High Quality 16 In1 CATV Fixed RF Modulator JM-50168
High Quality 16 in1 CATV Fixed RF Modulator JM-50168
SPECIALLY ESTABLISH BY 16 CHANNELS MINI MODULATOR
Technical Characteristics:
1.Compact size, easy installation;
2.Micro-computer control, image sound two-phase locking;
3.IF SAW filters to deal with, excellent VSB;
4.High-output, continuously adjustable sound frequency offset, high reliability;
5.A wide range of linear power supply;
6.The use of SMD technology, machine stability.
Output frequency range |
MHz |
47—871 |
RF output level |
dBµV |
110 or up |
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 |
ns |
|Δτ|≤45 |
Image/sound power ratio (V / A) |
dB |
10—20 Continuously adjustable |
Images,sound freq. spacing |
KHz |
6500±2(PAL-D/K); 5500±(PAL-B/G);4500±2(NTSC) |
Accuracy of image carrier freq |
KHz |
≤5 |
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 90-265V |
Ambient temperature |
°C |
5—50 |
Relative humidity |
% |
≤85 |
Atmospheric work pressure |
Kpa |
86—106 |
Overall dimensions |
mm |
550x290x260 |
Gross Weight |
Kg |
12.00 |
2)Active Mixer (Combiner) Technical Parameter:
Output frequency range |
MHz |
47—871 |
Differential gain |
% |
≤3 |
Video-band flatness |
dB |
±0.5 |
Nominal input level |
dBµV |
108 |
Nominal output level |
dBµV |
111 |
Noise figure |
dB |
≤8 |
Return Loss |
dB |
≥12 |
C/CSO |
dB |
64 |
Power input |
V |
AC90-265V |
Output |
Channel |
16 |
Output voltage |
V |
DC 12 , 3.5A (Max) |
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