Features
NOTE After payment, please leave a message to inform us that we need PAL or NTSC system, frequency range, if there is no message, we will ship according to the default style.
The modulator is an analog modulator with frequency separation processing, which can be used in combination with 3 machines to form an analog TV system of 48 programs.
This machine is suitable for small analog TV systems, within 200 TV terminals, if you use an analog TV system with more than 48 channels, it is recommended to use another 16-channel adjacent frequency modulator
1. 16 channels of video and audio channels input, one channel of 16 channels of radio frequency output.
2. It adopts high-IF modulation, one-frequency conversion method and surface acoustic filter processing, and the out-of-band interference is small.
3. The sound, high-IF and RF local oscillators adopt MCU phase-lock technology, which has high frequency stability and accuracy.
4. All functional circuits of the machine adopt chip technology, and the machine has high reliability.
5, easy to operate, factory fixed frequency, can tune the program on its own.
6. Power supply adopts high reliability and high dynamic range switching power supply.
7. Different standards can be customized according to customer requirements.
Technical Parameters
Output frequency range
MHz
49-860
RF output level
dB¥ìV
95
Parasitic output suppression ratio
dB
¡Ã60 (when the RF output is maximum)
RF output reflection loss
dB
¡Ã13
Video modulation
%
87.5 (video input level 1Vp-p)
Video band flatness
dB
± 1.2
Differential gain
%
¡Â3
Differential phase
°
¡Â3
Video signal to noise ratio
dB
¡Ã60
Color / light delay difference ¥Ä¥ó
ns
¥Ä¥ó ¡Â45
Image and audio frequency spacing
KHz
6500 ± 2 (PAL-D / K)
Image carrier frequency accuracy ¥Äf
KHz
¡Â5 (VHF); ¡Â10 (UHF)
Audio loading
dB
¡Â1.5
Audio total harmonic distortion
%
¡Â1
Audio signal-to-noise ratio
dB
¡Ã60
Power supply
V
220 ± 10% AC
Ambient temperature
¡É
5-50
Relative humidity
%
¡Â85
Dimensions
mm
483 * 185 * 45
weight
KG
1.5