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Help CenterJM-8800 Agile Adjacent CATV Modulator / SAW Filtered TV Headend Print Your Brand Logo and OEM
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SAW Filtered TV Headend print your brand logo and OEM
I. Overview:
Agile adjacent TV modulator for all Channels, using high-reliability vestigial sideband filters, intermediate frequency modulation signal processing and its parasitic output rejection is greater than 60dB; four re-locked PLL frequency, stable performance and reliable; RF amplification using high-quality module components, non-linear distortion, to ensure high output level; microcomputer CPU controlled, programmable 101 channels, two LED displays the real channel, with additional (PAL-D / K system) channel instructions, and there is broken electric memory function; RF output level of up to 115dBμV (M), has an excellent linearity of audio and video; the back panel with composite IF input, output interface,suitable for Scrambling, descrambling system.
2. Technical Parameters:
Output frequency range |
MHz |
48-871PAL-D/K DS01DS58,Z01Z43Continuously adjustablePAL-B/G E02E63,S01S41 |
RF output level |
dBµV |
115M |
Parasitic output rejection ratio |
dB |
≥60(Maximum output frequency) |
RF output return loss |
dB |
≥13 |
Video transfer system |
% |
87.5(Video input level 1Vp-p) |
Video-band flatness |
dB |
±1.2 |
Differential gain |
% |
≤3 |
Differential Phase |
° |
≤3 |
Video signal to noise ratio |
dB |
≥60 |
Color / light time delay difference t |
ns |
|τ|≤45 |
Image / sound carrier power ratio (V / A) |
dB |
1020 Continuously adjustable |
Images, sound frequency spacing |
KHz |
6500±2PAL-D/K 5500±2PAL-B/G) |
The accuracy of the image carrier frequency f |
KHz |
≤5VHF ≤10UHF |
Audio Frequency Modulation |
KHz |
50 |
Audio total harmonic distortion |
% |
≤1 |
Audio signal to noise ratio |
dB |
≥60 |
Audio pre-emphasis |
µs |
50 |
Power Supply |
V |
AC 220±10% |
Ambient temperature |
|
550 |
Relative humidity |
% |
≤85 |
Atmospheric pressure working environment |
Kpa |
86-106 |
Overall dimensions |
mm |
483*220*45 |
Weight |
Kg |
3.3 |
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