre-emphasis of audio

50μs

Input level

0.7V

SNR

≥60dB

Flatness in band

≤1dB

Distortion degree

≤0.5%

Audio modulation frequency offset

± 50kHz

V/A interval

According to TV System standard

RF Output

Interface

1 F typed output port, 75Ω

Frequency range

47~870MHz, 1kHz step

TV system standard

PAL B/G, PAL D/K, NTSC, SECAM

Output return loss

≥14dB

Output level

≥113dBμV

Output level adjustable range

0~16dB

Error of video/audio carrier interval

≤5 kHz

Carrier to noise ratio (C/N)

≥62dB

Output suppression

≥60dB (≥130dBuV testing)

Flatness in band

≤1dB

Frequency accuracy

≤5kHz

Adjacent Frequency suppression

≥45dB

System function

Keyboard and LCD operation

Multiple languages

Ethernet software upgrade

Miscellaneous

Dimension(W×L×H)

482*256*44mm

Environment

-10~45℃(work); -20~80℃ (storage)

Power requirements 

AC 90-264V, 50Hz

       

 

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