4 in 1 analog TV modulator

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