Fixed Channel Adjacent Modulator
Features
1, using high frequency direct modulation.
2, using surface acoustic filter processing.
3, the whole circuit using sheet technology.
4, the whole machine has high reliability and high temperature stability.
5, output level adjustment and A, V adjustment are designed in the front panel.
6, using a 19-inch standard chassis.
7, digital tube display channel.
8, can customize different standards and channels according to customer requirements
Technical Parameters
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 max（40Hz ~ 15KHz） | |
distortion | 0.5 % | |
signal to noise radio | -60dB | |
audio picture interval | according to the style | |
power supply | voltage | 110V or 220V |
