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Single agile channel catv analog modulator
Category : Modulator
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Brief : 

Single agile channel catv analog  modulator

  • Description
  • Inquiry

1. Intermediate frequency, twice conversion frequency and with saw filter, low side-band interfere. 

2. MCU technique is applied to audio intermediate frequency, video high frequency process and RF local oscillator, with high frequency stability and accuracy. 

3. Integrated circuit is applied to outputs, and each functional circuit of the overall unit adopts SMT technology, with high stability. 

4. LED displays frequency, using up and down button to select channel and frequency. 

5. Convenient control, frequency level adjustment is on front panel. 

6. High efficiency SMPS. 

7. We can offer PAL or NTSC system standard upon customer’s requests.


 

 

 

reflection

output frequency range

45-870MHz any frequency

frequency accuracy

± 5KHz

output level

113dBmV

out of band suppression

≥60dB

side-band suppression

≥60dB

output impedance

75 Ω

video to audio carrier ratio

-10dB ~ -20dB

 

 

 

video

frequency

input lever

0.6 ~ 1.5Vp-p

input impedance

75 Ω

input reflection

30dB min

K coefficient

4 % max  2T pulse

video s/n

50dB ( no emphasis )

C/L delay

40nsec

frequency response

± 1dB 25Hz ~ 5.8MHz

differential gain

± 4%  modulation 87.5

differential phase

± 4 °

 

 

audio

frequency

input level

-10 ~ 10 dBm

input impedance

10KΩ min

frequency response

± 1dB max40Hz ~ 15KHz

distortion

0.5 %

signal to noise radio

-60dB

audio picture interval

according to the style

power supply

voltage

110V or  220V


 


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