185-6525-0908 Digital IPTV system overall solution service provider

WSJ1004A 4 Channel Analog Modulator

WSJ1004A 4 Channel Analog Modulator

Widely applied in hotel television systems


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  • Product Details

Product Features

1. Four channels of video and audio input, one channel of RF four channels of frequency isolation output.

2. Adopting high-frequency modulation with low out of band interference.

3. The accompanying sound and image adopt MCU phase-locked technology, with high frequency stability and accuracy.

4. All functional circuits of the entire machine adopt chip technology, resulting in high reliability of the entire machine.

5. Easy to operate, the volume and video adjustment can be adjusted on the front panel


Technical Parameter




radio frequency

Output frequency range

47--870

Frequency accuracy

± 5kHz

Output level

90 dBmV

out of band rejection

- 60dBc max

Output Impedance

75Ω

Output reflection

12dB min Any channel

video

Audio Image Carrier

18 ± 2dB

input level

0.6 ~ 1.5Vp-p

Video input impedance

75Ω

Video input reflection

30dB min

Signal to noise ratio (weighted)

60dB

time delay

45 nsec

In-band flatness

± 1dB

Differential Gain

± 5% (adjusted to 87.5%)

Differential Phase

± 5° (Adjustment rate is 87.5%)

audio frequency

input level

-10 ~ 10 dBm

Impedance

10KΩ min

In-band flatness

± 1dB

degree of distortion

1 %

Signal to Noise Ratio

-60dB

Image and audio spacing

According to the format

electricity

source

Input AC voltage

220V

consumption

15W max



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