Product Description
WM-860PA Modulator use facial filter picture, voice technology, IF/38MHz signal, picture,voice PLL technology, reliable filter, excellent restrain ability and high quality、high stability RF-output signal, suitable for CATV transmitting system.
Product Features
Intermediate frequency, twice conversion frequency and with saw filter, low side-band interfere.
MCU technique is applied to audio intermediate frequency,video high frequency process and RF local oscillator, with high frequency stability and accuracy.
Integrated circuit is applied to outputs, and each functional circuit of the overall unit adopts SMT technology, with high stability.
LED displays frequency, using up and down button to select channel and frequency.
Convenient control, frequency level adjustment is on front panel.
High efficiency SMPS.
We can offer PAL or NTSC system standard upon customer’s requests.
Technical Parameters
reflection | output frequency range | 45-900MHz |
frequency accuracy | ± 5kHz | |
output level | 110dBmV | |
side-band suppression | ³60dB | |
output impedance | 75 Ω | |
video to audio carrier ratio | -10dB ~ -20dB | |
video frequency | input level | 0.6 ~ 1.5Vp-p |
input impedance | 75Ω | |
input reflection | 30dB min | |
K coefficient | 4 % max （ 2T pulse ） | |
video s/n | 50dB | |
C/L delay | 40nsec | |
frequency response | ± 1dB | |
differential gain | ± 4 % （ modulator 87.5 % ） | |
differential phase | ± 4° （ modulator87.5 % ） | |
audio frequency | input level | -10 ~ 10 dBm |
input impedance | 10KΩ min | |
frequency response | ± 1dB | |
distortion | 1 % | |
signal to noise ratio | -60dB | |
audio image interval | according to the TV System standard | |
power supply | voltage | 110 ~ 245V AC |
